app icon: lion (owner's ArtCraft drawing), Dock/taskbar/launcher wiring, palette docs

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

packaging/icons.sh

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+#!/usr/bin/env bash
+# Regenerate every app icon from assets/app-icon/printcraft.svg (the master vector).
+#
+# Needs: resvg (brew install resvg / cargo install resvg) and python3 (stdlib only, for the .ico).
+# On macOS, iconutil also writes the .icns. The outputs are committed, so building and packaging
+# never need these tools. After running it, update the sha256 values in ATTRIBUTION.toml, then
+# `cargo xtask assets --write`.
+#
+#   packaging/icons.sh
+set -euo pipefail
+ROOT="$(cd "$(dirname "${BASH_SOURCE[0]}")/.." && pwd)"
+DIR="$ROOT/assets/app-icon"
+SVG="$DIR/printcraft.svg"
+ID="ai.storyteller.printcraft"
+TMP="$(mktemp -d)"
+trap 'rm -rf "$TMP"' EXIT
+
+command -v resvg >/dev/null || { echo "error: resvg not found (brew install resvg)" >&2; exit 1; }
+
+# The master is a full-bleed 512 tile (rx=112): right for Windows and Linux. macOS icons follow
+# Apple's grid instead: an 824 px body centred on a transparent 1024 canvas.
+MAC="$TMP/macos.svg"
+{
+  echo '<svg xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink" viewBox="0 0 1024 1024">'
+  echo '<image x="100" y="100" width="824" height="824" xlink:href="'"$SVG"'"/>'
+  echo '</svg>'
+} >"$MAC"
+
+render() { resvg -w "$2" -h "$2" "$1" "$3" </dev/null; }
+
+# 1024 px PNG on Apple's grid (also the runtime Dock icon on macOS, see apps/printcraft/src/main.rs).
+render "$MAC" 1024 "$DIR/printcraft-1024.png"
+
+# Linux hicolor theme (full bleed; hicolor/256x256 is also the runtime icon on Windows and Linux).
+for s in 16 24 32 48 64 128 256 512; do
+  mkdir -p "$DIR/hicolor/${s}x${s}/apps"
+  render "$SVG" "$s" "$DIR/hicolor/${s}x${s}/apps/$ID.png"
+done
+mkdir -p "$DIR/hicolor/scalable/apps"
+cp "$SVG" "$DIR/hicolor/scalable/apps/$ID.svg"
+
+# Windows .ico: PNG-compressed entries, 16-256 px.
+ICO_PNGS=()
+for s in 16 20 24 32 40 48 64 128 256; do
+  render "$SVG" "$s" "$TMP/ico-$s.png"
+  ICO_PNGS+=("$TMP/ico-$s.png")
+done
+python3 - "$DIR/printcraft.ico" "${ICO_PNGS[@]}" <<'PY'
+import struct, sys
+out, pngs = sys.argv[1], sys.argv[2:]
+blobs = [open(p, "rb").read() for p in pngs]
+head = struct.pack("<HHH", 0, 1, len(blobs))
+entries, data, offset = b"", b"", 6 + 16 * len(blobs)
+for b in blobs:
+    w, h = struct.unpack(">II", b[16:24])  # IHDR
+    entries += struct.pack("<BBBBHHII", w % 256, h % 256, 0, 0, 1, 32, len(b), offset)
+    data += b
+    offset += len(b)
+open(out, "wb").write(head + entries + data)
+PY
+
+# macOS .icns.
+if command -v iconutil >/dev/null; then
+  SET="$TMP/printcraft.iconset"
+  mkdir -p "$SET"
+  for s in 16 32 128 256 512; do
+    render "$MAC" "$s" "$SET/icon_${s}x${s}.png"
+    render "$MAC" $((s * 2)) "$SET/icon_${s}x${s}@2x.png"
+  done
+  iconutil -c icns -o "$DIR/printcraft.icns" "$SET"
+else
+  echo "warning: iconutil not found (macOS only); printcraft.icns not regenerated" >&2
+fi
+echo "icons written to $DIR"

packaging/linux/ai.storyteller.printcraft.desktop

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+[Desktop Entry]
+Type=Application
+Name=PrintCraft
+GenericName=PDF Editor
+Comment=Read, organize, combine, split and secure PDFs
+Exec=printcraft %F
+TryExec=printcraft
+Icon=ai.storyteller.printcraft
+Terminal=false
+StartupNotify=true
+StartupWMClass=printcraft
+Categories=Office;Viewer;Graphics;
+Keywords=pdf;viewer;editor;annotate;sign;forms;merge;split;
+MimeType=application/pdf;