integrate webserver into cli

pkgs/clan-cli/default.nix

@@ -1,5 +1,7 @@
 { age
 , argcomplete
+, fastapi
+, uvicorn
 , bubblewrap
 , installShellFiles
 , nix
@@ -22,7 +24,11 @@ let
   # evaluating the flake .#
   CLAN_OPTIONS_FILE = ./clan_cli/config/jsonschema/options.json;
 
-  dependencies = [ argcomplete ];
+  dependencies = [
+    argcomplete # optional dependency: if not enabled, shell completion will not work
+    fastapi
+    uvicorn # optional dependencies: if not enabled, webui subcommand will not work
+  ];
 
   testDependencies = [
     pytest
@@ -73,7 +79,7 @@ python3.pkgs.buildPythonPackage {
     wheel
   ] ++ testDependencies;
 
-  passthru.testDependencies = testDependencies;
+  passthru.testDependencies = dependencies ++ testDependencies;
 
   makeWrapperArgs = [
     "--set CLAN_FLAKE ${self}"