Replace remaining empty catch blocks with descriptive comments

[wooo-jin]

~100 catch blocks in src/ previously used /* ignore */. Most have been fixed in #10, but any new ones should follow the same pattern:

• If debugLog is imported: use catch (e) { debugLog('module', 'what failed', e); }
• If not: add a specific comment explaining WHY it's safe to ignore

Files: grep -r 'catch.*ignore' src/
Difficulty: Easy