v0.9.0

• Echo now discovers Linux microphones through native PipeWire or PulseAudio before falling back to ALSA, so Bluetooth, USB, and built-in sources use the same recognizable names exposed by the desktop sound server.
• The normal microphone picker shows the Linux system default and primary input sources. Playback sinks, ALSA plugins, aliases, resamplers, and raw endpoint IDs remain available under Advanced audio endpoints.
• Speech setup is now one compact readiness card. Installed component paths and maintenance actions, alternative models, and inactive engine plans start collapsed without removing repair, verification, removal, system-runtime, or manual-model support.
• Settings now adapts cleanly at the 760-pixel minimum and across the navigation breakpoint. Pinned Chromium tests check eight widths in both themes for horizontal overflow and closed disclosures.
• Debian and RPM packages declare the PipeWire and PulseAudio runtime libraries, and release CI inspects the generated dependency metadata before publication.