manual audit

[Menelion]

• Start manual audit: remove dead code, extract ChangeSource, consolidate file size formatter
• Remove UI-displayed strings for localizability
• Continue manual audit, move a table from core to database
• Replace null comparison with pattern matching
• Fix bugs in storage; Add Code Style Corrector subagent for Claude Code
• [WIP] fix sync engine
• Finish auditing sync engine; Add local change notifications
• Correct style with Claude agent

[codecov]

Codecov Report

❌ Patch coverage is 76.30597% with 127 lines in your changes missing coverage. Please review.
✅ Project coverage is 79.40%. Comparing base (968d964) to head (ae4703f).
⚠️ Report is 1 commits behind head on master.

Files with missing lines	Patch %	Lines
src/SharpSync/Storage/WebDavStorage.cs	32.80%	82 Missing and 2 partials ⚠️
src/SharpSync/Storage/SftpStorage.cs	58.53%	16 Missing and 1 partial ⚠️
src/SharpSync/Storage/S3Storage.cs	73.68%	7 Missing and 8 partials ⚠️
src/SharpSync/Sync/SyncEngine.cs	96.99%	2 Missing and 5 partials ⚠️
src/SharpSync/Storage/FtpStorage.cs	81.81%	2 Missing and 2 partials ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##           master      #58      +/-   ##
==========================================
+ Coverage   76.12%   79.40%   +3.27%     
==========================================
  Files          42       44       +2     
  Lines        4850     4850              
  Branches      684      716      +32     
==========================================
+ Hits         3692     3851     +159     
+ Misses        911      765     -146     
+ Partials      247      234      -13     

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