Burrow 0.9.2

Burrow 0.9.2

A stability and battery release — several fixes to Cleanup, Analyze, and the
menu bar, plus a round of performance work that makes Burrow noticeably lighter
when it's sitting idle in the background.

Fixes

• Purge works again. Cleanup → Project build artifacts was refusing every
  removal ("Couldn't confirm the selection safely") because the engine renders
  its list with items pre-selected — Burrow now toggles the difference so your
  selection actually applies. (#231)
• Analyze no longer floods the machine with engine processes. Superseded
  scans are cancelled and concurrency is capped, so opening or refreshing the
  Analyze tab won't peg your CPU with a pile of analyze-go processes.
  (#232)
• Camera/mic in-use indicator is honest. It no longer false-lights from
  virtual audio/video devices (loopback, Camo, Teams, …) — e.g. playing audio
  through a virtual device — and clears reliably when capture ends.
  (#234)
• Menu-bar popover stays put instead of flying to a screen edge, and sizes
  to its own display on multi-monitor setups.
  (#223)
• Fewer spurious "App Hang" reports.

Performance & battery

• The metrics engine stops hammering the sensors when nothing is on screen.
  It used to read the SMC temperature/fan and GPU counters ~once a second for the
  whole time the app was running; those reads are now cached, and idle stream
  frames are skipped when no window is open — a real battery win.
  (#235, #237)
• Bounded Analyze memory (walk/icon caches now evict).
  (#236)
• System probes (Doctor, disk SMART, Time Machine) are timeout-guarded so a
  stuck system tool can't hang the pane; Doctor results are cached across reopens.
  (#239)
• Network-usage views share one sample instead of each running a 1-second scan.
  (#238)
• Smaller idle-timer and date-formatter cleanups.
  (#240)

Under the hood

• Dead-code prune; the Homebrew cask no longer depends on a system mole
  (the engine has been bundled since 0.9.0).