- [x] improve chrome cast subtitle rendering
    - native WebVTT style: white sans-serif, black outline, transparent background; physical-TV font-scale tuning remains unverified
- [x] currently, computer falls asleep even if video is playing. this should not be the case.
    - native playback activity prevents idle system sleep; local video keeps the display awake, casting allows screensaver/display sleep; native assertion checks and loopback Cast transitions passed, physical idle-TV verification remains unverified
- [x] add session-only local-file playlist support
    - multi-file Open/Finder/drop, natural filename order, editable queue sidebar, explicit append, previous/next and automatic advance; Cast navigation retains the receiver; UI/drag-drop and physical-Cast verification remain unverified
- [x] make sure the `make install` command installs the application (i can't find it in spotlight)
    - installs to ~/Applications, migrates the old hidden app, registers with Launch Services and requests Spotlight indexing; actual install, CLI, code signature, registration and Spotlight query passed; Spotlight UI remains unverified
- [x] takes an awfully long time seek in local videos which i find weird, since seeking in streamed youtube videos is pretty much instant
    - local seek preroll skips disposable non-reference pictures without sacrificing exact target frames; measured 1080p/10-second-GOP paused seek improved from 541 ms to 400 ms and playing seek from 682 ms to 488 ms; timestamp/pixel checks passed across six decoder formats; long-GOP reference decoding remains necessary, and the originally affected files still need manual verification
- [x] make the sidebar expand/collapse with a nice transition
    - synchronized 250 ms sidebar/window reveal, reversible mid-transition, with immediate Reduce Motion changes; top-right controls stay anchored to the moving window corner; native checks passed for rendered controls during transitions, stable video size, reversals, screen-edge fitting, fullscreen and compact restoration; animation feel and Reduce Motion still need manual verification
- [x] make the window draggable (in all cases/view states) so long as a button/clickable element is not hovered.
    - scoped native background dragging across start/playback/queue/error/Cast/compact views, with passive loading/audio overlays passing input through; 20 native input-routing probes passed, including controls and row-reorder exclusions; physical pointer dragging and Cast-screen interaction still need manual verification
- [x] on the start screen:
    - [x] make the youtube url input field that appears when clicking the youtube button appear with a nice transition
        - 200 ms fade/scale with animated row reflow; the button and ⇧⌘O toggle the same inline input, including while editing; native focus, draft-preservation and rapid-reversal checks cover mouse/shortcut interoperation
    - [x] change the youtube button to general streaming
        - Open Stream routes YouTube videos and explicit barelystarted.miruro.tv episode links; live Miruro video/audio and VTT seek checks passed, with shared validated source metadata and unchanged Tubular source/progress contracts; CLI handoff emitted v2 playback/end facts, but its GUI-state checker timed out without snapshots; physical UI/drop/Cast verification remains unverified
- [x] check whether we're using appropriately new apple ui APIs / SDKs for the project.
    - we should strive to use modern and idiomatic SDKs and APIs including SwiftUI among others
    - audited SDK 27.0 / Swift 6.4 with the macOS 15 minimum retained; migrated Cast discovery to NWBrowser and production activation to activate(). Real Bonjour identity/name/update/order/deduplication/removal/restart and routable-endpoint checks, loopback Cast transitions, focused startup-error alerts and a cooperating-launcher production smoke for cold start/CLI reuse/document handoff/keyboard playback passed. The existing full CLI snapshot-harness timeout remains; macOS 15 runtime and physical-Cast verification remain unverified. Observation, glass and the existing native bridges were left unchanged.
- [x] fix the readme. it's currently bloated with irrelevant implementation detail and other such nonsense. it should do the job of a readme only, nothing more.