refactor(nix): simplify Nextcloud Claude Bot packaging

- Replaced `buildPythonApplication` with `python3.withPackages` for a cleaner and more concise implementation.
- Adjusted service configuration to use the updated packaging structure, ensuring compatibility with the new setup.
- Simplifies the NixOS module by reducing redundancy and improving maintainability.

systems/x86_64-linux/mx/nextcloud-claude-bot/module.nix

@@ -5,25 +5,16 @@ with lib;
 let
   cfg = config.services.nextcloud-claude-bot;
 
-  botScript = pkgs.python3Packages.buildPythonApplication {
-    pname = "nextcloud-claude-bot";
-    version = "0.1.0";
-    format = "other";
+  pythonEnv = pkgs.python3.withPackages (ps: with ps; [
+    fastapi
+    uvicorn
+    httpx
+  ]);
 
-    propagatedBuildInputs = with pkgs.python3Packages; [
-      fastapi
-      uvicorn
-      httpx
-    ];
-    
-    dontUnpack = true;
-    
-    installPhase = ''
-      mkdir -p $out/bin
-      cp ${./bot.py} $out/bin/nextcloud-claude-bot
-      chmod +x $out/bin/nextcloud-claude-bot
-    '';
-  };
+  botModule = pkgs.runCommand "nextcloud-claude-bot-module" {} ''
+    mkdir -p $out
+    cp ${./bot.py} $out/nextcloud_claude_bot.py
+  '';
 
 in {
   options.services.nextcloud-claude-bot = {
@@ -100,11 +91,12 @@ in {
         MAX_TOKENS = toString cfg.maxTokens;
         TIMEOUT = toString cfg.timeout;
         SYSTEM_PROMPT = cfg.systemPrompt or "";
+        PYTHONPATH = botModule;
       };
 
       serviceConfig = {
         Type = "simple";
-        ExecStart = "${pkgs.python3Packages.uvicorn}/bin/uvicorn nextcloud_claude_bot:app --host ${cfg.host} --port ${toString cfg.port}";
+        ExecStart = "${pythonEnv}/bin/uvicorn nextcloud_claude_bot:app --host ${cfg.host} --port ${toString cfg.port}";
         Restart = "always";
         RestartSec = 5;