huskies: merge 1142 story Force coder agents through MCP-validated Edit/Write/Bash to prevent writes to master worktree

server/src/http/mcp/tools_list/mod.rs

@@ -115,7 +115,9 @@ mod tests {
         assert!(names.contains(&"list_timers"));
         assert!(names.contains(&"cancel_timer"));
         assert!(names.contains(&"convert_item_type"));
-        assert_eq!(tools.len(), 83);
+        assert!(names.contains(&"edit"));
+        assert!(names.contains(&"write"));
+        assert_eq!(tools.len(), 85);
     }
 
     #[test]

server/src/http/mcp/tools_list/system_tools.rs

@@ -173,6 +173,50 @@ pub(super) fn system_tools() -> Vec<Value> {
                 "required": []
             }
         }),
+        json!({
+            "name": "edit",
+            "description": "Replace old_string with new_string in a file inside the agent's assigned worktree. Mirrors Claude's built-in Edit tool but validates that file_path is inside .huskies/worktrees/ to prevent writes to the master worktree. By default replaces the first occurrence only; set replace_all to true to replace every occurrence.",
+            "inputSchema": {
+                "type": "object",
+                "properties": {
+                    "file_path": {
+                        "type": "string",
+                        "description": "Absolute path to the file to edit. Must be inside .huskies/worktrees/."
+                    },
+                    "old_string": {
+                        "type": "string",
+                        "description": "The exact string to replace."
+                    },
+                    "new_string": {
+                        "type": "string",
+                        "description": "The replacement string."
+                    },
+                    "replace_all": {
+                        "type": "boolean",
+                        "description": "If true, replace every occurrence of old_string. Default: false (replace first occurrence only)."
+                    }
+                },
+                "required": ["file_path", "old_string", "new_string"]
+            }
+        }),
+        json!({
+            "name": "write",
+            "description": "Write content to a file inside the agent's assigned worktree, creating the file (and any missing parent directories) if necessary. Mirrors Claude's built-in Write tool but validates that file_path is inside .huskies/worktrees/ to prevent writes to the master worktree.",
+            "inputSchema": {
+                "type": "object",
+                "properties": {
+                    "file_path": {
+                        "type": "string",
+                        "description": "Absolute path to the file to write. Must be inside .huskies/worktrees/."
+                    },
+                    "content": {
+                        "type": "string",
+                        "description": "The content to write to the file."
+                    }
+                },
+                "required": ["file_path", "content"]
+            }
+        }),
         json!({
             "name": "git_status",
             "description": "Return the working tree status of an agent's worktree (staged, unstaged, and untracked files). The worktree_path must be inside .huskies/worktrees/. Push and remote operations are not available.",