chore: decommission FMP, Finnhub and Alpha Vantage (A6)

The A5 cutover has been on and observed in production, so SEC Company Facts +
DoltHub earnings are already the live source for `fundamental_data`. This
removes everything the legacy path still occupied.

Gone: the three providers and their config/env keys; the weekly
`fundamental_collector` job; the cutover toggle (SEC + Dolt is now the
unconditional path, so `off` can no longer silently freeze scoring inputs); the
A5 parity report, whose deltas became structurally zero once the candidate
builder started writing the table it compared against; and the FMP tier of
universe bootstrap.

Two behavioral notes:

- Disabling **SEC Fundamentals Import** now stops the SEC network fetch only.
  The local cache refresh moved outside the job-enable check, because candidates
  also derive from daily closes and earnings events — freezing those on an
  ingestion pause would stale scoring with no fallback left to recover from.
- `/ingestion/fetch?sources=fundamentals` still accepts the key and reports
  `skipped`; there is no per-ticker fetch any more.

Migration 029 does not blanket-delete the leftover settings rows. Migrations run
before the service restart, and pre-A6 code reads an absent `job_*_enabled` row
as *enabled* — so the two behavior-bearing keys become tombstones pinned to safe
values (hidden in Admin) and only the inert three are deleted. Removing the
provider keys from the production `.env` is the matching rollout step.

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

frontend/src/components/admin/ScheduleSettings.tsx

@@ -8,11 +8,9 @@ const DEFAULTS: ScheduleConfig = {
   schedule_daily_pipeline_cron: '0 2 * * *',
   schedule_dolt_earnings_cron: '30 2 * * *',
   schedule_sec_fundamentals_cron: '0 4 * * *',
-  schedule_fundamentals_parity_cron: '30 5 * * *',
   schedule_near_close_pipeline_cron: '30 15 * * mon-fri',
   schedule_after_close_pipeline_cron: '45 16 * * mon-fri',
   schedule_intraday_pipeline_cron: '0 10-15 * * mon-fri',
-  schedule_fundamentals_cron: '0 1 * * mon',
 };
 
 const FIELDS: { key: keyof ScheduleConfig; label: string; hint: string; mono?: boolean }[] = [
@@ -30,19 +28,13 @@ const FIELDS: { key: keyof ScheduleConfig; label: string; hint: string; mono?: b
   {
     key: 'schedule_dolt_earnings_cron',
     label: 'Dolt earnings',
-    hint: 'Pull and import earnings dates/results daily at 02:30 ET. The activated cache refresh uses these local events.',
+    hint: 'Pull and import earnings dates/results daily at 02:30 ET. The fundamentals cache refresh uses these local events.',
     mono: true,
   },
   {
     key: 'schedule_sec_fundamentals_cron',
     label: 'SEC fundamentals',
-    hint: 'Import tracked-universe SEC facts daily at 04:00 ET and refresh the scoring cache when the cutover is active.',
-    mono: true,
-  },
-  {
-    key: 'schedule_fundamentals_parity_cron',
-    label: 'Fundamentals parity report',
-    hint: 'Read-only legacy vs SEC/Dolt comparison daily at 05:30 ET, after the bulk imports.',
+    hint: 'Import tracked-universe SEC facts daily at 04:00 ET, then refresh the fundamentals cache scoring reads. Disabling the job stops the SEC fetch only — the local cache refresh still runs.',
     mono: true,
   },
   {
@@ -63,12 +55,6 @@ const FIELDS: { key: keyof ScheduleConfig; label: string; hint: string; mono?: b
     hint: 'Refresh prices + resolve outcomes mid-session. Default hourly 10:00–15:00 ET weekdays.',
     mono: true,
   },
-  {
-    key: 'schedule_fundamentals_cron',
-    label: 'Legacy fundamentals (weekly)',
-    hint: 'Fallback provider chain. Automatically skipped while the SEC + Dolt cutover is active.',
-    mono: true,
-  },
 ];
 
 export function ScheduleSettings() {