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vscode-cowriting-plugin/sessions/0058/SESSION-0058.0-TRANSCRIPT-2026-06-26T05-12--2026-06-26T05-58.md
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# 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
1. **Backlog query** — listed the 8 open Gitea issues for `benstull/vscode-cowriting-plugin`
by priority; flagged #62 as the only untriaged item.
2. **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**.
3. **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).
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.
5. **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.
6. **Design presented** section-by-section; operator approved with "keep going"
(nodded the two flagged sub-decisions: dedicated `EditorProposalController`;
allow save of pending text).
7. **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
```