Frontend gaps fill work. Testing fixes work. Auditing in progress.

docs/modules/platform/implementation_plan.md

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+# Platform Module Implementation Plan
+
+## Purpose
+Provide a lightweight, living plan for platform-level capabilities, with the Platform Service as the primary delivery vehicle for cross-service aggregation needed by the Console UI and CLI.
+
+## Active work
+- `docs/implplan/SPRINT_20251229_043_PLATFORM_platform_service_foundation.md` (Platform Service foundation).
+
+## Near-term deliverables
+- `StellaOps.Platform.WebService` skeleton with health endpoint and auth wiring.
+- Aggregation endpoints for health, quotas, onboarding, preferences, and global search.
+- Deterministic caching behavior with "data as of" metadata for offline display.
+- Platform metadata endpoint and capability listing for UI bootstrapping.
+- Gateway registration and scoped access policies.
+- Unit + integration tests for ordering, caching, and error handling.
+- Postgres schema stub for platform state (`docs/db/schemas/platform.sql`).
+
+## Dependencies
+- Authority (identity, scopes, tenant claims).
+- Gateway/Router (route registration, auth headers, rate limits).
+- Orchestrator, Notifier, and storage services for aggregation inputs.
+
+## Evidence of completion
+- Service project under `src/Platform/StellaOps.Platform.WebService`.
+- Updated platform documentation and runbooks.
+- Postgres schema spec at `docs/db/schemas/platform.sql`.
+- Passing deterministic aggregation tests.
+
+## Reference docs
+- `docs/modules/platform/platform-service.md`
+- `docs/modules/platform/architecture.md`
+- `docs/modules/platform/architecture-overview.md`