fix(scripts): repair broken sys.path setup in utility scripts

clear_cache.py and download_nba_logos.py pointed sys.path at a 'src'
directory relative to the script's own folder (scripts/utils/src and
scripts/src — neither exists), so both crashed on import; they now insert
the project root and import via the src package like the other scripts.
debug_web_manual.py resolved 'project root' to scripts/debug/ instead of
two levels up. fix_nhl_cache.sh is removed: it used Python docstring
syntax in a bash script and invoked clear_nhl_cache.py, which does not
exist anywhere in the repo — it cannot ever have worked in its current
location.

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01SXb4mKcAkVaxkeTb3YnAdr

scripts/utils/clear_cache.py

@@ -8,10 +8,10 @@ import os
 import sys
 import argparse
 
-# Add the src directory to the path so we can import our modules
-sys.path.insert(0, os.path.join(os.path.dirname(__file__), 'src'))
+# Add the project root to the path so we can import our modules
+sys.path.insert(0, os.path.dirname(os.path.dirname(os.path.dirname(os.path.abspath(__file__)))))
 
-from cache_manager import CacheManager
+from src.cache_manager import CacheManager
 
 def list_cache_keys(cache_manager):
     """List all available cache keys."""