Serial Studio — /ss-implement (phase 4 of 4)

Execute the approved tasks.md one task at a time, verifying as you go. This is the only phase that writes code. See doc/claude/spec-driven.md.

Preconditions

• doc/claude/specs/NNNN-slug/tasks.md exists and its status: is approved.
• Read spec.md, plan.md, and tasks.md in full before touching code.
• Set spec.md status: in-progress.

Per-task loop

For each task in order:

1. Read before writing. Read the target files in full this session — hotpath files (FrameBuilder, CircularBuffer, FrameReader, Dashboard) and existing signal/slot wiring are mandatory full reads (CLAUDE.md). Invoke ss-hotpath on any hotpath task, ss-cpp-modern when shaping non-trivial new C++.
2. Name the binding invariants before the first Edit: restate in chat, in your own words, the invariant(s) the task's Does line carries (plus any the read surfaced). A constraint steers the edit only when named at the point of action, not when it sits in a doc you read earlier (doc/claude/j-space.md).
3. Make the change with targeted Edit calls — edit, don't rewrite. Follow code-style.md: header ordering, [[nodiscard]], no in-header init, Q_EMIT, no in-body comments, 100-col, ASCII-only in source.
4. Verify the task: python scripts/code-verify.py --check <changed files>. Resolve new errors before moving on (advisories are baseline debt, but new code clears them). Run the task's stated check (a tests/scripts/ JS unit you can run, or a read-back).
5. Mark it done — tick the task's box in tasks.md so the file stays a live record.

Stay strictly inside the plan's file list. If a needed change falls outside it, stop and name it in chat ("the plan didn't cover X — add it?") rather than widening the diff. Never touch, revert, or restore a working-tree file you did not edit this session.

Finish

When every task is done, run the Definition of Done in tasks.md:

1. Static review: invoke qt-cpp-review on the C++ diff; address or note findings.
2. Hotpath: if touched, confirm the --benchmark-hotpath plan with the maintainer (you cannot run it — you don't build the app).
3. Self-review the diff, counterfactually: is this what was asked, and only that? Then answer out loud: "which rule does this diff most risk violating, and what is the concrete evidence it doesn't?" Name the rule and the evidence — not a generic pass (doc/claude/j-space.md, counterfactual self-check). If either answer is weak, say so before claiming completion.
4. Sanitize: run python scripts/sanitize-commit.py (it sanitizes only — never commits).
5. Identify the pytest targets from plan.md for the maintainer to run (the app must be up with the API server enabled).
6. Set spec.md status: done.

Rules

• Never build or run the app, and never commit or push without explicit per-turn permission — earlier authorizations do not carry over.
• The spec is the contract: every acceptance criterion must end up satisfied and checked off in spec.md. If reality diverges from the plan mid-build, stop and amend plan.md/tasks.md (re-confirm) rather than silently improvising.
• Keep tasks.md honest as you go — a half-finished feature should be resumable by reading the three spec files alone.