Ben Stull
128 lines
6.9 KiB
Markdown
128 lines
6.9 KiB
Markdown
# Session 0044.0 — Transcript
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> App: vscode-cowriting-plugin
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> Start: 2026-06-13T07-40 (PST)
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> Type: planning-and-executing
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> End: 2026-06-13T08-04 (PST)
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> Status: **FINALIZED.**
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> Posture: autonomous (yolo)
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## Launch prompt
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```
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/goal plan-and-execute #47 (SLICE-2 of the document-edit flow — document edits propose per changed block: diffToBlockHunks INV-39 supersedes INV-37, word-precise intra-block attribution INV-40, block-insertion anchoring INV-41), per specs/coauthoring-document-edit-flow.md
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```
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## Plan
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**SLICE-2 — #47 (review, P1)** of the document-edit flow
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(`specs/coauthoring-document-edit-flow.md` §7.2). Anchor: Feature #47
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(`type/feature`); covered by the graduated combined Solution Design → §4.3 R3.
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Document rewrites propose **one F4 proposal per changed block** (the unit a human
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reviews), but each accept reconciles attribution at **word** granularity (the unit
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F3 records). INV-39 supersedes INV-37 for document edits; INV-40 word-precise
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intra-block attribution; INV-41 block-insertion anchoring. Selection edits
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unchanged.
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Tasks:
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1. `model.ts` — add optional `granularity?: "block" | "single"` to `Proposal`
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(additive, back-compat: absent ⇒ `"single"`). INV-39/§6.3.
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2. `proposalModel.ts` — `addProposal` opts gains `granularity`, threaded onto the
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proposal (omitted when absent).
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3. `trackChangesModel.ts` — new pure `diffToBlockHunks(currentText,
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rewrittenText): EditHunk[]`: split both sides into the existing block units
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(`splitBlocksWithRanges` for source ranges + `splitBlocks` keys), diff blocks
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(reuse `diffArrays` keying like `diffBlocks`), emit ONE `EditHunk` per
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changed/added/removed block — changed → `[block.start,end)`→rewrite; fences
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atomic (whole-fence hunk); inserted → anchored to adjacent boundary (INV-41,
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reuse the `anchorInsertion` idea); unchanged → none. Same `EditHunk` shape as
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`diffToHunks` (which is RETAINED as the intra-block sub-diff engine).
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4. `trackChangesPreview.ts` — `runEditAndPropose` **document branch** uses
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`diffToBlockHunks` and tags each minted proposal `granularity:"block"`.
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5. `proposalController.ts` — `accept`: when `granularity === "block"`, re-resolve
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the block text, `diffToHunks(blockText, replacement)` → per-run word sub-diff,
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apply **one `applyAgentEdit` per changed run, descending offset** so only the
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runs Claude changed land Claude-attributed; unchanged spans keep prior author
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(INV-40). Non-block keeps the single `applyAgentEdit`.
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6. Tests: unit (`diffToBlockHunks` + INV-40 controller) + host E2E (#47 cases in
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§6.8); update the existing f11 document-path E2E (now per-block, supersedes
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INV-37 word-level expectation); `docs/MANUAL-SMOKE-F12.md` §2.
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**Design note (seam constraint):** `pendingEdits.matchEvent` resolves ONE
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registration per change event, so INV-40's per-run attribution is implemented as
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**sequential** `applyAgentEdit` calls (descending offset), not a single
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multi-replace `WorkspaceEdit`. The spec's "one undo-grouped edit" wording is thus
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approximated as N undo steps per block accept — see Deferred decisions.
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No new persisted artifact; no deploy pipeline (VS Code extension).
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## Results
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**SLICE-2 (#47, review, P1) shipped to `main`** — PR
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[#50](https://git.benstull.org/benstull/vscode-cowriting-plugin/pulls/50)
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(merged), issue #47 closed.
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- `trackChangesModel.ts` — new pure `diffToBlockHunks` (block-key alignment via
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`diffArrays`/`diffBlocks` keying; isolated changed block → block-aligned hunk →
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rewritten raw; fences atomic INV-23; insert/delete → exact gap-span hunk;
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zero-width gap-span anchored INV-41). Split `diffToHunks` into raw
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`wordEditHunks` + anchoring wrapper (fixes a latent overlap bug under batch apply).
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- `trackChangesPreview.ts` — document branch uses `diffToBlockHunks`, tags
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`granularity:"block"`.
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- `model.ts`/`proposalModel.ts` — additive optional `Proposal.granularity`.
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- `proposalController.ts` — `acceptBlock`: intra-block word sub-diff
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(`wordEditHunks`) → one `applyAgentEdit` per changed run, descending offset
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(INV-40 word-precise attribution; unchanged spans keep prior author).
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- Tests: `diffToBlockHunks` unit (reconstruction/fence/add-remove); `f12Review`
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host E2E (M→M, unchanged→none, fence atomic, INV-40, INV-41); updated f11
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document-path E2E to per-block; `MANUAL-SMOKE-F12.md` §2.
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Verification: `tsc --noEmit` clean; **214 unit** green; **69/5 host E2E** green
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(main suite 65 → 69 net with the new F12 review tests).
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**Next:** SLICE-3 — #46 (accept-all, INV-42): `acceptAllProposals` (controller,
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descending-order, orphan-skip + report) + `cowriting.acceptAllProposals` command
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+ preview toolbar **Accept all** button (`{type:"acceptAll"}` intent, shown ≥2
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pending).
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## Session arc
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1. **Claim.** Resumed via `/goal next` (after session 0043 shipped #42); claimed
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session 0044 for #47. Clean `main` baseline.
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2. **Anchor gate.** #47 (`type/feature`) covered by the graduated combined design
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→ §4.3 R3 satisfied.
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3. **Deep code read.** `splitBlocks*`/`diffBlocks`/`diffToHunks`/`EditHunk`,
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`runEditAndPropose`, `proposalController.accept`/`applyAgentEdit`, and crucially
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`pendingEdits.matchEvent` (one registration per change event → drove the INV-40
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sequential-apply decision).
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4. **TDD `diffToBlockHunks`.** First attempt (coarsen word-hunks) failed a
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reconstruction case — discovered `diffToHunks` can emit OVERLAPPING hunks
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(anchorInsertion over-absorbs). Switched to block-key alignment with
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replacement-from-rewritten-raw → green.
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5. **Model + wiring + INV-40 accept.** Added `granularity`; document branch →
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`diffToBlockHunks`; `acceptBlock` intra-block sub-diff. The overlap bug then
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resurfaced in `acceptBlock` (batch apply) → split `diffToHunks` into raw
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`wordEditHunks` (disjoint) + anchoring wrapper; `acceptBlock` uses raw → green.
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6. **Verified + shipped** (214 unit, 69/5 E2E), self-reviewed, PR #50 merged,
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#47 closed, memory + transcript updated.
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## Deferred decisions
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_Autonomous-mode low-confidence calls the driver made and would have
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liked operator input on. Appended as the session runs; surfaced at
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finalize. Empty if none._
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- **INV-40 undo granularity** (driver call). Spec §6.2/§6.7 say accepting a block
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proposal should be "one undo-grouped WorkspaceEdit." But the F3 seam's
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`pendingEdits.matchEvent` matches exactly ONE registration per change event, so a
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single `WorkspaceEdit` with N independent run-replaces can't carry per-run
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attribution (the multi-hunk event fails to match any single registration → falls
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through to human). Implemented INV-40 as **sequential per-run `applyAgentEdit`
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calls, descending offset** — correct word-precise attribution, reuses the seam
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with zero attribution-core risk, but a block accept is N undo steps rather than
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one. Single-undo-step would require extending `matchEvent`/`onDidChange` to
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consume multiple registrations per event (riskier F3 change) — left as a possible
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follow-up.
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