fix(app): fix menu bar icon staying inactive during file processing

[pasrom]

Problem

The menu bar icon stayed .inactive in two cases:

1. File processing — no watchLoop exists, so currentBadge never checked the pipeline queue
2. State transitions — the timer guard (guard currentBadge.isAnimated) stopped ticking, so the icon could get stuck when transitioning from inactive to an active state

Fix

• currentBadge now checks pipelineQueue.activeJobs independently of watchLoop
• Timer always ticks every 0.4s — non-animated badges return cached frame 0, so there's no visual cost

Test plan

• Open file via "Process Audio/Video Files..." → icon animates during transcribing/diarizing/protocol
• Start manual recording via "Record App..." → icon shows recording animation immediately
• Icon transitions correctly between all states without getting stuck