Align mission control with shared context scope

docs/implplan/SPRINT_20260310_023_FE_mission_control_shared_context_scope_alignment.md

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+# Sprint 20260310-023 - FE Mission Control Shared Context Scope Alignment
+
+## Topic & Scope
+- Align Mission Control board and alert drilldowns with the shared Platform context so scoped sessions only surface matching environments and preserve tenant/region/environment state in downstream routes.
+- Keep the work inside the Mission Control feature and its focused regression specs, with only sprint coordination outside the Web working directory.
+- Working directory: `src/Web/StellaOps.Web`.
+- Allowed coordination edits: `docs/implplan/SPRINT_20260310_023_FE_mission_control_shared_context_scope_alignment.md`.
+- Expected evidence: focused Angular tests, a live authenticated Mission Control Playwright sweep, and rebuilt Web assets already synced into the running stack.
+
+## Dependencies & Concurrency
+- Depends on the authenticated local stack being reachable through `https://stella-ops.local`.
+- Depends on the frontdoor evidence routing fix in `SPRINT_20260310_022_Router_platform_v2_evidence_frontdoor_mapping.md` so downstream posture pages do not emit false Mission Control runtime failures.
+- Safe parallelism: do not mix unrelated layout/search cleanup into this commit.
+
+## Documentation Prerequisites
+- `AGENTS.md`
+- `docs/qa/feature-checks/FLOW.md`
+- `docs/implplan/SPRINT_20260310_003_FE_mission_control_live_action_sweep.md`
+
+## Delivery Tracker
+
+### FE-MISSION-SCOPE-001 - Align board environment selection with shared context
+Status: DONE
+Dependency: none
+Owners: QA, Developer, Product Manager
+Task description:
+- Remove the Mission Control board's drift from the shared Platform context so scoped sessions only show the matching environment cards and downstream topology/findings links inherit the correct region and environment.
+- Keep the implementation centered on the shared context store instead of duplicating local filter state inside the board component.
+
+Completion criteria:
+- [x] Mission Control board environment cards reflect the active `PlatformContextStore` region scope.
+- [x] Scoped downstream links from the board preserve the expected region and environment query state.
+- [x] Focused regression specs cover the shared-context behavior.
+
+### FE-MISSION-SCOPE-002 - Preserve alert drilldown scope when leaving Mission Control
+Status: DONE
+Dependency: FE-MISSION-SCOPE-001
+Owners: QA, Developer
+Task description:
+- Ensure Mission Control alert drilldowns merge the active query scope so Watchlist and adjacent surfaces do not drop the current tenant/region/environment window when the user pivots from alerts.
+
+Completion criteria:
+- [x] Mission Control alert links use merged query params where needed.
+- [x] Live Mission Control action sweep completes with zero failed actions and zero runtime issues.
+
+## Execution Log
+| Date (UTC) | Update | Owner |
+| --- | --- | --- |
+| 2026-03-10 | Sprint created after live Mission Control QA showed stage drilldowns resolving against the wrong region because the board was not honoring the active shared context scope. | Developer |
+| 2026-03-10 | Updated the board and alert drilldowns to rely on shared query scope, refreshed the focused specs, rebuilt/synced the Web assets, and reran `scripts/live-mission-control-action-sweep.mjs` cleanly with `failedActionCount=0` and `runtimeIssueCount=0`. | QA |
+
+## Decisions & Risks
+- Decision: Mission Control should consume the global context store instead of keeping a separate board-local region/window state. That avoids dual sources of truth and keeps deep links aligned with the rest of the shell.
+- Risk: other mission surfaces could still rely on stale local scope defaults.
+- Mitigation: keep expanding the live action sweeps for Mission Control-adjacent pages and add focused spec coverage whenever a new scope regression is found.
+
+## Next Checkpoints
+- Commit the Mission Control scope repair as its own FE iteration.
+- Continue into the next page-family action sweep on the rebuilt stack.