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+# Session 0003.0 — Transcript
+
+> App: vscode-cowriting-plugin
+> Start: 2026-06-10T00-24 (PST)
+> End: 2026-06-10T01-20 (PST)
+> Type: brainstorming
+> Status: **FINALIZED**
+
+## Launch prompt
+
+"Start the next coauthoring feature" → after orienting on the tracker, redirected
+to **brainstorming**: there is no Solution Design yet for the inner-loop
+coauthoring model, and the next feature F2 (#4, region-anchored threads) sits on
+its still-undesigned git-native persistence + anchoring model — which Epic #1
+explicitly earmarks for a follow-on brainstorming session. Operator chose
+"brainstorm the spec first."
+
+**Session opened as planning-and-executing, re-stamped to brainstorming** after
+the orientation made clear the reviewed artifact this session should produce is
+the **spec**, not code. Output: `specs/coauthoring-inner-loop.md` (Solution
+Design). F2 builds from it in a later session.
+
+## Pre-state
+
+- Came off session 0002 (POC #2 shipped, operator-confirmed via F5). `main` clean.
+- Content repo `vscode-cowriting-plugin-content` initialized (issues/ + plans/),
+  no `specs/` collection yet.
+- Tracker: only Epic #1 (open) and F1/POC #2 (open). F2–F5 sketched in #1's
+  decomposition, not filed.
+
+## Arc
+
+1. Session gate → opened **planning-and-executing**; claimed session 0003; clean
+   pushed `main` baseline; org context already wired (0002).
+2. **Tracker orientation** — read Epic #1 + #2 bodies. Confirmed the next feature
+   is **F2 (region-anchored threads)**, not yet filed; #2 still open.
+3. **Tracker housekeeping** (operator approved filing F2): filed **F2 → #4**
+   (`type/feature`/`priority/P1`); commented + **closed #2**; updated Epic #1's
+   decomposition (F1 checked, F2 → #4).
+4. **The fork.** F2 sits on the still-undesigned git-native persistence + anchoring
+   model, which Epic #1 earmarks for a follow-on **brainstorming** session, and
+   there is no spec. Surfaced the choice (brainstorm spec first vs. build F2 with a
+   provisional format). Operator chose **brainstorm the spec first** →
+   **re-stamped session 0003 to brainstorming**.
+5. **Brainstorming dialogue** (`superpowers:brainstorming`), one decision at a
+   time — all four resolved by the operator:
+   - **Depth** = threads-deep + model-wide skeleton (shared anchors/provenance;
+     F3/F4 as accommodated extension points).
+   - **Persistence** = `.threads/<path>.json` committed sidecar (not git notes /
+     trailers).
+   - **Anchoring** = hybrid (live offsets + durable content fingerprint; orphan
+     fallback, never silently moved).
+   - **Agent in F2** = none (no live `@cline/sdk` turn / no credentials; `agent`
+     provenance author reserved for F3/F4).
+6. Presented the consolidated design → operator approved.
+7. Wrote the Solution Design `specs/coauthoring-inner-loop.md` (focused: §6 the
+   meat — envelope, provenance primitive, hybrid anchoring, 5 invariants;
+   §7 SLICE-1..5). Self-review passed; operator reviewed and **approved**.
+8. **Finalize (brainstorming).** Base survey clean. Artifact guard ✓.
+   `submit-spec.sh --status graduated` published the spec to the content repo
+   `specs/` collection (`976fb48`) — the content repo's first `specs/` entry.
+
+## Cut state
+
+- **Spec graduated:** `vscode-cowriting-plugin-content/specs/coauthoring-inner-loop.md`
+  (`status: graduated`), content repo `main` at `976fb48`. The reviewed input to
+  building F2 (#4).
+- **Code repo** `vscode-cowriting-plugin`: clean, in sync — **no code this
+  session** (deliberate; F2 builds next session).
+- **Tracker:** Epic #1 (open, F1 checked / F2 linked), F1/#2 (closed), **F2/#4
+  (open, next)**.
+- **§9 pipeline:** N/A — brainstorming produced a spec, nothing deployable.
+- **Lineage not re-read:** `ben.stull/rfc-app#48`/`#46` live on the wiggleverse
+  host and weren't reachable from `git.benstull.org` this session; Epic #1's
+  distilled summary stood in. Noted in the spec's Source artifacts.
+
+## Operator plate
+
+- **Next session builds F2 (#4)** from the graduated spec (see next-session prompt).
+- Repo visibility: both repos still **public** on Gitea (carried from 0001) —
+  confirm if unintended.
+
+## Next-session prompt
+
+```
+/goal Build F2 (#4) — region-anchored threads — in a planning-and-executing session: write the just-in-time plan from vscode-cowriting-plugin-content/specs/coauthoring-inner-loop.md (§7.2 SLICE-1..5: CoauthorStore → Anchorer → ThreadController via the Comments API → reload/external re-anchor → @vscode/test-electron E2E) and execute it. UI surface ⇒ E2E host tests are first-class plan tasks. No live @cline/sdk turn / no provider-auth in F2.
+```
+
+## Deferred decisions
+
+- **Brainstorm-first vs. build-F2-directly (operator-resolved).** F2 sits on the
+  undesigned shared model; rather than default a provisional format autonomously,
+  surfaced the fork → operator chose **brainstorm the spec first**, redirecting the
+  session type. No low-confidence autonomous calls were left unflagged. (Filing F2,
+  closing #2, and editing Epic #1 were done with operator approval to file F2.)
@@ -1,20 +0,0 @@
-# Session 0003.0 — Transcript
-
-> App: vscode-cowriting-plugin
-> Start: 2026-06-10T00-24 (PST)
-> Type: planning-and-executing
-> Status: **PLACEHOLDER — claimed at session start; finalized at session end.**
->
-> This file reserves session ID 0003 for vscode-cowriting-plugin. The driver replaces this
-> body with the full transcript and renames the file to its final
-> SESSION-0003.0-TRANSCRIPT-2026-06-10T00-24--<end>.md form at session end.
-
-## Launch prompt
-
-_(launch prompt not captured at claim time)_
-
-## Deferred decisions
-
-_Autonomous-mode low-confidence calls the driver made and would have
-liked operator input on. Appended as the session runs; surfaced at
-finalize. Empty if none._