Initial commit: OBS scene collection, profile, landing overlay

Tracked: scene JSON (Untitled + pre-migration backups), landing/
overlay (HTML + static-hum.wav), profile encoder/basic settings,
rtmp-services metadata, modules list, ini files, CLAUDE.md.

Ignored via .gitignore: stream keys (**/service.json), obs-websocket
password (plugin_config/obs-websocket/), logs/, profiler_data/,
.sentinel/, OBS-managed *.bak and *.json.v1 sidecars.

plugin_manager/modules.json

@@ -0,0 +1,13 @@
+[
+    {
+        "display_name": "",
+        "enabled": true,
+        "encoders": [],
+        "id": "",
+        "module_name": "linux-pipewire-audio",
+        "outputs": [],
+        "services": [],
+        "sources": [],
+        "version": ""
+    }
+]