v0.3.0

Implements Synod 0.3 (themes, richer drawing).

Added

• Scene format 0.3, read by the rules of the formats guide: the top-level style and camera; the kinds icon (the 16-icon set, src/render/icons.json, checked against dsl by scripts/sync-icons.ts) and counter (rolling digits); the key properties curve, trail, dash, draw, halo, icon, count, role and face; the effects indicate, flash, circumscribe, ripple and sweep. Old 0.2 scenes load unchanged.
• Style: stroke width, glow, drop shadow, vignette (drawn last, in canvas space), type roles and faces with sizes, weights and tracking, spring easing for x, y, scale, rotation and the camera, camera keys with idle drift (hit testing inverts letterbox, camera and drift).
• Sketch: every outline wobbles by a seeded value noise (FNV-1a-32 of the shape id, mulberry32, smoothstep), twice at alpha 1 and 0.6; stable in time, cached per shape.
• Trails (8 ghosts), Bezier curves, dashes, partial draw, halo, icon morph.
• Fonts: the closed set Inter, JetBrains Mono, Source Serif 4 and Shantell Sans (SIL OFL 1.1, variable woff2, sources and checksums in fonts/README.md), the release asset synod-player-fonts-<tag>.tar.gz, options.fontBase and player.fontsReady().
• Hit testing also answers icons and counters (like a filled shape).
• Tests: hand-made scenes for every new key, kind, effect and style value, display-list and WebKit pixel goldens for them, the compiler's 0.3 scenes, and a 50-node, 200-message stress scene with sketch 1 and trails (JS frame work p99 under 4 ms).

Fixed

• Counter: a column of 100s or more rolled by the wrong amount (the whole number 199 drew the hundreds column 0.9 of the way to 2). Column k now rolls by max(0, (|count| mod 10^k) - (10^k - 1)), as the formats guide says, so a whole number draws crisp.

Changed

• Example scenes, frame and hit goldens, and the markers, paxos and raft pixel snapshots follow the lesson note in the top band (y 40) and paxos writing its state to disk.
• The vendored scenes follow the compiler's wider ring (layout centre (520, 315)) and 24-character state rows; the builder scene state-rows-long is new, and the goldens and the WebKit snapshots of the scenes that changed are regenerated.
• The default sans is Inter (was the system font). Every display-list golden differs only in its font = ... line; the WebKit pixel snapshots are regenerated.
• A counter column rolls only while the column below is on its last digit (an odometer), so a whole number is drawn crisp.
• The bundle budget is 96 KB minified and 32 KB gzip (was 48 KB and 16 KB): the icon set and the new drawing code.
• The player redraws the last drawn time, not the clock, when fonts finish loading.

v0.2.1

Implements Synod 0.2.

Added

• player.hitTest(x, y) and player.nodeBounds(), plus hitTestScene and nodeBoundsScene for any host. A hit is the topmost drawn circle or rect whose own or enclosing group's node or msg is set, with 4 px slop; labels and lines never hit. Rules: decision 84 and "Hit testing (readers)" in the formats guide.
• The loader keeps the new additive keys node and msg on shapes and choices on pause markers, and drops an invalid one with a warning. Marker events, including those posted by the WebKit bridge, carry choices. Older scenes load as before and never hit. Drawing is unchanged: the display-list goldens are byte-identical.
• The vendored scenes are re-synced from compiler v0.2.5, so they now carry node, msg and pause choices; the hit goldens in test/golden/hits are filled in from them.

v0.2.0

Implements Synod 0.2.

Added

• The player reads synod-scene/1 files and draws them on a canvas: circles, rounded rectangles, labels, lines and groups, with per-property keyframes, smootherstep easing, OKLab colour blending, group transforms, glow, and fit-and-letterbox on the Paper ground. It follows the reader rules in the Synod formats guide, and the same scene always draws the same frames.
• API: loadScene, compileScene, renderToContext (draw into any 2D context, for example an OffscreenCanvas for video export) and createPlayer. A player has play, pause, toggle, seek, setRate (0.25x to 4x), setLoop, setStopAtPause (Predict mode), nextFact, prevFact, factAt, timeOfSeq, setScene, resize, renderFrame(at) and destroy, and the events time, marker, fact, play, pause and scene.
• attachWebKitBridge posts player events to a WKWebView script message handler, and the IIFE build adds SynodPlayer.mount(selector, options) for Swift to call.
• Release assets: synod-player-<tag>.js (ES module), synod-player-<tag>.iife.js (global SynodPlayer), synod-player-<tag>.d.ts and SHA256SUMS. No runtime dependencies and no bundled fonts. Each bundle is at most 48 KB minified and 16 KB gzip (about 21 KB and 9 KB today).
• A demo page that loads a scene.json (file, drag and drop, ?scene=<url> or one of the bundled golden scenes) with transport controls, markers and a ?bench=1 timing overlay.
• Tests: display-list goldens for all 29 golden scenes and the hand-made fixtures, WebKit pixel goldens, a Chromium smoke test and a WebKit frame-time gate in CI.
• Performance, measured by npm run bench in Node with a no-op 2D context (so these are evaluate-and-draw call costs, not rasterisation): about 0.02 ms per frame for raft and webapp and 0.09 ms for the 50-node, 200-message stress scene, loading and compiling raft in about 7 ms, and no heap growth over 10,000 frames. Numbers in Safari on Apple silicon at 120 Hz are pending the owner's manual check and will be added here.