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+# Session 0006.0 — Transcript
+
+> App: vscode-cowriting-plugin
+> Date: 2026-06-10, 08:02–09:15 PST
+> Type: brainstorming
+> Goal: Brainstorm Gitea issue #6 (F3 — live human/Claude attribution in the
+> buffer, git-native provenance) and write its Solution-Design spec.
+> Outcome: **Spec produced, operator-approved, and graduated** —
+> `vscode-cowriting-plugin-content/specs/coauthoring-attribution.md` (content
+> repo commit `b7637d9`). All three forks issue #6 routed here are resolved.
+
+## Launch prompt
+
+```
+Let's brainstorm Gitea issue #6
+
+```
+
+## Plan
+
+Brainstorming session for Gitea issue #6 — **F3: Live human/Claude attribution
+in the buffer, git-native provenance** (the follow-on Solution-Design session
+Epic #1 / Feature #6 route the F3 design fork to).
+
+1. Orient: issue #6, the graduated spec
+   (`vscode-cowriting-plugin-content/specs/coauthoring-inner-loop.md` §6.3
+   `attributions[]`/`provenance`, §9 OPEN→F3/F4), F2 code on main.
+2. Explore the design fork with the operator:
+   - machine-edit ingress (live `@cline/sdk` turn vs. programmatic apply vs. both)
+   - `attributions[]` shape on the shared `anchors`/`provenance` primitives
+   - mixed-edit split/merge granularity rules
+3. Write the F3 Solution-Design spec locally under this repo's `specs/`.
+4. Finalize submits the spec to the content repo's `specs/` collection.
+
+## Pre-session state
+
+- `main` clean at `df872c9` (session 0004's transcript commit); F2 (#4) shipped
+  via PR #5; F1/POC (#2) shipped earlier.
+- Issue #6 (F3) freshly captured in session 0005 (tracked-lite capture session,
+  still `--INPROGRESS` at this session's claim — warned, proceeded; no overlap:
+  0005 captured the issue, 0006 brainstorms it).
+- Parent spec `coauthoring-inner-loop.md` graduated; `attributions[]` and the
+  `Provenance` `agent` author reserved (INV-4); "where Claude runs +
+  provider/auth" explicitly deferred to "the first live `@cline/sdk` turn,
+  F3/F4" (§9 DEFERRED).
+
+## Turn-by-turn arc
+
+1. **Init.** Classified the opening prompt as brainstorming; claimed session
+   0006 (`--type brainstorming`, placeholder pushed at `8d406a8`). Local main
+   was behind 2 (sessions 0005/0006 placeholder commits) — fast-forwarded to a
+   clean pushed baseline.
+2. **Orient.** Read issue #6 in full via the Gitea API; read the graduated
+   parent spec; surveyed F2's shipped units (`model.ts`, `anchorer.ts`,
+   `store.ts`, `threadController.ts`) to ground the design in real interfaces.
+3. **Fork 1 — machine-edit ingress.** Operator chose **both**: a programmatic
+   `applyAgentEdit` seam (the attribution boundary F4 later drives) + a minimal
+   live `@cline/sdk` turn driving it.
+4. **Fork 2 — provider/auth.** Operator asked whether `@cline/sdk` supports
+   Max/Pro-plan auth instead of API keys. Researched the installed SDK
+   (0.0.46): found the built-in **`claude-code` provider** ("Use Claude Code
+   SDK with Claude Pro/Max subscription", via `ai-sdk-provider-claude-code`),
+   plus Cline-account OAuth and `anthropic` API-key alternatives. Operator
+   chose **claude-code, + anthropic-key only if needed for testing**; driver
+   judged the fallback unnecessary (tests drive the seam, not the provider) —
+   logged as a deferred decision.
+5. **Fork 3 — mixed-edit granularity.** Character-precise split + same-author
+   coalescing (INV-7). Whole-span flips and thresholds rejected as dishonest.
+6. **Rendering.** Claude spans tinted + human gutter bar + toggle; unattributed
+   text plain; orphans → status-bar count.
+7. **Live-turn UX.** Edit-selection command (selection + instruction input box
+   → replacement text through the seam).
+8. **Design presented** (decisions table, `attributions[]` shape, architecture
+   with two new vscode-free units, testing strategy, 6 slices) — approved.
+9. **Spec written** to `specs/coauthoring-attribution.md` (this repo, local);
+   self-review fixed one ambiguity (orphan surfacing pinned to a status-bar
+   count). Operator reviewed and approved ("I'm happy with it").
+10. **Finalize.** Submitted the spec to the content repo `specs/` collection
+    with `--status graduated` (autonomous default) → `b7637d9`. Removed the
+    local untracked copy per the F2/session-0003 precedent (content repo is the
+    canonical home; app-repo tree left clean). Memory updated.
+
+## Cut state (end of session)
+
+| Repo | State |
+| --- | --- |
+| `benstull/vscode-cowriting-plugin` | `main` clean at `8d406a8` (transcript placeholders only; no code changes this session) |
+| `benstull/vscode-cowriting-plugin-content` | `main` at `b7637d9` — **specs/coauthoring-attribution.md added, status: graduated** |
+
+Design decisions locked (spec §6.7/§9 — don't relitigate):
+ingress = seam (`applyAgentEdit`, INV-9) + minimal live turn (edit-selection
+command); auth = `claude-code` provider only, zero extension-held credentials
+(INV-8); granularity = char-precise split + coalesce (INV-7); record =
+span-list on shared `anchors` ({id, anchorId, author, createdAt, updatedAt,
+turnId?}), orphanhood resolve-time; rendering = Claude tint + human gutter +
+toggle; slices = SLICE-1..6; E2E drives the seam, **no LLM in CI**; live turn =
+documented manual smoke.
+
+## Deferred decisions
+
+- Operator delegated "anthropic-key fallback if necessary for testing" — driver
+  judged it NOT necessary (tests drive the apply-edit seam, not the provider;
+  live turn gets a manual smoke) and specced `claude-code` provider only, with
+  the API-key path deferred to an OPEN item. (specs/coauthoring-attribution.md
+  §6.7, §9)
+- Local spec copy removed from the app repo working tree after submission
+  (content repo is the canonical home, per the session-0003/F2 precedent) — the
+  alternative was committing a duplicate copy to the app repo.
+
+## What lands on the operator's plate
+
+- Nothing blocking. Session 0005 (capture) is still `--INPROGRESS` in the
+  session history — adopt/finalize it whenever convenient.
+- The live-turn smoke test (when F3 is built) needs this machine's Claude Code
+  signed in — already true today.
+
+## Prompt the operator can paste into the next session
+
+```
+/goal Build F3 (#6) — live human/Claude attribution — in a planning-and-executing session: write the just-in-time plan from vscode-cowriting-plugin-content/specs/coauthoring-attribution.md (§7.2 SLICE-1..6) and execute it on the F2 model. Host E2E drives the applyAgentEdit seam (no LLM in CI); the live claude-code turn gets a documented manual smoke.
+```
diff --git a/sessions/0006/SESSION-0006.0-TRANSCRIPT-2026-06-10T08-02--INPROGRESS.md b/sessions/0006/SESSION-0006.0-TRANSCRIPT-2026-06-10T08-02--INPROGRESS.md
deleted file mode 100644
index 782bc96..0000000
--- a/sessions/0006/SESSION-0006.0-TRANSCRIPT-2026-06-10T08-02--INPROGRESS.md
+++ /dev/null
@@ -1,23 +0,0 @@
-# Session 0006.0 — Transcript
-
-> App: vscode-cowriting-plugin
-> Start: 2026-06-10T08-02 (PST)
-> Type: brainstorming
-> Status: **PLACEHOLDER — claimed at session start; finalized at session end.**
->
-> This file reserves session ID 0006 for vscode-cowriting-plugin. The driver replaces this
-> body with the full transcript and renames the file to its final
-> SESSION-0006.0-TRANSCRIPT-2026-06-10T08-02--<end>.md form at session end.
-
-## Launch prompt
-
-```
-Let's brainstorm Gitea issue #6
-
-```
-
-## 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._