Harden policy simulation direct-route defaults

docs/implplan/SPRINT_20260310_006_FE_policy_simulation_direct_route_defaults_and_hydration.md

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+# Sprint 20260310-006 - FE Policy Simulation Direct Route Defaults and Hydration
+
+## Topic & Scope
+- Harden revived Policy Simulation surfaces so direct entry and partially wired host routes still render usable defaults instead of blank inputs.
+- Normalize missing policy pack, version, and target environment inputs across the revived lint, diff, coverage, and promotion-gate components.
+- Ensure the read-only coverage route hydrates on first render instead of waiting for a second interaction.
+- Working directory: `src/Web/StellaOps.Web/src/app/features/policy-simulation`.
+- Allowed coordination edits: `src/Web/StellaOps.Web/tsconfig.spec.features.json`, `docs/modules/ui/README.md`.
+- Expected evidence: focused component spec pass, authenticated live Playwright evidence for `/ops/policy/simulation` policy actions, updated UI docs if behavior changes.
+
+## Dependencies & Concurrency
+- Follows `SPRINT_20260309_019_FE_policy_simulation_active_tenant_runtime.md`; this sprint hardens the revived component surfaces after the tenant seam repair.
+- Safe parallelism: do not touch router readiness or unrelated search work while closing this slice.
+
+## Documentation Prerequisites
+- `AGENTS.md`
+- `docs/code-of-conduct/CODE_OF_CONDUCT.md`
+- `docs/qa/feature-checks/FLOW.md`
+- `docs/modules/ui/README.md`
+
+## Delivery Tracker
+
+### FE-POLICY-SIM-006-001 - Normalize revived policy simulation inputs and direct hydration
+Status: DONE
+Dependency: none
+Owners: Developer, QA
+Task description:
+- Centralize the fallback defaults used by revived Policy Simulation components so direct-entry routes and partially restored host callers do not pass through blank pack IDs, unusable versions, or empty target environments.
+- Cover the normalization behavior in focused specs for the shared defaults helper and the affected components, then re-run live authenticated policy actions with Playwright to prove the repaired runtime still behaves correctly.
+
+Completion criteria:
+- [x] Coverage, diff, lint, and promotion-gate components normalize missing/blank inputs to stable defaults instead of rendering unusable state.
+- [x] Coverage auto-loads on first render so the direct route is hydrated without a second click.
+- [x] Focused Angular specs prove the normalization and hydration behaviors.
+- [x] Authenticated Playwright completes the policy action sweep on `https://stella-ops.local` without new route or runtime failures.
+
+## Execution Log
+| Date (UTC) | Update | Owner |
+| --- | --- | --- |
+| 2026-03-10 | Sprint created after the remaining dirty `policy-simulation` slice was identified as a follow-on hardening pass for revived direct-route component defaults and coverage hydration. | Developer |
+| 2026-03-10 | Added shared policy simulation defaults plus a Vitest-compatible direct-route regression harness, rebuilt the web bundle, synced `dist/stellaops-web/browser` into `compose_console-dist`, and verified `/ops/policy/simulation/coverage`, `/lint`, `/promotion`, and `/diff/policy-pack-001` live with zero runtime errors via Playwright. | Developer |
+
+## Decisions & Risks
+- Decision: keep default restoration local to the revived Policy Simulation feature cluster through a shared helper instead of reintroducing per-component literals.
+- Decision: use a focused Vitest-compatible regression spec for the revived direct-route behaviors instead of widening the unsupported legacy ProxyZone/Karma component suite.
+- Risk: defaulting a missing pack/version can hide a wiring regression; mitigate with focused specs and live Playwright verification on the real shell.
+
+## Next Checkpoints
+- 2026-03-10: finish the focused spec coverage and live policy Playwright recheck.
+- 2026-03-10: commit the isolated policy-simulation hardening slice.