vscode-cowriting-plugin/sessions/0014/SESSION-0014.0-TRANSCRIPT-2026-06-10T22-27--2026-06-10T22-34.md

Session 0014.0 — Transcript

App: vscode-cowriting-plugin Start: 2026-06-10T22-27 (PST) · End: 2026-06-10T22-34 (PST) Type: brainstorming Goal: spec Feature #14 (F5 — cross-rung format + Gitea round-trip) — leg 2 of the /goal F5 arc (session 0013 captured #14). Outcome: Solution Design graduated — content specs/coauthoring-cross-rung-format.md (8a6409c); all six design forks resolved; new invariants INV-14..17.

Launch prompt

Brainstorm the Solution Design spec for Feature #14 (F5 — cross-rung git-native persistence format + Gitea round-trip) on benstull/vscode-cowriting-plugin, resolving the six design forks routed there by the capture (substrate carrier; contract form/home; cross-rung identity; merge semantics; round-trip proof shape; versioning), then graduate it to vscode-cowriting-plugin-content/specs/. (Leg 2 of the /goal F5 arc; session 0013 captured #14.)

Plan

1. Orient: anchor Feature #14 (non-epic — R1 passes); inputs = the shipped sidecar model (model.ts read in full this conversation), all three graduated specs (esp. F2's substrate decision table), rfc-app#46 (fetched session 0013), the engineering central-schema pattern. No BDD corpus registered for this app.
2. Resolve the six forks: (a) substrate carrier, (b) contract form/home, (c) cross-rung identity, (d) merge semantics, (e) round-trip proof shape, (f) versioning — grounded in the shipped format facts.
3. Write the Solution Design locally; graduate at finalize via the brainstorming addendum (autonomous → --status graduated).

Turn-by-turn arc

1. Init. Claimed 0014 (--type brainstorming); clean pushed main; anchor #14 is type/feature → R1 passes. No BDD corpus for this app.
2. Context. Already deep from this conversation: full model.ts (incl. the discovery that serializeArtifact drops unknown fields — the forward-compat gap that became INV-15), F2's substrate decision table, rfc-app#46's body (session 0013), all three OPEN→F5 entries, the engineering central-schema discipline.
3. Forks resolved (alternatives in spec §6.7): (a) sidecar stays the canonical carrier — notes/trailers get worse cross-rung, forges read JSON natively; (b) prose contract in the content repo + JSON Schema code-resident in the plugin repo (ajv dev-only); (c) identity = git's model — email on Provenance + agent.onBehalfOf (rfc-app#46 §6.5); (d) merge = pure 2-way mergeArtifacts union-by-id, conflicts surfaced (INV-17); (e) proof = local stand-in writer script + external-change E2E + byte-stability (no real forge in CI); (f) all additive — schemaVersion stays 1, INV-16 rules incl. writer unknown-field preservation (INV-15).
4. Spec written locally (docs/superpowers/specs/2026-06-10-f5-cross-rung-format-design.md); new invariants INV-14..17; 5 slices; host E2E first-class; no manual smoke (no LLM leg); Claude-Code-not-Claude-Design recorded in §5.
5. Self-review passed.

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.

• Skipped interactive design review (same call as session 0011): spec graduates without operator review under autonomous posture + the standing /goal; §6.7/§9 log every fork with alternatives for post-hoc re-litigation.
• Schema home = plugin repo, not engineering central: chose code-resident (next to the reference implementation, consumed by the unit suite) over the org-central schemas/ discipline, with graduation to central explicitly parked at §9 OPEN→Gitea-rung. Defensible either way — flagging it.
• Emails committed to the repo as identity: ratified git's own model (commits already carry emails) rather than inventing forge-neutral ids; noted as PII-class in §6.6. Operator may prefer an opt-out config later.

Cut state (end of session)

Item	State
Spec coauthoring-cross-rung-format.md	Graduated in content repo at 8a6409c
Plugin repo main	Clean, pushed (no code changes this session)
Feature #14	Open, now spec-backed — eligible R2 anchor for planning-and-executing
Content repo working tree	Three uncommitted issue drafts (Author's plate, unchanged)
Memory	f5-cross-rung-spec-graduated written; carries the current Next /goal

What lands on the operator's plate

• Review the graduated spec at vscode-cowriting-plugin-content/specs/coauthoring-cross-rung-format.md — graduated without interactive review (autonomous posture); §6.7 + §9 hold every fork's alternatives. The three flagged calls above (review skip; schema home; emails-as-identity) are the ones most worth a look.
• Three uncommitted content-repo issue drafts remain yours to publish or discard.

Prompt the operator can paste into the next session

/goal Implement Feature #14 (F5 cross-rung format + round-trip) per the graduated spec vscode-cowriting-plugin-content/specs/coauthoring-cross-rung-format.md — plan just-in-time from its §7.2 slices, then execute; done = contract + schema published, unit + host E2E green (round-trip, merge, fail-safe, unknown-field preservation all exercised).