feat: Implement Scheduler Worker Options and Planner Loop

- Added `SchedulerWorkerOptions` class to encapsulate configuration for the scheduler worker.
- Introduced `PlannerBackgroundService` to manage the planner loop, fetching and processing planning runs.
- Created `PlannerExecutionService` to handle the execution logic for planning runs, including impact targeting and run persistence.
- Developed `PlannerExecutionResult` and `PlannerExecutionStatus` to standardize execution outcomes.
- Implemented validation logic within `SchedulerWorkerOptions` to ensure proper configuration.
- Added documentation for the planner loop and impact targeting features.
- Established health check endpoints and authentication mechanisms for the Signals service.
- Created unit tests for the Signals API to ensure proper functionality and response handling.
- Configured options for authority integration and fallback authentication methods.

src/StellaOps.Authority/TASKS.md

@@ -2,10 +2,13 @@
 | ID | Status | Owner(s) | Depends on | Description | Exit Criteria |
 |----|--------|----------|------------|-------------|---------------|
 | AUTH-AOC-19-001 | DONE (2025-10-26) | Authority Core & Security Guild | — | Introduce scopes `advisory:read`, `advisory:ingest`, `vex:read`, `vex:ingest`, `aoc:verify` with configuration binding, migrations, and offline kit defaults. | Scopes published in metadata/OpenAPI, configuration validates scope lists, tests cover token issuance + enforcement. |
-| AUTH-AOC-19-002 | DOING (2025-10-26) | Authority Core & Security Guild | AUTH-AOC-19-001 | Propagate tenant claim + scope enforcement for ingestion identities; ensure cross-tenant writes/read blocked and audit logs capture tenant context. | Tenant claim injected into downstream services; forbidden cross-tenant access rejected; audit/log fixtures updated. |
+| AUTH-AOC-19-002 | DONE (2025-10-27) | Authority Core & Security Guild | AUTH-AOC-19-001 | Propagate tenant claim + scope enforcement for ingestion identities; ensure cross-tenant writes/read blocked and audit logs capture tenant context. | Tenant claim injected into downstream services; forbidden cross-tenant access rejected; audit/log fixtures updated. |
 > 2025-10-26: Rate limiter metadata/audit records now include tenants, password grant scopes/tenants enforced, token persistence + tests updated. Docs refresh tracked via AUTH-AOC-19-003.
-| AUTH-AOC-19-003 | TODO | Authority Core & Docs Guild | AUTH-AOC-19-001 | Update Authority docs and sample configs to describe new scopes, tenancy enforcement, and verify endpoints. | Docs and examples refreshed; release notes prepared; smoke tests confirm new scopes required. |
+> 2025-10-27: Client credential ingestion scopes now require tenant assignment; access token validation backfills tenants and rejects cross-tenant mismatches with tests.
+> 2025-10-27: `dotnet test` blocked — Concelier build fails (`AdvisoryObservationQueryService` returns `ImmutableHashSet<string?>`), preventing Authority test suite run; waiting on Concelier fix before rerun.
+| AUTH-AOC-19-003 | DONE (2025-10-27) | Authority Core & Docs Guild | AUTH-AOC-19-001 | Update Authority docs and sample configs to describe new scopes, tenancy enforcement, and verify endpoints. | Docs and examples refreshed; release notes prepared; smoke tests confirm new scopes required. |
 > 2025-10-26: Docs updated (`docs/11_AUTHORITY.md`, Concelier audit runbook, `docs/security/authority-scopes.md`); sample config highlights tenant-aware clients. Release notes + smoke verification pending (blocked on Concelier/Excititor smoke updates).
+> 2025-10-27: Scope catalogue aligned with `advisory:ingest/advisory:read/vex:ingest/vex:read`, `aoc:verify` pairing documented, console/CLI references refreshed, and `etc/authority.yaml.sample` updated to require read scopes for verification clients.
 
 ## Policy Engine v2
 
@@ -38,6 +41,7 @@
 | ID | Status | Owner(s) | Depends on | Description | Exit Criteria |
 |----|--------|----------|------------|-------------|---------------|
 | AUTH-VULN-24-001 | TODO | Authority Core & Security Guild | AUTH-GRAPH-21-001 | Extend scopes to include `vuln:read` and signed permalinks with scoped claims for Vuln Explorer; update metadata. | Scopes published; permalinks validated; integration tests cover RBAC. |
+> 2025-10-27: Paused work after exploratory spike (scope enforcement still outstanding); no functional changes merged.
 
 ## Orchestrator Dashboard
 
@@ -54,6 +58,8 @@
 | AUTH-CONSOLE-23-001 | TODO | Authority Core & Security Guild | AUTH-POLICY-20-001 | Register StellaOps Console confidential client with OIDC PKCE support, short-lived ID/access tokens, `console:*` audience claims, and SPA-friendly refresh (token exchange endpoint). Publish discovery metadata + offline kit defaults. | Client registration committed, configuration templates updated, integration tests validate PKCE + scope issuance, security review recorded. |
 | AUTH-CONSOLE-23-002 | TODO | Authority Core & Security Guild | AUTH-CONSOLE-23-001, AUTH-AOC-19-002 | Expose tenant catalog, user profile, and token introspection endpoints required by Console (fresh-auth prompts, scope checks); enforce tenant header requirements and audit logging with correlation IDs. | Endpoints ship with RBAC enforcement, audit logs include tenant+scope, integration tests cover unauthorized/tenant-mismatch scenarios. |
 | AUTH-CONSOLE-23-003 | TODO | Authority Core & Docs Guild | AUTH-CONSOLE-23-001, AUTH-CONSOLE-23-002 | Update security docs/config samples for Console flows (PKCE, tenant badge, fresh-auth for admin actions, session inactivity timeouts) with compliance checklist. | Docs merged, config samples validated, release notes updated, ops runbook references new flows. |
+> 2025-10-28: `docs/security/console-security.md` drafted with PKCE + DPoP (120 s OpTok, 300 s fresh-auth) and scope table. Authority Core to confirm `/fresh-auth` semantics, token lifetimes, and scope bundles align before closing task.
+| AUTH-CONSOLE-23-004 | TODO | Authority Core & Security Guild | AUTH-CONSOLE-23-003, DOCS-CONSOLE-23-012 | Validate console security guide assumptions (120 s OpTok TTL, 300 s fresh-auth window, scope bundles) against Authority implementation and update configs/audit fixtures if needed. | Confirmation recorded in sprint log; Authority config samples/tests updated when adjustments required; `/fresh-auth` behaviour documented in release notes. |
 
 ## Policy Studio (Sprint 27)
 
@@ -61,6 +67,7 @@
 |----|--------|----------|------------|-------------|---------------|
 | AUTH-POLICY-27-001 | TODO | Authority Core & Security Guild | AUTH-POLICY-20-001, AUTH-CONSOLE-23-001 | Define Policy Studio roles (`policy:author`, `policy:review`, `policy:approve`, `policy:operate`, `policy:audit`) with tenant-scoped claims, update issuer metadata, and seed offline kit defaults. | Scopes/roles exposed via discovery docs; tokens issued with correct claims; integration tests cover role combinations; docs updated. |
 | AUTH-POLICY-27-002 | TODO | Authority Core & Security Guild | AUTH-POLICY-27-001, REGISTRY-API-27-007 | Provide attestation signing service bindings (OIDC token exchange, cosign integration) and enforce publish/promote scope checks, fresh-auth requirements, and audit logging. | Publish/promote requests require fresh auth + correct scopes; attestations signed with validated identity; audit logs enriched with digest + tenant; integration tests pass. |
+> Docs dependency: `DOCS-POLICY-27-009` awaiting signing guidance from this work.
 | AUTH-POLICY-27-003 | TODO | Authority Core & Docs Guild | AUTH-POLICY-27-001, AUTH-POLICY-27-002 | Update Authority configuration/docs for Policy Studio roles, signing policies, approval workflows, and CLI integration; include compliance checklist. | Docs merged; samples validated; governance checklist appended; release notes updated. |
 
 ## Exceptions v1