diff --git a/Cargo.lock b/Cargo.lock
index 20ff672be..492fef141 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -159,7 +159,7 @@ checksum = "b169f7a6d4742236a0a00c541b845991d0ac43e546831af1249753ab4c3aa3a0"
 dependencies = [
  "cfg-if",
  "cipher",
- "cpufeatures",
+ "cpufeatures 0.2.17",
 ]
 
 [[package]]
@@ -213,13 +213,28 @@ version = "2.0.4"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "cc7bb162ec39d46ab1ca8c77bf72e890535becd1751bb45f64c597edb4c8c6b3"
 
+[[package]]
+name = "alloc-no-stdlib"
+version = "3.0.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "c2fb6cfd47bf496ff64095c20eaba0c201404ee38714d4142fcfa1dc334fcc7a"
+
 [[package]]
 name = "alloc-stdlib"
 version = "0.2.4"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "0e76a019e91224d279006ff972f1e984179a6e9feb050adba6ce8274aef23195"
 dependencies = [
- "alloc-no-stdlib",
+ "alloc-no-stdlib 2.0.4",
+]
+
+[[package]]
+name = "alloc-stdlib"
+version = "0.3.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "0b5c1865780388bfa186411ab5f247819487fc4864c6e9c3106611fa347586e1"
+dependencies = [
+ "alloc-no-stdlib 3.0.0",
 ]
 
 [[package]]
@@ -283,14 +298,14 @@ dependencies = [
  "clipboard-win",
  "image",
  "log",
- "objc2 0.6.4",
+ "objc2 0.6.5",
  "objc2-app-kit 0.3.2",
  "objc2-core-foundation",
  "objc2-core-graphics",
  "objc2-foundation 0.3.2",
  "parking_lot",
  "percent-encoding",
- "windows-sys 0.60.2",
+ "windows-sys 0.59.0",
  "wl-clipboard-rs",
  "x11rb",
 ]
@@ -580,21 +595,18 @@ version = "0.2.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "4c7f02d4ea65f2c1853089ffd8d2787bdbc63de2f0d29dedbcf8ccdfa0ccd4cf"
 
+[[package]]
+name = "base64"
+version = "0.23.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "ac07cdecf99051d9a5238b80f35af32cdeba5b336e55d957b318b50137e18da5"
+
 [[package]]
 name = "base64ct"
 version = "1.8.3"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "2af50177e190e07a26ab74f8b1efbfe2ef87da2116221318cb1c2e82baf7de06"
 
-[[package]]
-name = "bit-set"
-version = "0.8.0"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "08807e080ed7f9d5433fa9b275196cfc35414f66a0c79d864dc51a0d825231a3"
-dependencies = [
- "bit-vec 0.8.0",
-]
-
 [[package]]
 name = "bit-set"
 version = "0.10.0"
@@ -605,10 +617,13 @@ dependencies = [
 ]
 
 [[package]]
-name = "bit-vec"
-version = "0.8.0"
+name = "bit-set"
+version = "0.11.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "5e764a1d40d510daf35e07be9eb06e75770908c27d411ee6c92109c9840eaaf7"
+checksum = "56d87354e4229f54a44f7bf2435906a4656dba36026ab6eaca629a2c436a691c"
+dependencies = [
+ "bit-vec 0.10.1",
+]
 
 [[package]]
 name = "bit-vec"
@@ -616,6 +631,16 @@ version = "0.9.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "b71798fca2c1fe1086445a7258a4bc81e6e49dcd24c8d0dd9a1e57395b603f51"
 
+[[package]]
+name = "bit-vec"
+version = "0.10.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "5727b15fa97d4f4fee0a3b7c3d550ed0269f54329207b86388de918604e31269"
+dependencies = [
+ "borsh",
+ "serde",
+]
+
 [[package]]
 name = "bitflags"
 version = "1.3.2"
@@ -667,7 +692,7 @@ version = "0.6.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "cdeb9d870516001442e364c5220d3574d2da8dc765554b4a617230d33fa58ef5"
 dependencies = [
- "objc2 0.6.4",
+ "objc2 0.6.5",
 ]
 
 [[package]]
@@ -684,14 +709,38 @@ dependencies = [
 ]
 
 [[package]]
-name = "brotli"
-version = "8.0.4"
+name = "borsh"
+version = "1.8.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "5cc91aac060a7a1e25823bdccbfb6af1875b88f17c6daac97894eed8207166b3"
+checksum = "553c5d846a6ba5150c65e3b1b8ec073bcf1abc20f9b7220de384a4443ea4e20a"
 dependencies = [
- "alloc-no-stdlib",
- "alloc-stdlib",
- "brotli-decompressor",
+ "borsh-derive",
+ "bytes",
+ "cfg_aliases",
+]
+
+[[package]]
+name = "borsh-derive"
+version = "1.8.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "12cdfe656708a01f89b451a7d36466e6fe6c414de0aa18fc54f864f6f9ca9f56"
+dependencies = [
+ "once_cell",
+ "proc-macro-crate",
+ "proc-macro2",
+ "quote",
+ "syn 3.0.6",
+]
+
+[[package]]
+name = "brotli"
+version = "9.0.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "f8b851b75c23ca7873623d612fe49bd1989aeb03d08fb9432187eb253d3d4c6b"
+dependencies = [
+ "alloc-no-stdlib 3.0.0",
+ "alloc-stdlib 0.3.0",
+ "brotli-decompressor 6.0.1",
 ]
 
 [[package]]
@@ -700,8 +749,18 @@ version = "5.0.3"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "3a32acac15fe1967bc3986b2a6347dffc965602354ea6f450ad07e8bfd253583"
 dependencies = [
- "alloc-no-stdlib",
- "alloc-stdlib",
+ "alloc-no-stdlib 2.0.4",
+ "alloc-stdlib 0.2.4",
+]
+
+[[package]]
+name = "brotli-decompressor"
+version = "6.0.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "941cd9bd4ddab83cb46fa5a2d428f1c857b24ac78cb876cf7beb710840934bd7"
+dependencies = [
+ "alloc-no-stdlib 3.0.0",
+ "alloc-stdlib 0.3.0",
 ]
 
 [[package]]
@@ -829,7 +888,7 @@ dependencies = [
  "safetensors 0.7.0",
  "thiserror 2.0.21",
  "yoke 0.8.3",
- "zip",
+ "zip 7.2.0",
 ]
 
 [[package]]
@@ -839,7 +898,7 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "2fdfe9d06de16ce49961e49084e5b79a75a9bdf157246e7c7b6328e87a7aa25d"
 dependencies = [
  "half",
- "objc2 0.6.4",
+ "objc2 0.6.5",
  "objc2-foundation 0.3.2",
  "objc2-metal 0.3.2",
  "once_cell",
@@ -916,7 +975,18 @@ checksum = "c3613f74bd2eac03dad61bd53dbe620703d4371614fe0bc3b9f04dd36fe4e818"
 dependencies = [
  "cfg-if",
  "cipher",
- "cpufeatures",
+ "cpufeatures 0.2.17",
+]
+
+[[package]]
+name = "chacha20"
+version = "0.10.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "65c35e4b699c7e15ccbe7ee35c005e4fc0a278d22238a2857e6ce2dadeda1b06"
+dependencies = [
+ "cfg-if",
+ "cpufeatures 0.3.1",
+ "rand_core 0.10.1",
 ]
 
 [[package]]
@@ -926,7 +996,7 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "10cd79432192d1c0f4e1a0fef9527696cc039165d729fb41b3f4f4f354c2dc35"
 dependencies = [
  "aead",
- "chacha20",
+ "chacha20 0.9.1",
  "cipher",
  "poly1305",
  "zeroize",
@@ -1000,7 +1070,7 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "117725a109d387c937a1533ce01b450cbde6b88abceea8473c4d7a85853cda3c"
 dependencies = [
  "lazy_static",
- "windows-sys 0.52.0",
+ "windows-sys 0.59.0",
 ]
 
 [[package]]
@@ -1038,6 +1108,16 @@ dependencies = [
  "libc",
 ]
 
+[[package]]
+name = "core-foundation"
+version = "0.10.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "b2a6cd9ae233e7f62ba4e9353e81a88df7fc8a5987b8d445b4d90c879bd156f6"
+dependencies = [
+ "core-foundation-sys",
+ "libc",
+]
+
 [[package]]
 name = "core-foundation-sys"
 version = "0.8.7"
@@ -1051,7 +1131,7 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "c07782be35f9e1140080c6b96f0d44b739e2278479f64e02fdab4e32dfd8b081"
 dependencies = [
  "bitflags 1.3.2",
- "core-foundation",
+ "core-foundation 0.9.4",
  "core-graphics-types",
  "foreign-types",
  "libc",
@@ -1064,10 +1144,16 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "45390e6114f68f718cc7a830514a96f903cccd70d02a8f6d9f643ac4ba45afaf"
 dependencies = [
  "bitflags 1.3.2",
- "core-foundation",
+ "core-foundation 0.9.4",
  "libc",
 ]
 
+[[package]]
+name = "core_detect"
+version = "1.0.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "7f8f80099a98041a3d1622845c271458a2d73e688351bf3cb999266764b81d48"
+
 [[package]]
 name = "cpufeatures"
 version = "0.2.17"
@@ -1077,6 +1163,15 @@ dependencies = [
  "libc",
 ]
 
+[[package]]
+name = "cpufeatures"
+version = "0.3.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "5ca28b0ae3115b884660db4118d803791fd6756b6e88f39c0f3f7859060d7566"
+dependencies = [
+ "libc",
+]
+
 [[package]]
 name = "craft-docpath"
 version = "0.1.0"
@@ -1091,22 +1186,47 @@ dependencies = [
  "serde",
 ]
 
+[[package]]
+name = "craft-update"
+version = "0.1.0"
+source = "git+https://github.com/storytold/craft-libs?rev=495e5971bc024aa96e6ed318cb6e7cd3a0103184#495e5971bc024aa96e6ed318cb6e7cd3a0103184"
+dependencies = [
+ "chrono",
+ "dunce",
+ "egui",
+ "flate2",
+ "getrandom 0.3.4",
+ "log",
+ "plist",
+ "semver",
+ "serde",
+ "serde_json",
+ "sha2",
+ "tar",
+ "tempfile",
+ "ureq",
+ "verifysign",
+ "winreg",
+ "winsafe",
+ "zip 9.1.0",
+]
+
 [[package]]
 name = "craft-window"
 version = "0.1.0"
-source = "git+https://github.com/storytold/craft-libs?rev=a0916808f7d78bed8c7b90cdf937176015454a7f#a0916808f7d78bed8c7b90cdf937176015454a7f"
+source = "git+https://github.com/storytold/craft-libs?rev=1e6f127844ec61b3b8afdcc2bb76e7cfe470153f#1e6f127844ec61b3b8afdcc2bb76e7cfe470153f"
 dependencies = [
  "egui",
- "objc2 0.6.4",
+ "objc2 0.6.5",
  "objc2-app-kit 0.3.2",
  "wayland-client",
 ]
 
 [[package]]
 name = "crc32fast"
-version = "1.5.2"
+version = "1.5.3"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "01a7799fd6b852db0e61728dde9a204c423b44d689dbd432522543614b490e78"
+checksum = "0ba106e844045ddc02c20768ac4b0b7cb45f2cc2ecbd833ac9f5dacb183c2055"
 dependencies = [
  "cfg-if",
 ]
@@ -1195,7 +1315,7 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "97fb8b7c4503de7d6ae7b42ab72a5a59857b4c937ec27a3d4539dba95b5ab2be"
 dependencies = [
  "cfg-if",
- "cpufeatures",
+ "cpufeatures 0.2.17",
  "curve25519-dalek-derive",
  "digest",
  "fiat-crypto",
@@ -1226,6 +1346,12 @@ dependencies = [
  "zeroize",
 ]
 
+[[package]]
+name = "deranged"
+version = "0.5.9"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "9e9de72ce2ad1f90dc62fa25f0f430ef85eb4b0d8fa0be4f30373bc40a21d28e"
+
 [[package]]
 name = "dhat"
 version = "0.3.3"
@@ -1282,7 +1408,7 @@ dependencies = [
  "bitflags 2.13.2",
  "block2 0.6.2",
  "libc",
- "objc2 0.6.4",
+ "objc2 0.6.5",
 ]
 
 [[package]]
@@ -1315,6 +1441,12 @@ version = "0.1.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "d8b14ccef22fc6f5a8f4d7d768562a182c04ce9a3b3157b91390b52ddfdf1a76"
 
+[[package]]
+name = "dunce"
+version = "1.0.5"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "92773504d58c093f6de2459af4af33faa518c13451eb8f2b5698ed3d36e7c813"
+
 [[package]]
 name = "dyn-stack"
 version = "0.10.0"
@@ -1406,7 +1538,7 @@ dependencies = [
  "image",
  "js-sys",
  "log",
- "objc2 0.6.4",
+ "objc2 0.6.5",
  "objc2-app-kit 0.3.2",
  "objc2-foundation 0.3.2",
  "parking_lot",
@@ -1474,7 +1606,7 @@ dependencies = [
  "egui",
  "image",
  "log",
- "objc2 0.6.4",
+ "objc2 0.6.5",
  "objc2-app-kit 0.3.2",
  "objc2-foundation 0.3.2",
  "objc2-ui-kit 0.3.2",
@@ -1605,7 +1737,7 @@ dependencies = [
  "emath",
  "epaint_default_fonts",
  "font-types",
- "harfrust",
+ "harfrust 0.12.0",
  "log",
  "nohash-hasher",
  "parking_lot",
@@ -1678,7 +1810,7 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "39cab71617ae0d63f51a36d69f866391735b51691dbda63cf6f96d042b63efeb"
 dependencies = [
  "libc",
- "windows-sys 0.60.2",
+ "windows-sys 0.61.2",
 ]
 
 [[package]]
@@ -1795,6 +1927,16 @@ version = "0.2.9"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "28dea519a9695b9977216879a3ebfddf92f1c08c05d984f8996aecd6ecdc811d"
 
+[[package]]
+name = "filetime"
+version = "0.2.29"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "5c287a33c7f0a620c38e641e7f60827713987b3c0f26e8ddc9462cc69cf75759"
+dependencies = [
+ "cfg-if",
+ "libc",
+]
+
 [[package]]
 name = "find-msvc-tools"
 version = "0.1.14"
@@ -2353,8 +2495,11 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "300e883d756b2e4ec94e02791f39b04b522276138852cfc41d9fb7e904106099"
 dependencies = [
  "cfg-if",
+ "js-sys",
  "libc",
  "r-efi 6.0.0",
+ "rand_core 0.10.1",
+ "wasm-bindgen",
 ]
 
 [[package]]
@@ -2436,7 +2581,7 @@ dependencies = [
  "glutin_glx_sys",
  "glutin_wgl_sys",
  "libloading",
- "objc2 0.6.4",
+ "objc2 0.6.5",
  "objc2-app-kit 0.3.2",
  "objc2-core-foundation",
  "objc2-foundation 0.3.2",
@@ -2545,7 +2690,20 @@ checksum = "c03d949a14aa089bbb282f7dd76a498a7f684428e4257202efc119ec010376f9"
 dependencies = [
  "bitflags 2.13.2",
  "bytemuck",
- "read-fonts",
+ "read-fonts 0.41.0",
+ "smallvec",
+]
+
+[[package]]
+name = "harfrust"
+version = "0.13.3"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "948d0741125ba89cd3e1c23e5642415b6ade7e1d29d67ba25fb925b533e989d6"
+dependencies = [
+ "bitflags 2.13.2",
+ "bytemuck",
+ "once_cell",
+ "read-fonts 0.43.3",
  "smallvec",
 ]
 
@@ -2625,6 +2783,22 @@ dependencies = [
  "digest",
 ]
 
+[[package]]
+name = "http"
+version = "1.5.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "918d3568bebf352712bc2ef3d46a8bcf1a75b373be6539de198e9105cbbf9ce0"
+dependencies = [
+ "bytes",
+ "itoa",
+]
+
+[[package]]
+name = "httparse"
+version = "1.10.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "6dbf3de79e51f3d586ab4cb9d5c3e2c14aa28ed23d180cf89b4df0454a69cc87"
+
 [[package]]
 name = "image"
 version = "0.25.10"
@@ -2911,7 +3085,7 @@ version = "0.2.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "e35d032bcec660647828527ff42c6f5776d2fd44b8357f9f6d9ac6dc07218e46"
 dependencies = [
- "brotli-decompressor",
+ "brotli-decompressor 5.0.3",
  "jxl-bitstream",
  "jxl-frame",
  "jxl-grid",
@@ -2943,7 +3117,7 @@ version = "0.12.6"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "d36c662923f47586880211f3bc7c0d83fb3a9b410d278c7bde93450748abeef3"
 dependencies = [
- "brotli-decompressor",
+ "brotli-decompressor 5.0.3",
  "jxl-bitstream",
  "jxl-color",
  "jxl-frame",
@@ -3069,9 +3243,9 @@ dependencies = [
 
 [[package]]
 name = "libc"
-version = "0.2.189"
+version = "0.2.191"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "3eaf3ede3fee6db1a4c2ee091bf8a8b4dccdc6d17f656fb07896ee72867612f2"
+checksum = "65cd87c9a6d60536580b316ad985726104730a5151c99845f2490428ef91240a"
 
 [[package]]
 name = "libfuzzer-sys"
@@ -3116,6 +3290,7 @@ name = "lightcraft"
 version = "0.14.0"
 dependencies = [
  "chrono",
+ "craft-update",
  "eframe",
  "egui",
  "lightcraft-codecs",
@@ -3126,7 +3301,7 @@ dependencies = [
  "lightcraft-ui-egui",
  "log",
  "muda",
- "objc2 0.6.4",
+ "objc2 0.6.5",
  "objc2-app-kit 0.3.2",
  "objc2-foundation 0.3.2",
  "pollster 1.0.1",
@@ -3218,7 +3393,7 @@ dependencies = [
  "faer-core",
  "lightcraft-denoise-core",
  "lightcraft-raster",
- "miniz_oxide 0.8.9",
+ "miniz_oxide 0.9.1",
  "proptest",
  "rayon",
  "serde",
@@ -3232,8 +3407,9 @@ dependencies = [
 name = "lightcraft-denoise-core"
 version = "0.14.0"
 dependencies = [
+ "dhat",
  "lightcraft-raster",
- "miniz_oxide 0.8.9",
+ "miniz_oxide 0.9.1",
  "proptest",
  "rayon",
  "serde",
@@ -3249,7 +3425,7 @@ version = "0.14.0"
 dependencies = [
  "lightcraft-color",
  "lightcraft-geom",
- "miniz_oxide 0.8.9",
+ "miniz_oxide 0.9.1",
  "proptest",
  "serde",
  "serde_json",
@@ -3262,7 +3438,7 @@ dependencies = [
  "ab_glyph",
  "chrono",
  "craft-docpath",
- "harfrust",
+ "harfrust 0.13.3",
  "jxl-oxide",
  "libc",
  "lightcraft-catalog",
@@ -3290,7 +3466,7 @@ dependencies = [
  "lightcraft-testkit",
  "lightcraft-tiff",
  "log",
- "miniz_oxide 0.8.9",
+ "miniz_oxide 0.9.1",
  "rayon",
  "serde",
  "serde_json",
@@ -3329,7 +3505,7 @@ dependencies = [
 name = "lightcraft-geocode"
 version = "0.14.0"
 dependencies = [
- "miniz_oxide 0.8.9",
+ "miniz_oxide 0.9.1",
  "serde",
 ]
 
@@ -3382,7 +3558,7 @@ version = "0.14.0"
 dependencies = [
  "lightcraft-develop",
  "lightcraft-geom",
- "quick-xml",
+ "quick-xml 0.41.0",
 ]
 
 [[package]]
@@ -3420,7 +3596,7 @@ dependencies = [
  "lightcraft-geom",
  "lightcraft-tiff",
  "proptest",
- "quick-xml",
+ "quick-xml 0.41.0",
  "serde",
  "serde_json",
 ]
@@ -3481,7 +3657,7 @@ dependencies = [
  "lightcraft-raster",
  "lightcraft-testkit",
  "lightcraft-tiff",
- "miniz_oxide 0.8.9",
+ "miniz_oxide 0.9.1",
  "proptest",
  "rayon",
  "serde",
@@ -3548,6 +3724,7 @@ name = "lightcraft-ui-egui"
 version = "0.14.0"
 dependencies = [
  "craft-ui",
+ "craft-update",
  "craft-window",
  "egui",
  "egui_kittest",
@@ -3765,21 +3942,20 @@ dependencies = [
 
 [[package]]
 name = "muda"
-version = "0.21.0"
+version = "0.21.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "c6744ab645ebe79f9c428455c7cb9dfa4275fa3b50a25408e08f927da8dc618c"
+checksum = "4340e89c178916e62879c5c36b7f699019369be413e496178a6983ce91b8bc03"
 dependencies = [
  "crossbeam-channel",
  "dpi",
  "keyboard-types",
- "objc2 0.6.4",
+ "objc2 0.6.5",
  "objc2-app-kit 0.3.2",
  "objc2-core-foundation",
  "objc2-foundation 0.3.2",
- "once_cell",
  "png",
  "thiserror 2.0.21",
- "windows-sys 0.60.2",
+ "windows-sys 0.61.2",
 ]
 
 [[package]]
@@ -3871,6 +4047,18 @@ version = "1.0.6"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "650eef8c711430f1a879fdd01d4745a7deea475becfb90269c06775983bbf086"
 
+[[package]]
+name = "nix"
+version = "0.31.3"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "cf20d2fde8ff38632c426f1165ed7436270b44f199fc55284c38276f9db47c3d"
+dependencies = [
+ "bitflags 2.13.2",
+ "cfg-if",
+ "cfg_aliases",
+ "libc",
+]
+
 [[package]]
 name = "no_std_io2"
 version = "0.9.4"
@@ -3951,6 +4139,12 @@ dependencies = [
  "num-traits",
 ]
 
+[[package]]
+name = "num-conv"
+version = "0.2.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "521739c6d2bac4aa25192232afe6841231376b2b26d4d9fae5ecf8ca5772e441"
+
 [[package]]
 name = "num-derive"
 version = "0.4.2"
@@ -4061,9 +4255,9 @@ dependencies = [
 
 [[package]]
 name = "objc2"
-version = "0.6.4"
+version = "0.6.5"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "3a12a8ed07aefc768292f076dc3ac8c48f3781c8f2d5851dd3d98950e8c5a89f"
+checksum = "08849bbd4767dfae9457696856ae1c84fe4e0281bbe4a7abff2d0e06fb7981f8"
 dependencies = [
  "objc2-encode",
 ]
@@ -4092,7 +4286,7 @@ checksum = "d49e936b501e5c5bf01fda3a9452ff86dc3ea98ad5f283e1455153142d97518c"
 dependencies = [
  "bitflags 2.13.2",
  "block2 0.6.2",
- "objc2 0.6.4",
+ "objc2 0.6.5",
  "objc2-core-foundation",
  "objc2-core-graphics",
  "objc2-foundation 0.3.2",
@@ -4142,7 +4336,7 @@ checksum = "2a180dd8642fa45cdb7dd721cd4c11b1cadd4929ce112ebd8b9f5803cc79d536"
 dependencies = [
  "bitflags 2.13.2",
  "dispatch2",
- "objc2 0.6.4",
+ "objc2 0.6.5",
 ]
 
 [[package]]
@@ -4153,7 +4347,7 @@ checksum = "e022c9d066895efa1345f8e33e584b9f958da2fd4cd116792e15e07e4720a807"
 dependencies = [
  "bitflags 2.13.2",
  "dispatch2",
- "objc2 0.6.4",
+ "objc2 0.6.5",
  "objc2-core-foundation",
  "objc2-io-surface",
 ]
@@ -4210,7 +4404,7 @@ dependencies = [
  "bitflags 2.13.2",
  "block2 0.6.2",
  "libc",
- "objc2 0.6.4",
+ "objc2 0.6.5",
  "objc2-core-foundation",
 ]
 
@@ -4221,7 +4415,7 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "180788110936d59bab6bd83b6060ffdfffb3b922ba1396b312ae795e1de9d81d"
 dependencies = [
  "bitflags 2.13.2",
- "objc2 0.6.4",
+ "objc2 0.6.5",
  "objc2-core-foundation",
 ]
 
@@ -4258,7 +4452,7 @@ dependencies = [
  "bitflags 2.13.2",
  "block2 0.6.2",
  "dispatch2",
- "objc2 0.6.4",
+ "objc2 0.6.5",
  "objc2-core-foundation",
  "objc2-foundation 0.3.2",
 ]
@@ -4283,7 +4477,7 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "96c1358452b371bf9f104e21ec536d37a650eb10f7ee379fff67d2e08d537f1f"
 dependencies = [
  "bitflags 2.13.2",
- "objc2 0.6.4",
+ "objc2 0.6.5",
  "objc2-core-foundation",
  "objc2-core-graphics",
  "objc2-foundation 0.3.2",
@@ -4328,7 +4522,7 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "d87d638e33c06f577498cbcc50491496a3ed4246998a7fbba7ccb98b1e7eab22"
 dependencies = [
  "bitflags 2.13.2",
- "objc2 0.6.4",
+ "objc2 0.6.5",
  "objc2-core-foundation",
  "objc2-foundation 0.3.2",
 ]
@@ -4388,6 +4582,12 @@ dependencies = [
  "libc",
 ]
 
+[[package]]
+name = "openssl-probe"
+version = "0.2.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "7c87def4c32ab89d880effc9e097653c8da5d6ef28e6b539d313baaacfbafcbe"
+
 [[package]]
 name = "orbclient"
 version = "0.3.55"
@@ -4664,6 +4864,19 @@ version = "0.2.3"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "b4596b6d070b27117e987119b4dac604f3c58cfb0b191112e24771b2faeac1a6"
 
+[[package]]
+name = "plist"
+version = "1.10.3"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "327a4cb2ad49dc48adfdc9da89e22c64d488b508c67a044d71ba729e4521a285"
+dependencies = [
+ "base64",
+ "indexmap",
+ "quick-xml 0.42.0",
+ "serde",
+ "time",
+]
+
 [[package]]
 name = "png"
 version = "0.18.1"
@@ -4709,7 +4922,7 @@ version = "0.8.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "8159bd90725d2df49889a078b54f4f79e87f1f8a8444194cdca81d38f5393abf"
 dependencies = [
- "cpufeatures",
+ "cpufeatures 0.2.17",
  "opaque-debug",
  "universal-hash",
 ]
@@ -4730,7 +4943,7 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "9d1fe60d06143b2430aa532c94cfe9e29783047f06c0d7fd359a9a51b729fa25"
 dependencies = [
  "cfg-if",
- "cpufeatures",
+ "cpufeatures 0.2.17",
  "opaque-debug",
  "universal-hash",
 ]
@@ -4750,6 +4963,12 @@ dependencies = [
  "portable-atomic",
 ]
 
+[[package]]
+name = "powerfmt"
+version = "0.2.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "4a6394b9e965e73d0a289ee54f589087e2c676aedf60885baf52c76b771e4958"
+
 [[package]]
 name = "ppv-lite86"
 version = "0.2.21"
@@ -4813,16 +5032,17 @@ dependencies = [
 
 [[package]]
 name = "proptest"
-version = "1.11.0"
+version = "1.12.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "4b45fcc2344c680f5025fe57779faef368840d0bd1f42f216291f0dc4ace4744"
+checksum = "b8530004ccb15eae51c7e40009fbe317f341f804db54dc033eec1c50be28cfa0"
 dependencies = [
- "bit-set 0.8.0",
- "bit-vec 0.8.0",
+ "bit-set 0.11.1",
+ "bit-vec 0.10.1",
  "bitflags 2.13.2",
+ "chacha20 0.10.2",
+ "core_detect",
  "num-traits",
- "rand 0.9.5",
- "rand_chacha 0.9.0",
+ "rand 0.10.3",
  "rand_xorshift",
  "regex-syntax",
  "rusty-fork",
@@ -4906,6 +5126,15 @@ dependencies = [
  "memchr",
 ]
 
+[[package]]
+name = "quick-xml"
+version = "0.42.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "41b1177fdf999d2321d3fb46ff47159d9c1fb9ad66a4879f8c50a0b504615e9b"
+dependencies = [
+ "memchr",
+]
+
 [[package]]
 name = "quote"
 version = "1.0.47"
@@ -4947,6 +5176,16 @@ dependencies = [
  "rand_core 0.9.5",
 ]
 
+[[package]]
+name = "rand"
+version = "0.10.3"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "65c9fb96cbc91e3478eaae79a69fcd3f1ae4ad052e471fe6732fff548984b4af"
+dependencies = [
+ "getrandom 0.4.3",
+ "rand_core 0.10.1",
+]
+
 [[package]]
 name = "rand_chacha"
 version = "0.3.1"
@@ -4985,6 +5224,12 @@ dependencies = [
  "getrandom 0.3.4",
 ]
 
+[[package]]
+name = "rand_core"
+version = "0.10.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "63b8176103e19a2643978565ca18b50549f6101881c443590420e4dc998a3c69"
+
 [[package]]
 name = "rand_distr"
 version = "0.5.1"
@@ -4997,11 +5242,11 @@ dependencies = [
 
 [[package]]
 name = "rand_xorshift"
-version = "0.4.0"
+version = "0.5.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "513962919efc330f829edb2535844d1b912b0fbe2ca165d613e4e8788bb05a5a"
+checksum = "60aa6af80be32871323012e02e6e65f8a7cc7890931ae421d217ad8fe0df2ccf"
 dependencies = [
- "rand_core 0.9.5",
+ "rand_core 0.10.1",
 ]
 
 [[package]]
@@ -5090,7 +5335,7 @@ version = "1.1.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "40d213455a5f1dc59214213c7330e074ddf8114c9a42411eb890c767357ce135"
 dependencies = [
- "objc2 0.6.4",
+ "objc2 0.6.5",
  "objc2-core-foundation",
  "objc2-foundation 0.3.2",
  "objc2-quartz-core 0.3.2",
@@ -5133,6 +5378,17 @@ dependencies = [
  "once_cell",
 ]
 
+[[package]]
+name = "read-fonts"
+version = "0.43.3"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "005c8acf251756c478b0bf402885bfd88a1476020c4c7e6060edc1aa68da38ea"
+dependencies = [
+ "bytemuck",
+ "font-types",
+ "once_cell",
+]
+
 [[package]]
 name = "reborrow"
 version = "0.5.5"
@@ -5199,7 +5455,7 @@ dependencies = [
  "js-sys",
  "libc",
  "log",
- "objc2 0.6.4",
+ "objc2 0.6.5",
  "objc2-app-kit 0.3.2",
  "objc2-core-foundation",
  "objc2-foundation 0.3.2",
@@ -5293,7 +5549,7 @@ dependencies = [
  "errno",
  "libc",
  "linux-raw-sys 0.4.15",
- "windows-sys 0.52.0",
+ "windows-sys 0.59.0",
 ]
 
 [[package]]
@@ -5306,22 +5562,36 @@ dependencies = [
  "errno",
  "libc",
  "linux-raw-sys 0.12.1",
- "windows-sys 0.60.2",
+ "windows-sys 0.61.2",
 ]
 
 [[package]]
 name = "rustls"
-version = "0.23.45"
+version = "0.23.46"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "0d41d731c7d2f962d1ccc364cec258de3c0e93b38c2fb3ba97ac74513048d634"
+checksum = "48e13bd8c0e9365c43cfa5c9e8f9ad49d3c8444926c9aac819e0e4dc503c8fdf"
 dependencies = [
+ "log",
  "once_cell",
+ "ring",
  "rustls-pki-types",
  "rustls-webpki 0.103.15",
  "subtle",
  "zeroize",
 ]
 
+[[package]]
+name = "rustls-native-certs"
+version = "0.8.5"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "4a073f5dc7469f984c52ad2752b63b0807745133b6de880b7b64c1ac4c48aec4"
+dependencies = [
+ "openssl-probe",
+ "rustls-pki-types",
+ "schannel",
+ "security-framework",
+]
+
 [[package]]
 name = "rustls-pki-types"
 version = "1.15.1"
@@ -5331,6 +5601,33 @@ dependencies = [
  "zeroize",
 ]
 
+[[package]]
+name = "rustls-platform-verifier"
+version = "0.7.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "1167586491e2b18b8bfbb293e8180ec17c201c4f076d7cb3070ca964e7598f98"
+dependencies = [
+ "core-foundation 0.10.1",
+ "core-foundation-sys",
+ "jni",
+ "log",
+ "once_cell",
+ "rustls",
+ "rustls-native-certs",
+ "rustls-platform-verifier-android",
+ "rustls-webpki 0.103.15",
+ "security-framework",
+ "security-framework-sys",
+ "webpki-root-certs",
+ "windows-sys 0.61.2",
+]
+
+[[package]]
+name = "rustls-platform-verifier-android"
+version = "0.2.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "eec689c0bc40ff2458a5977b6619cb718087084a18e02a131c599b62d05e1a5f"
+
 [[package]]
 name = "rustls-rustcrypto"
 version = "0.0.2-alpha"
@@ -5431,6 +5728,15 @@ dependencies = [
  "winapi-util",
 ]
 
+[[package]]
+name = "schannel"
+version = "0.1.30"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "9cb23c424d8ee841bb4d813677ca237e2a610067d594fec130f87d6093495ab5"
+dependencies = [
+ "windows-sys 0.61.2",
+]
+
 [[package]]
 name = "scoped-tls"
 version = "1.0.1"
@@ -5457,6 +5763,29 @@ dependencies = [
  "zeroize",
 ]
 
+[[package]]
+name = "security-framework"
+version = "3.7.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "b7f4bc775c73d9a02cde8bf7b2ec4c9d12743edf609006c7facc23998404cd1d"
+dependencies = [
+ "bitflags 2.13.2",
+ "core-foundation 0.10.1",
+ "core-foundation-sys",
+ "libc",
+ "security-framework-sys",
+]
+
+[[package]]
+name = "security-framework-sys"
+version = "2.17.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "6ce2691df843ecc5d231c0b14ece2acc3efb62c0a398c7e1d875f3983ce020e3"
+dependencies = [
+ "core-foundation-sys",
+ "libc",
+]
+
 [[package]]
 name = "self_cell"
 version = "1.3.0"
@@ -5468,6 +5797,10 @@ name = "semver"
 version = "1.0.28"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "8a7852d02fc848982e0c167ef163aaff9cd91dc640ba85e263cb1ce46fae51cd"
+dependencies = [
+ "serde",
+ "serde_core",
+]
 
 [[package]]
 name = "send_wrapper"
@@ -5513,9 +5846,9 @@ dependencies = [
 
 [[package]]
 name = "serde_json"
-version = "1.0.151"
+version = "1.0.154"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "c841b55ecdae098c80dcae9cf767f6f8a0c2cdb3416bbef72181df4d0fe73f14"
+checksum = "e7e9cc8b1b85264074fbcc02a88680c4096b1e47df8f739dceb03bf482f04bd6"
 dependencies = [
  "itoa",
  "memchr",
@@ -5551,7 +5884,7 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "a7507d819769d01a365ab707794a4084392c824f54a7a6a7862f8c3d0892b283"
 dependencies = [
  "cfg-if",
- "cpufeatures",
+ "cpufeatures 0.2.17",
  "digest",
 ]
 
@@ -5625,7 +5958,7 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "819ab7d62b1d3e72d9d9dea5650bac30424f9111364bb94928dbf5ecad1baa68"
 dependencies = [
  "bytemuck",
- "read-fonts",
+ "read-fonts 0.41.0",
 ]
 
 [[package]]
@@ -5836,6 +6169,16 @@ dependencies = [
  "walkdir",
 ]
 
+[[package]]
+name = "tar"
+version = "0.4.46"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "3f6221d9a6003c78398e3b239969f352578258df48c8eb051caadae0015bc840"
+dependencies = [
+ "filetime",
+ "libc",
+]
+
 [[package]]
 name = "tempfile"
 version = "3.27.0"
@@ -5846,7 +6189,7 @@ dependencies = [
  "getrandom 0.4.3",
  "once_cell",
  "rustix 1.1.5",
- "windows-sys 0.60.2",
+ "windows-sys 0.61.2",
 ]
 
 [[package]]
@@ -5918,6 +6261,36 @@ dependencies = [
  "zune-jpeg",
 ]
 
+[[package]]
+name = "time"
+version = "0.3.55"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "cdb87b95ec50ddfa440816d227a17b2ccbdda963a316a727fda0fc4334f7d134"
+dependencies = [
+ "deranged",
+ "num-conv",
+ "powerfmt",
+ "serde_core",
+ "time-core",
+ "time-macros",
+]
+
+[[package]]
+name = "time-core"
+version = "0.1.9"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "9e1c906769ad99c88eaa54e728060edef082f8e358ff32030cb7c7d315e81109"
+
+[[package]]
+name = "time-macros"
+version = "0.2.32"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "7e689342a48d2ea927c87ea50cabf8594854bf940e9310208848d680d668ed85"
+dependencies = [
+ "num-conv",
+ "time-core",
+]
+
 [[package]]
 name = "tokio"
 version = "1.53.1"
@@ -6042,6 +6415,12 @@ version = "0.12.3"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "8e28f89b80c87b8fb0cf04ab448d5dd0dd0ade2f8891bae878de66a75a28600e"
 
+[[package]]
+name = "typed-path"
+version = "0.13.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "9ce898823d8cd0f028662d2f349694b1af0a5cc9be83f1d213a00d3147445e1e"
+
 [[package]]
 name = "typenum"
 version = "1.20.1"
@@ -6056,7 +6435,7 @@ checksum = "f2f6fb2847f6742cd76af783a2a2c49e9375d0a111c7bef6f71cd9e738c72d6e"
 dependencies = [
  "memoffset",
  "tempfile",
- "windows-sys 0.60.2",
+ "windows-sys 0.61.2",
 ]
 
 [[package]]
@@ -6152,6 +6531,41 @@ version = "0.9.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "8ecb6da28b8a351d773b68d5825ac39017e680750f980f3a1a85cd8dd28a47c1"
 
+[[package]]
+name = "ureq"
+version = "3.4.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "9a7ac20be9b7726e0bbdbf974c059676d9acb1cd414961f570a4e8231cacd7fc"
+dependencies = [
+ "base64",
+ "flate2",
+ "log",
+ "percent-encoding",
+ "rustls",
+ "rustls-pki-types",
+ "rustls-platform-verifier",
+ "ureq-proto",
+ "utf8-zero",
+]
+
+[[package]]
+name = "ureq-proto"
+version = "0.6.5"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "841583fc36089d7d59419568ae157f43a5a03a2e5a81ba87c77d1596ef46e922"
+dependencies = [
+ "base64",
+ "http",
+ "httparse",
+ "log",
+]
+
+[[package]]
+name = "utf8-zero"
+version = "0.8.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "b8c0a043c9540bae7c578c88f91dda8bd82e59ae27c21baca69c8b191aaf5a6e"
+
 [[package]]
 name = "uuid"
 version = "1.26.1"
@@ -6201,6 +6615,16 @@ dependencies = [
  "vello_common",
 ]
 
+[[package]]
+name = "verifysign"
+version = "1.0.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "6acfcc42a8d44f340d001193d97ef56bf33210b51ad760ae8308c97d5241ca51"
+dependencies = [
+ "core-foundation 0.10.1",
+ "windows-sys 0.61.2",
+]
+
 [[package]]
 name = "version_check"
 version = "0.9.5"
@@ -6416,7 +6840,7 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "338e30461b3a2b67d70eb30a6d89f8e0c93a833e07d2ae89085cd070c4a00ac0"
 dependencies = [
  "proc-macro2",
- "quick-xml",
+ "quick-xml 0.41.0",
  "quote",
 ]
 
@@ -6453,10 +6877,19 @@ dependencies = [
 ]
 
 [[package]]
-name = "webpki-roots"
-version = "1.0.9"
+name = "webpki-root-certs"
+version = "1.0.11"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "7dcd9d09a39985f5344844e66b0c530a33843579125f23e21e9f0f220850f22a"
+checksum = "e49d0e65abc00c142e8f9428da991da9f1a250c39be97459901eb12b9b49f62a"
+dependencies = [
+ "rustls-pki-types",
+]
+
+[[package]]
+name = "webpki-roots"
+version = "1.0.10"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "1c1c8e20c8a38fc7d65abfe74eb7280e4aa667e8eec8bc84996d2874810748d9"
 dependencies = [
  "rustls-pki-types",
 ]
@@ -6595,7 +7028,7 @@ dependencies = [
  "naga",
  "naga-types",
  "ndk-sys",
- "objc2 0.6.4",
+ "objc2 0.6.5",
  "objc2-core-foundation",
  "objc2-core-graphics",
  "objc2-foundation 0.3.2",
@@ -6656,7 +7089,7 @@ version = "0.1.11"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "c2a7b1c03c876122aa43f3020e6c3c3ee5c05081c9a00739faf7503aeba10d22"
 dependencies = [
- "windows-sys 0.60.2",
+ "windows-sys 0.61.2",
 ]
 
 [[package]]
@@ -6766,16 +7199,16 @@ version = "0.52.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "282be5f36a8ce781fad8c8ae18fa3f9beff57ec1b52cb3de0789201425d9a33d"
 dependencies = [
- "windows-targets 0.52.6",
+ "windows-targets",
 ]
 
 [[package]]
 name = "windows-sys"
-version = "0.60.2"
+version = "0.59.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "f2f500e4d28234f72040990ec9d39e3a6b950f9f22d3dba18416c35882612bcb"
+checksum = "1e38bc4d79ed67fd075bcc251a1c39b32a1776bbe92e5bef1f0bf1f8c531853b"
 dependencies = [
- "windows-targets 0.53.5",
+ "windows-targets",
 ]
 
 [[package]]
@@ -6793,31 +7226,14 @@ version = "0.52.6"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "9b724f72796e036ab90c1021d4780d4d3d648aca59e491e6b98e725b84e99973"
 dependencies = [
- "windows_aarch64_gnullvm 0.52.6",
- "windows_aarch64_msvc 0.52.6",
- "windows_i686_gnu 0.52.6",
- "windows_i686_gnullvm 0.52.6",
- "windows_i686_msvc 0.52.6",
- "windows_x86_64_gnu 0.52.6",
- "windows_x86_64_gnullvm 0.52.6",
- "windows_x86_64_msvc 0.52.6",
-]
-
-[[package]]
-name = "windows-targets"
-version = "0.53.5"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "4945f9f551b88e0d65f3db0bc25c33b8acea4d9e41163edf90dcd0b19f9069f3"
-dependencies = [
- "windows-link",
- "windows_aarch64_gnullvm 0.53.1",
- "windows_aarch64_msvc 0.53.1",
- "windows_i686_gnu 0.53.1",
- "windows_i686_gnullvm 0.53.1",
- "windows_i686_msvc 0.53.1",
- "windows_x86_64_gnu 0.53.1",
- "windows_x86_64_gnullvm 0.53.1",
- "windows_x86_64_msvc 0.53.1",
+ "windows_aarch64_gnullvm",
+ "windows_aarch64_msvc",
+ "windows_i686_gnu",
+ "windows_i686_gnullvm",
+ "windows_i686_msvc",
+ "windows_x86_64_gnu",
+ "windows_x86_64_gnullvm",
+ "windows_x86_64_msvc",
 ]
 
 [[package]]
@@ -6835,96 +7251,48 @@ version = "0.52.6"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "32a4622180e7a0ec044bb555404c800bc9fd9ec262ec147edd5989ccd0c02cd3"
 
-[[package]]
-name = "windows_aarch64_gnullvm"
-version = "0.53.1"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "a9d8416fa8b42f5c947f8482c43e7d89e73a173cead56d044f6a56104a6d1b53"
-
 [[package]]
 name = "windows_aarch64_msvc"
 version = "0.52.6"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "09ec2a7bb152e2252b53fa7803150007879548bc709c039df7627cabbd05d469"
 
-[[package]]
-name = "windows_aarch64_msvc"
-version = "0.53.1"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "b9d782e804c2f632e395708e99a94275910eb9100b2114651e04744e9b125006"
-
 [[package]]
 name = "windows_i686_gnu"
 version = "0.52.6"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "8e9b5ad5ab802e97eb8e295ac6720e509ee4c243f69d781394014ebfe8bbfa0b"
 
-[[package]]
-name = "windows_i686_gnu"
-version = "0.53.1"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "960e6da069d81e09becb0ca57a65220ddff016ff2d6af6a223cf372a506593a3"
-
 [[package]]
 name = "windows_i686_gnullvm"
 version = "0.52.6"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "0eee52d38c090b3caa76c563b86c3a4bd71ef1a819287c19d586d7334ae8ed66"
 
-[[package]]
-name = "windows_i686_gnullvm"
-version = "0.53.1"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "fa7359d10048f68ab8b09fa71c3daccfb0e9b559aed648a8f95469c27057180c"
-
 [[package]]
 name = "windows_i686_msvc"
 version = "0.52.6"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "240948bc05c5e7c6dabba28bf89d89ffce3e303022809e73deaefe4f6ec56c66"
 
-[[package]]
-name = "windows_i686_msvc"
-version = "0.53.1"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "1e7ac75179f18232fe9c285163565a57ef8d3c89254a30685b57d83a38d326c2"
-
 [[package]]
 name = "windows_x86_64_gnu"
 version = "0.52.6"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "147a5c80aabfbf0c7d901cb5895d1de30ef2907eb21fbbab29ca94c5b08b1a78"
 
-[[package]]
-name = "windows_x86_64_gnu"
-version = "0.53.1"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "9c3842cdd74a865a8066ab39c8a7a473c0778a3f29370b5fd6b4b9aa7df4a499"
-
 [[package]]
 name = "windows_x86_64_gnullvm"
 version = "0.52.6"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "24d5b23dc417412679681396f2b49f3de8c1473deb516bd34410872eff51ed0d"
 
-[[package]]
-name = "windows_x86_64_gnullvm"
-version = "0.53.1"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "0ffa179e2d07eee8ad8f57493436566c7cc30ac536a3379fdf008f47f6bb7ae1"
-
 [[package]]
 name = "windows_x86_64_msvc"
 version = "0.52.6"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "589f6da84c646204747d1270a2a5661ea66ed1cced2631d546fdfb155959f9ec"
 
-[[package]]
-name = "windows_x86_64_msvc"
-version = "0.53.1"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "d6bbff5f0aada427a1e5a6da5f1f98158182f26556f345ac9e04d36d0ebed650"
-
 [[package]]
 name = "winit"
 version = "0.30.13"
@@ -6939,7 +7307,7 @@ dependencies = [
  "calloop 0.13.0",
  "cfg_aliases",
  "concurrent-queue",
- "core-foundation",
+ "core-foundation 0.9.4",
  "core-graphics",
  "cursor-icon",
  "dpi",
@@ -6985,15 +7353,31 @@ dependencies = [
 ]
 
 [[package]]
-name = "winresource"
-version = "0.1.31"
+name = "winreg"
+version = "0.55.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "0986a8b1d586b7d3e4fe3d9ea39fb451ae22869dcea4aa109d287a374d866087"
+checksum = "cb5a765337c50e9ec252c2069be9bf91c7df47afb103b642ba3a53bf8101be97"
+dependencies = [
+ "cfg-if",
+ "windows-sys 0.59.0",
+]
+
+[[package]]
+name = "winresource"
+version = "0.1.34"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "a2bc6d36480b829272a5bdabf08e6dca8004761c1da7e35efef800540c66221b"
 dependencies = [
  "toml",
  "version_check",
 ]
 
+[[package]]
+name = "winsafe"
+version = "0.0.29"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "9ef0ffc427f045c0cc9ebffd6f4f91153dcd2a1547b5c3c29ee3f541e16e95c6"
+
 [[package]]
 name = "wit-bindgen"
 version = "0.57.1"
@@ -7331,7 +7715,24 @@ dependencies = [
  "crc32fast",
  "indexmap",
  "memchr",
- "typed-path",
+ "typed-path 0.12.3",
+]
+
+[[package]]
+name = "zip"
+version = "9.1.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "2886b00003a72c4ccee3f42cfc34908d33b2508a74d827dc2a4244706475c704"
+dependencies = [
+ "crc32fast",
+ "flate2",
+ "getrandom 0.4.3",
+ "indexmap",
+ "memchr",
+ "nix",
+ "typed-path 0.13.0",
+ "windows-sys 0.61.2",
+ "zopfli",
 ]
 
 [[package]]
@@ -7346,6 +7747,18 @@ version = "1.0.23"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "29666d0abbfad1e3dc4dcf6144730dd3a3ab225bbbdac83319345b1b44ccfc1b"
 
+[[package]]
+name = "zopfli"
+version = "0.8.4"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "aaf7fc5d30c28483d93805c4a5e12b05bbb52407fa67c5f8bd552374cd01fb11"
+dependencies = [
+ "bumpalo",
+ "crc32fast",
+ "log",
+ "simd-adler32",
+]
+
 [[package]]
 name = "zune-core"
 version = "0.5.3"
diff --git a/Cargo.toml b/Cargo.toml
index f61b3b868..b68c6e6ba 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -12,7 +12,8 @@ repository = "https://github.com/storytold/lightcraft"
 [workspace.dependencies]
 craft-ui = { git = "https://github.com/storytold/craft-libs", rev = "25da1314d443171b4adeaad2cd9454b273f35c6f", features = ["serde"] }
 craft-docpath = { version = "0.1.0", git = "https://github.com/storytold/craft-libs", rev = "82a24b006eefa036b43c09a67fb9a3fbd17ffe63" }
-craft-window = { git = "https://github.com/storytold/craft-libs", rev = "a0916808f7d78bed8c7b90cdf937176015454a7f", features = ["egui"] }
+craft-window = { git = "https://github.com/storytold/craft-libs", rev = "1e6f127844ec61b3b8afdcc2bb76e7cfe470153f", features = ["egui"] }
+craft-update = { git = "https://github.com/storytold/craft-libs", version = "=0.1.0", rev = "495e5971bc024aa96e6ed318cb6e7cd3a0103184", features = ["egui"] }
 # internal
 lightcraft-denoise-core = { path = "crates/denoise-core" }
 lightcraft-denoise = { path = "crates/denoise", default-features = false }
@@ -62,7 +63,7 @@ dhat = "0.3" # opt-in heap profiling (lightcraft-cli --features dhat-heap) and h
 
 # formats
 quick-xml = "0.41"
-miniz_oxide = "0.8"
+miniz_oxide = "0.9"
 
 # codecs
 image = { version = "0.25", default-features = false, features = ["png", "jpeg", "tiff", "webp"] }
diff --git a/README.md b/README.md
index 78b3b3234..71f30d4c2 100644
--- a/README.md
+++ b/README.md
@@ -348,7 +348,7 @@ LightCraft is young and moving fast: **alpha**. **Where we honestly stand** (det
   casual use.** It's great for JPEG/DNG and most Sony / Panasonic /
   Fujifilm / Nikon / older-Canon raws on one machine; see [docs/raw-parity.md](docs/raw-parity.md) for your camera.
 - **The biggest gaps:**
-  - **camera colour calibration:** Sony, Nikon, Panasonic, Fujifilm and Canon CR3 raws have guarded estimates from their camera JPEGs, with built-in ILCA-99M2, ILCE-7CR, ILCE-7M4, X-H2S, X-T4, Nikon Z 6II, Z 8 and D5300 profiles; measured calibration is missing, and other raws or rejected fits retain a neutral matrix;
+  - **camera colour calibration:** Sony, Nikon, Panasonic, Fujifilm and Canon CR3 raws have guarded estimates from their camera JPEGs, with built-in ILCA-99M2, ILCE-7CR, ILCE-7M4, ILCE-7RM5, X-H2S, X-T4, Nikon Z 6II, Z 8 and D5300 profiles; measured calibration is missing, and other raws or rejected fits retain a neutral matrix;
   - **compressed Olympus raws and unsupported CR3 variants:** these use embedded JPEG previews when present. Fujifilm lossless/lossy compressed RAF now decodes sensor data; [verification and existing-library reload instructions](docs/raf-compression.md);
   - **AI quality and model setup:** Subject and Sky selection are classical heuristics; Object/Describe use an
     optional SAM 3 model. AI Denoise supports Bayer RAW with separately installed weights, while X-Trans and
diff --git a/README.zh-hans.md b/README.zh-hans.md
index 2800db410..2c6ca8191 100644
--- a/README.zh-hans.md
+++ b/README.zh-hans.md
@@ -305,7 +305,7 @@ LightCraft 很年轻，而且进展很快。**我们如实所处的位置**（
 - **作为日常使用的工具，我们更接近 60–70%。** 在单台机器上处理 JPEG/DNG 以及大多数尼康／索尼／
   较老佳能的 raw 都很出色。
 - **最大的缺口：**
-  - **相机色彩校准：** 索尼、尼康、松下、富士和佳能 CR3 的 raw 会从各自的相机 JPEG 得到受保护的估计值，内置 ILCA-99M2、ILCE-7CR、ILCE-7M4、X-H2S、X-T4、尼康 Z 6II、Z 8 和 D5300 配置文件；实测校准仍然缺失，其他 raw 或被拒绝的拟合会保留中性矩阵；
+  - **相机色彩校准：** 索尼、尼康、松下、富士和佳能 CR3 的 raw 会从各自的相机 JPEG 得到受保护的估计值，内置 ILCA-99M2、ILCE-7CR、ILCE-7M4、ILCE-7RM5、X-H2S、X-T4、尼康 Z 6II、Z 8 和 D5300 配置文件；实测校准仍然缺失，其他 raw 或被拒绝的拟合会保留中性矩阵；
   - **压缩的奥林巴斯 raw 和不受支持的 CR3 变体：** 这些在有内嵌 JPEG 预览时使用预览。富士无损／有损压缩 RAF 现在能解码传感器数据；[验证与已有图库重新加载说明](docs/raf-compression.md)；
   - **AI 蒙版与降噪：** 主体和天空选择目前是经典启发式算法；
   - **屏幕上的 HDR 显示、视频，以及经典版式中的打印／画册／地图模块。**
diff --git a/README.zh-hant.md b/README.zh-hant.md
index 12fcfb11b..ca624ce68 100644
--- a/README.zh-hant.md
+++ b/README.zh-hant.md
@@ -320,7 +320,7 @@ LightCraft 還很年輕，而且進展飛快：**Alpha 階段**。**老實說，
   在單機上處理 JPEG/DNG，以及大多數 Sony／Panasonic／
   Fujifilm／Nikon／較舊款 Canon 的 raw 都很出色；各機型詳情見 [docs/raw-parity.md](docs/raw-parity.md)。
 - **最大的缺口：**
-  - **相機色彩校正：** Sony、Nikon、Panasonic、Fujifilm 和 Canon CR3 的 raw 會從各自的相機 JPEG 得到受保護的估計值，內建 ILCA-99M2、ILCE-7CR、ILCE-7M4、X-H2S、X-T4、Nikon Z 6II、Z 8 和 D5300 描述檔；仍缺少實測校正，其他 raw 或被拒絕的擬合會保留中性矩陣；
+  - **相機色彩校正：** Sony、Nikon、Panasonic、Fujifilm 和 Canon CR3 的 raw 會從各自的相機 JPEG 得到受保護的估計值，內建 ILCA-99M2、ILCE-7CR、ILCE-7M4、ILCE-7RM5、X-H2S、X-T4、Nikon Z 6II、Z 8 和 D5300 描述檔；仍缺少實測校正，其他 raw 或被拒絕的擬合會保留中性矩陣；
   - **壓縮的 Olympus raw 與不受支援的 CR3 變體：** 這些在有內嵌 JPEG 預覽時會改用預覽畫面。Fujifilm 無損／有損壓縮 RAF 現在能解碼感光元件資料；[驗證與現有照片庫重新載入說明](docs/raf-compression.md)；
   - **AI 遮色片與降噪：** 主體與天空選取目前是傳統啟發式演算法；
   - **網路照片庫：** 預覽只讀取 raw 的標頭 — 或者，對於 CR3 或預覽標籤位於其後的 TIFF raw，只讀取稀疏規劃器指定的範圍 — 以及其內嵌的 JPEG（56.5 MB → 5.9 MB，10 秒 → 1 秒，測得於測試用的網路共用資料夾），但*顯影後*的畫面仍需要透過網路傳輸感光元件資料；詳見 [docs/raw-preview-reads.md](docs/raw-preview-reads.md)；
diff --git a/apps/lightcraft/Cargo.toml b/apps/lightcraft/Cargo.toml
index f93bd2ccd..d00bc41e9 100644
--- a/apps/lightcraft/Cargo.toml
+++ b/apps/lightcraft/Cargo.toml
@@ -55,3 +55,6 @@ objc2-foundation = { workspace = true }
 [dev-dependencies]
 # tests record why they skip (`cargo xtask ci` lists the skips)
 lightcraft-testkit = { workspace = true }
+
+[target.'cfg(windows)'.dependencies]
+craft-update = { workspace = true }
diff --git a/apps/lightcraft/src/main.rs b/apps/lightcraft/src/main.rs
index b666a0cdc..815fbd70f 100644
--- a/apps/lightcraft/src/main.rs
+++ b/apps/lightcraft/src/main.rs
@@ -881,6 +881,11 @@ fn panic_log_path_with(env: impl Fn(&str) -> Option<std::ffi::OsString>, temp: s
 }
 
 fn main() -> eframe::Result {
+    // Windows: the update helper is a copy of this program started with `--finish-update`.
+    #[cfg(windows)]
+    if let Some(result) = craft_update::self_update::finish(&craft_update::suite::LIGHTCRAFT, &std::env::args_os().skip(1).collect::<Vec<_>>()) {
+        std::process::exit(i32::from(result.is_err()));
+    }
     // First, so every start-up record is kept for the log file (`logging`).
     let logger = logging::install();
     lightcraft_engine::guard::install_hook(panic_log_path_with(|name| std::env::var_os(name), std::env::temp_dir()));
@@ -1009,6 +1014,7 @@ fn main() -> eframe::Result {
                 // HDR display: SDR unless the surface, platform and display all allow HDR
                 hdr_display::report(cc.wgpu_render_state.as_ref().map(|r| r.target_format));
                 let mut app = LightcraftApp::new(session, services(cc, app_log_file.as_deref()));
+                app.set_startup_update_check(true);
                 if let Some(ui) = prefs {
                     app.ui = ui;
                 }
diff --git a/assets/ATTRIBUTION.md b/assets/ATTRIBUTION.md
index 4bc2e927e..e5ed8090e 100644
--- a/assets/ATTRIBUTION.md
+++ b/assets/ATTRIBUTION.md
@@ -22,6 +22,7 @@ covers a whole directory), or if a licence file referenced in the Licence column
 | `assets/camera-profiles/NIKON_Z_6_2.json` | Nikon Z 6II camera colour profile (matrix + hue/saturation/value table), built into LightCraft | Michael Anderson (@endthestart) | original work: fitted by `lightcraft-cli calibrate` to 296 usable Z 6II NEFs of my own (of 299, 2024 to 2026, Standard and Auto picture controls; NIKKOR Z 20mm f/1.8 S, Z 24-70mm f/4 S and AF-S 70-200mm f/2.8G on the FTZ) and their in-camera JPEGs; aggregate colour statistics only, no image content; no Adobe or third-party profile data | MIT OR Apache-2.0 | 2026-10-13 | none |
 | `assets/camera-profiles/NIKON_Z_8.json` | Nikon Z 8 camera colour profile (matrix + hue/saturation/value table), built into LightCraft | Michael Anderson (@endthestart) | original work: fitted by `lightcraft-cli calibrate` to 261 usable Z 8 NEFs of my own (of 278, 2023 and 2026, nearly all Standard picture control, lossless 14-bit; NIKKOR Z 24-120mm f/4 S and AF-S 70-200mm f/2.8G on the FTZ) and their in-camera JPEGs; aggregate colour statistics only, no image content; no Adobe or third-party profile data | MIT OR Apache-2.0 | 2026-10-13 | none |
 | `assets/camera-profiles/NIKON_D5300.json` | Nikon D5300 camera colour profile (matrix + hue/saturation/value table), built into LightCraft | Michael Anderson (@endthestart) | original work: fitted by `lightcraft-cli calibrate` to 264 usable D5300 NEFs of my own (of 273, 2014 to 2017, mostly Standard picture control, lossy 12-bit, mostly the AF-S DX 35mm f/1.8G) and their in-camera JPEGs; aggregate colour statistics only, no image content; no Adobe or third-party profile data | MIT OR Apache-2.0 | 2026-10-13 | none |
+| `assets/camera-profiles/ILCE-7RM5.json` | Sony ILCE-7RM5 camera colour profile (matrix + hue/saturation/value table), built into LightCraft | Yule (Brian) Wang (@peaperfish) | original work: fitted by `lightcraft-cli calibrate` to 220 usable ILCE-7RM5 ARWs of my own (of 241, 2025 to 2026, Standard creative style; Sigma 24-70mm F2.8 DG DN II Art and Sony FE 200-600mm F5.6-6.3 G OSS) and their in-camera JPEGs; aggregate colour statistics only, no image content; no Adobe or third-party profile data | MIT OR Apache-2.0 | 2026-10-26 | none |
 | `crates/raw/src/spectral_table.rs` | Camera colour matrices (DNG ColorMatrix1/2 and ForwardMatrix1/2 for Standard Illuminant A and D65) for 52 camera models, and the model alias list | Derived by LightCraft contributors from rawtoaces-data (Academy Software Foundation): camera spectral sensitivities measured by Weta Digital (44 cameras), scitech (7) and Jonathon Irons at the National Physical Laboratory (Nikon D5100); training reflectances; CIE 1931 colour-matching functions (CIE, CC-BY-4.0, as shipped in rawtoaces-data) | https://github.com/AcademySoftwareFoundation/rawtoaces-data, tag v1.1.0, commit 5cfa53707b053594b2d0d48e8019fb56e6582d6c | Apache-2.0 (`LICENSE-APACHE`); the colour-matching functions CC-BY-4.0 | 2026-10-08 | generated by `tools/spectral_camera_table.py`: a 3×3 matrix per illuminant fitted to the spectral data (no measurement copied verbatim); aliases copied from `data/aliases.json`; no Adobe or third-party camera matrix |
 | `assets/camera-tone/sony-dro-off.json` | Sony global tone curve with the Dynamic Range Optimizer off (32 knots), built into LightCraft for ARWs shot with DRO on | LightCraft contributors; source photographs by raw.pixls.us contributors | original work: tone curve quantile-matched over the pooled pixel pairs of 12 CC0 raw.pixls.us ARWs (DRO off, Standard creative style; ILCE-3500, -5000, -6600, -7CR, -7M3 ×3, -7S, -9M2, ILCA-77M2, SLT-A57, NEX-F3) and their embedded camera JPEGs; the file lists each source URL and SHA-256 and how the curve was derived (see also `docs/camera-preview-colour.md`); aggregate tone statistics only, no image content; no Adobe or third-party profile data | MIT OR Apache-2.0 (sources CC0) | 2026-10-09 | none |
 | `crates/scenes/` (generated images) | Procedural demo photographs | LightCraft contributors | original work (generated at runtime, no source imagery) | MIT OR Apache-2.0 | 2026-09-30 | n/a |
diff --git a/assets/camera-profiles/ILCE-7RM5.json b/assets/camera-profiles/ILCE-7RM5.json
new file mode 100644
index 000000000..787bfb062
--- /dev/null
+++ b/assets/camera-profiles/ILCE-7RM5.json
@@ -0,0 +1,9031 @@
+{
+  "version": 1,
+  "model": "ILCE-7RM5",
+  "files": 220,
+  "samples": 790553,
+  "matrix": [
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+      1.937872050399747
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+  ],
+  "hue_sat": {
+    "hue_divisions": 72,
+    "sat_divisions": 5,
+    "val_divisions": 5,
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+        1.0
+      ],
+      [
+        0.0,
+        1.0,
+        1.0
+      ],
+      [
+        0.008486173,
+        0.9998458,
+        1.0
+      ],
+      [
+        0.00014019103,
+        0.99998724,
+        1.0
+      ],
+      [
+        -0.0017433885,
+        0.99999154,
+        1.0
+      ],
+      [
+        -0.00032057063,
+        0.99999845,
+        1.0
+      ],
+      [
+        0.0,
+        1.0,
+        1.0
+      ],
+      [
+        -0.005678298,
+        0.9997919,
+        1.0
+      ],
+      [
+        -0.0006329326,
+        0.99999183,
+        1.0
+      ],
+      [
+        -0.000014824767,
+        1.0,
+        1.0
+      ],
+      [
+        -0.0000014804741,
+        1.0,
+        1.0
+      ],
+      [
+        0.0,
+        1.0,
+        1.0
+      ],
+      [
+        0.024680974,
+        0.9990245,
+        1.0
+      ],
+      [
+        0.0004288364,
+        0.9999345,
+        1.0
+      ],
+      [
+        -0.000051545532,
+        0.99999934,
+        1.0
+      ],
+      [
+        -0.000005476217,
+        0.99999994,
+        1.0
+      ],
+      [
+        0.0,
+        1.0,
+        1.0
+      ],
+      [
+        0.0061284457,
+        0.9994695,
+        1.0
+      ],
+      [
+        -0.0008772137,
+        0.9999514,
+        1.0
+      ],
+      [
+        -0.0005471564,
+        0.9999964,
+        1.0
+      ],
+      [
+        -0.00011416538,
+        0.99999934,
+        1.0
+      ],
+      [
+        0.0,
+        1.0,
+        1.0
+      ],
+      [
+        0.019823374,
+        0.99714184,
+        1.0
+      ],
+      [
+        0.0006233722,
+        0.99973315,
+        1.0
+      ],
+      [
+        -0.00020987287,
+        0.99999684,
+        1.0
+      ],
+      [
+        -0.000045174842,
+        0.99999976,
+        1.0
+      ],
+      [
+        0.0,
+        1.0,
+        1.0
+      ],
+      [
+        0.0055233804,
+        0.99932915,
+        1.0
+      ],
+      [
+        0.00019314369,
+        0.999932,
+        1.0
+      ],
+      [
+        -0.000004102488,
+        0.9999994,
+        1.0
+      ],
+      [
+        -3.2671397e-7,
+        1.0,
+        1.0
+      ],
+      [
+        0.0,
+        1.0,
+        1.0
+      ],
+      [
+        0.017069608,
+        0.99980605,
+        1.0
+      ],
+      [
+        0.0011378126,
+        0.9999736,
+        1.0
+      ],
+      [
+        0.0000045061006,
+        0.9999994,
+        1.0
+      ],
+      [
+        4.9558377e-8,
+        1.0,
+        1.0
+      ],
+      [
+        0.0,
+        1.0,
+        1.0
+      ],
+      [
+        0.0025704305,
+        0.9998648,
+        1.0
+      ],
+      [
+        -0.00016181398,
+        0.9999653,
+        1.0
+      ],
+      [
+        -0.000009765289,
+        0.9999992,
+        1.0
+      ],
+      [
+        -2.9514266e-7,
+        1.0,
+        1.0
+      ],
+      [
+        0.0,
+        1.0,
+        1.0
+      ],
+      [
+        0.011738374,
+        0.99957114,
+        1.0
+      ],
+      [
+        0.0013190353,
+        0.99990016,
+        1.0
+      ],
+      [
+        9.2287684e-7,
+        0.99999744,
+        1.0
+      ],
+      [
+        -0.0000011511228,
+        1.0,
+        1.0
+      ],
+      [
+        0.0,
+        1.0,
+        1.0
+      ],
+      [
+        0.04013104,
+        0.99884504,
+        1.0
+      ],
+      [
+        0.00018569271,
+        0.99945897,
+        1.0
+      ],
+      [
+        -0.0010192711,
+        0.9999544,
+        1.0
+      ],
+      [
+        -0.000013688198,
+        0.9999996,
+        1.0
+      ],
+      [
+        0.0,
+        1.0,
+        1.0
+      ],
+      [
+        -0.02411725,
+        0.99782336,
+        1.0
+      ],
+      [
+        -0.09172129,
+        0.9966743,
+        1.0
+      ],
+      [
+        -0.017824568,
+        0.9994446,
+        1.0
+      ],
+      [
+        -0.00024212734,
+        0.9999933,
+        1.0
+      ],
+      [
+        0.0,
+        1.0,
+        1.0
+      ],
+      [
+        -0.0085046105,
+        0.9991983,
+        1.0
+      ],
+      [
+        -0.032236904,
+        0.9988923,
+        1.0
+      ],
+      [
+        -0.03258688,
+        0.9995004,
+        1.0
+      ],
+      [
+        -0.022160465,
+        0.99972326,
+        1.0
+      ],
+      [
+        0.0,
+        1.0,
+        1.0
+      ],
+      [
+        -0.047657337,
+        0.9974346,
+        1.0
+      ],
+      [
+        -0.17287616,
+        0.9967666,
+        1.0
+      ],
+      [
+        -1.7228909,
+        0.97827595,
+        1.0
+      ],
+      [
+        -1.5301245,
+        0.9807228,
+        1.0
+      ],
+      [
+        0.0,
+        1.0,
+        1.0
+      ],
+      [
+        -0.1092619,
+        0.9939699,
+        1.0
+      ],
+      [
+        -0.28823772,
+        0.9942406,
+        1.0
+      ],
+      [
+        -2.4151208,
+        0.9694442,
+        1.0
+      ],
+      [
+        -2.120977,
+        0.973369,
+        1.0
+      ],
+      [
+        0.0,
+        1.0,
+        1.0
+      ],
+      [
+        -0.046760842,
+        0.99341387,
+        1.0
+      ],
+      [
+        -0.46058732,
+        0.9879337,
+        1.0
+      ],
+      [
+        -0.9992375,
+        0.97709274,
+        1.0
+      ],
+      [
+        -0.27791965,
+        0.9942543,
+        1.0
+      ],
+      [
+        0.0,
+        1.0,
+        1.0
+      ],
+      [
+        -0.055317637,
+        0.988727,
+        1.0
+      ],
+      [
+        -0.7323104,
+        0.971684,
+        1.0
+      ],
+      [
+        -2.933847,
+        0.90179116,
+        1.0
+      ],
+      [
+        -1.3042065,
+        0.95250934,
+        1.0
+      ]
+    ],
+    "srgb_value": true
+  }
+}
\ No newline at end of file
diff --git a/crates/denoise-core/Cargo.toml b/crates/denoise-core/Cargo.toml
index b65f90ae4..d0a0b10c1 100644
--- a/crates/denoise-core/Cargo.toml
+++ b/crates/denoise-core/Cargo.toml
@@ -24,3 +24,4 @@ web-time = { workspace = true }
 
 [dev-dependencies]
 proptest = { workspace = true }
+dhat = { workspace = true }
diff --git a/crates/denoise-core/src/product.rs b/crates/denoise-core/src/product.rs
index 5a607c8f4..c33b1d4c2 100644
--- a/crates/denoise-core/src/product.rs
+++ b/crates/denoise-core/src/product.rs
@@ -9,7 +9,7 @@
 //! compressed length and CRC-32, then the strips' bytes. `key` says what the product was made from (the photo's
 //! content, the model, this code's version, the settings it depends on); a file with another key is stale.
 
-use std::io::{Read, Write};
+use std::io::{Read, Seek, Write};
 use std::path::Path;
 
 use lightcraft_raster::Rgb32f;
@@ -216,6 +216,10 @@ fn read_start(r: &mut impl Read) -> Result<Start, ProductError> {
         r.read_exact(&mut e)?;
         let l = u32::from_le_bytes([e[0], e[1], e[2], e[3]]) as usize;
         let c = u32::from_le_bytes([e[4], e[5], e[6], e[7]]);
+        // a strip never compresses to nothing (it has at least one row, so at least one deflated pixel)
+        if l == 0 {
+            return Err(ProductError::Format("a strip is empty".into()));
+        }
         // a strip never compresses to much more than its raw size
         if l > 12 * h.strip * h.width + 4096 {
             return Err(ProductError::Format("a strip is larger than it can be".into()));
@@ -305,7 +309,6 @@ pub fn read_window(path: &Path, key: &str, window: Option<Window>, factor: usize
     }
     // the picture rows and columns the blocks cover
     let (x_end, y_end) = if whole { (w.x + w.width, w.y + w.height) } else { (w.x + ow * factor, w.y + oh * factor) };
-    let mut out = Rgb32f { width: ow, height: oh, data: allocate(ow * oh, [0.0; 3])? };
     let lut = f16_table();
     let value = |raw: &[u8], c: usize, n: usize, i: usize| -> f32 {
         let (lo, hi) = (raw.get(2 * c * n + i).copied().unwrap_or(0), raw.get((2 * c + 1) * n + i).copied().unwrap_or(0));
@@ -318,6 +321,21 @@ pub fn read_window(path: &Path, key: &str, window: Option<Window>, factor: usize
     let strips: Vec<usize> = (0..table.len()).filter(|&s| wanted(s)).collect();
     // skip the strips before the first one wanted
     let skipped: usize = table.iter().take(strips.first().copied().unwrap_or(0)).map(|e| e.0).sum();
+    // The output is reserved only after the wanted strips' compressed bytes are present and match their checksums:
+    // a malformed cache whose strips are empty, damaged or short are rejected here, before the (large) result is
+    // allocated, not after. Reading them twice is cheap next to decoding them, and the fold below re-seeks here.
+    let strips_at = f.stream_position()?;
+    f.seek_relative(i64::try_from(skipped).map_err(|_| ProductError::Format("the file is too large".into()))?)?;
+    for &s in &strips {
+        let Some(&(len, expected)) = table.get(s) else { return Err(ProductError::Format("a strip is missing".into())) };
+        let mut packed = allocate(len, 0u8)?;
+        f.read_exact(&mut packed)?;
+        if crc(&packed) != expected {
+            return Err(ProductError::Format(format!("strip {s} is damaged")));
+        }
+    }
+    let mut out = Rgb32f { width: ow, height: oh, data: allocate(ow * oh, [0.0; 3])? };
+    f.seek(std::io::SeekFrom::Start(strips_at))?;
     f.seek_relative(i64::try_from(skipped).map_err(|_| ProductError::Format("the file is too large".into()))?)?;
     for group in strips.chunks(GROUP) {
         let mut packed = Vec::with_capacity(group.len());
@@ -422,6 +440,21 @@ mod tests {
         let _ = std::fs::remove_file(p);
     }
 
+    #[test]
+    fn an_empty_strip_entry_is_rejected_by_the_header() {
+        let p = temp("empty-strip");
+        let header = serde_json::to_vec(&Header { width: 16, height: 1, strip: STRIP_ROWS, key: "k".into() }).unwrap();
+        let mut bytes = Vec::from(MAGIC.as_slice());
+        bytes.extend_from_slice(&[VERSION, 0, 0, 0]);
+        bytes.extend_from_slice(&(header.len() as u32).to_le_bytes());
+        bytes.extend_from_slice(&header);
+        // one strip with a zero-length entry: it has a row, so its deflated bytes are never empty
+        bytes.extend_from_slice(&[0; 8]);
+        std::fs::write(&p, bytes).unwrap();
+        assert!(matches!(read_header_at(&p), Err(ProductError::Format(why)) if why.contains("empty")));
+        let _ = std::fs::remove_file(p);
+    }
+
     fn temp(name: &str) -> std::path::PathBuf {
         std::env::temp_dir().join(format!("lc-denoise-{name}-{}.lcdn", std::process::id()))
     }
diff --git a/crates/denoise-core/tests/product_heap.rs b/crates/denoise-core/tests/product_heap.rs
new file mode 100644
index 000000000..40c170861
--- /dev/null
+++ b/crates/denoise-core/tests/product_heap.rs
@@ -0,0 +1,50 @@
+//! Peak heap of a `read_window` that must reject a product's strips (`crates/denoise-core/src/product.rs`), measured
+//! with dhat's testing mode. The result is allocated only after the wanted strips' checksums are verified, so a cache
+//! whose compressed bytes are damaged or absent fails without first reserving the (multi-megabyte) output. One test
+//! per binary (dhat's profiler is global).
+
+use lightcraft_denoise_core::product::read_window;
+
+#[global_allocator]
+static ALLOC: dhat::Alloc = dhat::Alloc;
+
+fn temp(name: &str) -> std::path::PathBuf {
+    std::env::temp_dir().join(format!("lc-denoise-{name}-{}.lcdn", std::process::id()))
+}
+
+/// A 2000 × 1024 product of key `k` (a 24 MB result): its 8 strips each claim 8 bytes that do not match their
+/// checksum, and the file is exactly the length its header and table declare. A 24 MB peak means the output was
+/// reserved; the cap here bounds the header, the table and the strips' own bytes.
+fn damaged_product() -> Vec<u8> {
+    let header = br#"{"width":2000,"height":1024,"strip":128,"key":"k"}"#;
+    const STRIP_LEN: usize = 8;
+    let mut bytes = Vec::from(b"LCDN".as_slice());
+    bytes.extend_from_slice(&[1, 0, 0, 0]);
+    bytes.extend_from_slice(&(header.len() as u32).to_le_bytes());
+    bytes.extend_from_slice(header);
+    let expected_len = 12 + header.len() + 8 * 8 + 8 * STRIP_LEN;
+    for _ in 0..8 {
+        // 8 claimed bytes whose recorded checksum does not match theirs (0xAA bytes do not have this CRC)
+        bytes.extend_from_slice(&(STRIP_LEN as u32).to_le_bytes());
+        bytes.extend_from_slice(&[0xAA, 0xBB, 0xCC, 0xDD]);
+    }
+    for _ in 0..8 {
+        bytes.extend_from_slice(&[0xAAu8; STRIP_LEN]);
+    }
+    assert_eq!(bytes.len(), expected_len, "the crafted file lies about its length");
+    bytes
+}
+
+#[test]
+fn a_damaged_product_is_rejected_before_its_output_is_allocated() {
+    let bytes = damaged_product();
+    let p = temp("damaged-product-heap");
+    std::fs::write(&p, &bytes).unwrap();
+    let _profiler = dhat::Profiler::builder().testing().build();
+    let why = read_window(&p, "k", None, 1, None).err().unwrap().to_string();
+    let peak = dhat::HeapStats::get().max_bytes;
+    let _ = std::fs::remove_file(p);
+    assert!(why.contains("damaged"), "{why}");
+    eprintln!("peak heap {peak} bytes");
+    assert!(peak < 4 << 20, "peak heap {peak} bytes: the output was reserved before the strips were checked");
+}
diff --git a/crates/denoise/src/reference.rs b/crates/denoise/src/reference.rs
index ef58b5b9c..488e9a7b7 100644
--- a/crates/denoise/src/reference.rs
+++ b/crates/denoise/src/reference.rs
@@ -4,6 +4,12 @@
 use crate::net::{Net, NetError, Op, TensorId};
 use crate::run::{Error, TileRunner};
 
+/// The tensors' size cap: the same one the real runner's buffers share (`crates/denoise/src/cpu.rs`). A hostile `Net`
+/// only ever has to satisfy the final shape: a `ConvT2` doubles the sides and a `MaxPool` halves them, so a small
+/// accepted graph can zoom its intermediates far out and back. Every tensor is counted here, and a run whose layers
+/// would retain more than one real tile's whole working set is refused before the memory behind it is reserved.
+const MAX_VALUES: usize = 128 * 1024 * 1024;
+
 /// A tensor in `[channels][side][side]` order.
 struct T {
     channels: usize,
@@ -11,12 +17,36 @@ struct T {
     data: Vec<f32>,
 }
 
+/// A tensor's plain float count, in bounds.
+fn count(channels: usize, side: usize) -> Result<usize, NetError> {
+    channels
+        .checked_mul(side)
+        .and_then(|n| n.checked_mul(side))
+        .filter(|&n| n > 0 && n <= MAX_VALUES)
+        .ok_or_else(|| NetError::Invalid("a tensor has no size or is too large".into()))
+}
+
+/// A zeroed tensor, keeping the memory the run keeps alive in bounds (`tensors` retains every layer's result).
+fn tensor(channels: usize, side: usize, total: &mut usize) -> Result<Vec<f32>, NetError> {
+    let n = count(channels, side)?;
+    *total = (*total).saturating_add(n);
+    if *total > MAX_VALUES {
+        return Err(NetError::Invalid("the tile needs too much working memory".into()));
+    }
+    let mut data = Vec::new();
+    data.try_reserve_exact(n).map_err(|_| NetError::Invalid("not enough memory for a reference tile".into()))?;
+    data.resize(n, 0.0);
+    Ok(data)
+}
+
 /// Run `net` on `input` (`in_channels` planes of `tile × tile`).
 pub fn run(net: &Net, tile: usize, input: &[f32]) -> Result<Vec<f32>, NetError> {
     if !net.fits_tile(tile) || input.len() != net.in_channels * tile * tile {
         return Err(NetError::Invalid("the tile does not fit the network".into()));
     }
-    let mut tensors: Vec<T> = vec![T { channels: net.in_channels, side: tile, data: input.to_vec() }];
+    let input = input.to_vec();
+    let mut total = input.len();
+    let mut tensors = vec![T { channels: net.in_channels, side: tile, data: input }];
     let get = |tensors: &[T], id: TensorId| -> Result<usize, NetError> {
         if id < tensors.len() { Ok(id) } else { Err(NetError::Invalid("a layer reads a tensor that does not exist yet".into())) }
     };
@@ -27,7 +57,7 @@ pub fn run(net: &Net, tile: usize, input: &[f32]) -> Result<Vec<f32>, NetError>
                 let b = c.src2.map(|s| get(&tensors, s)).transpose()?;
                 let side = tensors[a].side;
                 let pad = (c.k - 1) / 2;
-                let mut data = vec![0f32; c.cout * side * side];
+                let mut data = tensor(c.cout, side, &mut total)?;
                 // the input channels in order: the first source's, then the second's
                 let planes: Vec<&[f32]> =
                     std::iter::once(&tensors[a]).chain(b.map(|b| &tensors[b])).flat_map(|t| t.data.chunks(side * side)).collect();
@@ -56,7 +86,7 @@ pub fn run(net: &Net, tile: usize, input: &[f32]) -> Result<Vec<f32>, NetError>
                 let a = get(&tensors, c.src)?;
                 let side = tensors[a].side;
                 let out_side = 2 * side;
-                let mut data = vec![0f32; c.cout * out_side * out_side];
+                let mut data = tensor(c.cout, out_side, &mut total)?;
                 for co in 0..c.cout {
                     for y in 0..side {
                         for x in 0..side {
@@ -77,7 +107,7 @@ pub fn run(net: &Net, tile: usize, input: &[f32]) -> Result<Vec<f32>, NetError>
             Op::MaxPool2 { src } => {
                 let a = get(&tensors, *src)?;
                 let (channels, side) = (tensors[a].channels, tensors[a].side / 2);
-                let mut data = vec![0f32; channels * side * side];
+                let mut data = tensor(channels, side, &mut total)?;
                 for ch in 0..channels {
                     for y in 0..side {
                         for x in 0..side {
@@ -92,7 +122,7 @@ pub fn run(net: &Net, tile: usize, input: &[f32]) -> Result<Vec<f32>, NetError>
                 let a = get(&tensors, *src)?;
                 let (channels, side) = (tensors[a].channels / 4, tensors[a].side);
                 let out_side = 2 * side;
-                let mut data = vec![0f32; channels * out_side * out_side];
+                let mut data = tensor(channels, out_side, &mut total)?;
                 for ch in 0..channels {
                     for y in 0..side {
                         for x in 0..side {
@@ -131,3 +161,39 @@ impl TileRunner for ReferenceRunner {
         run(&self.net, self.tile, input).map_err(|e| Error::Runtime(e.to_string()))
     }
 }
+
+#[cfg(test)]
+mod tests {
+    use super::*;
+    use crate::net::ConvT2;
+
+    fn convt(src: TensorId, cin: usize, cout: usize) -> Op {
+        Op::ConvT2(ConvT2 { src, cin, cout, weight: vec![0.1; cin * cout * 4], bias: vec![0.0; cout], leaky: None })
+    }
+
+    /// A graph that fits the final-shape check while zooming its intermediates out and back: 256 `ConvT2`s double
+    /// the sides (256 tiers), 255 `MaxPool`s halve them back to the layer above the input.
+    fn hostile() -> Net {
+        let mut ops = Vec::new();
+        let mut last = 0usize;
+        for _ in 0..256 {
+            ops.push(convt(last, 1, 1));
+            last += 1;
+        }
+        for _ in 0..255 {
+            ops.push(Op::MaxPool2 { src: last });
+            last += 1;
+        }
+        Net::new(1, ops).unwrap()
+    }
+
+    /// The zoomed-out layers' memory was never reserved: either one tensor or the retained whole (the two bounds
+    /// share the cap) says why the run stops.
+    #[test]
+    fn a_graph_that_zooms_its_intermediates_out_and_back_is_refused_before_their_memory_is_reserved() {
+        assert!(matches!(
+            run(&hostile(), 1, &[1.0]),
+            Err(NetError::Invalid(why)) if why.contains("too large") || why.contains("too much working memory")
+        ));
+    }
+}
diff --git a/crates/engine/Cargo.toml b/crates/engine/Cargo.toml
index 9caa8cdb0..0b203f795 100644
--- a/crates/engine/Cargo.toml
+++ b/crates/engine/Cargo.toml
@@ -39,7 +39,7 @@ thiserror = { workspace = true }
 log = { workspace = true }
 ab_glyph = { workspace = true }
 # Apply the font’s vertical substitutions and origins to Japanese watermarks.
-harfrust = { version = "0.12", default-features = false, features = ["std"] }
+harfrust = { version = "0.13", default-features = false, features = ["std"] }
 unicode-segmentation = "1.13"
 lightcraft-segment = { workspace = true, optional = true }
 
diff --git a/crates/engine/src/camera_profiles.rs b/crates/engine/src/camera_profiles.rs
index c7b6c437b..9e6d2094e 100644
--- a/crates/engine/src/camera_profiles.rs
+++ b/crates/engine/src/camera_profiles.rs
@@ -28,6 +28,7 @@ pub const BUNDLED: &[(&str, &str)] = &[
     ("ILCA-99M2", include_str!("../../../assets/camera-profiles/ILCA-99M2.json")),
     ("ILCE-7CR", include_str!("../../../assets/camera-profiles/ILCE-7CR.json")),
     ("ILCE-7M4", include_str!("../../../assets/camera-profiles/ILCE-7M4.json")),
+    ("ILCE-7RM5", include_str!("../../../assets/camera-profiles/ILCE-7RM5.json")),
     ("NIKON D5300", include_str!("../../../assets/camera-profiles/NIKON_D5300.json")),
     ("NIKON Z 6_2", include_str!("../../../assets/camera-profiles/NIKON_Z_6_2.json")),
     ("NIKON Z 8", include_str!("../../../assets/camera-profiles/NIKON_Z_8.json")),
diff --git a/crates/heif/src/census.rs b/crates/heif/src/census.rs
new file mode 100644
index 000000000..6dbe035fc
--- /dev/null
+++ b/crates/heif/src/census.rs
@@ -0,0 +1,122 @@
+//! Caps on the container's metadata boxes, counted before heic-rs touches the file.
+//!
+//! heic-rs 0.1.4 (pinned `=0.1.4`) has no aggregate work budget inside its container parsing:
+//! every `ipma` association entry rescans the vector of already-seen item ids (quadratic in
+//! the number of entries), and an `iloc` extent using construction method 2 reconstructs its
+//! source item afresh for every extent that references it, with no shared cache. Legitimate
+//! phone-photo metadata never comes near these caps — real corpora keep both well under a few
+//! kilobytes — so anything above them is hostile or corrupt and is refused before the
+//! countable CPU work happens.
+//!
+//! [`depth_boxes`] stops silently at structural blips: heic-rs's own parser reports those
+//! better than this walk could, and an `ipma` box past the cap is caught wherever it parses.
+
+use heic_rs::boxes::BoxIter;
+
+use crate::Error;
+
+/// The largest `ipma` box (item ↔ property associations) payload accepted, 64 KiB. An entry
+/// costs at least 3 bytes, so this bounds heic-rs's per-entry rescan of earlier item ids to
+/// ~21 000 entries ≈ 220 million comparisons: long enough to be annoying, never minutes.
+const MAX_IPMA_BYTES: usize = 64 << 10;
+
+/// The largest `iloc` box (item locations) payload accepted, 64 KiB. An extent costs at least
+/// 12 bytes, so this bounds both the parse itself and how many extents a
+/// construction-method-2 reconstruction chain can visit.
+const MAX_ILOC_BYTES: usize = 64 << 10;
+
+/// Falls through unless the container declares more `ipma` or `iloc` payload than a
+/// legitimate phone photo ever does.
+pub fn cap(bytes: &[u8]) -> Result<(), Error> {
+    let mut c = Census::default();
+    depth_boxes(&mut c, BoxIter::new(bytes), 0);
+    if c.ipma > MAX_IPMA_BYTES {
+        return Err(Error::Limit(format!("the image carries {} bytes of property associations, over the {MAX_IPMA_BYTES}-byte cap", c.ipma)));
+    }
+    if c.iloc > MAX_ILOC_BYTES {
+        return Err(Error::Limit(format!("the image carries {} bytes of item locations, over the {MAX_ILOC_BYTES}-byte cap", c.iloc)));
+    }
+    Ok(())
+}
+
+/// The metadata-box payload sizes seen so far.
+#[derive(Default)]
+struct Census {
+    ipma: usize,
+    iloc: usize,
+}
+
+/// Walks boxes, adding the payload sizes of those named in [`Census`].
+///
+/// Only `meta` and `iprp` (the two nesting boxes the metadata is built from) are descended
+/// into, no deeper than that depth, so a nested-box trick can't hide a box from the count.
+fn depth_boxes(c: &mut Census, boxes: BoxIter<'_>, depth: u32) {
+    if depth > 3 {
+        return;
+    }
+    for b in boxes {
+        // A structural error stops the walk; `heic_rs::probe` reports it properly afterwards.
+        let Ok(b) = b else { return };
+        if b.is(b"ipma") {
+            c.ipma = c.ipma.saturating_add(b.payload.len());
+        } else if b.is(b"iloc") {
+            c.iloc = c.iloc.saturating_add(b.payload.len());
+        } else if b.is(b"meta") {
+            // `meta` is a FullBox: version and flags sit between its header and its children.
+            if b.payload.len() >= 4 {
+                depth_boxes(c, BoxIter::new(&b.payload[4..]), depth + 1);
+            }
+        } else if b.is(b"iprp") {
+            depth_boxes(c, b.children(), depth + 1);
+        }
+    }
+}
+
+#[cfg(test)]
+mod tests {
+    use super::*;
+
+    /// Assembles ftyp + meta(version/flags + iprp(ipco, ipma)) by hand; only the structure
+    /// the census walks matters, no item is ever defined.
+    fn file_with(ipma_payload: &[u8]) -> Vec<u8> {
+        let mut out = b"\0\0\0\x18ftypheic\0\0\0\0mif1heic".to_vec();
+        let mut iprp = Vec::new();
+        iprp.extend(box_of(b"ipco", b""));
+        iprp.extend(box_of(b"ipma", ipma_payload));
+        let mut meta = vec![0u8, 0, 0, 0]; // version 0, flags 0
+        meta.extend(box_of(b"iprp", &iprp));
+        out.extend(box_of(b"meta", &meta));
+        out
+    }
+
+    fn box_of(kind: &[u8; 4], body: &[u8]) -> Vec<u8> {
+        let mut out = Vec::with_capacity(8 + body.len());
+        let size = u32::try_from(8 + body.len()).expect("test box fits in u32");
+        out.extend_from_slice(&size.to_be_bytes());
+        out.extend_from_slice(kind);
+        out.extend_from_slice(body);
+        out
+    }
+
+    #[test]
+    fn an_oversized_ipma_is_refused() {
+        // 40 000 entries of 6 bytes: 240 KiB of ipma, far over the cap, and quadratic if
+        // parsed (each entry rescans the earlier item ids in heic-rs 0.1.4).
+        let mut ipma = Vec::new();
+        for _ in 0..40_000u32 {
+            ipma.extend_from_slice(&[0u8, 0, 0, 0, 0, 0]);
+        }
+        let bytes = file_with(&ipma);
+        let r = crate::probe(&bytes).map(|_| ());
+        assert!(matches!(r, Err(Error::Limit(ref m)) if m.contains("associations")), "{r:?}");
+    }
+
+    #[test]
+    fn a_undersized_ipma_is_untouched_by_the_caps() {
+        // The same shape with a normal ipma (two entries): the caps pass, and whatever error
+        // follows must not come from them.
+        let bytes = file_with(&[0, 0, 4, 1, 1, 2, 0, 0]);
+        let r = crate::probe(&bytes);
+        assert!(!matches!(r, Err(Error::Limit(ref m)) if m.contains("cap")), "{r:?}");
+    }
+}
diff --git a/crates/heif/src/lib.rs b/crates/heif/src/lib.rs
index 21b9cf647..5b20e31d7 100644
--- a/crates/heif/src/lib.rs
+++ b/crates/heif/src/lib.rs
@@ -19,6 +19,7 @@
 #![forbid(unsafe_code)]
 #![deny(clippy::unwrap_used, clippy::expect_used, clippy::panic, clippy::unimplemented, clippy::todo, clippy::unreachable)]
 
+mod census;
 mod orient;
 /// Lossless synthetic HEIF files for tests, here and in the crates above (feature `testdata`).
 #[cfg(any(test, feature = "testdata"))]
@@ -149,20 +150,50 @@ pub fn probe(bytes: &[u8]) -> Result<Info, Error> {
 }
 
 fn probe_unguarded(bytes: &[u8]) -> Result<Info, Error> {
-    let info = heic_rs::probe(bytes).map_err(|e| match e {
-        // No `meta` box: no still image, only a `moov` image sequence (a video track).
+    census::cap(bytes)?;
+    // No `meta` box: no still image, only a `moov` image sequence (a video track).
+    let open_error = |e| match e {
         heic_rs::Error::MissingBox("meta") => Error::Unsupported(SEQUENCE),
         e => err(e),
-    })?;
-    let ctx = Context::open(bytes).map_err(err)?;
+    };
+    let ctx = Context::open(bytes).map_err(open_error)?;
     let id = ctx.meta.primary;
-    let coded = match ctx.grid(id).map_err(err)? {
+    // heic-rs 0.1.4 caps the size of what it assembles, not the work: an item built from other
+    // items (`iloc` construction method 2) is rebuilt once per extent, so a chain of such items
+    // multiplies at every level while each result stays small. Count those visits from the
+    // `iloc` table before reconstructing anything: the primary item first (`heic_rs::probe` and
+    // `Context::grid` both rebuild its descriptor), then its alpha plane, then every tile
+    // reference, repeats included.
+    let mut visits = 0_usize;
+    item_visits(&ctx, id, 0, &mut visits)?;
+    let info = heic_rs::probe(bytes).map_err(open_error)?;
+    if let Some(alpha) = ctx.alpha_item(id).map_err(err)? {
+        item_visits(&ctx, alpha, 0, &mut visits)?;
+    }
+    let mut coded = match ctx.grid(id).map_err(err)? {
         Some((_, tiles)) => tiles,
         None => vec![id],
     };
+    for &item in coded.iter().filter(|&&item| item != id) {
+        item_visits(&ctx, item, 0, &mut visits)?;
+    }
+    // A `dimg` listing may name the same tile more than once, and reconstructable items are
+    // moreover rebuilt for every extent that references them in heic-rs 0.1.4. For the size
+    // check each unique item counts once: the total reconstruction (all of it assembled from
+    // `bytes` by heic-rs) is held below one copy of the file, above which a repeat or chain
+    // wants more bytes than exist. Order doesn't matter here: this only checks that every
+    // tile's bytes lie in the file.
+    coded.sort_unstable();
+    coded.dedup();
+    let mut reconstructed = 0_usize;
     for item in coded {
-        // Borrowed from `bytes` unless split across extents: cheap.
-        ctx.item_data(item).map_err(err)?;
+        reconstructed = reconstructed.saturating_add(ctx.item_data(item).map_err(err)?.len());
+        if reconstructed > bytes.len() {
+            return Err(Error::Limit(format!(
+                "the container holds {reconstructed} bytes of item data, over the {} bytes of the file itself",
+                bytes.len()
+            )));
+        }
     }
     Ok(Info {
         width: info.width,
@@ -174,6 +205,36 @@ fn probe_unguarded(bytes: &[u8]) -> Result<Info, Error> {
     })
 }
 
+/// Most extent visits heic-rs may spend reconstructing the primary image's coded items; real
+/// files need one per tile (plus a few for the rare derived item).
+const MAX_ITEM_VISITS: usize = 4096;
+/// Deepest chain of items built from items we follow (heic-rs refuses beyond eight itself).
+const MAX_ITEM_CHAIN: u32 = 8;
+
+/// Adds to `visits` the extents heic-rs would read to reconstruct `id`, following items built
+/// from other items, and fails once that passes [`MAX_ITEM_VISITS`] or the chain is too deep.
+fn item_visits(ctx: &Context<'_>, id: u32, depth: u32, visits: &mut usize) -> Result<(), Error> {
+    use heic_rs::meta::iloc::Construction;
+    if depth > MAX_ITEM_CHAIN {
+        return Err(Error::Limit(format!("items built from items nest deeper than {MAX_ITEM_CHAIN} levels")));
+    }
+    let Some(loc) = ctx.meta.location(id) else { return Ok(()) };
+    *visits = visits.saturating_add(loc.extents.len().max(1));
+    if *visits > MAX_ITEM_VISITS {
+        return Err(Error::Limit(format!("reconstructing the image takes over {MAX_ITEM_VISITS} item extent reads")));
+    }
+    if loc.construction == Construction::Item {
+        for e in &loc.extents {
+            if let Ok(source) = u32::try_from(e.index)
+                && source != id
+            {
+                item_visits(ctx, source, depth + 1, visits)?;
+            }
+        }
+    }
+    Ok(())
+}
+
 /// Decodes the primary image, with its metadata.
 pub fn decode(bytes: &[u8], options: &Options) -> Result<Decoded, Error> {
     guarded(|| decode_unguarded(bytes, options))
@@ -188,7 +249,13 @@ pub fn decode_thumbnail(bytes: &[u8], min_edge: u32, options: &Options) -> Resul
         let ctx = Context::open(bytes).map_err(err)?;
         let primary = ctx.meta.primary;
         let mut best: Option<(u32, u32)> = None;
+        // A thumbnail whose own reconstruction would cost too much is not a candidate; the visits
+        // of all the candidates share one budget.
+        let mut candidate_visits = 0_usize;
         for r in ctx.meta.refs.iter().filter(|r| r.kind == heic_rs::meta::iref::RefKind::Thmb && r.to.contains(&primary)) {
+            if item_visits(&ctx, r.from, 0, &mut candidate_visits).is_err() {
+                continue;
+            }
             let Ok(p) = ctx.props(r.from) else { continue };
             let Ok((w, h)) = ctx.coded_size(r.from, &p) else { continue };
             let edge = w.max(h);
@@ -197,6 +264,15 @@ pub fn decode_thumbnail(bytes: &[u8], min_edge: u32, options: &Options) -> Resul
             }
         }
         let Some((id, _)) = best else { return Ok(None) };
+        // The same pre-scan as `probe`: the thumbnail's own descriptor and every tile reference
+        // are counted before heic-rs rebuilds any of them.
+        let mut visits = 0_usize;
+        item_visits(&ctx, id, 0, &mut visits)?;
+        if let Some((_, tiles)) = ctx.grid(id).map_err(err)? {
+            for &tile in &tiles {
+                item_visits(&ctx, tile, 0, &mut visits)?;
+            }
+        }
         let mut decoded = decode_item(&ctx, id, options, false)?;
         if decoded.icc.is_none() {
             decoded.icc = item_icc(&ctx, primary);
@@ -232,6 +308,13 @@ fn decode_unguarded(bytes: &[u8], options: &Options) -> Result<Decoded, Error> {
 /// `with_alpha` and the item has an alpha auxiliary image.
 fn decode_item(ctx: &Context<'_>, id: u32, options: &Options, with_alpha: bool) -> Result<Decoded, Error> {
     let p = ctx.props(id).map_err(err)?;
+    // heic-rs 0.1.4 keeps every associated transform and its [`orient::apply`] allocates the
+    // full picture again for each: a file could chain the repetition and multiply decode CPU
+    // without changing any checked size. Real files carry at most one `clap`, `irot` and
+    // `imir`, so refuse anything approaching [`MAX_TRANSFORMS`] (CodeRabbit #44).
+    if p.transforms.len() > MAX_TRANSFORMS {
+        return Err(Error::Limit(format!("the image carries {} transform properties, over the {MAX_TRANSFORMS}-property cap", p.transforms.len())));
+    }
     let limit = options.max_pixels;
     // The declared sizes are refused before anything is decoded or allocated.
     let (cw, ch) = ctx.coded_size(id, &p).map_err(err)?;
@@ -245,6 +328,14 @@ fn decode_item(ctx: &Context<'_>, id: u32, options: &Options, with_alpha: bool)
     let signal = ycc::Signal { matrix: colour.matrix, full_range: colour.full_range };
     let alpha_id = if with_alpha { ctx.alpha_item(id).map_err(err)? } else { None };
     let (w, h) = planes.size();
+    // A grid's canvas dimensions come from its payload, not the checked `ispe` (CodeRabbit
+    // #48): check the real one, before [`ycc::to_rgb16`] allocates for it.
+    match (u32::try_from(w), u32::try_from(h)) {
+        (Ok(wu), Ok(hu)) => {
+            heic_rs::image::check_pixels(wu, hu, limit).map_err(err)?;
+        }
+        _ => return Err(Error::Limit(format!("the image canvas is {w}x{h}, beyond the {limit}-pixel limit"))),
+    }
     let mode = if options.apply_transforms && orient::odd_crop(w, h, &p.transforms)? { ycc::Upsampling::Bilinear } else { ycc::Upsampling::Nearest };
     let mut data = ycc::to_rgb16(&planes, signal, alpha_id.is_some(), mode)
         .ok_or_else(|| Error::Malformed("the decoded pictures don't cover the image".into()))?;
@@ -281,6 +372,10 @@ fn decode_item(ctx: &Context<'_>, id: u32, options: &Options, with_alpha: bool)
 /// cover its canvas rounded up to whole tiles, so legitimate grids sit near 1.
 const GRID_BUDGET: u64 = 2;
 
+/// The most transform properties (`clap`/`irot`/`imir`) one item may carry. Real files have at
+/// most one of each, so anything approaching this is a reordered or hostile association list.
+const MAX_TRANSFORMS: usize = 12;
+
 /// The decoded pictures of an item: one, or a grid's tiles in `dimg` order.
 struct Coded<'a> {
     frames: Vec<Frame>,
@@ -370,8 +465,12 @@ fn colour(p: &ItemProps<'_>, coded: &ItemProps<'_>) -> Colour {
 /// metadata item never fails a decode whose pixels came out fine.
 fn metadata(ctx: &Context<'_>) -> (Option<Vec<u8>>, Option<String>) {
     let id = ctx.meta.primary;
-    let exif = ctx.exif(id).ok().flatten().map(<[u8]>::to_vec);
-    let xmp = ctx.xmp_item(id).and_then(|x| ctx.item_data(x).ok()).and_then(|d| match d {
+    // Metadata is best effort, so an item that would cost too much to rebuild is skipped, not an error.
+    let mut visits = 0_usize;
+    let cheap = |item: Option<u32>, visits: &mut usize| item.is_none_or(|item| item_visits(ctx, item, 0, visits).is_ok());
+    let exif = if cheap(ctx.exif_item(id), &mut visits) { ctx.exif(id).ok().flatten().map(<[u8]>::to_vec) } else { None };
+    let xmp_item = ctx.xmp_item(id).filter(|&x| cheap(Some(x), &mut visits));
+    let xmp = xmp_item.and_then(|x| ctx.item_data(x).ok()).and_then(|d| match d {
         Cow::Borrowed(b) => String::from_utf8(b.to_vec()).ok(),
         Cow::Owned(b) => String::from_utf8(b).ok(),
     });
diff --git a/crates/heif/src/tests_synthetic.rs b/crates/heif/src/tests_synthetic.rs
index 3259dc96d..1286ff82a 100644
--- a/crates/heif/src/tests_synthetic.rs
+++ b/crates/heif/src/tests_synthetic.rs
@@ -185,3 +185,16 @@ fn truncated_and_corrupted_files_are_errors_not_panics() {
         let _ = decode_thumbnail(&b, 1, &Options::default());
     }
 }
+
+/// CodeRabbit #44: heic-rs keeps every associated transform and each one re-allocates the
+/// whole picture, so 13 of them are over the [`crate::MAX_TRANSFORMS`] cap and refused.
+#[test]
+fn too_many_transform_properties_are_refused() {
+    let bytes = build(&Spec { props: std::iter::repeat_n(Prop::Irot(0), 13).collect(), ..Spec::new(32, 32, &grey) });
+    let r = decode(&bytes, &Options::default());
+    assert!(matches!(r, Err(Error::Limit(ref m)) if m.contains("transform")), "{r:?}");
+    // At the cap they're not: 12 identity rotations decode normally.
+    let bytes = build(&Spec { props: std::iter::repeat_n(Prop::Irot(0), 12).collect(), ..Spec::new(32, 32, &grey) });
+    let d = decode(&bytes, &Options::default()).unwrap();
+    assert_eq!((d.width, d.height), (32, 32));
+}
diff --git a/crates/heif/src/ycc.rs b/crates/heif/src/ycc.rs
index a0429b453..384d25f2a 100644
--- a/crates/heif/src/ycc.rs
+++ b/crates/heif/src/ycc.rs
@@ -161,6 +161,13 @@ pub fn to_rgb16(planes: &Planes<'_>, signal: Signal, alpha: bool, mode: Upsampli
     if !(8..=16).contains(&bd) || w == 0 || h == 0 {
         return None;
     }
+    // The default caller limit is 2²8 pixels, at most four channels per pixel, so the largest
+    // legitimate `w·h·ch` is 2²30 samples. Anything more is a malformed or hostile canvas the
+    // decode path would have refused before calling here (CodeRabbit #48): refuse rather than
+    // ask for a multi-gigabuffer (or worse, over usize).
+    if w.checked_mul(h)?.checked_mul(ch)? > 1 << 30 {
+        return None;
+    }
     let max = ((1u32 << bd) - 1) as f32;
     let half = (1u32 << (bd - 1)) as f32;
     let scale = (1u32 << (bd - 8)) as f32;
@@ -323,4 +330,23 @@ mod tests {
             .is_none()
         );
     }
+
+    /// CodeRabbit #48: a plane claiming 500 000 × 500 000 pixels must be refused without ever
+    /// allocating for it (before the cap this vec was never built; upper-bounding allocation
+    /// would have been a 7.5-gibabuffer or a panic instead of an error).
+    #[test]
+    fn an_oversized_canvas_is_refused_without_allocation() {
+        let f = Frame {
+            width: 500_000,
+            height: 500_000,
+            bit_depth: 8,
+            chroma: ChromaFormat::Yuv420,
+            y: vec![128],
+            cb: vec![128; 4],
+            cr: vec![128; 4],
+            y_stride: 0,
+            c_stride: 0,
+        };
+        assert!(to_rgb16(&Planes::Picture(&f), Signal { matrix: 6, full_range: true }, false, Upsampling::Nearest).is_none());
+    }
 }
diff --git a/crates/merge/src/lib.rs b/crates/merge/src/lib.rs
index b5ccd4bb8..ca7f91821 100644
--- a/crates/merge/src/lib.rs
+++ b/crates/merge/src/lib.rs
@@ -34,6 +34,8 @@ pub use pano::{PanoOptions, PanoResult, Projection, stitch};
 pub enum MergeError {
     #[error("{0} photo(s) selected; at least {1} are needed")]
     TooFew(usize, usize),
+    #[error("{0} photo(s) selected; a stitch of more than {1} is refused: matching every pair would take far too long")]
+    TooMany(usize, usize),
     #[error("{0}")]
     Mismatch(String),
     #[error("could not read a photo: {0}")]
diff --git a/crates/merge/src/pano/camera.rs b/crates/merge/src/pano/camera.rs
index 7625170c3..4589f88db 100644
--- a/crates/merge/src/pano/camera.rs
+++ b/crates/merge/src/pano/camera.rs
@@ -61,10 +61,12 @@ pub struct PairMatch {
 /// Match every pair of images. `feats[k]` are in work coordinates scaled by `scales[k]`.
 pub fn match_pairs(feats: &[Features], scales: &[f64]) -> Vec<PairMatch> {
     let n = feats.len();
-    let pairs: Vec<(usize, usize)> = (0..n).flat_map(|i| (i + 1..n).map(move |j| (i, j))).collect();
-    let mut out: Vec<PairMatch> = pairs
-        .par_iter()
-        .filter_map(|&(i, j)| {
+    // the pairs are generated lazily: materialising all n(n−1)/2 up front is quadratic memory, including
+    // when every comparison comes up empty (no usable features)
+    let mut out: Vec<PairMatch> = (0..n)
+        .into_par_iter()
+        .flat_map_iter(|i| ((i + 1)..n).map(move |j| (i, j)))
+        .filter_map(|(i, j)| {
             let m = features::match_features(&feats[i], &feats[j], 0.8);
             if m.len() < 12 {
                 return None;
diff --git a/crates/merge/src/pano/mod.rs b/crates/merge/src/pano/mod.rs
index 5ce439681..ba7e1c63f 100644
--- a/crates/merge/src/pano/mod.rs
+++ b/crates/merge/src/pano/mod.rs
@@ -53,6 +53,11 @@ impl Default for PanoOptions {
 /// The largest panorama, in megapixels (Lightroom's limit too); a bigger one is scaled down.
 pub const MAX_MEGAPIXELS: f64 = 512.0;
 
+/// Most frames one stitch accepts: pair matching compares every pair of frames (n(n−1)/2 runs), so an
+/// unbounded frame count is quadratic CPU as well as quadratic memory while the frames load. A panorama
+/// with more than [`MAX_FRAMES`] shots is refused with an error, not attempted.
+pub const MAX_FRAMES: usize = 256;
+
 /// The longest edge of a panorama, in pixels (Lightroom's limit too); a longer one is scaled down.
 pub const MAX_EDGE: f64 = 65_000.0;
 
@@ -224,6 +229,9 @@ pub fn stitch(mut frames: Vec<Frame>, opts: &PanoOptions, progress: &Progress) -
     if n < 2 {
         return Err(MergeError::TooFew(n, 2));
     }
+    if n > MAX_FRAMES {
+        return Err(MergeError::TooMany(n, MAX_FRAMES));
+    }
     check(progress, 0.01, "Finding features")?;
     let (cams, rms_before, rms) = register(&frames, progress)?;
     let used: Vec<usize> = (0..n).filter(|&i| cams[i].is_some()).collect();
diff --git a/crates/merge/tests/it/pano.rs b/crates/merge/tests/it/pano.rs
index fdb736524..aeecde64c 100644
--- a/crates/merge/tests/it/pano.rs
+++ b/crates/merge/tests/it/pano.rs
@@ -246,6 +246,18 @@ fn unrelated_photos_do_not_stitch() {
     assert!(stitch(frames, &PanoOptions::default(), &no_progress).is_err());
 }
 
+/// Pair matching compares every pair of frames before anything is known about them: an unbounded
+/// photo count is quadratic CPU and memory (issue #1519). More than `MAX_FRAMES` is refused at once,
+/// before any frame is worked on.
+#[test]
+fn a_stitch_of_more_than_the_frame_cap_is_refused_up_front() {
+    let frames: Vec<Frame> = (0..lightcraft_merge::pano::MAX_FRAMES + 1)
+        .map(|i| Frame::from_linear_rec2020(Rgb32f::from_fn(8, 8, |_, _| [(i % 255) as f32 / 255.0, 0.0, 0.0]), None))
+        .collect();
+    let err = stitch(frames, &PanoOptions::default(), &no_progress).unwrap_err();
+    assert!(err.to_string().contains("refused"), "the frame cap errors, it does not begin the quadratic match: {err}");
+}
+
 /// Issue #1455: a panorama came out at 40 MP whatever its photos' resolution. It now keeps their
 /// own resolution unless a size is asked for (up to Lightroom's 512 MP); a size scales it down,
 /// and a NaN one (from an agent) is no size at all, not a 0.1 MP thumbnail.
diff --git a/crates/meta/src/exif.rs b/crates/meta/src/exif.rs
index f24bb5f2f..adcba0f80 100644
--- a/crates/meta/src/exif.rs
+++ b/crates/meta/src/exif.rs
@@ -1,7 +1,7 @@
 //! Exif / TIFF tags → [`Metadata`] (CIPA DC-008 Exif 2.32, TIFF 6.0, DNG 1.7 tag semantics).
 
 use crate::{DateTime, Flash, Gps, Metadata, Orientation};
-use lightcraft_tiff::{Ifd, Tiff, TiffError, tags as t};
+use lightcraft_tiff::{Ifd, ParseOptions, Tiff, TiffError, tags as t};
 
 /// Strip an `Exif\0\0` (or `Exif\0\xff`) prefix as found in JPEG APP1 and some WebP `EXIF` chunks.
 pub fn strip_exif_header(b: &[u8]) -> &[u8] {
@@ -16,8 +16,16 @@ pub fn read_exif(bytes: &[u8]) -> Metadata {
 
 /// Like [`read_exif`] but reports a structurally invalid TIFF header / IFD0.
 pub fn try_read_exif(bytes: &[u8]) -> Result<Metadata, TiffError> {
+    try_read_exif_with(bytes, &ParseOptions::default())
+}
+
+/// [`try_read_exif`] with the caller's parser options (its value allocation budget in particular).
+/// A decoder working from a sparse buffer — only selected ranges of the logical file are actually
+/// loaded, the rest is zeros — must not size its allocations by the logical file length, which
+/// unrelated bytes of the file can inflate at no cost to the attacker.
+pub fn try_read_exif_with(bytes: &[u8], opts: &ParseOptions) -> Result<Metadata, TiffError> {
     let data = strip_exif_header(bytes);
-    let tiff = Tiff::parse(data)?;
+    let tiff = Tiff::parse_with(data, opts)?;
     let mut m = from_tiff(&tiff);
     // Panasonic writes no LensModel, only the name in its maker note (and in a RW2 that note is not in the raw's own Exif)
     if m.lens_model.is_none() {
diff --git a/crates/meta/src/focus_read.rs b/crates/meta/src/focus_read.rs
index 5a5d349d1..65adbee75 100644
--- a/crates/meta/src/focus_read.rs
+++ b/crates/meta/src/focus_read.rs
@@ -171,7 +171,15 @@ fn tiff(r: &mut Reader, head: Vec<u8>) -> io::Result<Option<FocusPoint>> {
     loaded.insert(0, head.len() as u64);
     for _ in 0..MAX_ROUNDS {
         match plan(&buf, &loaded) {
-            Step::Ready => return Ok(crate::try_read_exif(&buf).ok().and_then(|m| m.focus)),
+            Step::Ready => {
+                // The decoder's allocation budget follows the bytes actually fetched, not the logical
+                // file length: only the loaded ranges are data, and an unrelated entry that claims a
+                // huge value must be cut by what leaving it cost, not by what the buffer claims to hold.
+                // The same 8 × / + 1 MiB shape the general TIFF reader uses, over `reader.bytes` instead.
+                let opts =
+                    lightcraft_tiff::ParseOptions { value_budget: Some(r.bytes.saturating_mul(8).saturating_add(1 << 20)), ..Default::default() };
+                return Ok(crate::try_read_exif_with(&buf, &opts).ok().and_then(|m| m.focus));
+            }
             Step::Nothing => return Ok(None),
             Step::Need(ranges) => {
                 for (a, b) in ranges {
diff --git a/crates/meta/src/lib.rs b/crates/meta/src/lib.rs
index baebbfe0f..46c7a1043 100644
--- a/crates/meta/src/lib.rs
+++ b/crates/meta/src/lib.rs
@@ -27,7 +27,7 @@ mod xmp_merge;
 
 pub use container::{Embedded, embedded, jpeg_segments, png_chunks, webp_chunks};
 pub use datetime::DateTime;
-pub use exif::{from_tiff, read_exif, strip_exif_header, try_read_exif, write_exif};
+pub use exif::{from_tiff, read_exif, strip_exif_header, try_read_exif, try_read_exif_with, write_exif};
 pub use focus::FocusPoint;
 pub use gpx::{GpxError, Match, TrackPoint, Tracklog, parse_gpx};
 pub use iptc::parse_iptc;
diff --git a/crates/meta/src/xmp.rs b/crates/meta/src/xmp.rs
index 2dbf59482..ac0a8808a 100644
--- a/crates/meta/src/xmp.rs
+++ b/crates/meta/src/xmp.rs
@@ -154,6 +154,11 @@ const MAX_NODES: usize = 200_000;
 // Expanding a long namespace URI on many short names must not amplify a small packet without bound.
 pub(crate) const MAX_OPAQUE_NAME_BYTES: usize = 8 * 1024 * 1024;
 
+/// Most text a converter's flattened property keys may add up to. Keys repeat their whole ancestor
+/// path (`parent/field`), so a document with a long nested name and a wide child fan-out otherwise
+/// retains its prefix once per property: node limits alone cannot bound that duplication.
+const MAX_KEY_BYTES: usize = 1 << 20;
+
 /// Names canonicalised by namespace URI (see [`NAMESPACES`]); conflicting foreign prefixes are opaque.
 pub(crate) fn canonical_name(qname: &str, scopes: &[Vec<(String, String)>], opaque_budget: &mut usize) -> Result<String, XmpError> {
     canonical(qname, scopes, opaque_budget)
@@ -332,18 +337,29 @@ fn is_rdf_meta_attr(k: &str) -> bool {
     matches!(k, "rdf:about" | "rdf:ID" | "rdf:nodeID" | "xml:lang" | "rdf:parseType" | "rdf:resource" | "rdf:datatype") || k.starts_with("xmlns")
 }
 
-fn collect_description(d: &Node, prefix: &str, props: &mut BTreeMap<String, Vec<String>>) {
+fn collect_description(d: &Node, prefix: &str, props: &mut BTreeMap<String, Vec<String>>, budget: &mut usize) {
     for (k, v) in &d.attrs {
-        if !is_rdf_meta_attr(k) {
+        if !is_rdf_meta_attr(k) && take_key_bytes(&format!("{prefix}{k}"), budget) {
             props.entry(format!("{prefix}{k}")).or_default().push(v.clone());
         }
     }
     for c in &d.children {
-        collect_property(c, prefix, props);
+        collect_property(c, prefix, props, budget);
     }
 }
 
-fn collect_property(p: &Node, prefix: &str, props: &mut BTreeMap<String, Vec<String>>) {
+/// Charge one flattened key's length to the key budget; `false` when the budget is spent (the
+/// property is then left out, like other elements a limit has cut).
+fn take_key_bytes(key: &str, budget: &mut usize) -> bool {
+    let n = key.len();
+    if *budget < n {
+        return false;
+    }
+    *budget -= n;
+    true
+}
+
+fn collect_property(p: &Node, prefix: &str, props: &mut BTreeMap<String, Vec<String>>, budget: &mut usize) {
     let key = format!("{prefix}{}", p.name);
     if let Some(arr) = p.children.iter().find(|c| matches!(c.name.as_str(), "rdf:Seq" | "rdf:Bag" | "rdf:Alt")) {
         let mut items: Vec<(bool, String)> = arr
@@ -357,29 +373,36 @@ fn collect_property(p: &Node, prefix: &str, props: &mut BTreeMap<String, Vec<Str
         if arr.name == "rdf:Alt" {
             items.sort_by_key(|(default, _)| !*default);
         }
-        props.entry(key).or_default().extend(items.into_iter().map(|(_, v)| v));
+        if take_key_bytes(&key, budget) {
+            props.entry(key).or_default().extend(items.into_iter().map(|(_, v)| v));
+        }
         return;
     }
     let struct_prefix = format!("{key}/");
     if p.attr("rdf:parseType") == Some("Resource") {
         for c in &p.children {
-            collect_property(c, &struct_prefix, props);
+            collect_property(c, &struct_prefix, props, budget);
         }
         return;
     }
     if let Some(d) = p.children.iter().find(|c| c.name == "rdf:Description") {
-        collect_description(d, &struct_prefix, props);
+        collect_description(d, &struct_prefix, props, budget);
         return;
     }
     let field_attrs: Vec<&(String, String)> = p.attrs.iter().filter(|(k, _)| !is_rdf_meta_attr(k)).collect();
     if !field_attrs.is_empty() && p.children.is_empty() && p.text.trim().is_empty() {
         for (k, v) in field_attrs {
-            props.entry(format!("{struct_prefix}{k}")).or_default().push(v.clone());
+            let full = format!("{struct_prefix}{k}");
+            if take_key_bytes(&full, budget) {
+                props.entry(full).or_default().push(v.clone());
+            }
         }
         return;
     }
     let v = p.attr("rdf:resource").map(str::to_string).unwrap_or_else(|| p.text.trim().to_string());
-    props.entry(key).or_default().push(v);
+    if take_key_bytes(&key, budget) {
+        props.entry(key).or_default().push(v);
+    }
 }
 
 fn find_descriptions<'a>(n: &'a Node, out: &mut Vec<&'a Node>) {
@@ -497,8 +520,10 @@ pub fn parse_xmp(s: &str) -> Result<XmpData, XmpError> {
     find_descriptions(&tree, &mut descs);
     let mut props = BTreeMap::new();
     let mut values = BTreeMap::new();
+    // One budget for the whole document: several descriptions cannot each spend a fresh one.
+    let mut key_budget = MAX_KEY_BYTES;
     for d in descs {
-        collect_description(d, "", &mut props);
+        collect_description(d, "", &mut props, &mut key_budget);
         if let XmpValue::Struct(m) = node_struct(d) {
             values.extend(m);
         }
@@ -1171,4 +1196,32 @@ mod tests {
         assert_eq!(entity("#x41"), Some('A'));
         assert_eq!(entity("#9"), Some('\t'));
     }
+
+    /// Flattened keys repeat their whole ancestor path, so a long nested name with a wide child
+    /// fan-out would otherwise retain its prefix once per leaf: the cumulative key budget stops it
+    /// (a 65 KB document with 3000 leaves must not retain ~2.4 MB of key text).
+    #[test]
+    fn flattened_keys_stay_within_the_cumulative_budget() {
+        let level = "n".repeat(200);
+        let mut doc = String::from(
+            "<x:xmpmeta xmlns:x=\"adobe:ns:meta/\" xmlns:rdf=\"http://www.w3.org/1999/02/22-rdf-syntax-ns#\" xmlns:lc=\"https://lightcraft.example/lc/\"><rdf:RDF><rdf:Description><lc:root rdf:parseType=\"Resource\">",
+        );
+        for _ in 0..4 {
+            doc.push_str(&format!("<lc:{level} rdf:parseType=\"Resource\">"));
+        }
+        // each leaf has a name of its own, so each one adds a key
+        for i in 0..3000 {
+            doc.push_str(&format!("<lc:leaf{i} lc:att=\"v\"/>"));
+        }
+        doc.push_str("</lc:root>");
+        for _ in 0..4 {
+            doc.push_str(&format!("</lc:{level}>"));
+        }
+        doc.push_str("</rdf:Description></rdf:RDF></x:xmpmeta>");
+        let d = parse_xmp(&doc).unwrap();
+        let total: usize = d.properties.keys().map(String::len).sum();
+        assert!(total <= MAX_KEY_BYTES, "flattened-key text {total} is over the {MAX_KEY_BYTES} budget");
+        assert!(d.properties.len() < 3000, "keys stop being added once the budget is spent");
+        assert!(!d.properties.is_empty(), "properties parsed before the budget are kept");
+    }
 }
diff --git a/crates/raw/src/dngwrite.rs b/crates/raw/src/dngwrite.rs
index d7ba42776..fae6015b6 100644
--- a/crates/raw/src/dngwrite.rs
+++ b/crates/raw/src/dngwrite.rs
@@ -94,6 +94,17 @@ pub const SOFTWARE: &str = "LightCraft DNG 2";
 /// (3.9 s vs 0.55 s on 4 cores) to save 3 % of the file (266 vs 275 MB); 5–12 % on raw and rendered DNGs.
 const DEFLATE_LEVEL: u8 = 1;
 
+/// Largest Deflate tile edge the writer pads to (`tile` is caller-supplied in [`DngCompression::Deflate`]):
+/// square-tile buffers grow with the square, so an unclamped edge lets a request pad a tiny valid image into
+/// a multi-gigabyte buffer and billions of edge-replicate iterations. 2048² samples (≤ 24 MB of f32) is far
+/// above the 256 default and every real tile this writer makes.
+const MAX_DEFLATE_TILE: u32 = 2048;
+
+/// `tile` aligned down to a multiple of 16 and clamped to [`MAX_DEFLATE_TILE`].
+fn deflate_tile(tile: u32) -> usize {
+    (tile.max(16) & !15).min(MAX_DEFLATE_TILE) as usize
+}
+
 /// IEEE 754 binary32 → binary16 (round to nearest even; overflow → ±inf, NaN kept).
 pub fn f32_to_f16(v: f32) -> u16 {
     let b = v.to_bits();
@@ -318,7 +329,7 @@ pub fn write_dng(raw: &RawImage, opts: &DngWriteOptions) -> Result<Vec<u8>> {
 
     match (&raw.data, opts.compression) {
         (RawData::F32(v), DngCompression::Deflate { tile, half }) => {
-            let tile = (tile.max(16) & !15) as usize;
+            let tile = deflate_tile(tile);
             let bp = if half { 2 } else { 4 };
             ifd.set(t::BITS_PER_SAMPLE, Value::Short(vec![(bp * 8) as u16; cpp]));
             ifd.set(t::SAMPLE_FORMAT, Value::Short(vec![3; cpp]));
@@ -417,7 +428,7 @@ pub fn write_dng(raw: &RawImage, opts: &DngWriteOptions) -> Result<Vec<u8>> {
                     ifd.set_image(ImageData::Strips { rows_per_strip: rows as u32, strips });
                 }
                 DngCompression::Deflate { tile, .. } => {
-                    let tile = (tile.max(16) & !15) as usize;
+                    let tile = deflate_tile(tile);
                     ifd.set(t::BITS_PER_SAMPLE, Value::Short(vec![16; cpp]));
                     ifd.set(t::COMPRESSION, Value::Short(vec![compression::ADOBE_DEFLATE]));
                     ifd.set(t::PREDICTOR, Value::Short(vec![2]));
@@ -546,3 +557,45 @@ pub fn write_rendered_dng(
     let order = ByteOrder::Little;
     write_dng(&raw, &DngWriteOptions { compression: DngCompression::Deflate { tile: 256, half: true }, order, xmp })
 }
+
+#[cfg(test)]
+mod tests {
+    use super::*;
+    use crate::{BlackLevel, OpcodeLists, RawData, RawFormat, RawImage, Rect};
+
+    /// Deflate tiles of `tile × tile` pad into a square buffer that grows with the square: a
+    /// caller-supplied edge of `u32::MAX` would make the writer pad an 8 × 8 image into billions of
+    /// edge-replicate iterations and a multi-gigabyte buffer. The clamp keeps the bounded shape — same
+    /// file as requesting the cap exactly, and a DNG either way.
+    #[test]
+    fn a_hostile_deflate_tile_edge_is_clamped() {
+        let (w, h) = (8usize, 8usize);
+        let full = Rect::new(0, 0, w, h);
+        let raw = RawImage {
+            format: RawFormat::Dng,
+            width: w,
+            height: h,
+            cpp: 1,
+            data: RawData::U16((0..64).map(|i| i as u16 * 129).collect()),
+            cfa: None,
+            bits: 12,
+            black: BlackLevel::uniform(0.0),
+            white: vec![4095.0],
+            active_area: full,
+            crop: full,
+            orientation: lightcraft_geom::Orientation::Normal,
+            color: crate::ColorData::default(),
+            wb_multipliers: None,
+            linearized: false,
+            pixel_aspect: 1.0,
+            opcodes: OpcodeLists::default(),
+            metadata: Default::default(),
+            lens_metadata: Default::default(),
+        };
+        let opts = |tile: u32| DngWriteOptions { compression: DngCompression::Deflate { tile, half: false }, ..DngWriteOptions::default() };
+        let hostile = write_dng(&raw, &opts(u32::MAX)).expect("the clamped tile writes");
+        assert_eq!(hostile, write_dng(&raw, &opts(2048)).expect("the cap itself writes"), "u32::MAX is clamped to the cap");
+        assert_ne!(hostile, write_dng(&raw, &opts(256)).expect("a normal tile writes"), "the clamp is not a no-op");
+        assert_eq!(crate::probe(&hostile), Some(RawFormat::Dng), "the clamped output is still a DNG");
+    }
+}
diff --git a/crates/raw/src/opcodes.rs b/crates/raw/src/opcodes.rs
index 6cf224984..d5a3ffd1e 100644
--- a/crates/raw/src/opcodes.rs
+++ b/crates/raw/src/opcodes.rs
@@ -656,18 +656,38 @@ fn fix_pixels(buf: &mut [f32], w: usize, h: usize, cpp: usize, cfa: Option<&Cfa>
     }
 }
 
+/// Most full-image passes of one `OpcodeList3`: every warp record is a full-image allocation and resample
+/// pass and every bad-pixel record a full flatten-and-rebuild, and a hostile record may repeat either
+/// thousands of times. Real DNGs carry at most a couple; passes past the cap are skipped.
+const MAX_LIST3_PASSES: usize = 8;
+
 /// Apply `OpcodeList3` (on the demosaiced RGB image, values normalised to [0, 1]).
 pub fn apply_list3(list: &[Opcode], img: &mut Rgb32f) {
     if list.is_empty() {
         return;
     }
     let (w, h) = (img.width, img.height);
+    let mut passes = 0usize;
     for op in applied_ops(list) {
         match op {
-            Opcode::WarpRectilinear { planes, center } => *img = warp_rectilinear(img, planes, *center),
-            Opcode::WarpRectilinear2 { planes, center, reciprocal, .. } => *img = warp_rectilinear2(img, planes, *center, *reciprocal),
+            Opcode::WarpRectilinear { planes, center } => {
+                if passes < MAX_LIST3_PASSES {
+                    passes += 1;
+                    *img = warp_rectilinear(img, planes, *center);
+                }
+            }
+            Opcode::WarpRectilinear2 { planes, center, reciprocal, .. } => {
+                if passes < MAX_LIST3_PASSES {
+                    passes += 1;
+                    *img = warp_rectilinear2(img, planes, *center, *reciprocal);
+                }
+            }
             Opcode::WarpFisheye { .. } | Opcode::TrimBounds { .. } | Opcode::Unknown { .. } => {}
             other => {
+                if passes >= MAX_LIST3_PASSES {
+                    continue;
+                }
+                passes += 1;
                 let mut flat: Vec<f32> = img.data.iter().flat_map(|p| *p).collect();
                 apply_list(std::slice::from_ref(other), &mut flat, w, h, 3, None, 1.0);
                 for (d, c) in img.data.iter_mut().zip(flat.as_chunks::<3>().0) {
@@ -765,6 +785,27 @@ pub(crate) mod tests {
         a.iter().flat_map(|v| v.to_be_bytes()).collect()
     }
 
+    /// Warp and bad-pixel records each cost a full-image pass, and a hostile `OpcodeList3` repeats them
+    /// thousands of times ([`MAX_LIST3_PASSES`] bounds the multiplier); identity warps below the cap must
+    /// still apply, exactly, so the same image comes out.
+    #[test]
+    fn list3_pass_cap_skips_repeated_records() {
+        let mut img = Rgb32f::new(8, 6);
+        for (i, px) in img.data.iter_mut().enumerate() {
+            *px = [i as f32 / 2.0, (i % 8) as f32, (i / 8) as f32];
+        }
+        let orig: Vec<[f32; 3]> = img.data.clone();
+        let list: Vec<Opcode> =
+            (0..MAX_LIST3_PASSES * 5).map(|_| Opcode::WarpRectilinear { planes: vec![[1.0, 0.0, 0.0, 0.0, 0.0, 0.0]], center: [0.5, 0.5] }).collect();
+        apply_list3(&list, &mut img);
+        assert_eq!(img.data, orig, "identity warps change nothing, and the cap skips the repeated rest");
+
+        // a real warp below the cap is still applied
+        let one = [Opcode::WarpRectilinear { planes: vec![[2.0, 0.0, 0.0, 0.0, 0.0, 0.0]], center: [0.5, 0.5] }];
+        apply_list3(&one, &mut img);
+        assert_ne!(img.data, orig, "a genuine warp record is not skipped");
+    }
+
     #[test]
     fn parse_and_apply_area_ops() {
         let (w, h) = (4usize, 3usize);
diff --git a/crates/raw/src/preview.rs b/crates/raw/src/preview.rs
index 95f9bdcaa..4bcf6963e 100644
--- a/crates/raw/src/preview.rs
+++ b/crates/raw/src/preview.rs
@@ -103,8 +103,6 @@ fn jpeg_frame(b: &[u8]) -> Option<(u32, u32, u8)> {
     let be16 = |k: usize| Some(u32::from(u16::from_be_bytes([at(k)?, at(k + 1)?])));
     Some((be16(7)?, be16(5)?, at(9)?))
 }
-
-/// Whether `b` is a JPEG XL file: a bare codestream or the ISO-BMFF container's signature box.
 fn is_jxl(b: &[u8]) -> bool {
     b.starts_with(&[0xff, 0x0a]) || b.starts_with(&[0, 0, 0, 0x0c, b'J', b'X', b'L', b' ', 0x0d, 0x0a, 0x87, 0x0a])
 }
@@ -128,20 +126,17 @@ fn candidates<'a>(data: &'a [u8], ifd: &Ifd, base: u64, out: &mut Vec<&'a [u8]>)
     }
     if matches!(ifd.u16(t::COMPRESSION), Some(6) | Some(7) | Some(34892))
         && let Ok(info) = ifd.image()
+        && let Some(chunk) = info.single_chunk(data.len() as u64)
+        && let Some(s) = chunk_bytes(data, &chunk)
     {
-        let chunks = info.chunks(data.len() as u64);
-        if chunks.len() == 1
-            && let Some(s) = chunk_bytes(data, &chunks[0])
-        {
-            out.push(s);
-        }
+        out.push(s);
     }
     // a rendered (RGB or grey, never CFA/LinearRaw/mask) JPEG XL preview in one chunk
     if ifd.u16(t::COMPRESSION) == Some(t::compression::JPEG_XL)
         && matches!(ifd.u16(t::PHOTOMETRIC), Some(t::photometric::BLACK_IS_ZERO | t::photometric::RGB))
         && let Ok(info) = ifd.image()
-        && let [chunk] = info.chunks(data.len() as u64).as_slice()
-        && let Some(s) = chunk_bytes(data, chunk)
+        && let Some(chunk) = info.single_chunk(data.len() as u64)
+        && let Some(s) = chunk_bytes(data, &chunk)
         && is_jxl(s)
     {
         out.push(s);
@@ -397,8 +392,14 @@ fn cr3_preview(bytes: &[u8]) -> Option<&[u8]> {
 /// Canon CR3 (ISO base media file): the `PRVW` box (Laurent Clévy's CR3 notes; layout confirmed on a CC0
 /// sample) is `u32 size, "PRVW", u32 0, u16 ?, u16 width, u16 height, u16 ?, u32 jpeg length, JPEG`; the smaller
 /// `THMB` box has the same shape. Returns the larger valid one.
+/// Marker-walk budget of the CR3 fallback: candidates can overlap (each claiming the rest of the file) and
+/// [`is_dct_jpeg`] walks each marker by marker, so walking every candidate would be quadratic in file size.
+/// The `THMB`/`PRVW` previews this finds are far below the cap together; once it is spent the scan stops.
+const CR3_MAX_WALK: usize = 8 << 20;
+
 fn cr3_preview_boxes(bytes: &[u8]) -> Option<&[u8]> {
     let mut best: Option<&[u8]> = None;
+    let mut walked = 0usize;
     for tag in [b"PRVW", b"THMB"] {
         let mut from = 0;
         while let Some(i) = bytes.get(from..).and_then(|s| s.windows(4).position(|w| w == tag)).map(|p| p + from) {
@@ -411,6 +412,11 @@ fn cr3_preview_boxes(bytes: &[u8]) -> Option<&[u8]> {
                 continue;
             }
             let jpeg = &bytes[j..j + len];
+            // One that doesn't fit the budget left is skipped; a smaller one later may still fit.
+            if walked + jpeg.len() > CR3_MAX_WALK {
+                continue;
+            }
+            walked += jpeg.len();
             if is_dct_jpeg(jpeg) {
                 if best.is_none_or(|b| b.len() < jpeg.len()) {
                     best = Some(jpeg);
@@ -440,6 +446,52 @@ mod tests {
         j
     }
 
+    /// Preview extraction only serves single-chunk JPEG-compressed IFDs and asks the `single_chunk` first:
+    /// a TIFF whose strip array declares 100 000 one-row strips and no StripByteCounts must not build their
+    /// descriptor vector, and of course finds no preview in it.
+    #[test]
+    fn a_multi_strip_jpeg_ifd_costs_no_descriptor_vector() {
+        let mut ifd = IfdBuilder::new();
+        ifd.set(t::COMPRESSION, Value::Short(vec![7]));
+        ifd.set(t::IMAGE_WIDTH, Value::Long(vec![16]));
+        ifd.set(t::IMAGE_LENGTH, Value::Long(vec![100_000]));
+        ifd.set(t::ROWS_PER_STRIP, Value::Short(vec![1]));
+        ifd.set(t::STRIP_OFFSETS, Value::Byte((0..100_000).map(|i| (i % 255 + 1) as u8).collect()));
+        let file = TiffWriter::default().write(&[ifd]).unwrap();
+        let (tx, rx) = std::sync::mpsc::channel();
+        std::thread::spawn(move || tx.send(embedded_preview(&file)));
+        assert_eq!(rx.recv_timeout(std::time::Duration::from_secs(2)), Ok(None));
+    }
+
+    /// CR3 candidates claim overlapping extents: each block's first bytes double as a 40-byte jump marker so
+    /// a walk jogs past the next header and reaches the end of the file, making every one of the 9000
+    /// candidates walk its whole suffix before the marker-walk budget — quadratic without it. Nothing here
+    /// is a JPEG (no frame header), so the answer is `None` either way.
+    #[test]
+    fn cr3_preview_boxes_stop_walking_when_the_budget_is_spent() {
+        // one 256-byte block per candidate, all marker-aligned so walks chain through later blocks:
+        // 0..4, size (itself a jump marker of 40 bytes); 4..8, "PRVW"; 20..24, the claimed length
+        // (to the file end); 24..28, an SOI plus a marker jumping to the fill at 40; 64..256, a fill of
+        // 4-byte markers (`ff 01 00 02`).
+        let blocks = 9000usize;
+        let total = blocks * 256;
+        let mut f = Vec::with_capacity(total);
+        for k in 0..blocks {
+            let base = k * 256;
+            f.extend_from_slice(&[0xff, 0x01, 0x00, 0x26, b'P', b'R', b'V', b'W', 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0]);
+            f.extend_from_slice(&u32::try_from(total - base - 24).unwrap().to_be_bytes());
+            f.extend_from_slice(&[0xff, 0xd8, 0x00, 0x24, 0xff, 0x01, 0x00, 0x26, 0, 0, 0, 0, 0, 0, 0, 0]);
+            f.resize(base + 64, 0); // 40..64 filler: walks jump over it, so its bytes are free
+            for _ in 0..48 {
+                f.extend_from_slice(&[0xff, 0x01, 0x00, 0x02]);
+            }
+        }
+        assert_eq!(f.len(), total);
+        let (tx, rx) = std::sync::mpsc::channel();
+        std::thread::spawn(move || tx.send(cr3_preview_boxes(&f).map(|s| s.len())));
+        assert_eq!(rx.recv_timeout(std::time::Duration::from_secs(2)), Ok(None), "no PRVW candidate is a JPEG");
+    }
+
     /// A minimal RAF: the fixed header (JPEG offset/length at 84/88), the JPEG, then a raw tail the
     /// caller must not have to read. `jpeg_len` is written as declared, so a test can claim more than
     /// the JPEG holds the way a padded container does.
diff --git a/crates/raw/src/sparse.rs b/crates/raw/src/sparse.rs
index d67a92b40..8a404a25e 100644
--- a/crates/raw/src/sparse.rs
+++ b/crates/raw/src/sparse.rs
@@ -35,6 +35,12 @@ const MAX_ENTRIES: u64 = 8192;
 const MAX_BOXES: usize = 4096;
 /// Child IFDs listed by one `SubIFDs` entry.
 const MAX_CHILDREN: u64 = 4096;
+/// Pending child-IFD offsets the walker may queue at once: no more than it can ever visit
+/// (the same [`MAX_IFDS`] the seen set is held to, deduplicated as they are popped), so an alley
+/// of hostile `SubIFDs` entries can't grow the queue into the tens of millions of pointers.
+/// The plan never guesses: the walk refuses and the plan reports the whole file when it would go
+/// past the cap.
+const MAX_PENDING: usize = MAX_IFDS;
 /// The RAF raw container's pointer to its raw IFD.
 const RAF_RAW_IFD: u16 = 0xf000;
 
@@ -308,6 +314,13 @@ fn walk_tiff(w: &mut Want, origin: u64, data: &[u8], extra: &[u16]) -> Result<Ra
     };
     let mut stack = vec![first];
     let mut seen = HashSet::new();
+    // Every offset ever queued: the pending cap counts distinct IFDs, so a thousand references to
+    // one child cost one visit, not a thousand.
+    let mut queued = HashSet::from([first]);
+    // Every IFD table and out-of-line value, collected and merged once at the end: an insert
+    // per entry would scan the ranges of every entry before it — quadratic in the metadata
+    // this walker collects.
+    let mut spans: Vec<(u64, u64)> = Vec::new();
     while let Some(off) = stack.pop() {
         if off == 0 || off >= len || seen.len() >= MAX_IFDS || !seen.insert(off) {
             continue;
@@ -329,7 +342,7 @@ fn walk_tiff(w: &mut Want, origin: u64, data: &[u8], extra: &[u16]) -> Result<Ra
         if !w.want(at(off), at(end)) {
             continue;
         }
-        meta.insert(at(off), at(end));
+        spans.push((at(off), at(end)));
         for i in 0..n_read {
             let p = table + i * entry;
             let Ok(pu) = usize::try_from(p) else { continue };
@@ -348,7 +361,7 @@ fn walk_tiff(w: &mut Want, origin: u64, data: &[u8], extra: &[u16]) -> Result<Ra
             };
             let Some(value_end) = start.checked_add(total).filter(|&e| e <= len) else { continue };
             if total > inline {
-                meta.insert(at(start), at(value_end));
+                spans.push((at(start), at(value_end)));
             }
             let child = matches!(tag, t::SUB_IFDS | t::EXIF_IFD | t::GPS_IFD | t::INTEROP_IFD) || extra.contains(&tag);
             let locates = child || matches!(tag, t::STRIP_OFFSETS | t::STRIP_BYTE_COUNTS | t::TILE_OFFSETS | t::TILE_BYTE_COUNTS);
@@ -359,14 +372,24 @@ fn walk_tiff(w: &mut Want, origin: u64, data: &[u8], extra: &[u16]) -> Result<Ra
             let take = if tag == t::SUB_IFDS { count.min(MAX_CHILDREN) } else { count.min(1) };
             for k in 0..take {
                 if let Some(v) = unsigned(data, order, typ, start + k * typ.size() as u64) {
+                    if v == 0 || v >= len || !queued.insert(v) {
+                        continue;
+                    }
+                    if stack.len() >= MAX_PENDING {
+                        return Err("too many child IFDs queued to visit");
+                    }
                     stack.push(v);
                 }
             }
         }
-        if complete && let Some(next) = offset_at(table_end) {
+        if complete && let Some(next) = offset_at(table_end).filter(|&next| next != 0 && next < len && queued.insert(next)) {
+            if stack.len() >= MAX_PENDING {
+                return Err("too many child IFDs queued to visit");
+            }
             stack.push(next);
         }
     }
+    meta.extend(spans);
     Ok(meta)
 }
 
@@ -585,8 +608,74 @@ mod tests {
         assert_eq!(run(&file, 16, 0).0, HeaderPlan::Whole("an ARW6 header probe reads its tiles"));
     }
 
-    /// A TIFF with a million one-byte strips listed in descending order and all byte counts 0: the plan is
-    /// built in one sort and merge, not one pass over all strips (or all holes) per strip.
+    /// An IFD whose `SubIFDs` entries would queue 33 million child pointers (8192 entries of
+    /// 4096 values apiece, all pointing at the same array) is refused at the walker's pending
+    /// cap instead of growing the queue — and the plan reports the whole file, never guessing.
+    #[test]
+    fn a_subifds_alley_is_refused_at_the_pending_cap() {
+        // First read everything, so the walk reaches the directory table itself.
+        let n = 8192u32;
+        let len = 8 + 2 + (n * 12 + 4 + 4 * 4096) as usize;
+        let mut tiff = b"II*\0\x08\0\0\0".to_vec();
+        tiff.extend_from_slice(&(n as u16).to_le_bytes());
+        let mut entry = |tag: u16, typ: u16, count: u32, value: u32| {
+            tiff.extend_from_slice(&tag.to_le_bytes());
+            tiff.extend_from_slice(&typ.to_le_bytes());
+            tiff.extend_from_slice(&count.to_le_bytes());
+            tiff.extend_from_slice(&value.to_le_bytes());
+        };
+        // header (8) + count field (2) + the {n} numbers and pointer (4), then the value array
+        let values_at = (8 + 2u64 + u64::from(n) * 12 + 4) as u32;
+        for _ in 0..n {
+            entry(t::SUB_IFDS, 4, MAX_CHILDREN as u32, values_at);
+        }
+        tiff.extend_from_slice(&0u32.to_le_bytes());
+        tiff.extend((1..=4096u32).flat_map(u32::to_le_bytes));
+        let mut loaded = Ranges::new();
+        loaded.insert(0, len as u64);
+        let mut w = Want::new(&tiff, &loaded);
+        assert_eq!(walk_tiff(&mut w, 0, &tiff, &[]), Err("too many child IFDs queued to visit"));
+    }
+
+    /// A TIFF with many out-of-line values across 512 directories is planned in one sort and
+    /// merge, not one pass over all accumulated ranges per value (CodeRabbit #52: before, each
+    /// `Ranges::insert` copied every range found before it — the ~million disjoint values of the
+    /// fixture below ask for more copying than the timeout allows).
+    #[test]
+    fn many_out_of_line_values_plan_fast() {
+        let (ifds, values) = (512usize, 2048usize);
+        let ifd_len = 2 + values * 12 + 4;
+        let values_at = 8 + ifds * ifd_len;
+        let len = values_at + values * 8;
+        let mut tiff = vec![0u8; len];
+        tiff[..8].copy_from_slice(b"II*\0\x08\0\0\0");
+        for i in 0..ifds {
+            let at = 8 + i * ifd_len;
+            // {values} out-of-line strings (count 8 > the 4 inline bytes), then the next-IFD
+            // pointer; every value is a disjoint 8-byte range for the merge to handle.
+            tiff[at..at + 2].copy_from_slice(&(values as u16).to_le_bytes());
+            for k in 0..values {
+                let e = at + 2 + k * 12;
+                tiff[e..e + 2].copy_from_slice(&t::MAKE.to_le_bytes());
+                tiff[e + 2..e + 4].copy_from_slice(&2u16.to_le_bytes()); // ASCII: 8 bytes > inline — a span per entry
+                tiff[e + 4..e + 8].copy_from_slice(&8u32.to_le_bytes());
+                tiff[e + 8..e + 12].copy_from_slice(&(values_at as u32 + (k * 8) as u32).to_le_bytes());
+            }
+            let next = if i == ifds - 1 { 0u32 } else { (at + ifd_len) as u32 };
+            tiff[at + ifd_len - 4..at + ifd_len].copy_from_slice(&next.to_le_bytes());
+        }
+        let (tx, rx) = std::sync::mpsc::channel();
+        std::thread::spawn(move || {
+            let mut loaded = Ranges::new();
+            loaded.insert(0, len as u64);
+            let _ = tx.send(header_plan(&tiff, &loaded));
+        });
+        rx.recv_timeout(std::time::Duration::from_secs(20)).expect("header_plan took longer than 20 s");
+    }
+
+    /// A TIFF with a million one-byte strips listed in descending order and all byte counts 0:
+    /// the plan is built in one sort and merge, not one pass over all strips (or all holes) per
+    /// strip.
     #[test]
     fn many_strips_without_byte_counts_plan_fast() {
         let n = 1_000_000u32;
diff --git a/crates/raw/src/tiffraw.rs b/crates/raw/src/tiffraw.rs
index a781151b4..57878b881 100644
--- a/crates/raw/src/tiffraw.rs
+++ b/crates/raw/src/tiffraw.rs
@@ -105,48 +105,93 @@ pub fn read_image(data: &[u8], info: &ImageInfo, order: ByteOrder, packing: Pack
     let chunks = info.chunks(data.len() as u64);
     let planar = info.planar == 2 && cpp > 1;
     let ccpp = if planar { 1 } else { cpp };
-    let decoded: Vec<Result<(Chunk, ChunkPx)>> =
-        chunks.par_iter().map(|c| decode_chunk(data, info, c, order, packing, ccpp, bits, float).map(|p| (*c, p))).collect();
+    // The chunks are decoded and copied into the output in groups whose combined nominal size stays within
+    // a few times the output buffer's: everything decoded at once would retain the whole image twice, and
+    // a hostile tile table's chosen padding could stretch that much further (issue #1517). One group
+    // still decodes in parallel; the grid order groups make, the copies stay disjoint.
+    // The tile grid decides how much is decoded, whatever the file's bytes: the nominal sizes of all
+    // the chunks stay within a few times the image (edge tiles pad it) before any is decoded.
+    let nominal = chunks.iter().fold(0usize, |sum, c| sum.saturating_add(chunk_samples(c, ccpp)));
+    if nominal > total.saturating_mul(4).saturating_add(1 << 24) {
+        return Err(RawError::Corrupt("the tile grid is much larger than the image".into()));
+    }
+    let group_samples = (total / 4).max(1 << 20);
     let mut out_u16 = if float { Vec::new() } else { vec![0u16; total] };
     let mut out_f32 = if float { vec![0f32; total] } else { Vec::new() };
-    for r in decoded {
-        // a chunk that cannot be decoded is not a partial image: the file stays preview-only
-        let (c, px) = r?;
-        let (cw, ch) = (c.width as usize, c.height as usize);
-        let (x0, y0) = (c.x as usize, c.y as usize);
-        if x0 >= w || y0 >= h {
-            continue;
+    let mut decode_from = 0usize;
+    while decode_from < chunks.len() {
+        let mut to = decode_from;
+        let mut taken = 0usize;
+        for (k, c) in chunks[decode_from..].iter().enumerate() {
+            let n = chunk_samples(c, ccpp);
+            if taken > 0 && taken.saturating_add(n) > group_samples {
+                break;
+            }
+            taken = taken.saturating_add(n);
+            to = decode_from + k + 1;
         }
-        let copy_w = cw.min(w - x0);
-        let copy_h = ch.min(h - y0);
-        for y in 0..copy_h {
-            for x in 0..copy_w {
-                for s in 0..ccpp {
-                    let src = (y * cw + x) * ccpp + s;
-                    let dst_s = if planar { c.plane as usize } else { s };
-                    if dst_s >= cpp {
-                        continue;
-                    }
-                    let dst = ((y0 + y) * w + x0 + x) * cpp + dst_s;
-                    match &px {
-                        ChunkPx::U16(v) => {
-                            if let (Some(o), Some(&s)) = (out_u16.get_mut(dst), v.get(src)) {
-                                *o = s;
-                            }
+        let decoded: Vec<Result<(Chunk, ChunkPx)>> =
+            chunks[decode_from..to].par_iter().map(|c| decode_chunk(data, info, c, order, packing, ccpp, bits, float).map(|p| (*c, p))).collect();
+        for r in decoded {
+            // a chunk that cannot be decoded is not a partial image: the file stays preview-only
+            let (c, px) = r?;
+            let (cw, ch) = (c.width as usize, c.height as usize);
+            let (x0, y0) = (c.x as usize, c.y as usize);
+            if x0 >= w || y0 >= h {
+                continue;
+            }
+            let copy_w = cw.min(w - x0);
+            let copy_h = ch.min(h - y0);
+            for y in 0..copy_h {
+                for x in 0..copy_w {
+                    for s in 0..ccpp {
+                        let src = (y * cw + x) * ccpp + s;
+                        let dst_s = if planar { c.plane as usize } else { s };
+                        if dst_s >= cpp {
+                            continue;
                         }
-                        ChunkPx::F32(v) => {
-                            if let (Some(o), Some(&s)) = (out_f32.get_mut(dst), v.get(src)) {
-                                *o = s;
+                        let dst = ((y0 + y) * w + x0 + x) * cpp + dst_s;
+                        match &px {
+                            ChunkPx::U16(v) => {
+                                if let (Some(o), Some(&s)) = (out_u16.get_mut(dst), v.get(src)) {
+                                    *o = s;
+                                }
+                            }
+                            ChunkPx::F32(v) => {
+                                if let (Some(o), Some(&s)) = (out_f32.get_mut(dst), v.get(src)) {
+                                    *o = s;
+                                }
                             }
                         }
                     }
                 }
             }
         }
+        decode_from = to;
     }
     Ok(if float { RawData::F32(out_f32) } else { RawData::U16(out_u16) })
 }
 
+/// Bytes that `n` samples take in a row of an uncompressed or inflated chunk, laid out as
+/// [`unpack_chunk`] reads them: whole bytes or 16-bit words, or 32-bit words for `Words32Msb`.
+fn packed_row_bytes(n: u64, bits: u32, packing: Packing, float: bool) -> u64 {
+    if float {
+        return n.saturating_mul(u64::from(bits.div_ceil(8)));
+    }
+    let bit_len = n.saturating_mul(u64::from(bits));
+    match (bits, packing) {
+        (8, _) => n,
+        (16, _) | (_, Packing::Word16) => n.saturating_mul(2),
+        (_, Packing::Msb | Packing::Lsb) => bit_len.div_ceil(8),
+        (_, Packing::Words32Msb) => bit_len.div_ceil(32).saturating_mul(4),
+    }
+}
+
+/// A chunk's nominal decoded size in samples (per plane, as the decoder builds it).
+fn chunk_samples(c: &Chunk, ccpp: usize) -> usize {
+    (c.width as usize).saturating_mul(c.height as usize).saturating_mul(ccpp)
+}
+
 #[allow(clippy::too_many_arguments)]
 fn decode_chunk(data: &[u8], info: &ImageInfo, c: &Chunk, order: ByteOrder, packing: Packing, cpp: usize, bits: u32, float: bool) -> Result<ChunkPx> {
     let src = chunk_bytes(data, c).ok_or_else(|| RawError::Corrupt("chunk offset past end of file".into()))?;
@@ -179,9 +224,13 @@ fn decode_chunk(data: &[u8], info: &ImageInfo, c: &Chunk, order: ByteOrder, pack
         }
         comp::LOSSY_JPEG => {
             // lossy DNG: each chunk is a baseline (DCT) JPEG of 8-bit samples
-            let (px, jw, jh, jc) = lossy_jpeg(src, cpp)?;
-            let mut v = vec![0u16; n];
-            for y in 0..ch.min(jh) {
+            let (px, jw, jh, jc) = lossy_jpeg(src, cpp, MAX_JPEG_SAMPLES)?;
+            // the buffer holds the rows the decoded JPEG covers (the caller zero-fills the tile's
+            // remainder and reads only rows it fills): a tile-many-larger decoded JPEG does not
+            // get the nominal tile's full buffer (issue #1517)
+            let rows = ch.min(jh);
+            let mut v = vec![0u16; rows.max(1).saturating_mul(cw).saturating_mul(cpp)];
+            for y in 0..rows {
                 for x in 0..cw.min(jw) {
                     for k in 0..cpp {
                         v[(y * cw + x) * cpp + k] = px[(y * jw + x) * jc + k.min(jc - 1)] as u16;
@@ -191,13 +240,28 @@ fn decode_chunk(data: &[u8], info: &ImageInfo, c: &Chunk, order: ByteOrder, pack
             Ok(ChunkPx::U16(v))
         }
         comp::ADOBE_DEFLATE | comp::DEFLATE => {
-            let bytes_per = if float { bits.div_ceil(8) as usize } else { 0 };
             // row bytes in u64: a wrapping `cw · cpp · …` in usize could come out small on 32-bit targets and slip past the gate
-            let row_bytes = if float { cw as u64 * cpp as u64 * bytes_per as u64 } else { (cw as u64 * cpp as u64 * bits as u64).div_ceil(8) };
+            let row_bytes = packed_row_bytes(cw as u64 * cpp as u64, bits, packing, float);
             // the gate caps at MAX_SAMPLES (≤ 2^30), so the `usize` cast below is lossless on 32-bit targets too
             let inflate_len =
                 crate::checked_pixel_count(row_bytes, ch as u64).ok_or_else(|| RawError::Corrupt("bad TIFF chunk dimensions".into()))?;
+            // Deflate compresses at most about 1:1032, so a source this far under half of its
+            // nominal length cannot reconstruct the chunk: refused before the nominal buffer is
+            // inflated and predicted, which padding-only work would make gigabytes.
+            if (src.len() as u64).saturating_mul(2048) < inflate_len {
+                return Err(RawError::Corrupt(format!("a deflated chunk of {inflate_len} bytes is packed into only {} bytes", src.len())));
+            }
             let raw = inflate(src, inflate_len as usize)?;
+            // The stream has to reach the last row inside the image (edge strips may stop there);
+            // it is laid out in nominal rows, so shorter is a truncated chunk, not a picture.
+            let last = packed_row_bytes(vw as u64 * cpp as u64, bits, packing, float);
+            let visible = row_bytes.saturating_mul(vh.saturating_sub(1) as u64).saturating_add(last);
+            if (raw.len() as u64) < visible {
+                return Err(RawError::Corrupt(format!(
+                    "a deflated chunk holds {} bytes, fewer than the {visible} bytes its in-image samples span",
+                    raw.len()
+                )));
+            }
             unpack_chunk(&raw, order, packing, cw, ch, cpp, bits, float, info.predictor)
         }
         comp::JPEG_XL => jxl_chunk(src, cw, ch, vw, vh, cpp, bits, float),
@@ -228,19 +292,31 @@ fn jxl_chunk_check(src: &[u8], cw: usize, ch: usize, vw: usize, vh: usize, cpp:
     jxl_chunk(src, cw, ch, vw, vh, cpp, bits, float).map(|_| ())
 }
 
+/// The most samples a tiled JPEG chunk or a white-balance preview may decode to: far more than
+/// any real lossy tile or preview carries, and small enough that a JPEG header alone cannot size
+/// a multi-gigabyte allocation.
+pub(crate) const MAX_JPEG_SAMPLES: usize = 1 << 26;
+
 /// Decode one baseline JPEG chunk to 8-bit samples: (samples, width, height, channels).
-pub(crate) fn lossy_jpeg(src: &[u8], cpp: usize) -> Result<(Vec<u8>, usize, usize, usize)> {
+pub(crate) fn lossy_jpeg(src: &[u8], cpp: usize, max_samples: usize) -> Result<(Vec<u8>, usize, usize, usize)> {
     use zune_core::bytestream::ZCursor;
     use zune_core::colorspace::ColorSpace;
     use zune_core::options::DecoderOptions;
     let cs = if cpp == 1 { ColorSpace::Luma } else { ColorSpace::RGB };
     let opts = DecoderOptions::default().set_max_width(1 << 16).set_max_height(1 << 16).set_strict_mode(false).jpeg_set_out_colorspace(cs);
     let mut d = zune_jpeg::JpegDecoder::new_with_options(ZCursor::new(src), opts);
-    let px = d.decode().map_err(|e| RawError::Corrupt(format!("lossy JPEG tile: {e}")))?;
+    // The header is read first: the JPEG's own dimensions, not the enclosing tile's, size every
+    // allocation `decode` makes, and they may claim billions of pixels.
+    d.decode_headers().map_err(|e| RawError::Corrupt(format!("lossy JPEG tile: {e}")))?;
     let info = d.info().ok_or_else(|| RawError::Corrupt("lossy JPEG tile without a header".into()))?;
     let (w, h) = (info.width as usize, info.height as usize);
     let c = if cpp == 1 { 1 } else { 3 };
-    if w == 0 || h == 0 || px.len() < w * h * c {
+    let out = w as u64 * h as u64 * c as u64;
+    if w == 0 || h == 0 || out > max_samples as u64 {
+        return Err(RawError::Corrupt(format!("a lossy JPEG of {w} × {h} × {c} would exceed the {max_samples} output samples allowed")));
+    }
+    let px = d.decode().map_err(|e| RawError::Corrupt(format!("lossy JPEG tile: {e}")))?;
+    if px.len() < w * h * c {
         return Err(RawError::Corrupt("lossy JPEG tile: short output".into()));
     }
     Ok((px, w, h, c))
@@ -471,4 +547,97 @@ mod lossy_tests {
         // half of the visible rows are missing
         assert!(decode(8, 4).is_err());
     }
+
+    /// A lossy JPEG whose header alone claims more samples than any real tile or preview (here
+    /// 40000 × 40000 × 3) is refused from the header, before the decoder allocates its output
+    /// from the JPEG's own dimensions.
+    #[test]
+    fn an_oversized_lossy_jpeg_header_is_refused_before_decoding() {
+        // A real 8 × 8 baseline JPEG, whose frame header then claims other dimensions: the decoder
+        // parses the header, and the size check is what refuses it.
+        let px = vec![128u8; 8 * 8 * 3];
+        let mut j = Vec::new();
+        jpeg_encoder::Encoder::new(&mut j, 90).encode(&px, 8, 8, jpeg_encoder::ColorType::Rgb).unwrap();
+        // SOF0: marker, length, precision, then the height and the width
+        let sof = j.windows(2).position(|w| w == [0xff, 0xc0]).expect("a baseline frame header");
+        let claim = |j: &mut Vec<u8>, size: u16| {
+            j[sof + 5..sof + 7].copy_from_slice(&size.to_be_bytes());
+            j[sof + 7..sof + 9].copy_from_slice(&size.to_be_bytes());
+        };
+        claim(&mut j, 40_000);
+        let RawError::Corrupt(refused) = lossy_jpeg(&j, 3, MAX_JPEG_SAMPLES).unwrap_err() else { panic!("a corrupt-data error") };
+        assert!(refused.contains("would exceed"), "{refused}");
+        // a header inside the budget passes the size check (and then fails to decode only for lack of data)
+        claim(&mut j, 1024);
+        match lossy_jpeg(&j, 3, MAX_JPEG_SAMPLES) {
+            Ok(_) => {}
+            Err(RawError::Corrupt(m)) => assert!(!m.contains("would exceed"), "the smaller header was refused for its size: {m}"),
+            Err(other) => panic!("unexpected error: {other:?}"),
+        }
+    }
+
+    /// A lossy tile whose JPEG decodes far less than the nominal tile is fine: the rows the JPEG
+    /// covers hold its pixels, the rest of the output stays zero (and the tile's intermediate buffer
+    /// is sized by the JPEG, not by the nominal tile).
+    #[test]
+    fn a_small_lossy_jpeg_in_a_large_nominal_tile_decodes_with_zeros_below() {
+        let px: Vec<u8> = (0..8 * 8).flat_map(|_| [30u8, 90, 150]).collect();
+        let mut j = Vec::new();
+        jpeg_encoder::Encoder::new(&mut j, 100).encode(&px, 8, 8, jpeg_encoder::ColorType::Rgb).unwrap();
+        let info = ImageInfo {
+            width: 16,
+            height: 16,
+            bits_per_sample: vec![8, 8, 8],
+            samples_per_pixel: 3,
+            compression: comp::LOSSY_JPEG,
+            photometric: 34892,
+            planar: 1,
+            predictor: 1,
+            sample_format: 1,
+            new_subfile_type: 0,
+            layout: Layout::Tiles { tile_width: 16, tile_height: 16 },
+            offsets: vec![0],
+            byte_counts: vec![j.len() as u64],
+        };
+        let RawData::U16(v) = read_image(&j, &info, ByteOrder::Little, Packing::Msb).unwrap() else { panic!("integer samples") };
+        assert_eq!(v.len(), 16 * 16 * 3, "the output is the full nominal image");
+        let px = |x: usize, y: usize| &v[(y * 16 + x) * 3..(y * 16 + x) * 3 + 3];
+        assert!((px(3, 3)[0] as i32 - 30).abs() <= 3 && (px(3, 3)[2] as i32 - 150).abs() <= 3, "covered rows: {:?}", px(3, 3));
+        assert!(px(3, 12).iter().all(|&s| s == 0), "rows below the JPEG stay zero: {:?}", px(3, 12));
+    }
+
+    /// A deflated tile is refused when its packed bytes are too few for deflate to have produced
+    /// the nominal chunk, or when the stream stops short of the rows inside the image; a fully
+    /// covered flat tile still decodes.
+    #[test]
+    fn a_short_or_undercovering_deflated_tile_is_refused() {
+        let info = |byte_counts: u64| ImageInfo {
+            width: 512,
+            height: 512,
+            bits_per_sample: vec![16],
+            samples_per_pixel: 1,
+            compression: comp::ADOBE_DEFLATE,
+            photometric: 32803,
+            planar: 1,
+            predictor: 1,
+            sample_format: 1,
+            new_subfile_type: 0,
+            layout: Layout::Tiles { tile_width: 512, tile_height: 512 },
+            offsets: vec![0],
+            byte_counts: vec![byte_counts],
+        };
+        // a complete flat tile: 512 KiB of zeros compresses to a few hundred bytes (well within
+        // deflate's packing bound) and inflates to every nominal byte the tile claims
+        let zlib = miniz_oxide::deflate::compress_to_vec_zlib(&vec![0u8; 512 * 512 * 2], 6);
+        assert_eq!(read_image(&zlib, &info(zlib.len() as u64), ByteOrder::Little, Packing::Msb), Ok(RawData::U16(vec![0; 512 * 512])));
+        // the same 1 KiB packed, but the stream claims a whole tile: a few hundred bytes cannot
+        // reconstruct 512 KiB from a decoder that compresses no further than about 1:1032
+        let zlib = miniz_oxide::deflate::compress_to_vec_zlib(&vec![0u8; 1024], 6);
+        assert!(matches!(read_image(&zlib, &info(512 * 512 * 2), ByteOrder::Little, Packing::Msb), Err(RawError::Corrupt(_))), "{zlib:?}");
+        // 500 KiB of zeros compress to a stream within the packing bound and inflating to more
+        // bytes than the in-image samples span, but 24 KiB short of the whole nominal tile:
+        // refused as truncated rather than filled with the predictor's padding
+        let zlib = miniz_oxide::deflate::compress_to_vec_zlib(&vec![0u8; 500 * 1000], 6);
+        assert!(matches!(read_image(&zlib, &info(zlib.len() as u64), ByteOrder::Little, Packing::Msb), Err(RawError::Corrupt(_))));
+    }
 }
diff --git a/crates/raw/src/vendor/mef.rs b/crates/raw/src/vendor/mef.rs
index 207bc8871..d5c5d83b4 100644
--- a/crates/raw/src/vendor/mef.rs
+++ b/crates/raw/src/vendor/mef.rs
@@ -89,6 +89,13 @@ pub(crate) fn decode(bytes: &[u8], mode: Mode) -> Result<RawImage> {
     // the white balance is measured from the samples, so the header probe reads them too
     let chunks = info.chunks(bytes.len() as u64);
     let src = chunks.first().and_then(|c| chunk_bytes(bytes, c)).ok_or_else(|| RawError::Corrupt("Mef strip outside file".into()))?;
+    // 12-bit MSB packing takes 3 bytes per 2 samples; a strip that cannot hold the declared
+    // samples is a truncated file, not a picture — unpacking it would run past the real bytes
+    // through every output sample (a short strip asks for the whole allocation and more).
+    let need = n.div_ceil(2).saturating_mul(3);
+    if src.len() < need {
+        return Err(RawError::Corrupt(format!("a Mef strip of {} bytes cannot hold the declared {n} samples", src.len())));
+    }
     let mut d = vec![0u16; n];
     crate::unpack::unpack_msb(src, 12, &mut d);
     let white = super::white_from_data(&d, 12);
@@ -138,6 +145,10 @@ mod tests {
     }
 
     fn sample(w: u32, h: u32, px: &[u16]) -> Vec<u8> {
+        sample_strip(w, h, &pack(px))
+    }
+
+    fn sample_strip(w: u32, h: u32, strip: &[u8]) -> Vec<u8> {
         let mut raw = IfdBuilder::new();
         raw.set(t::NEW_SUBFILE_TYPE, Value::Long(vec![0]));
         raw.set(t::IMAGE_WIDTH, Value::Long(vec![w]));
@@ -148,7 +159,7 @@ mod tests {
         raw.set(t::ORIENTATION, Value::Short(vec![6]));
         raw.set(t::CFA_REPEAT_PATTERN_DIM, Value::Short(vec![2, 2]));
         raw.set(t::CFA_PATTERN_EP, Value::Byte(vec![0, 1, 1, 2]));
-        raw.set_image(ImageData::Strips { rows_per_strip: h, strips: vec![pack(px)] });
+        raw.set_image(ImageData::Strips { rows_per_strip: h, strips: vec![strip.to_vec()] });
         let mut ifd0 = IfdBuilder::new();
         ifd0.set(t::MAKE, Value::Ascii("Mamiya-OP Co.,Ltd.".into()));
         ifd0.set(t::MODEL, Value::Ascii("MAMIYA ZD".into()));
@@ -156,6 +167,52 @@ mod tests {
         TiffWriter::new(ByteOrder::Big, false).write(&[ifd0]).unwrap()
     }
 
+    /// A strip that cannot hold the declared samples is a truncated file, refused as corrupt
+    /// instead of unpacked: `unpack_msb` would otherwise run `n` samples through the few real
+    /// bytes, filling the rest from nothing.
+    #[test]
+    fn a_strip_too_short_for_the_declared_samples_is_refused() {
+        let px: Vec<u16> = (0..16 * 6).map(|i| (i * 41 % 4096) as u16).collect();
+        let f = sample(16, 6, &px);
+        assert!(crate::decode(&f).is_ok());
+        // A truncated file shaped like a real one: IFD tables first, strip last — only its first
+        // 20 packed bytes remain, while the IFD still declares the full 1.5 B/sample length. The
+        // probe accepts the file on the declared length; before the byte gate below, `unpack_msb`
+        // ran the dimension-sized allocation through those 20 bytes, filling it from nothing.
+        let u32be = |b: &[u8], a: usize| u32::from_be_bytes([b[a], b[a + 1], b[a + 2], b[a + 3]]);
+        let full = pack(&px);
+        let at = f.windows(full.len()).position(|w| w == full).expect("strip bytes in the file");
+        let after_strip = at + full.len();
+        let moved = after_strip - (at + 20);
+        let mut g = f[..8].to_vec();
+        g.extend(std::iter::repeat_n(0u8, at + 20 - 8));
+        g.extend_from_slice(&f[after_strip..]);
+        // repoint the first-IFD pointer and ifd0's MAKE / MODEL / SubIfds offsets (the tables now
+        // sit `moved` earlier); the raw sub-IFD's strip offset and byte count are patched below
+        let poke = |b: &mut [u8], a: usize| {
+            let v = u32::from_be_bytes([b[a], b[a + 1], b[a + 2], b[a + 3]]);
+            if v as usize >= after_strip {
+                b[a..a + 4].copy_from_slice(&(v - moved as u32).to_be_bytes());
+            }
+        };
+        let ifd0_at = u32be(&g, 4) as usize - moved;
+        g[4..8].copy_from_slice(&(ifd0_at as u32).to_be_bytes());
+        let n = u16::from_be_bytes([g[ifd0_at], g[ifd0_at + 1]]) as usize;
+        for i in 0..n {
+            poke(&mut g, ifd0_at + 2 + i * 12 + 8);
+        }
+        // the raw sub-IFD: entries follow its count; tag 273 (StripOffsets) is the seventh, held
+        // inline — repoint it at the strip's new home, and append the truncated strip for real
+        let sub_at = u32be(&g, ifd0_at + 2 + 2 * 12 + 8) as usize;
+        let e_offsets = sub_at + 2 + 6 * 12 + 8;
+        let strip_at = g.len() as u32;
+        g[e_offsets..e_offsets + 4].copy_from_slice(&strip_at.to_be_bytes());
+        g.extend_from_slice(&full[..20]);
+        assert_eq!(crate::probe(&g), Some(RawFormat::Mef));
+        let r = crate::decode(&g);
+        assert!(matches!(r, Err(RawError::Corrupt(_))), "{r:?}");
+    }
+
     #[test]
     fn decodes_packed_12_bit() {
         let px: Vec<u16> = (0..16 * 6).map(|i| (i * 41 % 4096) as u16).collect();
diff --git a/crates/raw/src/wb_estimate.rs b/crates/raw/src/wb_estimate.rs
index 17a86a2a5..13cb9f8da 100644
--- a/crates/raw/src/wb_estimate.rs
+++ b/crates/raw/src/wb_estimate.rs
@@ -66,7 +66,7 @@ fn median(v: &mut [f64]) -> Option<f64> {
 
 fn from_preview(bytes: &[u8], f: &Frame) -> Option<[f32; 3]> {
     let jpeg = crate::preview::embedded_preview(bytes)?;
-    let (px, pw, ph, ch) = crate::tiffraw::lossy_jpeg(&jpeg, 3).ok()?;
+    let (px, pw, ph, ch) = crate::tiffraw::lossy_jpeg(&jpeg, 3, crate::tiffraw::MAX_JPEG_SAMPLES).ok()?;
     if ch != 3 {
         return None;
     }
diff --git a/crates/tiff/src/image.rs b/crates/tiff/src/image.rs
index ca3ff8b69..16e24f367 100644
--- a/crates/tiff/src/image.rs
+++ b/crates/tiff/src/image.rs
@@ -118,14 +118,34 @@ impl ImageInfo {
         }
     }
 
-    /// All chunks that have an offset. Missing byte counts are inferred as "to the next offset / end of data"
-    /// using `data_len`.
-    pub fn chunks(&self, data_len: u64) -> Vec<Chunk> {
+    /// The chunk count the image declares (offsets present, cut to the layout's plane capacity) with the
+    /// geometry `chunks` needs to place each one. No descriptors are built, so a pathological strip array
+    /// costs it a length check.
+    fn chunk_grid(&self) -> (usize, u32, usize) {
         let (across, down) = self.grid();
         let per_plane = across as usize * down as usize;
         let planes = if self.planar == 2 { self.samples_per_pixel as usize } else { 1 };
+        (self.offsets.len().min(per_plane.saturating_mul(planes)), across, per_plane)
+    }
+
+    fn declared_chunk_count(&self) -> usize {
+        self.chunk_grid().0
+    }
+
+    /// The one chunk when the image has exactly one, else `None` — and no descriptor vector beyond it. Preview
+    /// extraction only serves single-chunk images, so it asks here before serving a hostile multi-strip layout.
+    pub fn single_chunk(&self, data_len: u64) -> Option<Chunk> {
+        if self.declared_chunk_count() != 1 {
+            return None;
+        }
+        self.chunks(data_len).into_iter().next()
+    }
+
+    /// All chunks that have an offset. Missing byte counts are inferred as "to the next offset / end of data"
+    /// using `data_len`.
+    pub fn chunks(&self, data_len: u64) -> Vec<Chunk> {
+        let (n, across, per_plane) = self.chunk_grid();
         let (cw, ch) = self.chunk_size();
-        let n = self.offsets.len().min(per_plane.saturating_mul(planes));
         let mut out = Vec::with_capacity(n);
         // the distinct offsets in order, for chunks without a byte count (sorted once, not scanned per chunk)
         let mut sorted: Vec<u64> = Vec::new();
@@ -192,6 +212,18 @@ mod tests {
         }
     }
 
+    /// One offset is one chunk, and `single_chunk` refuses to build descriptors when the image declares more.
+    #[test]
+    fn single_chunk_is_the_only_chunk() {
+        let one = strips(vec![50], vec![10]);
+        assert_eq!(one.single_chunk(100).map(|c| (c.index, c.offset, c.len)), one.chunks(100).first().map(|c| (c.index, c.offset, c.len)));
+        // the inferred length matches too, and never falls back past the data
+        let inferred = strips(vec![70], vec![]);
+        assert_eq!(inferred.single_chunk(100).map(|c| c.len), Some(30));
+        assert!(strips(vec![50, 10], vec![10, 5]).single_chunk(100).is_none(), "a multi-chunk image has no single chunk");
+        assert!(strips(Vec::new(), Vec::new()).single_chunk(100).is_none());
+    }
+
     #[test]
     fn missing_byte_counts_run_to_the_next_larger_offset() {
         let info = strips(vec![50, 10, 30, 10, 70], vec![0, 0, 5]);
diff --git a/crates/tiff/src/makernote.rs b/crates/tiff/src/makernote.rs
index 7ed5e1997..288b366f6 100644
--- a/crates/tiff/src/makernote.rs
+++ b/crates/tiff/src/makernote.rs
@@ -55,7 +55,11 @@ pub fn parse_makernote(data: &[u8], offset: u64, len: u64, order: ByteOrder, mak
         Some(b"MM") => Some(ByteOrder::Big),
         _ => None,
     };
-    let opts = ParseOptions { max_ifds: 64, max_depth: 3, ..Default::default() };
+    // A fixed value budget: a maker note is at most tens of kilobytes of values in any honest file, and
+    // computing the budget from the buffer's length multiplies the file length (a hostile entry in a
+    // sparse header-read buffer, where the buffer holds the file's logical size but only a few
+    // kilobytes are loaded, would decode allocations no actual data backs).
+    let opts = ParseOptions { max_ifds: 64, max_depth: 3, value_budget: Some(1 << 20), ..Default::default() };
     let try_parse = |kind: MakerNoteKind, ifd_at: u64, base: u64, ord: ByteOrder| -> Option<MakerNote> {
         let (ifd, _) = parse_ifd_at(data, ifd_at, ord, base, false, &opts).ok()?;
         (!ifd.entries.is_empty()).then_some(MakerNote { kind, order: ord, base, ifd })
@@ -192,6 +196,35 @@ mod tests {
         assert_eq!(m.ifd.u64s(2).unwrap(), vec![9, 0]);
     }
 
+    /// A maker note's value budget is fixed, not computed from the length of the buffer it sits in:
+    /// an entry claiming more than the note budget (here 2 MB) is dropped, a fitting one is read. In a
+    /// sparse header read the buffer holds the file's logical size while only kilobytes were loaded,
+    /// so a length-scaled budget would let an unrelated entry decode megabytes of zeros (see the focus
+    /// reader, try_read_exif_with).
+    #[test]
+    fn a_note_entry_past_the_fixed_value_budget_is_dropped() {
+        let order = ByteOrder::Little;
+        let mut note = b"SONY DSC \0\0\0".to_vec();
+        // the Sony IFD directly after the 12-byte header, one fitting BYTE entry and a decoy
+        // BYTE[2 MB] entry pointing into the file's own (zero-filled) body
+        order.put_u16(&mut note, 2);
+        order.put_u16(&mut note, 0x201b);
+        order.put_u16(&mut note, 1);
+        order.put_u32(&mut note, 1);
+        note.extend([3, 0, 0, 0]);
+        order.put_u16(&mut note, 0x9900);
+        order.put_u16(&mut note, 1);
+        order.put_u32(&mut note, 2 << 20);
+        order.put_u32(&mut note, 200);
+        order.put_u32(&mut note, 0);
+        let mut bytes = note.clone();
+        bytes.resize(200 + (2 << 20), 0); // the decoy's value range is inside the real bytes
+        let m = parse_makernote(&bytes, 0, note.len() as u64, order, "SONY").unwrap();
+        assert_eq!(m.kind, MakerNoteKind::Sony);
+        assert!(m.ifd.get(0x201b).is_some(), "the fitting entry is read");
+        assert!(m.ifd.get(0x9900).is_none(), "the decoy is dropped by the value budget");
+    }
+
     #[test]
     fn garbage_note_is_none() {
         let (bytes, off, len) = with_note(ByteOrder::Little, vec![0xff; 40]);
diff --git a/crates/tiff/src/reader.rs b/crates/tiff/src/reader.rs
index bd728ca9c..70c66c5a7 100644
--- a/crates/tiff/src/reader.rs
+++ b/crates/tiff/src/reader.rs
@@ -338,6 +338,25 @@ pub fn decode(o: ByteOrder, typ: FieldType, b: &[u8]) -> Value {
 #[cfg(test)]
 mod tests {
     use super::*;
+    use crate::Value;
+    use crate::tags as t;
+    use crate::writer::{IfdBuilder, TiffWriter};
+
+    /// A value budget the caller sets bounds what is decoded: an entry claiming more value bytes than
+    /// the budget allows is dropped, entries that fit are read (the sparse header-read path, where the
+    /// buffer holds the file's logical size but only a few kilobytes were ever loaded, sizes its
+    /// budget from what was fetched, not from whatever length the file claims).
+    #[test]
+    fn the_value_budget_drops_over_budget_entries_and_keeps_the_rest() {
+        let mut ifd0 = IfdBuilder::new();
+        ifd0.set(t::MAKE, Value::Ascii("Keep".into()));
+        ifd0.set(0x9000, Value::Byte(vec![0; 2 << 20]));
+        let file = TiffWriter { order: ByteOrder::Little, bigtiff: false }.write(&[ifd0]).unwrap();
+        let opts = ParseOptions { value_budget: Some(1 << 20), ..Default::default() };
+        let tiff = Tiff::parse_with(&file, &opts).unwrap();
+        assert_eq!(tiff.ifds[0].string(t::MAKE), Some("Keep".to_string()), "a fitting entry is read");
+        assert!(tiff.ifds[0].get(0x9000).is_none(), "the over-budget entry is dropped");
+    }
 
     /// A BigTIFF whose first IFD, at 80, declares `declared` entries but holds one, followed by a next-IFD pointer
     /// `next`; a valid one-entry IFD sits at 16.
diff --git a/crates/ui-egui/Cargo.toml b/crates/ui-egui/Cargo.toml
index 7bc523653..8e7b77f42 100644
--- a/crates/ui-egui/Cargo.toml
+++ b/crates/ui-egui/Cargo.toml
@@ -45,3 +45,6 @@ lightcraft-merge = { workspace = true }
 [build-dependencies]
 serde_json = { workspace = true }
 toml = "1"
+
+[target.'cfg(not(target_arch = "wasm32"))'.dependencies]
+craft-update = { workspace = true }
diff --git a/crates/ui-egui/src/lib.rs b/crates/ui-egui/src/lib.rs
index a39fdda5c..e53989fca 100644
--- a/crates/ui-egui/src/lib.rs
+++ b/crates/ui-egui/src/lib.rs
@@ -49,6 +49,7 @@ pub mod sync;
 pub mod tasks;
 pub mod text_field;
 pub mod theme;
+pub mod updates_ui;
 pub mod widgets;
 pub mod window_place;
 
@@ -410,6 +411,7 @@ pub struct LightcraftApp {
     pub headless_host: bool,
     /// Warnings to show one at a time (damaged settings files…, issue #103).
     pub notices: Vec<String>,
+    pub(crate) updates_rt: updates_ui::Runtime,
     /// Quitting was stopped to ask first: changes couldn't be saved, or tasks are running.
     pub quit_prompt: Option<QuitPrompt>,
     /// Keyboard/focus/input state for the prompt above, including its one-frame creation barrier.
@@ -617,6 +619,7 @@ impl LightcraftApp {
             text_focus: false,
             headless_host: false,
             notices: vec![],
+            updates_rt: Default::default(),
             quit_prompt: None,
             notice_input: Default::default(),
             quit_confirmed: false,
@@ -1968,6 +1971,7 @@ impl LightcraftApp {
         lightroom_import::tick(self, ctx);
         recheck::tick(self);
         tasks::poll(self, ctx);
+        updates_ui::tick(self, ctx);
         self.preview_build_status(ctx);
         self.save_status(ctx);
         self.ai_mask_detail(ctx, now);
@@ -2125,7 +2129,7 @@ impl LightcraftApp {
         // Recent-library checks and launch-list keys read focus/time/keys: they belong to the UI
         // phase, not the hidden-capable `logic` tick (plan §4.5 / migration input contract).
         panels::library_problem::logic(self, ctx);
-        if self.fonts_ready {
+        if self.fonts_ready && !updates_ui::blocks_input(self) {
             shortcuts::handle(self, ctx);
         }
     }
@@ -2628,6 +2632,7 @@ impl LightcraftApp {
                 panels::notices::hide_background_pointer(&ctx);
             }
             panels::dialogs::show(self, &ctx, notice_blocks);
+            updates_ui::show(self, &ctx);
             panels::library_problem::show(self, &ctx, notice_blocks);
             panels::toast(self, &ctx);
             drop_overlay::show(self, &ctx);
@@ -2658,6 +2663,7 @@ impl LightcraftApp {
             panels::notices::hide_background_pointer(&ctx);
         }
         panels::dialogs::show(self, &ctx, notice_blocks);
+        updates_ui::show(self, &ctx);
         panels::library_problem::show(self, &ctx, notice_blocks);
         export_task::poll(self, &ctx);
         slideshow_export::poll(self, &ctx);
diff --git a/crates/ui-egui/src/menubar.rs b/crates/ui-egui/src/menubar.rs
index 9b3d88036..ba4a8a7c2 100644
--- a/crates/ui-egui/src/menubar.rs
+++ b/crates/ui-egui/src/menubar.rs
@@ -322,6 +322,7 @@ const LAYOUT: &[(&str, &[&str])] = &[
             "app.systemInfo",
             "app.openLogFolder",
             "---",
+            "app.checkForUpdates",
             "app.about",
         ],
     ),
diff --git a/crates/ui-egui/src/menus.rs b/crates/ui-egui/src/menus.rs
index 03841d14a..84ec8ae0c 100644
--- a/crates/ui-egui/src/menus.rs
+++ b/crates/ui-egui/src/menus.rs
@@ -263,6 +263,7 @@ pub const UI_COMMANDS: &[UiCommand] = &[
     // Settings ▸ Display
     ("app.displayProfile", "Display Profile", None, ""),
     ("app.about", "About LightCraft", None, "Help"),
+    ("app.checkForUpdates", "Check for Updates…", None, "Help"),
     ("app.systemInfo", "System Info…", None, "Help"),
     ("app.openLogFolder", "Open Log Folder", None, "Help"),
     // the frame-rate display (`frame_rate`): a debugging aid, never saved
@@ -1587,6 +1588,7 @@ pub fn run_ui_command(app: &mut LightcraftApp, id: &str, p: &Value) -> Option<Re
             app.ui.dialog = Some(Dialog::About);
             Ok(Value::Null)
         }
+        "app.checkForUpdates" => crate::updates_ui::check(app),
         "photo.editInPhotoCraft" => edit_in(app, &ctx, p, true),
         "photo.editInExternal" => edit_in(app, &ctx, p, false),
         "photo.openOriginalInExternal" => open_original_in(app, &ctx, p),
diff --git a/crates/ui-egui/src/updates_ui.rs b/crates/ui-egui/src/updates_ui.rs
new file mode 100644
index 000000000..5e159a0f4
--- /dev/null
+++ b/crates/ui-egui/src/updates_ui.rs
@@ -0,0 +1,188 @@
+//! Software updates, background check at startup, and startup prompt modal.
+
+use serde_json::Value;
+
+use crate::LightcraftApp;
+
+#[cfg(not(target_arch = "wasm32"))]
+use craft_update::updater::{Action, Status, Updater};
+
+pub(crate) struct Runtime {
+    #[cfg(not(target_arch = "wasm32"))]
+    updater: Updater,
+    /// The desktop app turns the check at start on; tests and the web build leave it off.
+    #[cfg(not(target_arch = "wasm32"))]
+    startup_check: bool,
+    #[cfg(not(target_arch = "wasm32"))]
+    check_requested: bool,
+    /// The context of the last frame, to wake the UI when a check is queued from a menu callback.
+    #[cfg(not(target_arch = "wasm32"))]
+    repaint: Option<egui::Context>,
+    pub(crate) manual_window_open: bool,
+    pub(crate) status_message: Option<String>,
+}
+
+impl Default for Runtime {
+    fn default() -> Self {
+        Self {
+            #[cfg(not(target_arch = "wasm32"))]
+            updater: Updater::new(&craft_update::suite::LIGHTCRAFT, env!("CARGO_PKG_VERSION")),
+            #[cfg(not(target_arch = "wasm32"))]
+            startup_check: false,
+            #[cfg(not(target_arch = "wasm32"))]
+            check_requested: false,
+            #[cfg(not(target_arch = "wasm32"))]
+            repaint: None,
+            manual_window_open: false,
+            status_message: None,
+        }
+    }
+}
+
+impl LightcraftApp {
+    /// Whether the app asks for a newer release when it starts (off until the desktop app turns it on).
+    #[cfg(not(target_arch = "wasm32"))]
+    pub fn set_startup_update_check(&mut self, on: bool) {
+        self.updates_rt.startup_check = on;
+    }
+}
+
+/// The update prompt owns the keyboard while it is open: shortcuts must not reach the library behind it.
+pub(crate) fn blocks_input(app: &LightcraftApp) -> bool {
+    #[cfg(not(target_arch = "wasm32"))]
+    {
+        app.updates_rt.updater.prompt_open()
+    }
+    #[cfg(target_arch = "wasm32")]
+    {
+        let _ = app;
+        false
+    }
+}
+
+pub(crate) fn check(app: &mut LightcraftApp) -> Result<Value, String> {
+    #[cfg(not(target_arch = "wasm32"))]
+    {
+        app.updates_rt.check_requested = true;
+        if let Some(ctx) = &app.updates_rt.repaint {
+            ctx.request_repaint();
+        }
+        Ok(Value::Null)
+    }
+    #[cfg(target_arch = "wasm32")]
+    {
+        app.updates_rt.manual_window_open = true;
+        app.updates_rt.status_message = Some("Update check is not supported in the web browser.".into());
+        Ok(Value::Null)
+    }
+}
+
+pub(crate) fn tick(app: &mut LightcraftApp, ctx: &egui::Context) {
+    #[cfg(not(target_arch = "wasm32"))]
+    {
+        let rt = &mut app.updates_rt;
+        rt.repaint = Some(ctx.clone());
+        if std::mem::take(&mut rt.check_requested) {
+            rt.updater.check_now(ctx);
+        } else if rt.startup_check {
+            rt.updater.check_at_start(ctx);
+        }
+        rt.updater.tick(ctx);
+    }
+    #[cfg(target_arch = "wasm32")]
+    let _ = (app, ctx);
+}
+
+pub(crate) fn show(app: &mut LightcraftApp, ctx: &egui::Context) {
+    #[cfg(not(target_arch = "wasm32"))]
+    {
+        // The restart helper is scheduled before the app closes, so no update starts over unsaved work.
+        let clean = app.session.unsaved().is_none();
+        match app.updates_rt.updater.show_if(ctx, clean) {
+            Action::OpenUrl(url) => ctx.open_url(egui::OpenUrl::new_tab(url)),
+            Action::Close => ctx.send_viewport_cmd(egui::ViewportCommand::Close),
+            Action::None => {}
+        }
+        // The window answers Help ▸ Check for Updates, so it follows the updater's status.
+        let rt = &mut app.updates_rt;
+        (rt.manual_window_open, rt.status_message) = match rt.updater.status() {
+            Status::Idle => (false, None),
+            Status::Checking => (true, Some(crate::i18n::tr("Checking for updates…").to_string())),
+            Status::UpToDate => (
+                true,
+                Some(
+                    crate::i18n::tr("LightCraft {version} is currently the newest version available.")
+                        .replace("{version}", env!("CARGO_PKG_VERSION")),
+                ),
+            ),
+            Status::Failed(e) => (true, Some(crate::i18n::tr("Could not check for updates:\n{error}").replace("{error}", e))),
+        };
+    }
+
+    if app.updates_rt.manual_window_open {
+        let mut open = true;
+        egui::Window::new(crate::i18n::tr("LightCraft Updates"))
+            .open(&mut open)
+            .collapsible(false)
+            .resizable(false)
+            .pivot(egui::Align2::CENTER_CENTER)
+            .default_pos(ctx.content_rect().center())
+            .show(ctx, |ui| {
+                if let Some(msg) = &app.updates_rt.status_message {
+                    ui.label(msg);
+                }
+                ui.add_space(8.0);
+                if ui.button(crate::i18n::tr("OK")).clicked() {
+                    app.updates_rt.manual_window_open = false;
+                }
+            });
+        if !open {
+            app.updates_rt.manual_window_open = false;
+        }
+    }
+
+    // Closing the window dismisses the outcome it showed.
+    #[cfg(not(target_arch = "wasm32"))]
+    if !app.updates_rt.manual_window_open {
+        app.updates_rt.updater.dismiss_status();
+    }
+}
+
+#[cfg(test)]
+mod tests {
+    use super::*;
+    use lightcraft_engine::Session;
+
+    #[test]
+    fn default_runtime_is_idle() {
+        let rt = Runtime::default();
+        assert!(!rt.manual_window_open);
+        #[cfg(not(target_arch = "wasm32"))]
+        {
+            assert!(!rt.startup_check);
+            assert!(!rt.updater.prompt_open());
+            assert_eq!(rt.updater.status(), &Status::Idle);
+        }
+    }
+
+    #[test]
+    #[cfg(not(target_arch = "wasm32"))]
+    fn startup_prompt_shows_and_closes() {
+        let mut app = LightcraftApp::new(Session::new(), Default::default());
+        let ctx = egui::Context::default();
+        let release = craft_update::Release {
+            tag: "v99.0.0".into(),
+            version: craft_update::parse_version("99.0.0"),
+            name: "LightCraft 99.0.0".into(),
+            html_url: "https://github.com/storytold/lightcraft/releases/tag/v99.0.0".into(),
+            ..Default::default()
+        };
+        app.updates_rt.updater.offer(release);
+
+        let mut output = ctx.run_ui(egui::RawInput::default(), |ui| {
+            show(&mut app, ui.ctx());
+        });
+        output.textures_delta.clear();
+        assert!(app.updates_rt.updater.prompt_open());
+    }
+}
diff --git a/docs/showcase/__pycache__/run.cpython-314.pyc b/docs/showcase/__pycache__/run.cpython-314.pyc
new file mode 100644
index 000000000..de0f9a97e
Binary files /dev/null and b/docs/showcase/__pycache__/run.cpython-314.pyc differ
diff --git a/docs/showcase/run.py b/docs/showcase/run.py
index 828f8decc..05de581af 100644
--- a/docs/showcase/run.py
+++ b/docs/showcase/run.py
@@ -14,8 +14,7 @@ def _jsonl_path(arg):
     if not path.is_file():
         sys.exit(f"not a readable file: {arg}")
     try:
-        with path.open("rb"):
-            pass
+        path.open("rb").close()
     except OSError:
         sys.exit(f"not a readable file: {arg}")
     return path
diff --git a/xtask/Cargo.toml b/xtask/Cargo.toml
index 0f1b1f77d..c68c7dca2 100644
--- a/xtask/Cargo.toml
+++ b/xtask/Cargo.toml
@@ -14,4 +14,4 @@ serde_json = { workspace = true }
 sha2 = { workspace = true }
 # precompressed web bundle (`cargo xtask web`); pure Rust
 flate2 = "1"
-brotli = { version = "8", default-features = false, features = ["std"] }
+brotli = { version = "9", default-features = false, features = ["std"] }