feat(comms): P1 presence — minimal Synapse + fleet presence room + mosaic.presence heartbeat + liveness (#888)

Co-authored-by: jason.woltje <jason@diversecanvas.com>
Co-committed-by: jason.woltje <jason@diversecanvas.com>

infra/matrix/synapse/log.config

@@ -0,0 +1,16 @@
+# Synapse DEV log config. DEV-ONLY.
+version: 1
+formatters:
+  precise:
+    format: '%(asctime)s - %(name)s - %(lineno)d - %(levelname)s - %(request)s - %(message)s'
+handlers:
+  console:
+    class: logging.StreamHandler
+    formatter: precise
+loggers:
+  synapse.storage.SQL:
+    level: WARNING
+root:
+  level: INFO
+  handlers: [console]
+disable_existing_loggers: false