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>

README.md

@@ -155,7 +155,7 @@ Hourly mid-session (Mon–Fri ~10:00–15:00 ET): only **OHLCV → Outcome Eval*
 
 ### Other jobs
 
-Fundamentals (weekly, early Monday ET) · Backtest (weekly) · Ticker-universe sync (daily). Alerts auto-fire only via the near-close pipeline (still manually triggerable). Deep history backfill and event study are manual-only (Admin → Jobs).
+Dolt earnings import (daily 02:30 ET) · SEC fundamentals import (daily 04:00 ET, also refreshes the fundamentals cache scoring reads) · Backtest (weekly) · Ticker-universe sync (daily). Alerts auto-fire only via the near-close pipeline (still manually triggerable). Deep history backfill and event study are manual-only (Admin → Jobs).
 
 ### From score to "top pick"
 
@@ -301,13 +301,13 @@ Corollaries: never let an unvalidated score gate setups; the outcome evaluator m
 | Charts | Canvas 2D candlestick chart with S/R overlays |
 | Routing | React Router v6 (SPA) |
 | HTTP | Axios with JWT interceptor |
-| Data providers | Alpaca (OHLCV); OpenAI / Gemini / DeepSeek / xAI (sentiment, pluggable); Fundamentals chain: FMP → Finnhub → Alpha Vantage; FRED (regime); Telegram (alerts) |
+| Data providers | Alpaca (OHLCV); OpenAI / Gemini / DeepSeek / xAI (sentiment, pluggable); SEC EDGAR Company Facts + DoltHub earnings (fundamentals, bulk import); FRED (regime); Telegram (alerts) |
 
 ## Features
 
 ### Backend
 - Ticker registry with full cascade delete
-- Universe bootstrap for `sp500`, `nasdaq100`, `nasdaq_all` via admin endpoint
+- Universe bootstrap for `sp500`, `nasdaq100`, `nasdaq_all` via admin endpoint — free public sources (Wikipedia / NASDAQ Trader), then the cached snapshot, then a built-in seed list. The seeds are representative, not complete, so a *fresh* install bootstrapped while the public source is unreachable gets a partial universe; a warm instance falls through to its cache.
 - OHLCV price storage with upsert and validation
 - Technical indicators: ADX, EMA, RSI, ATR, Volume Profile, Pivot Points, EMA Cross
 - Structural Support/Resistance detection with rejection/recency strength, ATR-adaptive merging and a hard cap; persisted for charts and alerts
@@ -583,18 +583,12 @@ Configure in `.env` (copy from `.env.example`):
 | `OPENAI_API_KEY` | For sentiment (OpenAI path) | — | OpenAI API key |
 | `OPENAI_MODEL` | No | `gpt-4o-mini` | OpenAI model name |
 | `OPENAI_SENTIMENT_BATCH_SIZE` | No | `5` | Micro-batch size for sentiment collector |
-| `FMP_API_KEY` | Optional (fundamentals) | — | Financial Modeling Prep API key (first provider in chain) |
-| `FINNHUB_API_KEY` | Optional (fundamentals) | — | Finnhub API key (fallback provider) |
-| `ALPHA_VANTAGE_API_KEY` | Optional (fundamentals) | — | Alpha Vantage API key (fallback provider) |
 | `FRED_API_KEY` | Optional (regime) | — | FRED key for the regime monitor (VIX, credit spreads) |
 | `TELEGRAM_BOT_TOKEN` | Optional (alerts) | — | Telegram bot token for alerts (can also be set in Admin) |
 | `TELEGRAM_CHAT_ID` | Optional (alerts) | — | Telegram chat id for alerts |
 | `DATA_COLLECTOR_FREQUENCY` | No | `daily` | OHLCV collection schedule (legacy — see note below) |
 | `SENTIMENT_POLL_INTERVAL_MINUTES` | No | `30` | Sentiment polling interval |
-| `FUNDAMENTAL_FETCH_FREQUENCY` | No | `weekly` | Fundamentals fetch cadence |
 | `RR_SCAN_FREQUENCY` | No | `daily` | R:R scanner schedule |
-| `FUNDAMENTAL_RATE_LIMIT_RETRIES` | No | `3` | Retries per ticker on fundamentals rate-limit |
-| `FUNDAMENTAL_RATE_LIMIT_BACKOFF_SECONDS` | No | `15` | Base backoff seconds for fundamentals retry (exponential) |
 | `DEFAULT_WATCHLIST_AUTO_SIZE` | No | `10` | Auto-watchlist size |
 | `DEFAULT_RR_THRESHOLD` | No | `1.5` | Minimum R:R ratio for setups |
 | `DB_POOL_SIZE` | No | `5` | Database connection pool size |