refactor: apply zero-unwrap policy and optimize locks in store.rs and handlers

dedup2.py

@@ -0,0 +1,14 @@
+import re
+
+with open("server/src/handlers.rs", "r", encoding="utf-8") as f:
+    text = f.read()
+
+pattern = r'"([a-zA-Z_]+)" => \{\s*(?:let req = parse_tool!\(args, id, ([a-zA-Z]+)\);\s*)?let data = serde_json::to_string\(&self\.state\.([a-zA-Z_]+)\.read\(\)\)\s*\.unwrap_or_else\(\|_\| "\[\]"\.to_string\(\)\);\s*Ok\(data\.to_string\(\)\)\s*\}'
+
+def repl(m):
+    return f'"{m.group(1)}" => {{\n    let data = serde_json::to_string(&self.state.{m.group(3)}.read()).unwrap_or_else(|_| "[]".to_string());\n    Ok(data)\n}},'
+
+new_text = re.sub(pattern, repl, text)
+
+with open("server/src/handlers.rs", "w", encoding="utf-8") as f:
+    f.write(new_text)