v6.8.47

Changelog

• 93fb841 Fixed: #1670
• ddcf1f2 Fixed: #1901
• 7e6bb8f Merge origin/dev into pr-1774-review and resolve watcher conflicts
• 9cee8ef Merge pull request #1684 from alexey-yanchenko/fix/input-audio-from-openai-to-antigravity
• b758842 fix: preserve input_audio content parts when proxying to Antigravity
• 30338ec perf(watcher): remove redundant auth clones in incremental path
• 10fa0f2 refactor(watcher): dedupe auth map conversion in incremental flow
• c83a057 refactor(watcher): make auth file events fully incremental
• dd44413 refactor(watcher): make authSliceToMap always return map
• 9a37def test(watcher): restore main test names and max-retry callback coverage