feat(catalog): class template editing

Templates were delete-and-recreate only. Adds PUT
/v1/catalog/class-templates/{id} across repository, service (sharing
the create-time validation), route, spec, and client; the classes tab
gets a pencil action that loads the row into the form with a
save/cancel affordance.

Generated with [Devin](https://devin.ai)

Co-Authored-By: Devin <158243242+devin-ai-integration[bot]@users.noreply.github.com>

packages/api-client/src/generated/types.ts

@@ -359,7 +359,7 @@ export interface paths {
             cookie?: never;
         };
         get?: never;
-        put?: never;
+        put: operations["updateClassTemplate"];
         post?: never;
         delete: operations["deleteClassTemplate"];
         options?: never;
@@ -2220,6 +2220,44 @@ export interface operations {
             };
         };
     };
+    updateClassTemplate: {
+        parameters: {
+            query?: never;
+            header?: never;
+            path: {
+                templateID: string;
+            };
+            cookie?: never;
+        };
+        requestBody: {
+            content: {
+                "application/json": components["schemas"]["UpsertClassTemplateRequest"];
+            };
+        };
+        responses: {
+            /** @description Updated class template */
+            200: {
+                headers: {
+                    [name: string]: unknown;
+                };
+                content?: never;
+            };
+            /** @description Invalid input */
+            400: {
+                headers: {
+                    [name: string]: unknown;
+                };
+                content?: never;
+            };
+            /** @description Template not found */
+            404: {
+                headers: {
+                    [name: string]: unknown;
+                };
+                content?: never;
+            };
+        };
+    };
     deleteClassTemplate: {
         parameters: {
             query?: never;