fix(coding-agent): ensure rg is downloaded at startup alongside fd

rg was only downloaded lazily when the grep tool was invoked, but the
LLM often uses rg directly via the bash tool. Ensure both fd and rg
are downloaded at startup so they are available in PATH for all tools.

fixes #1348

packages/coding-agent/src/modes/interactive/interactive-mode.ts

@@ -370,8 +370,10 @@ export class InteractiveMode {
 		// Load changelog (only show new entries, skip for resumed sessions)
 		this.changelogMarkdown = this.getChangelogForDisplay();
 
-		// Setup autocomplete with fd tool for file path completion
-		this.fdPath = await ensureTool("fd");
+		// Ensure fd and rg are available (downloads if missing, adds to PATH via getBinDir)
+		// Both are needed: fd for autocomplete, rg for grep tool and bash commands
+		const [fdPath] = await Promise.all([ensureTool("fd"), ensureTool("rg")]);
+		this.fdPath = fdPath;
 
 		// Add header container as first child
 		this.ui.addChild(this.headerContainer);