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/tools/write.ts

@@ -128,8 +128,6 @@ interface WriteRenderArgs {
 	content?: string;
 }
 
-const WRITE_STREAMING_PREVIEW_LINES = 12;
-
 function countLines(text: string): number {
 	if (!text) return 0;
 	return text.split("\n").length;
@@ -150,36 +148,6 @@ export const writeToolRenderer = {
 		const pathDisplay = filePath || uiTheme.format.ellipsis;
 		const status = options?.spinnerFrame !== undefined ? "running" : "pending";
 
-		if (args.content) {
-			const contentLines = args.content.split("\n");
-			const displayLines = contentLines.slice(-WRITE_STREAMING_PREVIEW_LINES);
-			const hidden = contentLines.length - displayLines.length;
-			const outputLines: string[] = [];
-			if (hidden > 0) {
-				outputLines.push(uiTheme.fg("dim", `${uiTheme.format.ellipsis} (${hidden} earlier lines)`));
-			}
-			outputLines.push(uiTheme.fg("dim", `${uiTheme.format.ellipsis} (streaming)`));
-
-			return {
-				render: (width: number) =>
-					renderCodeCell(
-						{
-							code: displayLines.join("\n"),
-							language: getLanguageFromPath(rawPath),
-							title: filePath ? `Write ${filePath}` : "Write",
-							status,
-							spinnerFrame: options?.spinnerFrame,
-							output: outputLines.join("\n"),
-							codeMaxLines: WRITE_STREAMING_PREVIEW_LINES,
-							expanded: true,
-							width,
-						},
-						uiTheme,
-					),
-				invalidate: () => {},
-			};
-		}
-
 		const text = renderStatusLine({ icon: status, title: "Write", description: pathDisplay }, uiTheme);
 		return new Text(text, 0, 0);
 	},
@@ -225,4 +193,5 @@ export const writeToolRenderer = {
 			invalidate: () => {},
 		};
 	},
+	mergeCallAndResult: true,
 };