Lightweight containerized prosody tooling + moved auth scripts + xmpp reconnect/auth stabilization

INSTALL.md

@@ -47,6 +47,13 @@ XMPP bridge settings:
 - `XMPP_PORT`
 - `XMPP_SECRET`
 
+Prosody container helpers:
+
+- `QUADLET_PROSODY_CONFIG_FILE`
+- `QUADLET_PROSODY_CERTS_DIR`
+- `QUADLET_PROSODY_DATA_DIR`
+- `QUADLET_PROSODY_LOGS_DIR`
+
 For XMPP media upload, configure one of:
 
 - `XMPP_UPLOAD_SERVICE`
@@ -144,6 +151,28 @@ make stop && make run
 - Confirm `XMPP_UPLOAD_SERVICE`/`XMPP_UPLOAD_JID` is set, or discovery works.
 - Check runtime logs for slot request and upload errors.
 
+### D) Prosody container (lightweight, no systemd)
+
+Use:
+
+```bash
+./utilities/prosody/manage_prosody_container.sh up
+./utilities/prosody/manage_prosody_container.sh status
+./utilities/prosody/manage_prosody_container.sh logs
+```
+
+Auth script path for Prosody config:
+
+```lua
+external_auth_command = "/code/utilities/prosody/auth_django.sh"
+```
+
+Certificate renewal helper (run as root on host):
+
+```bash
+./utilities/prosody/renew_prosody_cert.sh
+```
+
 ### C) Signal or WhatsApp send failures
 
 - Verify account/link status in service pages.