refactor(coding-agent): restructured tool rendering to merge call and result displays

- Changed tool result rendering to merge call and result displays with tool arguments in headers across 13 tools.
- Added args parameter to render methods enabling display of contextual metadata like patterns, paths, and commands.
- Changed Read tool title to display line range when offset or limit arguments provided.
- Changed worker instantiation to use direct URL import instead of pre-bundled worker files.
- Removed streaming preview rendering logic from write tool.

packages/coding-agent/src/task/executor.ts

@@ -4,7 +4,6 @@
  * Runs each subagent in a Bun Worker and forwards AgentEvents for progress tracking.
  */
 
-import { homedir } from "node:os";
 import path from "node:path";
 import type { AgentEvent, ThinkingLevel } from "@oh-my-pi/pi-agent-core";
 import type { ModelRegistry } from "$c/config/model-registry";
@@ -39,21 +38,6 @@ import type {
 	SubagentWorkerResponse,
 } from "./worker-protocol";
 
-const workerBundlePromise: Promise<string> = (async () => {
-	const workerSrc = path.join(import.meta.dir, "worker.ts");
-	const bundlePath = path.join(homedir(), ".omp", "worker-bundle.js");
-	const result = await Bun.build({
-		entrypoints: [workerSrc],
-		target: "bun",
-		format: "esm",
-	});
-	if (!result.success) {
-		throw new Error(`Failed to bundle worker: ${result.logs.map((l) => l.message).join("\n")}`);
-	}
-	await Bun.write(bundlePath, await result.outputs[0].text());
-	return bundlePath;
-})();
-
 /** Options for worker execution */
 export interface ExecutorOptions {
 	cwd: string;
@@ -327,8 +311,7 @@ export async function runSubprocess(options: ExecutorOptions): Promise<SingleRes
 
 	let worker: Worker;
 	try {
-		const workerPath = await workerBundlePromise;
-		worker = new Worker(workerPath, { type: "module" });
+		worker = new Worker(new URL("./worker.ts", import.meta.url), { type: "module" });
 	} catch (err) {
 		return {
 			index,