feat: auto-migrate SQLite data to Postgres on first deploy

- Add trumpsignal.db to git (one-time migration source)
- entrypoint.sh detects empty Postgres and runs migration automatically
- scripts/migrate_sqlite_to_postgres.py: posts, subscriptions, bot_trades
- Add psycopg2-binary to requirements for migration script

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

scripts/migrate_sqlite_to_postgres.py

@@ -0,0 +1,117 @@
+"""
+One-time migration: local trumpsignal.db (SQLite) → Postgres.
+Called automatically by entrypoint.sh on first deploy.
+Uses DATABASE_URL env var (same one uvicorn uses), just strips +asyncpg.
+"""
+import os
+import sqlite3
+import sys
+from datetime import datetime, timezone
+
+import psycopg2
+import psycopg2.extras
+
+SQLITE_PATH = os.path.join(os.path.dirname(__file__), '..', 'trumpsignal.db')
+
+raw_url = os.environ.get('DATABASE_URL', '')
+if not raw_url:
+    print("ERROR: DATABASE_URL not set")
+    sys.exit(1)
+
+# asyncpg URL → psycopg2 URL
+PG_URL = raw_url.replace('postgresql+asyncpg://', 'postgresql://')
+
+
+def parse_dt(v):
+    if v is None:
+        return None
+    if isinstance(v, (int, float)):
+        return datetime.fromtimestamp(v, tz=timezone.utc).replace(tzinfo=None)
+    for fmt in ('%Y-%m-%d %H:%M:%S.%f', '%Y-%m-%d %H:%M:%S'):
+        try:
+            return datetime.strptime(v, fmt)
+        except ValueError:
+            continue
+    return v
+
+
+def migrate():
+    sq = sqlite3.connect(SQLITE_PATH)
+    sq.row_factory = sqlite3.Row
+    pg = psycopg2.connect(PG_URL)
+    cur_sq = sq.cursor()
+    cur_pg = pg.cursor()
+
+    # ── posts ─────────────────────────────────────────────────────────────────
+    cur_sq.execute("SELECT * FROM posts")
+    posts = cur_sq.fetchall()
+    psycopg2.extras.execute_values(cur_pg, """
+        INSERT INTO posts (
+            id, external_id, text, source, published_at,
+            sentiment, ai_confidence, relevant,
+            price_impact_asset, price_impact_m5, price_impact_m15, price_impact_m1h,
+            price_at_post, signal, ai_reasoning, prefilter_reason,
+            analysis_version, created_at
+        ) VALUES %s ON CONFLICT (id) DO NOTHING
+    """, [(
+        r['id'], r['external_id'], r['text'], r['source'], parse_dt(r['published_at']),
+        r['sentiment'], r['ai_confidence'], bool(r['relevant']),
+        r['price_impact_asset'], r['price_impact_m5'], r['price_impact_m15'], r['price_impact_m1h'],
+        r['price_at_post'], r['signal'], r['ai_reasoning'], r['prefilter_reason'],
+        r['analysis_version'], parse_dt(r['created_at']),
+    ) for r in posts])
+    pg.commit()
+    print(f"  ✓ {len(posts)} posts")
+
+    # ── subscriptions ─────────────────────────────────────────────────────────
+    cur_sq.execute("SELECT * FROM subscriptions")
+    subs = cur_sq.fetchall()
+    psycopg2.extras.execute_values(cur_pg, """
+        INSERT INTO subscriptions (
+            id, wallet_address, hl_api_key, active, subscribed_at, created_at,
+            leverage, position_size_usd, take_profit_pct, stop_loss_pct, min_confidence
+        ) VALUES %s ON CONFLICT (id) DO NOTHING
+    """, [(
+        r['id'], r['wallet_address'], r['hl_api_key'],
+        bool(r['active']), parse_dt(r['subscribed_at']), parse_dt(r['created_at']),
+        r['leverage'] if r['leverage'] is not None else 3,
+        r['position_size_usd'] if r['position_size_usd'] is not None else 20.0,
+        r['take_profit_pct'], r['stop_loss_pct'],
+        r['min_confidence'] if r['min_confidence'] is not None else 80,
+    ) for r in subs])
+    pg.commit()
+    print(f"  ✓ {len(subs)} subscriptions")
+
+    # ── bot_trades ────────────────────────────────────────────────────────────
+    cur_sq.execute("SELECT * FROM bot_trades")
+    trades = cur_sq.fetchall()
+    psycopg2.extras.execute_values(cur_pg, """
+        INSERT INTO bot_trades (
+            id, asset, side, entry_price, exit_price, pnl_usd,
+            hold_seconds, trigger_post_id, wallet_address,
+            opened_at, closed_at, hl_order_id
+        ) VALUES %s ON CONFLICT (id) DO NOTHING
+    """, [(
+        r['id'], r['asset'], r['side'],
+        r['entry_price'], r['exit_price'], r['pnl_usd'],
+        r['hold_seconds'], r['trigger_post_id'], r['wallet_address'],
+        parse_dt(r['opened_at']), parse_dt(r['closed_at']), r['hl_order_id'],
+    ) for r in trades])
+    pg.commit()
+    print(f"  ✓ {len(trades)} bot_trades")
+
+    # ── reset sequences ───────────────────────────────────────────────────────
+    for table, col in [('posts', 'id'), ('subscriptions', 'id'), ('bot_trades', 'id')]:
+        cur_pg.execute(f"""
+            SELECT setval(pg_get_serial_sequence('{table}', '{col}'),
+                          COALESCE((SELECT MAX({col}) FROM {table}), 1))
+        """)
+    pg.commit()
+
+    sq.close()
+    pg.close()
+    print("✅ SQLite → Postgres migration complete")
+
+
+if __name__ == '__main__':
+    migrate()