Pre-launch hardening: KOL module, Telegram, scanners, WS resilience

Big-picture changes since b941223:

KOL pipeline (new) — Substack/podcast/blog RSS → AI ticker extraction →
on-chain wallet diff → talks-vs-trades divergence detection. Daily polls,
19 feeds, divergence emits Post + Telegram fan-out.

Telegram push (new) — walletless free tier + wallet-linked Pro upgrade,
in-bot preference commands (/trump /btc /funding /kol /conf /quiet),
signed-envelope API for dashboard. Disconnect-wallet keeps free
subscription.

BTC funding-rate reversal scanner (new) — hourly cron, 30d cumulative
funding threshold + mean-revert + 7d price confirm, emits via
/api/signals/ingest. BTC bottom-reversal scanner promoted to System 2.

WS broadcast rewrite — per-client send timeout + parallel fan-out
(asyncio.gather). Fixes "Binance WS no close frame" reconnect storms +
APScheduler 11-min job misses, both caused by one slow client stalling
the kline loop.

Error visibility — three silent-error sites (trumpstruth/truth_social
fetchers, funding_reversal scanner) now include exception type name so
httpx ConnectError-style empty-message errors stop logging blank lines.
Telegram bot loop now classifies ReadTimeout vs network vs unknown +
logger.exception for the unknown bucket.

Security hygiene — trumpsignal.db untracked from git (held subscriber
wallets + encrypted HL keys + 22 bot trades); .gitignore now blocks
*.db/.next/backups. CORS only allows FRONTEND_URL in production.

New ops scripts —
  - scripts/preflight.py: env/DB/Telegram/AI auth verification gate
  - scripts/backup_db.sh: cron-friendly daily DB backup (SQLite + Postgres)
  - scripts/seed_kol_wallets.py: idempotent KOL on-chain wallet seeder

15 new Alembic migrations (007-021) covering convex strategy fields,
phase-1 safety, two-system frozen exits, invalidation prices, dynamic
SYS2 leverage, staged de-risk + pyramiding, peak gain tracking, risk
mode, auto-trade + grow flags, KOL module, KOL on-chain, KOL divergence,
Telegram bindings + walletless.

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

alembic/versions/016_auto_trade_and_grow.py

@@ -0,0 +1,48 @@
+"""Simplified operator model: master Auto-Trade + per-trade Grow.
+
+  subscriptions.auto_trade : ONE persistent gate. OFF (default) = scan +
+      ingest signals (feed only), no trades. ON = auto-open on signal.
+  bot_trades.grow_mode     : per-trade pyramiding switch (default off).
+
+Defaults are safe (false) so existing rows do NOT auto-trade / auto-pyramid
+until the user explicitly opts in — no behavior change on upgrade.
+
+Revision ID: 016
+Revises: 015
+Create Date: 2026-05-18 00:00:00.000000
+"""
+
+from typing import Sequence, Union
+
+import sqlalchemy as sa
+from alembic import op
+from sqlalchemy import inspect
+
+revision: str = "016"
+down_revision: Union[str, None] = "015"
+branch_labels: Union[str, Sequence[str], None] = None
+depends_on: Union[str, Sequence[str], None] = None
+
+
+def _columns(table: str) -> set:
+    return {c["name"] for c in inspect(op.get_bind()).get_columns(table)}
+
+
+def upgrade() -> None:
+    if "auto_trade" not in _columns("subscriptions"):
+        with op.batch_alter_table("subscriptions") as b:
+            b.add_column(sa.Column("auto_trade", sa.Boolean(),
+                                   nullable=False, server_default=sa.false()))
+    if "grow_mode" not in _columns("bot_trades"):
+        with op.batch_alter_table("bot_trades") as b:
+            b.add_column(sa.Column("grow_mode", sa.Boolean(),
+                                   nullable=False, server_default=sa.false()))
+
+
+def downgrade() -> None:
+    if "grow_mode" in _columns("bot_trades"):
+        with op.batch_alter_table("bot_trades") as b:
+            b.drop_column("grow_mode")
+    if "auto_trade" in _columns("subscriptions"):
+        with op.batch_alter_table("subscriptions") as b:
+            b.drop_column("auto_trade")