feat(vault): Obsidian vault V2 — janitor, archival, weekly report, KB ingest, Bases + sync runbook (#482)

* feat(vault): V2 — create-seam + drift janitor, archival, weekly org-report, KB ingest, Bases views + sync runbook

Implements the vault V2 canonical spec end to end (the splice guard shipped
separately and is reused at KB-ingest time):

- materialize-on-create: TaskService.create writes each task's note best-effort
  from the moment it exists; the transition-touch stops no-oping on live work
- drift janitor (services/vault_janitor.py + hourly _vault_janitor_loop): daily
  changed-task re-projection, random drift sample, archival pass — restart-proof
  via RoboCo/_meta/.janitor_state.json, 200/cycle caps, per-item isolation,
  processed-only resume markers, self-repairing state file
- archival: vault_archive_days (30, 0=off) moves old terminal tasks' notes to
  RoboCo/Archive/<year>/Tasks/<project>/ — one write_task code path for janitor
  and rebuild, id8 lookup across Tasks/+Archive/, alias links keep moves safe
- weekly org-report: VaultWriter.write_org_report renders Reports/<ISO-week>.md
  from MetricsService/UsageService (numbers duplicated into frontmatter for
  trend queries), once per ISO week, with a best-effort CEO notification
- KB ingest: IndexType.VAULT_NOTES + VaultNotesIndexPlugin + _vault_kb_loop
  embed the CEO's RoboCo/Notes into the RAG corpus — injection guard as a hard
  gate (flagged notes quarantined with an idempotent callout), traversal- and
  symlink-contained at both config and engine layers, content-hash dedup,
  50-ingest/cycle cap, frontmatter stripped; reaches roboco_kb_search, the
  mentor default domain, claim-time briefings (kind vault_note), and the panel
  KB browser; no migration (chunks table auto-creates; migration 030's
  CHUNK_TABLES tuple appended per the chunks_playbooks precedent)
- Bases views (Task Board.base, Reports.base — schema verified against the
  Obsidian docs) + the Mac sync runbook vault asset
- config/flags/compose: vault_archive_days, vault_report_enabled (flags card),
  vault_kb_enabled (flags card; NAS compose arms it, registry ships it off),
  vault_kb_dirs (+ overlap/traversal validator), vault_kb_interval_seconds
- e2e smoke (tests/e2e_smoke/test_vault_v2.py): real create-seam, real janitor
  cycle incl. archival + state, real KB engine + real guard

* docs: vault V2 sweep — map, RAG corpus, CLAUDE.md

- docs/map/vault.md: V1+V2 — janitor/archival/report/KB data flows, new files,
  config, health posture
- docs/map/orchestrator.md + task-service.md: the two new loops, the create
  seam, the three janitor queries
- docs/rag/architecture/obsidian-vault.md: agent-facing what-changed (notes
  from creation, archive link-safety, CEO notes retrievable, weekly report)
- docs/rag/architecture/config-reference.md: the five new settings
- CLAUDE.md: vault paragraph covers V1+V2; flags-card list mentions the vault
  report/KB flags

---------

Co-authored-by: Renn F <rennf93@users.noreply.github.com>

docs/map/task-service.md

@@ -15,8 +15,12 @@
 |------|------|-----------|----------------|
 | `_validate_and_set_status` | method | task.py:548 | Single chokepoint: validate transition + git requirements, set status, poke dispatcher, emit audit. |
 | `_emit_status_transition_audit` | method | task.py:652 | Write `task.<status>` audit row in caller session; bump `revision_count` on entry into `needs_revision`. |
-| `create` | method | task.py:864 | New task; depth/batch/AC validation; branchless/umbrella flags; baseline constraints attachment. |
+| `create` | method | task.py:864 | New task; depth/batch/AC validation; branchless/umbrella flags; baseline constraints attachment; (V2) vault materialize-on-create. |
 | `_attach_baseline_constraints` | method | task.py:971 | Append conventions baseline constraints to task prompt (gated `conventions_enabled`). |
+| `_materialize_vault_note` | method | task.py:910 | V2: best-effort vault seam called from `create` — assembles + writes a deterministic task note (narrative placeholder) so a task is visible in the vault from the moment it exists, not just at Auditor curation/rebuild. Gated `obsidian_vault_enabled`; swallows + logs any failure. |
+| `list_updated_since` | method | task.py:7101 | V2: tasks touched (`COALESCE(updated_at, created_at)`) since a timestamp, ascending, paged — the vault janitor's changed-task re-projection set. |
+| `list_archive_candidates` | method | task.py:7124 | V2: terminal tasks whose terminal timestamp falls in `[after, before)`, ascending, paged — the vault janitor's archival-pass candidate window (watermark-bounded so a sweep never rescans the whole archive). |
+| `sample_stale_tasks` | method | task.py:7154 | V2: random sample of tasks last touched before a cutoff — the vault janitor's drift-verification sample. |
 | `activate` | method | task.py:1577 | `backlog→pending` (PM only); batch-shape guard. |
 | `_ensure_branch_for_task` | method | task.py:1675 | Branch resolution for claim; `""` for branchless/umbrella. |
 | `_auto_create_branch` | method | task.py:1833 | Cut hierarchical branch + per-task worktree add (F123). |