add sessions/0024/SESSION-0024.0-TRANSCRIPT-2026-06-11T12-36--2026-06-11T12-50.md + replace placeholder/variant SESSION-0024.0-TRANSCRIPT-2026-06-11T12-36--INPROGRESS.md

2026-06-11 16:12:15 -07:00
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+# Session 0024.0 — Transcript
+
+> App: vscode-cowriting-plugin
+> Start: 2026-06-11T12-36 (PST) · End: 2026-06-11T12-50 (PST, approximate)
+> Type: brainstorming
+> Driver: Ben Stull (with Claude)
+> Status: **FINALIZED (adopted)** — see the note below.
+
+## Adoption note
+
+This session ended **without finalizing** (it was left `--INPROGRESS`), so its
+original turn-by-turn conversation was not preserved. It was **adopted and
+finalized by session 0026's driver** on 2026-06-11 (per the finalize-on-goal /
+adopt-and-finalize policy). The end time above is approximate — the session ended
+sometime before session 0025 claimed at 12-51. The content below is **reconstructed**
+from the artifact this session produced (the F8 Solution Design) and the project
+memory written at the time, not from a live transcript.
+
+## Launch prompt
+
+```
+Brainstorm and write the Solution Design for #25 (out-of-workspace authoring) —
+settle the hybrid persistence model, the F5 cross-rung non-shareability, and the
+URI-rename orphaning caveat; per the issue body.
+```
+
+## Output (the reviewed artifact)
+
+The session produced and graduated the **F8 Solution Design**,
+`specs/coauthoring-out-of-workspace.md` (submitted to the content repo's `specs/`
+collection during this adopted finalize — it had not been submitted when the
+session ended). Forks settled (per the spec §9 + memory):
+
+- **Hybrid persistence (load-bearing):** a `SidecarStore` interface + `SidecarRouter`
+  façade with two impls — repo-rooted `CoauthorStore` (in-workspace `file:` →
+  committable `.threads/`, INV-2 byte-for-byte) and a new `GlobalSidecarStore`
+  (out-of-workspace `file:` + `untitled:` → global storage by `sha256(uri)`,
+  INV-19). Routed per-document by `#24`'s `isUnderRoot`. → INV-24.
+- **F5 cross-rung non-shareability:** a global artifact isn't a committed file, so
+  it is single-rung by construction. → INV-25.
+- **URI-rename orphaning:** accepted & documented (inherent to URI-hash keying).
+- **Document key** = repo-relative path in-workspace / URI string otherwise;
+  shared `isAuthorable` gate; untitled in-memory only (no on-save migration in v1).
+
+## Downstream
+
+F8 was implemented from this design in **session 0025** (PR #26, shipped to `main`)
+and the diff/preview authorship follow-up shaped F9 (session 0026, PR #27). See the
+project memory `f8-out-of-workspace-spec-graduated` / `f8-out-of-workspace-shipped`.
+
+## Deferred decisions
+
+None recorded (the placeholder's section was empty; this is an adopted finalize, so
+no new low-confidence calls were made here beyond the approximate end time).
@@ -1,23 +0,0 @@
-# Session 0024.0 — Transcript
-
-> App: vscode-cowriting-plugin
-> Start: 2026-06-11T12-36 (PST)
-> Type: brainstorming
-> Status: **PLACEHOLDER — claimed at session start; finalized at session end.**
->
-> This file reserves session ID 0024 for vscode-cowriting-plugin. The driver replaces this
-> body with the full transcript and renames the file to its final
-> SESSION-0024.0-TRANSCRIPT-2026-06-11T12-36--<end>.md form at session end.
-
-## Launch prompt
-
-```
-Brainstorm and write the Solution Design for #25 (out-of-workspace authoring) — settle the hybrid persistence model, the F5 cross-rung non-shareability, and the URI-rename orphaning caveat; per the issue body.
-
-```
-
-## 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._