feat: restore roast-of-the-day with 14-day prompt history

Separate roast generation from motivation again and pass cached roasts
from the last 14 days into the OpenRouter prompt to reduce repetition.

Co-authored-by: Cursor <cursoragent@cursor.com>

tools/regenerate_ai.py

@@ -1,12 +1,12 @@
 #!/usr/bin/env python3
-"""Regenerate cached AI texts (motivation)."""
+"""Regenerate cached AI texts (motivation, roast)."""
 
 from __future__ import annotations
 
 import argparse
 import asyncio
 
-from server.ai import generate_daily_motivation
+from server.ai import generate_daily_motivation, generate_roast_of_the_day
 from server.config_loader import load_meds_config
 from server.db import get_db
 
@@ -19,8 +19,10 @@ async def main() -> None:
     config = load_meds_config()
     db = await get_db()
     try:
-        result = await generate_daily_motivation(db, config.timezone, force=args.force)
-        print("motivation:", result)
+        motivation = await generate_daily_motivation(db, config.timezone, force=args.force)
+        roast = await generate_roast_of_the_day(db, config.timezone, force=args.force)
+        print("motivation:", motivation)
+        print("roast:", roast)
     finally:
         await db.close()