Ben Stull
64 lines
2.9 KiB
Markdown
64 lines
2.9 KiB
Markdown
# Session 0034.0 — Transcript
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> App: vscode-cowriting-plugin
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> Start: 2026-06-12T03-28 (PST)
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> End: 2026-06-12T03-39 (PST)
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> Type: planning-and-executing
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> Posture: autonomous (yolo)
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> Status: **FINALIZED**
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## Launch prompt
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`/goal next` → resolved from memory to: plan-and-execute #38 (undo renders wrong
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marks in the F10 review preview, P1).
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## Plan
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Fix #38 (P1). Root cause (confirmed by reading + E2E repro): attribution attributed
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every non-seam change to currentAuthor() (always human), ignoring e.reason — so
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undo/redo re-inserting text falsely colored it human. Fix: geometry-only span
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reconciliation on undo/redo (no fresh attribution). E2E repro → minimal fix → green.
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## Arc (systematic debugging)
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- **Phase 1 (root cause):** traced the three data sources feeding the pure
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`renderReview` (baseline diff / F3 author spans / F4 proposals). Read
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`attributionController.onDidChange` + `attributionTracker.applyChange`: every
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non-seam change is attributed to `currentAuthor()` (always human) and `e.reason`
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is ignored. Proposals only shift (not the culprit). Disk-sync guard masks
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undo-to-saved-state → bug is on mid-edit undo.
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- **Reproduce:** wrote `test/e2e/suite/undoMarks.test.ts` driving edit→edit→undo
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(mid-edit, buffer stays dirty). Confirmed FAILING: after undo, `spansFor` =
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`[{start:6,end:12,author:"human"}]` over restored "bravo " — false attribution.
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- **Fix (Phase 4):** `applyChange` gains `attributeInserted` (default true);
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`onDidChange` sets it false and skips seam matching when
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`e.reason === Undo|Redo`. Restored text stays neutral, not falsely human.
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- **Verify:** repro passes; +3 unit tests for the geometric-only path. 197 unit +
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50 E2E green; typecheck clean.
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- **Shipped:** PR #39 merged → main; issue #38 closed.
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- **Follow-up filed #40** (type/task, P3): restore *exact* prior provenance on
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undo/redo (the fix leaves undone text neutral, not its original author color);
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needs an attribution history stack synced to the editor undo stack.
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## Cut state
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`main` clean + synced; 0 open PRs. #38 fixed and closed; #40 filed. 197 unit + 50
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E2E green. No deploy pipeline (VS Code extension).
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## Deferred decisions
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1. **Scoped the fix to "neutral on undo," not exact provenance restoration.**
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Alternative: an attribution history stack that restores each char's original
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author on undo/redo. Why deferred: synchronizing such a stack with VS Code's
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undo (which coalesces edits) is fragile, and the neutral fix already removes the
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reported misleading marks. Tracked as #40 (P3) so it isn't lost.
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## Next /goal
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```
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/goal plan-and-execute #33 (intra-emphasis sentinel hardening) via the token-aware HTML-post-process approach recommended in the issue #33 comment, per specs/coauthoring-interactive-review.md §1.7/§9
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```
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(Backlog: #40 undo provenance (P3); #32 scroll-sync (feature, needs a Solution
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Design); #35 repo rename (outward, operator timing).)
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