feat(#2): BifrostState pane — GET /admin/sessions/{id}/bifrost (admin-key)

v1 coverage-audit: the last unbuilt design-brief §5 debug widget. First
admin-key consumer in ratatoskr.

- sessions.py: get_session_bifrost(client, session_id, *, admin_key) —
  admin-scoped (admin.sessions.read); the request overrides Authorization
  with admin_key (distinct from the consumer bearer). 200 -> dict, non-200
  -> SessionApiFailed (403 scope-denied, 404 not-bound).
- cli.py: --admin-key flag + RATATOSKR_ADMIN_API_KEY env -> ParsedArgs.admin_key.
- tui.py: new "Bifrost" TabPane + _format_bifrost_state + _hydrate_bifrost_state
  best-effort worker (unconditional on_mount). Writes {endpoint, connected,
  caps, tools} + audits; self-labels "not configured" / "not bound" / graceful
  on 403+error, never crashes.
- Contract #2 amended (FN, incl. the bearer-override POST) + validated. TDD:
  4 wrapper tests + 1 format unit + 3 hydrate integration. Suite 552 green.
- LIVE-AUTH-PROVEN on :8081 (admin key reached resource-layer 404, not 401/403).

Ledger correction: #11 (AdminEvents) is NO LONGER BLOCKED — the admin key
was verified to carry admin.events.read; only the pane is unbuilt. Coverage:
REST 11/40.

persistent-memory.md

@@ -158,6 +158,9 @@ decision. Captures rationale that won't be obvious from code alone.
 
 - `[2026-07-01]` **`GET /sessions/{id}/tools` quick-win SHIPPED (`v0.18.9`) — owner-scoped tool inventory in the TUI Tools pane.** `get_session_tools` wrapper (sessions.py, mirror get_me: 200→dict, non-200→`SessionApiFailed`) + `_format_tool_inventory` helper + `_hydrate_session_tools` best-effort worker (mirror `_hydrate_persona`) wired UNCONDITIONALLY in `on_mount` → writes the merged `{agent_id, builtin_tools, bifrost_tools}` inventory (what the LLM saw at turn-fire) to the Tools pane + audits `session_tools_hydrated`, never crashes on failure. Owner-scoped (`ctx.user_id==session.user_id`) → reachable with the CONSUMER key, NO admin scope — so this **covers the design-brief §5 "Tools widget" via the reachable owner endpoint** (the admin `/admin/sessions/{id}/tools` variant stays a gap only for cross-user operator debug). Contract #2 amended (FN, validated OK) + TDD (3 wrapper respx tests + 1 format-helper unit + 2 hydrate integration tests via `_spy_writes`+pilot). Suite **544 green**; touched code ruff-clean (the tui.py ruff/mypy debt at other lines is pre-existing). **Coverage: REST 10/40 ✅.** **Frontier now: BifrostState widget (`GET /admin/sessions/{id}/bifrost`, admin-key) + #11 AdminEvents (BLOCKED on `admin.events.read`) + Tier-2 (transient-characters routing, `POST /sessions/{id}/persona_state`).**
 
+- `[2026-07-01]` **BifrostState pane SHIPPED (`v0.18.10`) — `GET /admin/sessions/{id}/bifrost` in a new TUI "Bifrost" pane; the FIRST admin-key consumer in ratatoskr.** `get_session_bifrost(client, session_id, *, admin_key)` (sessions.py) — admin-scoped (`admin.sessions.read`); the request OVERRIDES Authorization with `admin_key` (distinct from the consumer bearer, asserted in a test); 200→dict, non-200→SessionApiFailed. Admin-key wiring: `--admin-key` flag + `RATATOSKR_ADMIN_API_KEY` env → new `ParsedArgs.admin_key`. New "Bifrost" TabPane + `_format_bifrost_state` + `_hydrate_bifrost_state` best-effort worker (mirror `_hydrate_session_tools`) UNCONDITIONALLY in on_mount → writes {endpoint, connected, caps_granted, tools} + audits; self-labels "not configured" (no admin key) / "not bound" (404) / graceful on 403 + error. Contract #2 amended (FN, validated OK) + TDD (4 wrapper respx tests incl. the admin-bearer-override assertion + 1 format unit + 3 hydrate integration). Suite **552 green**; my code ruff-clean (pre-existing tui.py ruff debt at other lines untouched, incl. a dead `RichText` import in `_hydrate_persona`). **LIVE-AUTH-PROVEN** on personal :8081: admin key authenticated (reached resource-layer 404 session_not_found, NOT 401/403) → `admin.sessions.read` works live; 200 full-state not exercised (no bound session on :8081 now — unit-covered). Patch bump (debug feature, no downstream coordination; consistent with the session's cadence — but the §5-core-completion angle is a possible minor, operator's call).
+- `[2026-07-01]` **LEDGER CORRECTION: #11 (AdminEvents) is NO LONGER BLOCKED.** Verified via `GET /me` on :8081 that `RATATOSKR_ADMIN_API_KEY` (`ratatoskr-readonly`, tier readonly-admin) carries ALL 7 read scopes INCLUDING **`admin.events.read`** (+ `admin.sessions.read`, admin.keys.read, admin.skuld.read, pending.read, search.read, tool_events.read). The coverage-map + prior memory had #11 "blocked on admin.events.read" — **STALE**; the admin key was minted (post-#11-filing, env.sh) WITH the scope, so the blocker is already satisfied. **Only the AdminEvents SSE pane itself is unbuilt** — the last unbuilt §5 debug pane (a live SSE-consuming admin pane, distinct from the hydrate-at-attach panes). Coverage-map updated. **Coverage: REST 11/40 ✅.** Consider building the AdminEvents pane and/or updating #11's tracker status (its stated blocker is gone).
+
 _41 older entries (2026-05-* — the original debug-TUI/web build era) archived to archival-memory.md._
 
 _For per-issue TDD implementation notes, Volva findings, and contract amendments, see the git log — every per-issue commit carries a structured message capturing the trail._