Phase 2: dashboard tabs + popups, chart fixes, shell relocation

Built via parallel Workflow (5 builders + adversarial verifiers), then
live-rendered and fixed in a headless browser against the running gateway.

Tabs (PrimeControls/Tabs/*):
- Overview: priority cards, KPI status row, alarm-rate timeline, insights, top-5
- Analysis: hour x day heatmap, priority donut vs ISA 80/15/5, MTTA/MTTR, floods
- BadActors: chattering/standing/fleeting tables, focus chip, AlarmDetail wiring
- Journal: paginated getJournalPage table, CSV export, EventDetail wiring

Popups (PrimeControls/Popups/*): HealthScore, ShiftReport, AlarmDetail, EventDetail

Chart fixes (verified rendering in-browser):
- Overview timeline: seeded dataSources.rate, switched to static fills, split
  flood bins into their own red stacked series (per-point deriveFieldsFromData
  fill was crashing render with React.cloneElement null).
- BadActors: removed the dual-axis Pareto XY chart (scaling was unusable);
  replaced with a ranked "Top Sources" table (share-of-total progress bar +
  cumulative %). Same insight, no axis scaling to break.

Structural / hygiene:
- Relocated Header + FilterBar from Dashboard/ to Shell/ and updated the two
  embed paths. A Perspective view cannot resolve sub-views nested inside another
  view's folder, so both were rendering as "view does not exist" placeholders.
- Set persistent:false on all view input params. persistent:true caused the
  gateway to bake the live bundle (with sim tag paths) into Tabs/Analysis on
  render; nulled that baked data and reset the session query range to 0.

lint_project.py: 0 failures / 0 warnings.

Verified in-browser: Overview, BadActors. NOT yet live-verified: Analysis,
Journal, and the four popups (schema-verified only). Header content is next
phase (renders now, but a benign cloneElement console warning remains).

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>

CONTRACT.md

@@ -207,7 +207,8 @@ Critical `#D64550`. Accent: `#3B7DD8`. Agents may ADD classes only under
 
 ## View ownership (Phase 2/3)
 
-A: `Dashboard/Header` + `Dashboard/FilterBar` · B: `Tabs/Overview` · C: `Tabs/Analysis` ·
+A: `Shell/Header` + `Shell/FilterBar` (relocated out of `Dashboard/` — a view cannot
+nest sub-views under another view's folder) · B: `Tabs/Overview` · C: `Tabs/Analysis` ·
 D: `Tabs/BadActors` · E: `Tabs/Journal` · F: `Popups/HealthScore`+`Popups/ShiftReport` ·
 G: `Popups/AlarmDetail`+`Popups/EventDetail` · H: `Components/HealthGauge` upgrade.
 Integrator-only: `Dashboard/view.json`, session-props, page-config, shared Components,