fix(insights): mount InsightAdvisorCard on /insights page (wire B5c/d/e + B1b polish to live route)

The /insights page rendered only the text-only InsightStatusCard per
section, hiding all of B5c (rec rationale + mini-chart), B5d (confidence
meter), B5e (thumbs feedback) and the broader B1b polish from users.
Wave-D design review flagged this as CRITICAL C1.

Wires the InsightAdvisorCard component into the live route, consuming
the existing /api/insights/generate POST. The route already returns the
24h-cached payload without burning a rate-limit token, so a single
POST-without-force is functionally a GET-or-generate — no new API
surface needed (the reconcile report deferred C1 because it assumed
otherwise).

The cache is shared with the dashboard preview via the new
queryKeys.insightsAdvisor() so a regenerate on either surface refreshes
the other without a second LLM call.

Per-section InsightStatusCards stay below as supplemental detail; the
hero now also wires its regenerate button to the same handler.

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

src/lib/query-keys.ts

@@ -22,6 +22,14 @@ export const queryKeys = {
   insightsRoot: () => ["insights"] as const,
   insightsComprehensive: () => ["insights", "comprehensive"] as const,
   insightsTargets: () => ["insights", "targets"] as const,
+  /**
+   * v1.4.16 phase D reconcile (CRITICAL C1 + C2) — shared cache key for
+   * the rich `/api/insights/generate` advisor payload. Both `/insights`
+   * (full `<InsightAdvisorCard>`) and `/` (`<InsightsCardPreview>`) read
+   * this key so a regenerate on one surface refreshes the other without
+   * a second LLM round-trip.
+   */
+  insightsAdvisor: () => ["insights", "advisor"] as const,
   insightsGeneralStatus: (locale: string) =>
     ["insights", "general-status", locale] as const,
   insightsBpStatus: (locale: string) =>