Ben Stull
141 lines
7.5 KiB
Markdown
141 lines
7.5 KiB
Markdown
# Session 0021.0 — Transcript
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> App: vscode-cowriting-plugin
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> Start: 2026-06-11T08-33 (PST)
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> End: 2026-06-11T11-52 (PST)
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> Type: planning-and-executing
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> Status: **FINALIZED**
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> Posture: autonomous (yolo)
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## Launch prompt
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> /goal Plan and execute Feature #21 (F7 rendered track-changes markdown
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> preview) from the graduated Solution Design at
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> content `specs/coauthoring-rendered-preview.md` — 4 slices per §7.2,
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> host-E2E tier, no LLM in CI.
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## Plan
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Plan-and-execute F7 (#21) from the graduated Solution Design
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`coauthoring-rendered-preview.md`, four slices per §7.2:
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- **SLICE-1** `trackChangesModel.ts` — vscode-free pure render engine: block
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diff (LCS by normalized text) + word-level prose refinement + `markdown-it`
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render + atomic code/mermaid blocks (INV-22/23). Add `markdown-it` + `diff`
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deps. Vitest suite per §6.8.
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- **SLICE-2** Webview asset + build: `media/preview.ts` (receive HTML, run
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`mermaid.run()`, theme CSS), esbuild second entry → `out/media/preview.js`
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bundling mermaid; sealed CSP shell (INV-21).
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- **SLICE-3** `TrackChangesPreviewController` (vscode layer) + additive F6
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`onDidChangeBaseline` event + `package.json` command/keybinding
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(`cowriting.showTrackChangesPreview`, `ctrl+alt+r`, markdown-only) +
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`CowritingApi` handle + test seam (`isOpen`/`getLastModel`); debounced live
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update.
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- **SLICE-4** Host E2E (open/live/epoch/pin/non-markdown per §6.8) +
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`docs/MANUAL-SMOKE-F7.md` + README F7 section.
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One PR; host-E2E tier (no browser/deploy stage); no LLM in CI.
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## Pre-state
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Clean `main`, in sync with `origin/main`. Epic #1 inner loop (F2–F6) fully
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shipped; F6 diff-view (`#17`/`#19`) was the immediate predecessor. F7's spec
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`coauthoring-rendered-preview.md` graduated in session 0020. The
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implementation plan was written just-in-time from that spec
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(`docs/superpowers/plans/2026-06-11-f7-rendered-track-changes-preview.md`).
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## Turn-by-turn arc
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1. **Init.** Classified as planning-and-executing; claimed session **0021**
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(no other sessions in flight). Verified baseline (fast-forwarded `main` 1
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commit), read the F7 spec, resolved content/roadmap repos.
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2. **Plan.** Wrote the 12-task implementation plan with `superpowers:writing-plans`
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(engine → webview → controller → wiring → E2E → docs → verify), self-reviewed
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against the spec (full INV-20..23 + PUC coverage). Committed on branch
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`f7-rendered-preview`.
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3. **Execute (TDD, `superpowers:executing-plans`).** Twelve tasks, each
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test-first where applicable, committed individually:
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- T1 deps (`markdown-it`, `diff`, `mermaid` + types).
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- T2–T5 `src/trackChangesModel.ts` (pure engine): `splitBlocks` → `diffBlocks`
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(LCS via jsdiff `diffArrays`, atomic fences INV-23) → `renderTrackChanges`
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(markdown-it + custom mermaid fence rule + word-level prose `<ins>`/`<del>`)
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→ injectable per-block renderer + error-chip fallback (PUC-6). **18 vitest
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cases.**
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- T6 `media/preview.ts` + `media/preview.css` + esbuild **second entry**
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(browser IIFE bundling mermaid → `out/media/preview.js`; CSS imported so
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esbuild emits `out/media/preview.css`). Host bundle stayed ~68kb; webview
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bundle ~7MB (mermaid, isolated as intended).
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- T7 additive `DiffViewController.onDidChangeBaseline` event.
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- T8 `src/trackChangesPreview.ts` — `TrackChangesPreviewController` (sealed
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CSP+nonce webview, one panel/markdown doc, debounced live refresh, reuses F6
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baseline, no persistence INV-20, test seam `isOpen`/`getLastModel`).
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- T9 wired into `extension.ts` (workspace-independent like F6) + `CowritingApi`
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+ `package.json` command/keybinding (`ctrl+alt+r`, markdown-only).
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- T10 host E2E `test/e2e/suite/trackChangesPreview.test.ts` (5 cases:
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open/PUC-1, type/PUC-2, propose+accept epoch advance/PUC-3, pin/PUC-4,
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non-markdown guard/PUC-6) + fixtures `preview.md` + `notes.txt`.
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- T11 `docs/MANUAL-SMOKE-F7.md` + README F7 section.
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- T12 full verification.
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4. **Verify.** typecheck clean; **122 unit** passing; **33 (workspace) + 4
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(no-workspace) E2E** passing (F7's 5 among them); build produces all artifacts;
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working tree clean (INV-20 — preview wrote nothing to repo/sidecar).
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5. **Ship.** Pushed branch, created **PR #23** via Gitea API, merged (merge
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commit), synced `main`, deleted branch local + remote, re-verified `main`
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green post-merge.
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## Cut state
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F7 (#21) shipped to `main` (PR #23, merge commit `ce01ef8`). Plan archived to the
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content repo `plans/` (`0a52159`). `main` clean and in sync. Deferred follow-up
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**#22** (intra-diagram mermaid diffing) remains open.
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## Deferred decisions
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Autonomous-mode low-confidence calls made this session (none blocked progress;
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all cheap to revisit):
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1. **CSP `style-src 'unsafe-inline'`** in the webview shell. Mermaid injects
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`<style>` tags into the DOM at runtime, which a nonce/hash can't cover.
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*Chosen:* allow inline styles while keeping **scripts** strictly nonce-gated
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and local-only (no remote/CDN script source) — INV-21's network seal is
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intact. *Alternative:* hash every injected style (impractical for runtime
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injection). Standard practice for mermaid-in-webview, but flagging the
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relaxation since it's security-adjacent.
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2. **Block-key normalization lowercases + collapses whitespace** for diff
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matching. *Consequence:* a case-only or whitespace-only edit to a block won't
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register as a `changed` block. *Chosen:* reduce diff noise from reflow/casing.
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*Alternative:* case/whitespace-sensitive keys (more literal, noisier). Minor
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fidelity tradeoff in a pure-preview view.
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3. **PR merged as a merge commit** (not squash), matching recent repo history
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(`Merge pull request …` style). The 12 conventional commits are preserved.
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4. **CSS delivered via `import "./preview.css"` from the webview entry** so
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esbuild emits the sibling `out/media/preview.css` (single `localResourceRoot`,
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one build mechanism) rather than a separate copy step.
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## Operator plate
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- F7 is live: `Ctrl+Alt+R` / "Cowriting: Open Track-Changes Preview" on a
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markdown doc. Run the **manual smoke** (`docs/MANUAL-SMOKE-F7.md`) once to
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verify the webview's *visual* rendering (mermaid diagrams, theming) — that
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layer is intentionally not asserted in the sealed-sandbox E2E.
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- **Deployment pipeline (§9):** this app is a **non-shippable VS Code extension
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POC** (spec §7.3 — no marketplace publish). There is **no deployable UI app /
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no PPE or prod stage** for it; the app's required pipeline tier is **host E2E**,
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which ran green. So "completion" = merged + host-E2E green + manual smoke, not a
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flotilla deploy. Nothing was skipped — there is no cloud stage to run.
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## Next session
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The open follow-up is **#22 (intra-diagram mermaid diffing)**, `type/task`. The
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F7 spec §6.7 explicitly flagged it as "a large unscoped design" (diff at the
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source / parsed-graph / SVG level; layout reflow) — so although typed a task, it
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is design-heavy and the session may want to scope the approach first.
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```
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/goal Plan and execute #22 (F7 intra-diagram mermaid diffing) — extend the F7 track-changes preview beyond the whole-diagram "changed" badge to node/edge-level diffing; spec §6.7 flags it as unscoped (source vs parsed-graph vs SVG, layout reflow), so scope the approach first. Builds on src/trackChangesModel.ts (atomic mermaid blocks, INV-23) + the F7 webview; host-E2E tier, no LLM in CI.
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```
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Read first: memory `f7-rendered-preview-shipped.md` (what shipped + the open
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follow-ups) and the F7 spec `coauthoring-rendered-preview.md` §6.7 (the deferred
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mermaid-diff decision).
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