feat: komplette Codebase vom Board ins Repo gespiegelt

app/ = /opt/callrec (Node-Backend, Vite-Frontend, Python-Inferenz,
Audio-Skripte, rkllm_server.cpp), system/ = systemd-Units,
WirePlumber/PipeWire-Drop-ins, sudoers. Modelle, Binaries, Aufnahmen
und node_modules bleiben draussen (.gitignore).

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>

app/aime-volbridge.sh

@@ -0,0 +1,21 @@
+#!/bin/bash
+# Bridges USB gadget host volume (Windows slider) -> ES8323 sink volume/mute.
+# Host speaker volume appears on UAC2Gadget control numid=7 (PCM Capture Volume);
+# f_uac2 exposes it but does not scale samples, so we apply it here.
+set -u
+export XDG_RUNTIME_DIR=/run/user/1000
+CARD=UAC2Gadget
+SINK=alsa_output.platform-es8323-sound.stereo-fallback
+apply() {
+  local v m
+  v=$(amixer -c "$CARD" cget numid=7 2>/dev/null | awk -F= '/: values=/{print $2; exit}')
+  m=$(amixer -c "$CARD" cget numid=6 2>/dev/null | awk -F= '/: values=/{print $2; exit}')
+  [ -z "$v" ] && return 0
+  pactl set-sink-volume "$SINK" "${v}%" 2>/dev/null
+  case "$m" in
+    off|0) pactl set-sink-mute "$SINK" 1 2>/dev/null ;;
+    *)     pactl set-sink-mute "$SINK" 0 2>/dev/null ;;
+  esac
+}
+apply
+stdbuf -oL alsactl monitor hw:"$CARD" 2>/dev/null | while IFS= read -r _l; do apply; done