storkit: merge 420_story_loc_for_a_specified_file_bot_command_and_web_ui_slash_command

server/src/http/mcp/diagnostics.rs

@@ -265,6 +265,17 @@ pub(super) fn tool_move_story(args: &Value, ctx: &AppContext) -> Result<String,
     .map_err(|e| format!("Serialization error: {e}"))
 }
 
+/// MCP tool: count lines in a specific file relative to the project root.
+pub(super) fn tool_loc_file(args: &Value, ctx: &AppContext) -> Result<String, String> {
+    let file_path = args
+        .get("file_path")
+        .and_then(|v| v.as_str())
+        .ok_or_else(|| "Missing required argument: file_path".to_string())?;
+
+    let project_root = ctx.state.get_project_root()?;
+    Ok(crate::chat::commands::loc::loc_single_file(&project_root, file_path))
+}
+
 #[cfg(test)]
 mod tests {
     use super::*;

server/src/http/mcp/mod.rs

@@ -1136,6 +1136,20 @@ fn handle_tools_list(id: Option<Value>) -> JsonRpcResponse {
                         },
                         "required": ["story_id"]
                     }
+                },
+                {
+                    "name": "loc_file",
+                    "description": "Return the line count for a specific file. Path is resolved relative to the project root. Returns an error if the file does not exist.",
+                    "inputSchema": {
+                        "type": "object",
+                        "properties": {
+                            "file_path": {
+                                "type": "string",
+                                "description": "Path to the file, relative to the project root (e.g. 'server/src/main.rs')"
+                            }
+                        },
+                        "required": ["file_path"]
+                    }
                 }
             ]
         }),
@@ -1226,6 +1240,8 @@ async fn handle_tools_call(
         "git_log" => git_tools::tool_git_log(&args, ctx).await,
         // Story triage
         "status" => status_tools::tool_status(&args, ctx).await,
+        // File line count
+        "loc_file" => diagnostics::tool_loc_file(&args, ctx),
         _ => Err(format!("Unknown tool: {tool_name}")),
     };
 
@@ -1342,7 +1358,8 @@ mod tests {
         assert!(names.contains(&"git_commit"));
         assert!(names.contains(&"git_log"));
         assert!(names.contains(&"status"));
-        assert_eq!(tools.len(), 49);
+        assert!(names.contains(&"loc_file"));
+        assert_eq!(tools.len(), 50);
     }
 
     #[test]