v0.20.0

Warning

This release contains known networking issues and should not be used.
Please upgrade to the latest hotfix release.

Changes in this version:

• Dual I/O backend: new standard tokio backend alongside io-uring; io-uring is now an optional feature flag, enabling support for platforms with older kernels
• Bluetooth: round-robin connection across multiple devices — each device gets a chance every round instead of exhausting all attempts on one before moving to the next
  thanks: @juggie
• Bluetooth: persist known AA devices to disk; wildcard connect (00:00:00:00:00:00) now uses a local cache of previously successful sessions instead of scanning all paired devices
  thanks: @juggie
• BT SCO/eSCO call-audio bridge (bt_sco) — route phone call audio through AA media/microphone channels; includes downlink resampling, echo/ducking control, and media/mic bridge sub-features
  thanks: @Deadknight
• Injected display support: cluster and auxiliary displays can now be declared in inject-displays.toml with per-profile frame rate, touchscreen flag, density, and initial_content_keycode
  thanks: @korhojoa, @Deadknight
• Media tap endpoint registry with on-demand reverse TCP bridge to companion app (POST /media-taps/:id/open)
  thanks: @Deadknight
• Album art injection: replace phone album art with a static file, REST-uploaded PNG, companion app upload, or a live H.264 frame decoded from an injected display
  thanks: @Deadknight
• Per-vehicle SDR UI override profiles (sdr-ui-overrides.toml) — patch content insets and margins per head unit identity, with optional per-phone sub-profiles
  thanks: @Deadknight
• Vendor Extension Channel (VEC) wired into packet processing pipeline; VEC REST calls and WebSocket topic events routed through WASM scripts
  thanks: @Deadknight
• WASM: scripts now persist state across calls; on-create/on-destroy lifecycle hooks; per-script config sections exposed in web UI; configurable resource limits (memory, instance, table, epoch deadlines); configurable hooks directory
  thanks: @Deadknight
• Packet debug mode (pkt_debug) with fine-grained filtering by side, stage, service kind, channel/message ID lists, payload truncation, and pretty-printed protobuf
  thanks: @Deadknight
• Config: nested sections with subsections, collapsed_by_default, requires dependency gating (truthy / equals / contains / all-of)
  thanks: @kronflux
• Config dashboard redesign: nested sections, dependency gating (requires), advanced toggle, dropdown selects, chip-based multi-select widget, dark card layout with sliding controller drawer
  thanks: @kronflux, @Deadknight
• dashboard-preview example binary for local web UI development
  thanks: @kronflux
• aa_server_tcp_addr config option for direct MD TCP mode, bypassing the BT/Wi-Fi handshake entirely
  thanks: @Deadknight
• REST endpoint GET /service-discovery-response — returns the last observed SDR as protobuf JSON
  thanks: @Deadknight
• REST endpoint GET /crashes, GET /crashes/:filename, DELETE /crashes — panic handler writes timestamped crash reports to disk
  thanks: @Deadknight
• POST /disconnect — sends a graceful ByeByeRequest to the phone before tearing down the session
  thanks: @korhojoa
• iw list called once at startup and cached — eliminates up to ~9 duplicate subprocess spawns during AppConfig::default()
• Configurable wireless subnet (wlan_subnet) — dnsmasq and network interface configs generated from templates
• Cancelled orphaned tcp_bridge tasks on session end to prevent background reconnect loops

Full Changelog: v0.19.0...v0.20.0
Full BR Changelog: aa-proxy/buildroot@5f30fb4...0fc356f