Initial commit: self-hosted SFP server deployment repository

Provides GitHub Actions workflows for customers to initialize, update,
and monitor their self-hosted SFP Pro server instances. Includes a
composite action for CLI installation from Gitea and SSH setup.

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

config/server-config.example.json

@@ -0,0 +1,15 @@
+{
+  "domain": "sfp.yourcompany.com",
+  "release_cadence": "production",
+  "cicdProvider": "github",
+  "workers": 1,
+  "auth": {
+    "useGlobalAuth": false
+  },
+  "supabase": {
+    "mode": "self-hosted"
+  },
+  "tlsMode": "custom",
+  "image_fqdn": "source.flxbl.io/flxbl/sfp-server",
+  "image_tag": "latest"
+}