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BFlatandClaude Opus 5.5 4924512f4e M9: collaboration core: ids, change sets, server ordering, convergence (#103)
* M9: real-time collaboration protocol (design)

docs/collab-protocol.md: WebSocket sessions with a server-ordered,
per-property last-writer-wins document sync, client-scoped ids,
fractional positions for children, ephemeral presence (cursors,
selections, follow), per-user undo, hosting from the app first and a
self-hosted server next, and the implementation plan. ROADMAP gains M9.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

* M9: collaboration core: ids, change sets, server ordering, convergence

Step 1 of docs/collab-protocol.md, no networking:

- Client-scoped node ids: Document::set_client_id makes alloc_id hand out
  client << 32 | counter; single-user files allocate as before; the id
  counter is no longer part of document equality.
- crates/collab (layer 2): the synced object/property model (every saved
  Node field, plus document-level styles, comments, variables, images,
  dev snapshots, library data), Change batches, an O(changed) diff, strict
  and lenient apply, fractional sibling positions, snapshots.
- Server (ordering, validation, rejects with fixes) and Client (optimistic
  view, replay under remote batches, author-side repair of derived data)
  as pure state machines; binary (version byte + postcard, JSON values) and
  JSON message forms, fuzzed decoders.
- Engine: normalize as the recompute hook, collab.diff.
- Tests: round trips over random real commands, an N-client convergence
  fuzz test over delayed in-order links, junk batches.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

* M9: fmt after merge

---------

Co-authored-by: Claude Opus 5.5 <noreply@anthropic.com>
2026-10-11 01:03:03 +07:00

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[workspace]
resolver = "3"
members = ["crates/*", "apps/*", "xtask"]
# The plugin SDK and examples build for wasm32 in a workspace of their own (`cargo xtask plugins`).
exclude = ["plugins"]
# default-members = ["crates/*", "apps/figcraft", "apps/figcraft-cli", "xtask"]
[workspace.package]
version = "0.2.0"
edition = "2024"
license = "MIT OR Apache-2.0"
rust-version = "1.95"
repository = "https://github.com/storytold/figcraft"
[workspace.dependencies]
# internal
figcraft-geom = { path = "crates/geom" }
figcraft-color = { path = "crates/color" }
figcraft-doc = { path = "crates/doc" }
figcraft-layout = { path = "crates/layout" }
figcraft-text = { path = "crates/text" }
figcraft-pathops = { path = "crates/pathops" }
figcraft-render = { path = "crates/render" }
figcraft-svg = { path = "crates/svg" }
figcraft-pdf = { path = "crates/pdf" }
figcraft-format = { path = "crates/format" }
figcraft-tools = { path = "crates/tools" }
figcraft-collab = { path = "crates/collab" }
figcraft-engine = { path = "crates/engine" }
figcraft-ui-egui = { path = "crates/ui-egui" }
figcraft-mcp = { path = "crates/mcp" }
figcraft-plugin = { path = "crates/plugin" }
# foundation
kurbo = { version = "0.13", features = ["serde"] }
thiserror = "2"
serde = { version = "1", features = ["derive", "rc"] }
serde_json = { version = "1", features = ["float_roundtrip"] }
log = "0.4"
proptest = "1"
imbl = { version = "7", features = ["serde"] }
postcard = { version = "1", default-features = false, features = ["alloc"] }
# rendering / formats
tiny-skia = "0.12"
image = { version = "0.25", default-features = false, features = ["png", "jpeg", "webp", "gif", "bmp"] }
usvg = "0.48"
krilla = "0.8"
skrifa = "0.47"
harfrust = "0.13"
unicode-bidi = "0.3"
linesweeper = "0.4"
zip = { version = "2", default-features = false, features = ["deflate"] }
sha2 = "0.10"
base64 = "0.22"
crc32fast = "1"
# plugins: a pure-Rust, metered WebAssembly interpreter (no JIT; also runs in the web build). The
# portable dispatch loop: tail-call dispatch relies on an LLVM optimisation that unoptimised and
# debug builds may not do, and then a long-running plugin overflows the native stack.
wasmi = { version = "2", default-features = false, features = ["std", "stable", "validate", "portable-dispatch"] }
wat = "1.261"
# ui
egui = "0.36"
egui_extras = { version = "0.36", default-features = false }
eframe = { version = "0.36", default-features = false }
rfd = "0.17"
arboard = { version = "3.6", default-features = false }
webbrowser = "1"
[workspace.lints.rust]
unsafe_code = "forbid"
[workspace.lints.clippy]
dbg_macro = "warn"
# Style lints from newer toolchains that fight index-heavy pixel code.
needless_range_loop = "allow"
chunks_exact_to_as_chunks = "allow"
# FigCraft never crashes: shipped code returns `Result`/`Option` instead of panicking (see
# AGENTS.md › Never crash). Tests may unwrap (clippy.toml).
unwrap_used = "deny"
expect_used = "deny"
panic = "deny"
todo = "deny"
unimplemented = "deny"
unreachable = "deny"
[profile.dev.package."*"]
opt-level = 2
[profile.dev]
opt-level = 1
[profile.release]
lto = "thin"
codegen-units = 4