fix: pre-launch hardening — HYPE price feed, KOL wallet cleanup, Telegram Trump alert, rate limiting, brittle test

Batch of the pre-launch audit campaign (BUG-01…14 plus three new features):

Pricing / TP-SL protection
- Add app/services/hl_price_feed.py: supplemental HL allMids poller for
  HL-native assets (HYPE, PURR) not listed on Binance. Pumps price_store +
  tp_sl_monitor.on_price_tick so bot trades on these assets keep full
  stop-loss / take-profit / trailing protection instead of max-hold only.
- Wire feed into main.py lifespan (startup task + graceful shutdown cancel).

Telegram
- Add format_trump_mention + PATH B in _dispatch: crypto-relevant Trump
  posts with no directional signal (relevant=True, signal=hold) now alert
  the public channel only (no per-subscriber noise).
- Rate limiter (slowapi) on the API; assorted bot/digest fixes.

KOL on-chain
- seed_kol_wallets.py: KOL_FEEDS coverage cross-check; reversibly deactivate
  orphaned wallets (handle not in KOL_FEEDS → can never produce divergence)
  so the scanner stops burning cycles on them.

Tests / misc
- Fix brittle test_macro_ahr999_uses_same_formula_as_scanner: mock now uses
  realistic ms timestamps so the in-progress-day drop fires, matching the
  fetcher's bar count (was 0.3179 vs 0.3178 off-by-one).
- Refresh stale notify_signal comment in truth_social.py.

Frontend reduce-action type fix lives in the sibling repo.

Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>

scripts/backfill_signals.py

@@ -1,8 +1,12 @@
 """
-把 AI 信号写回数据库。
-跳过纯RT/URL帖子和已有signal的帖子。
-并发执行提速，自动限速避免API超限。
-用法: python scripts/backfill_signals.py [--limit 500] [--overwrite]
+Backfill AI analysis onto historical Truth posts.
+
+Safety rules:
+  * Only re-analyze `source='truth'` rows. Technical/scanner posts already
+    carry their own signal payloads and must not be sent through the Trump
+    text analyzer.
+  * Persist the full analysis payload so history doesn't become a mixed schema
+    of old partial rows and new v5 rows.
 """
 import asyncio
 import argparse
@@ -38,8 +42,11 @@ async def process_one(post: Post, semaphore: asyncio.Semaphore, overwrite: bool)
             p.relevant          = analysis["relevant"]
             p.prefilter_reason  = analysis.get("prefilter_reason")
             p.analysis_version  = analysis.get("analysis_version")
-            if analysis["relevant"] and analysis["asset"] and not p.price_impact_asset:
-                p.price_impact_asset = analysis["asset"]
+            p.price_impact_asset = analysis["asset"] if analysis["relevant"] else None
+            p.target_asset = analysis.get("target_asset")
+            p.category = analysis.get("category")
+            p.expected_move_pct = analysis.get("expected_move_pct")
+            p.invalidation_price = analysis.get("invalidation_price")
             await db.commit()
 
     sig = analysis["signal"]
@@ -49,7 +56,10 @@ async def process_one(post: Post, semaphore: asyncio.Semaphore, overwrite: bool)
 async def main(limit: int, overwrite: bool):
     async with AsyncSessionLocal() as db:
         result = await db.execute(
-            select(Post).order_by(Post.published_at.desc()).limit(limit)
+            select(Post)
+            .where(Post.source == "truth")
+            .order_by(Post.published_at.desc())
+            .limit(limit)
         )
         posts = result.scalars().all()