Buzz Desktop v0.4.25

• fix(discovery): spawn PowerShell install commands natively on Windows (#2750) (f3981dbfe)
• fix(desktop): use augmented PATH for model discovery subprocess (#2753) (3bd3a014c)
• Improve huddle audio failure handling (#2578) (fb4a801ad)
• fix(onboarding): show real install errors and fix concurrent install state (#2658) (9731cd818)
• feat(node): add Windows managed Node.js fallback (win-x64 + win-arm64) (#2661) (596386ee5)
• fix(desktop): parse runtime team instructions section (#2645) (269ef357f)
• Match create-channel template selector styling (#2654) (72bbaece4)
• feat(desktop): make pull request reviews actionable (#2510) (9081ab0ec)
• fix(desktop): shared-compute usability — share toggle, usage indicator, model resync (#2448) (9cc9652c7)
• fix(desktop): refine focused thread dismissal targets (#2644) (c86c4f59c)
• Clarify agent harness defaults in create flow (#2601) (76aeae703)
• fix: expose community icon control on open relays (#2640) (e341b09cb)