feat(config): add federated tier + rename team→standalone (FED-M1-01) (#470)

docs/TASKS.md

@@ -28,7 +28,7 @@ These are MVP-level checks that don't belong to any single workstream. Updated b
 | MVP-T02 | done        | Archive install-ux-v2 mission state to `docs/archive/missions/install-ux-v2-20260405/`                   | IUV-M03 retroactively closed (shipped via PR #446 + releases 0.0.27→0.0.29)             |
 | MVP-T03 | done        | Land federation v1 planning artifacts on `main`                                                          | PR #468 merged 2026-04-19 (commit `66512550`)                                           |
 | MVP-T04 | not-started | Sync `.mosaic/orchestrator/mission.json` MVP slot with this manifest (milestone enumeration, etc.)       | Coord state file; consider whether to repopulate via `mosaic coord` or accept hand-edit |
-| MVP-T05 | not-started | Kick off W1 / FED-M1 — federated tier infrastructure                                                     | First execution task in MVP                                                             |
+| MVP-T05 | in-progress | Kick off W1 / FED-M1 — federated tier infrastructure                                                     | Session 16 (2026-04-19): FED-M1-01 in-progress on `feat/federation-m1-tier-config`      |
 | MVP-T06 | not-started | Declare additional workstreams (web dashboard, TUI/CLI parity, remote control, etc.) as scope solidifies | Track each new workstream by adding a row to the Workstream Rollup                      |
 
 ## Pointer to Active Workstream

docs/federation/TASKS.md

@@ -17,7 +17,7 @@ Goal: Gateway runs in `federated` tier with containerized PG+pgvector+Valkey. No
 
 | id        | status      | description                                                                                                                                                                                                        | issue | agent  | branch                          | depends_on | estimate | notes                                                                                                             |
 | --------- | ----------- | ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------ | ----- | ------ | ------------------------------- | ---------- | -------- | ----------------------------------------------------------------------------------------------------------------- |
-| FED-M1-01 | not-started | Extend `mosaic.config.json` schema: add `"federated"` to `tier` enum in validator + TS types. Keep `local` and `standalone` working. Update schema docs/README where referenced.                                   | #460  | codex  | feat/federation-m1-tier-config  | —          | 4K       | Schema lives in `packages/types`; validator in gateway bootstrap. No behavior change yet — enum only.             |
+| FED-M1-01 | in-progress | Extend `mosaic.config.json` schema: add `"federated"` to `tier` enum in validator + TS types. Keep `local` and `standalone` working. Update schema docs/README where referenced.                                   | #460  | sonnet | feat/federation-m1-tier-config  | —          | 4K       | Schema lives in `packages/types`; validator in gateway bootstrap. No behavior change yet — enum only.             |
 | FED-M1-02 | not-started | Author `docker-compose.federated.yml` as an overlay profile: Postgres 16 + pgvector extension (port 5433), Valkey (6380), named volumes, healthchecks. Compose-up should boot cleanly on a clean machine.          | #460  | codex  | feat/federation-m1-compose      | FED-M1-01  | 5K       | Overlay on existing `docker-compose.yml`; no changes to base file. Add `profile: federated` gating.               |
 | FED-M1-03 | not-started | Add pgvector support to `packages/storage/src/adapters/postgres.ts`: create extension on init (idempotent), expose vector column type in schema helpers. No adapter changes for non-federated tiers.               | #460  | codex  | feat/federation-m1-pgvector     | FED-M1-02  | 8K       | Extension create is idempotent `CREATE EXTENSION IF NOT EXISTS vector`. Gate on tier = federated.                 |
 | FED-M1-04 | not-started | Implement `apps/gateway/src/bootstrap/tier-detector.ts`: reads config, asserts PG/Valkey/pgvector reachable for `federated`, fail-fast with actionable error message on failure. Unit tests for each failure mode. | #460  | codex  | feat/federation-m1-detector     | FED-M1-03  | 8K       | Structured error type with remediation hints. Logs which service failed, with host:port attempted.                |

docs/scratchpads/mvp-20260312.md

@@ -305,3 +305,41 @@ Issues closed: #52, #55, #57, #58, #120-#134
 | Install-ux-v2 manifest + tasks + scratchpad + iuv-m03-design                           | moved to `docs/archive/missions/install-ux-v2-20260405/` with status corrected to complete |
 
 **Next:** PR `docs/mvp-mission-manifest` → merge to `main` → next session begins W1 / FED-M1 from clean state.
+
+---
+
+## Session 16 — 2026-04-19 — claude
+
+**Mode:** Delivery (W1 / FED-M1 execution)
+**Branch:** `feat/federation-m1-tier-config`
+**Context budget:** 200K, currently ~45% used (compaction-aware)
+
+**Goal:** FED-M1-01 — extend `mosaic.config.json` schema: add `"federated"` to tier enum.
+
+**Critical reconciliation surfaced during pre-flight:**
+
+The federation PRD (`docs/federation/PRD.md` line 247) defines three tiers: `local | standalone | federated`.
+The existing code (`packages/config/src/mosaic-config.ts`, `packages/mosaic/src/types.ts`, `packages/mosaic/src/stages/gateway-config.ts`) uses `local | team`.
+
+`team` is the same conceptual tier as PRD `standalone` (Postgres + Valkey, no pgvector). Rather than carrying a confusing alias forever, FED-M1-01 will rename `team` → `standalone` and add `federated` as a third value, so all downstream federation work has a coherent vocabulary.
+
+Affected files (storage-tier semantics only — Team/workspace usages unaffected):
+
+- `packages/config/src/mosaic-config.ts` (StorageTier type, validator enum, defaults)
+- `packages/mosaic/src/types.ts` (GatewayStorageTier)
+- `packages/mosaic/src/stages/gateway-config.ts` (~10 references)
+- `packages/mosaic/src/stages/gateway-config.spec.ts` (test references)
+- Possibly `tools/e2e-install-test.sh` (referenced grep) and headless env hint string
+
+**Worker plan:**
+
+1. Spawn sonnet subagent with explicit task spec + the reconciliation context above.
+2. Worker delivers diff; orchestrator runs `pnpm typecheck && pnpm lint && pnpm format:check`.
+3. Independent `feature-dev:code-reviewer` subagent reviews diff.
+4. Second independent verification subagent (general-purpose, sonnet) verifies reviewer's claims and confirms all `'team'` storage-tier references migrated, no `Team`/workspace bleed.
+5. Open PR via tea CLI; wait for CI; queue-guard; squash merge; record actuals.
+
+**Open items:**
+
+- `MVP-T04` (sync `.mosaic/orchestrator/mission.json`) still deferred.
+- `team` tier rename touches install wizard headless env vars (`MOSAIC_STORAGE_TIER=team`); will need 0.0.x deprecation note in scratchpad if release notes are written this milestone.