restructure: flatten project, add ARCHITECTURE.md, update DEVY.md

- Moved from session-analytics-web/ subfolder to root
- Renamed to token-analytics
- Added deploy.sh, ARCHITECTURE.md
- Moved export.mjs into jsonl-sync/

appsettings.json

@@ -0,0 +1,11 @@
+{
+  "Logging": {
+    "LogLevel": {
+      "Default": "Information",
+      "Microsoft.AspNetCore": "Warning"
+    }
+  },
+  "AllowedHosts": "*",
+  "Urls": "http://0.0.0.0:18684",
+  "DbPath": "jsonl-sync/sessions.db"
+}