Fix speaker cleanup and local model removal

[bigmacfive]

What changed

• trust the final diarization pass when provisional live labels over-split a meeting
• compact sparse speaker labels before writing Markdown
• add a two-step Settings action to remove downloaded models, runtime files, tools, caches, and retained recovery audio before uninstalling
• document the cleanup flow and bump the app to 0.5.3

Root cause

The local diarizer correctly reduced the reproduced 75-second sample from four provisional streaming slots to two final speakers, but the editor restored the four live labels because it treated every live boundary as more reliable than the final pass.

Validation

• pnpm check (176 frontend, 40 Rust, 69 Python/benchmark tests)
• focused speaker and cleanup UI tests
• temporary-directory resource deletion test
• pnpm build
• pnpm tauri:build:unsigned produced Ulpaso 0.5.3 app and DMG

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Project	Deployment	Actions	Updated (UTC)
ulpaso	Ready	Preview	Aug 15, 2026 12:13pm