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>

app/services/admin_service.py

@@ -17,7 +17,7 @@ from app.models.settings import SystemSetting
 from app.models.ticker import Ticker
 from app.models.trade_setup import TradeSetup
 from app.models.user import User
-from app.services import fundamental_data_refresh_service, settings_store
+from app.services import settings_store
 
 logger = logging.getLogger(__name__)
 
@@ -159,28 +159,6 @@ async def update_setting(db: AsyncSession, key: str, value: str) -> SystemSettin
     return setting
 
 
-# ---------------------------------------------------------------------------
-# Fundamentals source cutover
-# ---------------------------------------------------------------------------
-
-async def get_fundamentals_cutover_config(db: AsyncSession) -> dict[str, bool]:
-    """Return the explicit A5 cache-cutover switch (default off)."""
-    return {"enabled": await fundamental_data_refresh_service.is_enabled(db)}
-
-
-async def update_fundamentals_cutover_config(
-    db: AsyncSession, enabled: bool
-) -> dict[str, bool]:
-    """Activate or pause SEC/Dolt writes to the legacy fundamentals cache."""
-    await settings_store.upsert_setting(
-        db,
-        fundamental_data_refresh_service.ACTIVATION_KEY,
-        "true" if enabled else "false",
-    )
-    await db.commit()
-    return await get_fundamentals_cutover_config(db)
-
-
 # ---------------------------------------------------------------------------
 # Activation thresholds
 # ---------------------------------------------------------------------------
@@ -633,10 +611,8 @@ VALID_JOB_NAMES = {
     "data_backfill",
     "benchmark_collector",
     "sentiment_collector",
-    "fundamental_collector",
     "dolt_earnings_import",
     "sec_fundamentals_import",
-    "fundamentals_parity_report",
     "rr_scanner",
     "ticker_universe_sync",
     "outcome_evaluator",
@@ -657,10 +633,8 @@ JOB_LABELS = {
     "data_backfill": "Data Backfill (deep history)",
     "benchmark_collector": "Benchmark Collector",
     "sentiment_collector": "Sentiment Collector",
-    "fundamental_collector": "Fundamental Collector",
-    "dolt_earnings_import": "Dolt Earnings Import (shadow)",
+    "dolt_earnings_import": "Dolt Earnings Import",
     "sec_fundamentals_import": "SEC Fundamentals Import",
-    "fundamentals_parity_report": "Fundamentals Parity Report (read-only)",
     "rr_scanner": "R:R Scanner",
     "ticker_universe_sync": "Ticker Universe Sync",
     "outcome_evaluator": "Outcome Evaluator",
@@ -799,30 +773,3 @@ async def toggle_job(db: AsyncSession, job_name: str, enabled: bool) -> SystemSe
 
     key = f"job_{job_name}_enabled"
     return await update_setting(db, key, str(enabled).lower())
-
-
-def get_fundamentals_parity_report() -> dict | None:
-    """Return the latest compact A5 summary, if the job has run."""
-    from app.config import settings
-    from app.services.fundamentals_parity_service import load_latest
-
-    report = load_latest(settings.fundamentals_parity_report_dir)
-    if report is not None:
-        report.pop("rows", None)  # full per-ticker data is download-only
-    return report
-
-
-def get_fundamentals_parity_csv() -> tuple[str, str] | None:
-    """Return the latest A5 CSV filename and content for authenticated download."""
-    from app.config import settings
-    from app.services.fundamentals_parity_service import load_latest_csv
-
-    return load_latest_csv(settings.fundamentals_parity_report_dir)
-
-
-def get_fundamentals_parity_json() -> tuple[str, str] | None:
-    """Return the canonical A5 JSON artifact for authenticated download."""
-    from app.config import settings
-    from app.services.fundamentals_parity_service import load_latest_json
-
-    return load_latest_json(settings.fundamentals_parity_report_dir)