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).

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