The port queue (PR 2)#

The queue plan.md step 7 runs from (Workflow, "The queue"). A unit is ready when everything in its Needs is merged into feat/rust-engine-port. The main session updates this file in each unit's merge commit, so the branch shows where the port stands.

Status: ready, running, merged, escalated (an S unit taken over by the main session). Tier: S is a Sonnet subagent, O the main session (or an Opus subagent when two O units are ready at once).

A unit's checks: cargo fmt --check, cargo test for its crate, its ported suite with every test name kept, and for the units that produce outputs (compile, preview, the commands) PIXELLAB_GOLDENS=<dir> cargo test --test corpus with no differences. The goldens come from node scripts/goldens.mjs --out <dir>.

Unit	Node → Rust	Tests ported	Needs	Tier	Status
U1	`iso.mjs` → `iso.rs`	iso cases of `engine.test.mjs`	PR 1	S	merged
U2	`svg.mjs`, `starter.mjs`, `starter-palette.mjs` → `svg.rs`, `starter.rs`, `starter-palette.json`	svg and starter cases	PR 1	S	merged
U3	`engine.mjs` → `engine.rs` (validate, resolve, `sceneAt`)	validation cases	PR 1	O	merged
U4	`depth.mjs` → `depth.rs`	`depth.test.mjs`	U1, U3	O	merged
U5	`motion.mjs` → `motion.rs`	motion cases of `engine.test.mjs` and `depth-motion.test.mjs`	U3	O	merged
U6	`edit.mjs` → `edit.rs`	edit cases of `engine.test.mjs`	U3	S	merged
U7	`compile.mjs` → `compile.rs` (budgets, lossless, `git` subprocess)	`compile.test.mjs`, corpus SVGs	U2–U5	O	merged
U8	`preview.mjs` → `preview.rs`	preview cases of `render.test.mjs`, corpus PNGs	U1, U3	S	merged
U9	the rest of `engine.test.mjs`	→ `tests/engine.rs`, in two units by `describe` block	U3–U6	S	merged
U10	`errors.mjs`, `argv.mjs`, `params.mjs`	`params.test.mjs`	PR 1	S	merged
U11	`jsonrpc.mjs`	its cases in `servers.test.mjs`	PR 1	S	merged
U12	`state.mjs`, `activity-summary.mjs`	`activity-and-proposals.test.mjs`	U10	S	merged
U13	`document.mjs` → `document.rs` (resolution, manifest, R9's problem)	`document.test.mjs`	U10	S	merged
U14	`session.mjs`, `open-docs.mjs`, `context.mjs`	`sync.test.mjs`	U3, U6, U12, U13	O	merged
U15	`merge.mjs`, `diff.mjs`	`merge.test.mjs`	U3	O	merged
U16	`watch.mjs` → `watch.rs` (polling, D2)	its cases in `sync.test.mjs`	U13	S	merged
U17	`scene-ops.mjs`	`scene-ops.test.mjs`, `groups.test.mjs`	U3, U4	S	merged
U18	`layer-ops.mjs`	`layers.test.mjs`	U17	S	merged
U19	`motion-ops.mjs`	`motion-commands.test.mjs`	U5	S	merged
U20	`render.mjs`	`render.test.mjs`	U7, U8	S	merged
U21	`registry.mjs`, `cli.mjs`, `help.mjs`, `bin/pixellab.mjs` → `registry.rs`, `cli.rs`, `help.rs`, `main.rs`	`help.test.mjs`, `commands.test.mjs`	U10	S	merged
U22	`commands/scene.mjs`, `scene-edit.mjs`	scene parts of `edit-commands.test.mjs`	U14, U17, U21	S	merged
U23	`commands/scene-layers.mjs`, `scene-motion.mjs`		U18, U19, U21	S	merged
U24	`commands/object.mjs`, `object-edit.mjs`	`map-set.test.mjs`, object parts of `edit-commands.test.mjs`	U14, U21	S	merged
U25	`commands/doc.mjs`, `document.mjs`, `proposal.mjs`, `check.mjs`, `art.mjs`, `common.mjs`	`art-commands.test.mjs`	U7, U14, U15, U21	S	merged
U26	`commands/chat.mjs`, `chat-context.mjs`	`chat.test.mjs`	U14, U21	S	merged
U27	`depth-edit.test.mjs`, the program parts of `depth-motion.test.mjs`	→ program tests	U22–U24	S	merged
U28	`serve.mjs`, `server-stdio.mjs`, `server-mcp.mjs`	`servers.test.mjs`, transcripts replayed	U11, U14, U16, U21	O	merged
U29	`migrate.rs`, `document migrate` (D3, R8)	new tests: every refusal, notes, `colorNotes`, the legacy `source/` folder, the SVG check refusing, `--to`, in place; its output equals the bootstrap's for the corpus apart from `notes`	U7, U13, U25	O	merged

Signatures settled by the main session#

U3 settles engine.rs's render internals before U4, U5 and U8 start on them.
U14 settles context.rs (Ctx) and session.rs (Session) before the command units (U22–U26) start; their briefs give the final methods.
The main session wrote commands/common.rs and commands/object.rs (object.list, show, render) as the pattern for the command units; U24 is left with object-edit.mjs. crates/pixellab/tests/corpus.rs compares every read command with the Node goldens.
U10 took the core of registry.rs (new, groups, call); U14 took sortScene, stayed and pathChanges (sorting.rs).
U21 settles registry.rs, argv.rs, params.rs and help.rs; U22–U26 add their commands to the files in commands/ only.