fix(insights): do not count a status run the bench sent nothing for

A status run whose whole chain was benched for background work sent no
request, yet the caller opened the note's negative window as for any
failure and raised its failure streak. The streak doubles the window up to
two hours, so a note kept waiting long after its provider recovered.

AllProvidersFailedError now says when no hop sent anything (sentNothing:
every provider benched, or refused by the operator cost cap). The status
chokepoint then holds the note for the first window without touching the
streak (holdStatusNoteWhileBenched), and the caller's own failure write
lands inside that window and neither moves nor counts it. A run that
reached a provider counts as before.

Refs #1279

src/__tests__/baselines/source-function-lines.json

@@ -1,7 +1,7 @@
 {
   "$comment": "Production functions over 200 lines, keyed \"file :: name\", and their length. Maintained by src/__tests__/source-size-ratchet.test.ts.",
   "count": 350,
-  "total": 113326,
+  "total": 113317,
   "entries": {
     "app/achievements/page.tsx :: AchievementsPage": 206,
     "app/api/admin/backups/upload/route.ts :: apiHandler(arg)": 314,
@@ -297,7 +297,7 @@
     "lib/insights/comprehensive-generate.ts :: generateComprehensiveInsight": 876,
     "lib/insights/features.ts :: extractFeatures": 796,
     "lib/insights/mood-aggregates.ts :: fetchMoodAggregates": 246,
-    "lib/insights/status-provider.ts :: runStatusCompletion": 224,
+    "lib/insights/status-provider.ts :: runStatusCompletion": 215,
     "lib/integrations/connection-health-load.ts :: loadConnectionFacts": 227,
     "lib/integrations/status.ts :: recordSyncFailure": 292,
     "lib/jobs/apple-health-import-worker.ts :: handleAppleHealthImport": 300,