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>

app/api/prices.py

@@ -2,7 +2,12 @@ import logging
 from typing import List
 
 import httpx
-from fastapi import APIRouter, HTTPException, Query
+from fastapi import APIRouter, HTTPException, Query, Request
+from fastapi.responses import Response
+from slowapi import Limiter
+from slowapi.util import get_remote_address
+
+limiter = Limiter(key_func=get_remote_address)
 
 from app.config import settings
 from app.schemas import Candle
@@ -48,10 +53,13 @@ async def fetch_binance_candles(asset: str, tf: str, limit: int) -> List[Candle]
 
 
 @router.get("/prices/{asset}", response_model=List[Candle])
+@limiter.limit("30/minute")
 async def get_prices(
+    request: Request,
     asset: str,
     tf: str = Query(default="4H"),
     limit: int = Query(default=200, ge=1, le=1000),
+    response: Response = None,
 ):
     asset = asset.upper()
     if asset not in VALID_ASSETS:
@@ -59,12 +67,18 @@ async def get_prices(
     if tf not in VALID_TIMEFRAMES:
         raise HTTPException(status_code=400, detail=f"Timeframe must be one of {VALID_TIMEFRAMES}")
 
-    # 1m: use in-memory store (updated in real-time)
+    # 1m: use in-memory store (updated in real-time) — don't cache at CDN level
     if tf == "1m":
         candles = price_store.get_candles(asset, "1m", limit)
+        if response is not None:
+            response.headers["Cache-Control"] = "public, max-age=5, stale-while-revalidate=10"
         return [Candle(**c) for c in candles]
 
-    # All other timeframes: fetch directly from Binance
+    # Larger timeframes change infrequently — safe to cache longer
+    if response is not None:
+        ttl = 60 if tf in ("5m", "15m") else 300   # 1m for short TFs, 5m for 1H+
+        response.headers["Cache-Control"] = f"public, max-age={ttl}, stale-while-revalidate={ttl * 2}"
+
     try:
         return await fetch_binance_candles(asset, tf, limit)
     except Exception as exc: