Redesign NotesView: 2-tab model with batch cleanup

Replaces the 3-state Raw/Refined/Notes detail view with a clean 2-tab segmented picker (Transcript / Notes). Adds batch transcript cleanup via TranscriptCleanupEngine for on-demand refinement of past sessions.

Based on the design direction from @Newarr in PRs yazinsai#82 and yazinsai#83 — thank you for the original work! Reimplemented to keep drain() timeout at 5s and strip unrelated scope changes.

Closes yazinsai#82, closes yazinsai#83.

Add structured Markdown meeting output (openoats/v1)

Produces `.md` files in ~/Documents/OpenOats/ alongside existing `.txt` output.
YAML frontmatter with date, duration, participants, ASR engine, and meeting app.
Body sections: Summary, Action Items, Decisions, Transcript (high-signal first).
Speaker-attributed transcript lines with relative timestamps.

Three processing stages: raw transcript (always written at finalization),
LLM-enriched sections inserted when notes are generated. Existing .txt
output is preserved unchanged.

Includes format specification, example transcript, and 42 unit tests.

Closes no issues — new capability.

Derive isRecording from coordinator state machine

Replace writable stored `_isRecording` property with a computed property
that reads directly from the coordinator's authoritative `MeetingState`.
Eliminates stale-value risk from the 100ms polling loop.

Also adds `MeetingMetadata.manual()` static factory to deduplicate inline
metadata construction across call sites.

Extract service initialization for headless operation

Add ensureServicesInitialized() on AppRuntime with an idempotency guard.
Coordinator-owned services (TranscriptionEngine, TranscriptLogger,
RefinementEngine, AudioRecorder) are created on first call from wherever
runs first. ContentView.task now only creates view-local services
(KnowledgeBase, SuggestionEngine) that don't need to outlive the window.

…ement

LSUIElement=YES makes the app a permanent accessory with no menu bar
or dock icon. Toggle to .regular on launch and window show, .accessory
on window close. Standard pattern used by Bartender, MonitorControl, etc.

Add clearModelCache() to TranscriptionBackend protocol so corrupt model
files are removed on load failure. Each backend (Parakeet, Qwen3,
WhisperKit) implements targeted cache deletion. TranscriptionEngine now
clears cache and resets download state on failure, so "Download Now"
triggers a fresh download.

Add horizontal wordmark logo (icon + text) for marketing and documentation use. Contributed by @Alex-Wengg.

…yazinsai#95) (yazinsai#103)

Fix mic tap format failure and AEC conflict with system audio capture. Based on analysis from @brandonbloom in yazinsai#95.

* Derive isRecording from coordinator state machine

isRecording was a writable stored property set by ContentView's 100ms
polling loop. Any consumer outside that loop saw stale values when
the main window was hidden. Replace with a computed property that
reads directly from the coordinator's authoritative MeetingState.

Also add MeetingMetadata.manual() factory to eliminate duplicate
inline construction of manual session metadata.

* Extract service initialization for headless operation

TranscriptionEngine and other coordinator-owned services were created
inside ContentView.task, making background recording impossible without
a visible window. Add ensureServicesInitialized() on AppRuntime so
services can be created early from AppDelegate. ContentView.task now
only creates view-local services (KnowledgeBase, SuggestionEngine).

* Add menu bar status item and popover

NSStatusItem with two icon states: waveform.circle (idle) and
waveform.circle.fill (recording). Icon updates reactively via
withObservationTracking (zero wakeups when idle).

Popover shows live recording status with elapsed timer computed
from actual session start time, Start/Stop button with consent
gate, Show App, and Quit. Uses NSPopover with NSHostingController
for reliable sizing and focus behavior.

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Co-authored-by: Szymon Sypniewicz <szymonsypniewicz@szymons-mac.mynet>
Co-authored-by: Yazin's AI <github@mrfwd.com>