more audit work

src/__Libraries/StellaOps.Provcache.Api/AGENTS.md

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+# Provcache API Library Charter
+
+## Mission
+- Provide API endpoints for Provcache operations and evidence retrieval.
+
+## Responsibilities
+- Validate inputs and pagination to avoid undefined behavior.
+- Keep responses deterministic and avoid leaking internal error details.
+- Preserve proof integrity verification ordering and hashing rules.
+
+## Required Reading
+- docs/modules/prov-cache/architecture.md
+- docs/modules/platform/architecture-overview.md
+
+## Working Directory & Scope
+- Primary: src/__Libraries/StellaOps.Provcache.Api
+
+## Testing Expectations
+- Add endpoint tests for pagination bounds, proof ordering, and error redaction.
+- Cover manifest generation and chunk verification edge cases.
+
+## Working Agreement
+- Update sprint status in docs/implplan/SPRINT_*.md and local TASKS.md.
+- Keep outputs deterministic and ASCII-only in comments/logs.

src/__Libraries/StellaOps.Provcache.Api/TASKS.md

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+# Provcache API Task Board
+
+This board mirrors active sprint tasks for this module.
+Source of truth: `docs/implplan/permament/SPRINT_20251229_049_BE_csproj_audit_maint_tests.md`.
+
+| Task ID | Status | Notes |
+| --- | --- | --- |
+| AUDIT-0098-M | DONE | Revalidated 2026-01-08; maintainability audit for Provcache.Api. |
+| AUDIT-0098-T | DONE | Revalidated 2026-01-08; test coverage audit for Provcache.Api. |
+| AUDIT-0098-A | TODO | Pending approval (revalidated 2026-01-08). |