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# Session 0084.0 — Transcript
> App: ohm
> Start: 2026-06-07T07-25 (PST)
> End: 2026-06-07T08-37 (PST)
> Type: coding
> Posture: autonomous (yolo) throughout
> Driver model: Claude Opus 4.8 (1M context)
## Launch prompt
`/goal next` — resume the goal recorded at the last finalize. The session gate
resolved the memory `Next /goal:` field to: implement **SLICE-0** (amend binding
`SPEC.md` §22.4a so the entry schema is collection-configured `.meta.yaml`
sidecar fields, not type-driven frontmatter; defer item-3 type surfaces; mark
per-type-surfaces superseded; §20 changelog — doc-only) **then SLICE-1**
(sidecar `<slug>.meta.yaml` storage + dual-read parser + idempotent migration
tool + malformed-metadata catalog flag), per
`docs/design/2026-06-06-configurable-collection-metadata.md` §7.
## Pre-state
- rfc-app at v0.46.1 on `main`; local `main` was behind origin by 7 (a parallel
session — 0080, still `--INPROGRESS` ~30h — had landed the configurable-metadata
spec PR #26, the corpus-tree spec PR #28, and the v0.46.1 migration-029 fix).
Fast-forwarded local `main` to `36cb618`.
- The configurable-collection-metadata design had **landed** (PR #26); the
per-type-surfaces draft already carried its superseded banner.
- OHM live at v0.46.1 (undeployed gap begins here).
## The arc (turn by turn)
1. **Gate + claim.** Classified `/goal next` → coding. Ran `wgl-session-coding-init`:
peeked (session 0080 in flight — noted, proceeded in autonomous posture),
claimed **0084**, ff-synced `main`, confirmed the configurable-metadata spec
present on origin.
2. **SLICE-0 (doc-only).** Read the spec's §7 delivery plan + the binding
`SPEC.md` §22.4a. Created an isolated worktree (`EnterWorktree`
`metadata-slice0-spec`).
- **Wrong turn (the §5.4 hazard):** the first SLICE-0 edits used **absolute
canonical paths** (`/Users/.../rfc-app/SPEC.md`) instead of the worktree
path, so they landed in the **canonical checkout on `main`**, not the
worktree. Caught by a grep showing the worktree copy unchanged. Recovered:
copied the edited file into the worktree, `git checkout -- SPEC.md` in
canonical. Logged as plugin feedback at session end (see Deferred decisions).
- Reframed §22.4a (entry metadata collection-configured, not type-driven; item-3
surfaces deferred; bdd coverage → future `ref` surface), reworded the two
§2/§22 forward-pointer blockquotes, fixed relative link paths. CHANGELOG
0.46.2 (patch — doc-only, no operator action), VERSION + package.json → 0.46.2.
- Shipped: branch → origin → Gitea-API **PR #30** → merge (`b1acc23`) → branch
deleted → worktree removed → `main` synced.
3. **SLICE-1 (code).** Fresh worktree (`metadata-slice1-sidecar`). Explored the
parser/cache/propose/migration surfaces (Explore agent). Wrote a just-in-time
plan (`docs/design/plans/2026-06-07-slice1-sidecar-storage.md`). Baseline:
backend 547 green. TDD throughout:
- `Entry.extra` + `from_frontmatter`/`to_frontmatter_dict` refactor in
`entry.py` (INV-7 unknown-key preservation).
- `app/metadata.py` — dual-read `read_entry` (INV-6), `parse_sidecar`,
`strip_frontmatter`, `sidecar_yaml`, idempotent `migrate_collection`.
- `gitea.change_files` (Gitea ChangeFiles batch) + FakeGitea route.
- cache `_refresh_collection_corpus` dual-reads the sidecar sibling; migration
`033_metadata_malformed.sql`; API surfaces `metadata_malformed`.
- Initially also built an Owner-gated `migrate-metadata` endpoint + bot wrapper.
4. **Code review (high-effort, multi-agent) — caught a foot-gun.** Two finder
agents found: (a) the migration endpoint rewrites `.md` to body-only, but every
write path (graduate / mark-reviewed / metadata+body edit / PR-replay) still
`entry.parse(<slug>.md)` directly → would crash / re-grow frontmatter on a
migrated entry; (b) dual-read dropped degenerate-sidecar entries (violating
INV-3); (c) graduation dropped `Entry.extra` (INV-7). Remediation:
- **Deferred the Owner-gated migrate endpoint to SLICE-4** (removed endpoint +
bot wrapper + its test); kept the migration *function* as tested groundwork
with no production trigger.
- Hardened `read_entry` with a `fallback_slug` (from filename stem) so a
malformed/empty/slug-less sidecar still loads + flags (INV-3), with tests.
- Fixed graduation to carry `extra` through, with a test.
- Recorded the write-path sites to fix in the design's SLICE-4 DoD.
- Gate: backend **575 passed**, frontend untouched. CHANGELOG 0.47.0 (minor,
additive; no operator action; migration not yet triggerable). Shipped: branch
→ origin → **PR #31** → merge (`98c276a`) → branch deleted → worktree removed
`main` synced.
5. **Post-goal.** Operator asked whether SLICE-0 had an impl plan (answer: no, by
design — §7.1 "SLICE-0 is doc-only, no implementation plan"). Operator then
asked how to prevent the worktree-path hazard in future sessions; recorded it
as plugin feedback (`wgl-dev-plugin-feedback``feedback/2026-06-07T08-36-
worktree-path-hazard.md`, plugin repo `cf50f2c`) with a proposed prose rule +
a deterministic PreToolUse guard.
## Cut state
- Origin `main` = `98c276a` @ **v0.47.0**. Working tree clean, synced, no open PRs.
- Backend 575 passing. Frontend unchanged.
- Both worktrees removed; both feature branches deleted local + origin.
- Memory updated: `project_rfc_app_multiproject.md` (+ `MEMORY.md` index) with the
SLICE-0/SLICE-1 shipped state and `Next /goal: SLICE-2`.
- **Not deployed:** OHM live @ v0.46.1; v0.46.2 + v0.47.0 are an undeployed gap
(tag+mirror to the benstull mirror before any deploy, per the OHM ops memory).
## Deferred decisions (autonomous low-confidence calls)
1. **SLICE-0 = patch (0.46.2), SLICE-1 = minor (0.47.0).** SLICE-0 reframes an
unbuilt contract item with no operator action → patch; SLICE-1 adds new
functionality, non-breaking → minor. Reasonable; flag if you'd version
differently.
2. **Deferred the migration operator endpoint to SLICE-4** (the review-driven
call). Judged it a clearly-preferred answer (don't ship a foot-gun that breaks
write paths), so proceeded without asking. The migration *function* ships
tested; nothing triggers it in production yet.
3. **Did SLICE-0 + SLICE-1 in one session** despite §7.1's "one slice per session"
convention — justified by the recorded goal bundling both. SLICE-2 onward
reverts to one-slice-per-session.
4. **Migration commits straight to main (no PR)** — modeled on the shipped
`bot.create_collection` (structural config). Moot until the endpoint ships.
5. **Did not deploy** v0.46.2 / v0.47.0. Left to the operator (deploy wasn't in
the goal). Undeployed gap noted.
6. **Tests run via the canonical backend `.venv` from the worktree CWD** (no
separate per-worktree venv) — pragmatic; imports resolve to the worktree code.
## Next session
```
/goal SLICE-2 — collection field schema + central validation, per docs/design/2026-06-06-configurable-collection-metadata.md §7.2
```
Read `project_rfc_app_multiproject.md` (top block) first. SLICE-2: parse a
`.collection.yaml` `fields:` block (`enum`/`tags`/`text`; future `ref`) in
`registry.parse_collection_manifest` (it already reads `enabled_models` into
`config_json` — add `fields:` alongside); add `metadata_schema.validate(values,
fields) → [problems]` (advisory at ingest → the existing `metadata_malformed`
flag, INV-3; enforced at the write boundary later, INV-4); serve the schema via
`GET …/collections/<c>`; no-`fields:` collections behave exactly as today (INV-5).
Take it as its own coding session (§7.1) with a just-in-time plan. **Gotchas:**
use an isolated worktree and **prefix every Edit/Write path with the worktree
root** (the §5.4 hazard hit this session); a concurrent session may share the
checkout.