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>

system/home/callrec/.config/systemd/user/aime-micgate.service

@@ -0,0 +1,15 @@
+[Unit]
+Description=CallRec mic noise-gate (PipeWire filter-chain: kills far-end self-echo)
+After=wireplumber.service pipewire-pulse.service
+Wants=wireplumber.service
+
+[Service]
+# Loads ~/.config/pipewire/filter-chain.conf.d/micgate.conf via the stock
+# filter-chain.conf boilerplate; creates the "micgate" Audio/Sink (LADSPA
+# gate_1410) whose output feeds the UAC2 gadget sink (Teams/Discord mic).
+ExecStart=/usr/bin/pipewire -c filter-chain.conf
+Restart=always
+RestartSec=2
+
+[Install]
+WantedBy=default.target