Session 0058.0 — Transcript

App: vscode-cowriting-plugin Start: 2026-06-26T05-12 (PST) End: 2026-06-26T05-58 (PST) Type: brainstorming Posture: autonomous (yolo) Status: FINALIZED

Launch prompt

Operator opened by asking what was in the Gitea backlog, then directed a brainstorming session for a new feature: "We should also show the proposed change in the Markdown file in the same way. The proposed change in the markdown file should be human-editable, show the diff just like it would after the change is completed in both the markdown file and the webview as the change is made. The diff in both the markdown file and preview webview should be exactly as they will be shown if the edit is accepted. Create a new working tree in a directory other than main for this work." — extended mid-session with: "replace the checkbox icon and 'x' icon on the proposed change as 'Accept' and 'Reject'. Each should have an arrow next to them for a dropdown that is 'Accept All' or 'Reject All'. One should be able to accept, reject, accept all, or reject all from either the markdown file or the web preview file."

Pre-state

Branch main, clean/pushed baseline (after FF). Latest shipped work: #60 live turn progress (session 0056, PR #61). Session 0057 (a cowriting.edit/routeEdit refactor) still in-flight sharing the checkout.
Backlog at session start (8 open): #59 (P1 bug, Apple-Events prompt), #54/#57/#58 (P2), #32/#35/#40 (P3), #62 (untriaged).

Turn-by-turn arc

Backlog query — listed the 8 open Gitea issues for benstull/vscode-cowriting-plugin by priority; flagged #62 as the only untriaged item.
Session routing — operator's feature request was feature-shaped and reversed a locked invariant (F10/INV-32 "clean editor"), so the session type was ambiguous. Asked; operator chose brainstorm a spec first. Routed via wgl-brainstorming; claimed session 0058.
Isolation — session 0057 still in-flight on the shared checkout → created an isolated worktree vscode-cowriting-plugin-s58 on branch s58-inline-editor-diff off origin/main (§5.4).
Exploration — dispatched an Explore agent that mapped five areas: webview render engine (trackChangesModel.ts), F4 proposal model + seam, the F10 clean-editor decision (zero editor decorations remain), controllers/wiring, and commands/toolbar. Key constraint surfaced: VS Code text editors cannot host editable phantom text — anything editable in the editor is buffer content; decorations only style existing text or inject non-editable before/after content.
Four design forks (AskUserQuestion, with ASCII previews):
- Editor model → optimistic apply + decorations.
- Timing → on proposal (not live token-stream into the editor).
- Editor affordance → CodeLens Accept ▾ / Reject ▾ + QuickPick dropdown.
- (Operator-added) Control parity → Accept/Reject/Accept-all/Reject-all from both surfaces; ✓/✗ superseded.
Design presented section-by-section; operator approved with "keep going" (nodded the two flagged sub-decisions: dedicated EditorProposalController; allow save of pending text).
Anchor + spec — filed Feature #64 (type/feature, priority/P2) since no tracker anchor existed; wrote specs/coauthoring-inline-editor-diff.md (INV-48..54, reversing INV-10/INV-32). Self-review clean. Operator approved.

Cut state

Spec graduated → content repo vscode-cowriting-plugin-content at 80d5d1a (specs/coauthoring-inline-editor-diff.md).
Feature #64 filed + labelled.
Worktree vscode-cowriting-plugin-s58 (branch s58-inline-editor-diff) stands ready for the downstream planning-and-executing session; no code committed this session (brainstorming output is the spec only).
Memory updated: f12-inline-editor-diff-spec-graduated.md + MEMORY.md index.

Deferred decisions

No autonomous low-confidence calls — every fork was decided live with the operator via AskUserQuestion, and the spec was operator-approved before submission. (The two design sub-decisions — dedicated controller, allow-save-of-pending — were flagged in the presented design and nodded by the operator.)

Next-session prompt

/goal Plan-and-execute #64 (F12 inline editable proposed-change diff in the Markdown editor) from specs/coauthoring-inline-editor-diff.md, in worktree vscode-cowriting-plugin-s58 (branch s58-inline-editor-diff); follow the spec's 5-slice Delivery Plan

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