run fundamentals weekly, not daily — it's quarterly-ish data

Pulled the fundamental collector out of the daily pipeline (where it re-fetched
near-identical numbers every day and burned free-tier API quota) and made it an
independent weekly job. P/E/market-cap drift with price but the score buckets
them coarsely; revenue growth and earnings surprise only change at quarterly
earnings. Added "weekly" to the frequency map; fundamental_fetch_frequency now
defaults to weekly (configurable).

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>

app/services/admin_service.py

@@ -504,7 +504,6 @@ JOB_LABELS = {
 # Jobs driven by the daily_pipeline (in order) rather than their own timer.
 PIPELINE_MEMBERS = {
     "data_collector",
-    "fundamental_collector",
     "sentiment_collector",
     "rr_scanner",
     "outcome_evaluator",