fix: Address critical issues from PR review

Fix 4 critical issues identified in code review:

**Error Handling Improvements:**
- Replace bare except blocks with specific exception handlers
- Add logging for TimeoutException and ConnectError
- Prevent silent failures in season loading
- Remove misleading "0 episodes" on error

**Robustness Fixes:**
- Add safe None handling in title comparison (main.py)
  Prevents crash when title is None
- Add URL validation before encodeURIComponent (anime.js)
  Prevents crash when anime.url is undefined
- Fix unreachable code in retry logic (recommendations.py)
  Preserve retry context in exception messages

**Changes:**
- animesama.py: Specific exception handling with print statements
- main.py: Safe None handling with (x.get('title') or '')
- anime.js: URL validation before encoding
- recommendations.py: Better exception messages with retry context

All fixes tested and working correctly.

Generated with [Claude Code](https://claude.ai/code)
via [Happy](https://happy.engineering)

Co-Authored-By: Claude <noreply@anthropic.com>
Co-Authored-By: Happy <yesreply@happy.engineering>

main.py

@@ -524,7 +524,7 @@ async def search_anime_unified(q: str, lang: str = "vostfr", include_metadata: b
     for provider_id in results:
         results[provider_id].sort(key=lambda x: (
             -x.get('_relevance_boost', 0),  # Exact matches first
-            x.get('title', '').lower().find(q.lower())  # Then by position of match
+            (x.get('title') or '').lower().find(q.lower())  # Then by position of match
         ))
         # Remove temporary boost field
         for item in results[provider_id]: