Add caldav

caldav/htpasswd

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+username:password

caldav/readme.md

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+
+
+how to make python portable
+
+https://chat.mistral.ai/chat/ab946d87-22e6-47d4-a99c-e8522c077347
+
+```
+wget https://www.python.org/ftp/python/3.13.7/Python-3.13.7.tgz
+tar -xzf Python-3.13.7.tgz
+rm Python-3.13.7.tgz
+cd Python-3.13.7
+./configure --enable-optimizations --with-ensurepip=install --prefix=$(pwd)/portable_python
+make -j$(nproc)
+make install
+cd ..
+mv Python-3.13.7/portable_python portable_python
+rm -rf Python-3.13.7 
+cd ..
+tar -czvf caldav.tar.gz caldav/
+```
+
+
+tar -xzf caldav.tar.gz

caldav/server.py

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+from radicale import Application, config
+from wsgiref.simple_server import make_server
+import os
+
+def run_server():
+    # Load default configuration
+    configuration = config.load()
+
+    # Customize settings
+    configuration.update({
+        "server": {
+            "hosts": "0.0.0.0:5232",  # Listen on all interfaces
+        },
+       
+        "storage": {
+            "filesystem_folder": "./calendars",  # Store calendars here
+        },
+        "auth": {
+            "type": "htpasswd",
+            "htpasswd_filename": "./htpasswd",  # Path to htpasswd file
+            "htpasswd_encryption": "autodetect",  # or "sha1", "md5" (bcrypt is most secure)
+        },
+      
+    })
+
+    # Create and run the app
+    app = Application(configuration=configuration)
+    server = make_server("0.0.0.0", 5232, app)
+    print("✅ Secure CalDAV server running on http://0.0.0.0:5232")
+    print("🔐 Authentication required. Default user: admin / password")
+    server.serve_forever()
+
+if __name__ == "__main__":
+    run_server()