fix: 7 bugs — parse_mode, /removeplayer, SNo>300, fd leak, warmup sleep, warmup range, dupe print

- cancel_sub: add parse_mode=MARKDOWN_V2 so users don't see literal backslashes
- /removeplayer: add CommandHandler that was advertised in /start but missing from handlers
- parse_standings: raise SNo limit 300→5000 to support large open tournaments
- call_bbp_with_checklist: close mkstemp fd to fix resource leak
- _warmup_cache_sync: make time.sleep(1.0) conditional on HTTP fetch, skip for cache hits
- _warmup_cache_sync: derive start_tnr from max(max_tnr_seen, max cached tnr) instead of hardcoded 1445000
- main: remove duplicate print('Client bot started') after blocking run_polling()

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

bots/tracker.py

@@ -753,17 +753,28 @@ async def warmup_cache(context):
 
 
 def _warmup_cache_sync():
-    """Scan the 1.4M cluster at step 1, caching ALL valid TNRs with players.
-    One-time cost ~40 min, then all searches are instant SQL queries.
+    """Scan ~12 000 TNRs from current max downwards, caching valid ones.
+    Starts from max(max_tnr_seen, max cached tnr, 1445000) so it stays current.
     Saves progress to tnr_state so it resumes after restart."""
     import time, sys, traceback
 
-    # Resume from saved progress
-    saved = int(get_tnr_state('warmup_tnr', '1445000'))
-    start_tnr = saved
-    print(f'warmup: resuming from TNR {saved}', file=sys.stderr)
+    # Resume from saved progress, or start from current max_tnr if fresh run.
+    # Default fallback kept so warmup doesn't probe 0 on a brand-new install.
+    saved_raw = get_tnr_state('warmup_tnr', '')
+    if saved_raw and saved_raw != 'done':
+        start_tnr = int(saved_raw)
+    else:
+        conn = _get_conn()
+        row = conn.execute('SELECT MAX(tnr) FROM tnr_cache').fetchone()
+        conn.close()
+        max_cached = row[0] if row and row[0] else 0
+        saved_state = int(get_tnr_state('max_tnr_seen', '1445000'))
+        start_tnr = max(max_cached, saved_state, 1445000)
+    end_tnr = max(1, start_tnr - 12000)
+    print(f'warmup: resuming from TNR {start_tnr} down to {end_tnr}', file=sys.stderr)
 
-    for tnr in range(start_tnr, 1433999, -1):
+    for tnr in range(start_tnr, end_tnr, -1):
+        already_cached = _get_cached_tnr(tnr) is not None
         try:
             _fetch_and_parse_art0(tnr)
         except Exception as e:
@@ -776,9 +787,9 @@ def _warmup_cache_sync():
             set_tnr_state('warmup_tnr', str(tnr))
         if tnr % 500 == 0:
             print(f'warmup: progress TNR {tnr} (started at {start_tnr})', file=sys.stderr)
-        # Rate-limit: ~1 req/sec to stay within chess-results.com daily limit.
-        # Cached TNRs return instantly (no HTTP), so this only applies to misses.
-        time.sleep(1.0)
+        # Rate-limit: only for HTTP fetches; cached hits return instantly.
+        if not already_cached:
+            time.sleep(1.0)
 
     # Mark warmup as complete — next run will see this and skip
     set_tnr_state('warmup_tnr', 'done')