DashBoard/openspec/changes/archive/2026-02-07-stability-and-frontend-compute-shift/tasks.md

1. P0 Runtime Resilience Baseline

• 1.1 Make database.py read and enforce runtime pool/timeouts from settings/env instead of hardcoded constants.
• 1.2 Add explicit degraded error mapping for pool exhaustion and circuit-open states (stable error codes + retry metadata).
• 1.3 Update API response handling so degraded errors are returned consistently across WIP/Resource/Dashboard endpoints.
• 1.4 Extend frontend MesApi retry/backoff policy to respect degraded error codes and avoid aggressive retries under pool exhaustion.

2. P0 Observability and Recovery Controls

• 2.1 Extend /health and /health/deep payloads with pool configuration, saturation indicators, and degradation reason classification.
• 2.2 Expose runtime-resilience diagnostics in admin status API for operations triage.
• 2.3 Ensure hot-reload/restart controls preserve single-port availability and return actionable status for watchdog-driven recovery.

3. P1 Cache and Query Efficiency (Keep Full-Table Cache)

• 3.1 Preserve resource/wip full-table cache as authoritative baseline while introducing indexed lookup helpers for high-frequency access paths.
• 3.2 Reduce repeated full-array merge cost in resource status composition by using prebuilt lookup/index structures.
• 3.3 Add cache version-coupled rebuild/update flow for derived indices and expose telemetry for index freshness.

4. P1 Frontend Compute Shift Expansion

• 4.1 Refactor compute-heavy display transformations into reusable frontend core modules.
• 4.2 Add parity fixtures/tests for newly shifted computations with explicit tolerance contracts.
• 4.3 Ensure migrated pages preserve existing tab/drill-down behavior while consuming shared Vite modules.

5. P2 Conda/Systemd/Watchdog Runtime Alignment

• 5.1 Align systemd service templates and runtime paths with conda-based execution model.
• 5.2 Align startup/deploy scripts, watchdog config, and documentation to a single runtime contract.
• 5.3 Define and document alert thresholds for sustained degraded state, restart churn, and retry pressure.

6. Validation and Migration Gates

• 6.1 Add/extend tests for pool exhaustion semantics, circuit-breaker fail-fast behavior, and degraded response contracts.
• 6.2 Add/extend tests for indexed cache access and frontend compute parity.
• 6.3 Update migration gate/runbook docs to include resilience checks, conda-systemd rehearsal, and rollback verification.