feat(coding-agent): /reload now re-renders entire scrollback

For extension development, reloading now rebuilds the full chat history
so updated component rendering is visible immediately, not just in new
messages.

Also removes broken test for deleted chalk-logger.ts extension (npm
dependency resolution is already covered by with-deps test).

packages/coding-agent/CHANGELOG.md

@@ -23,6 +23,7 @@
 
 ### Changed
 
+- `/reload` now re-renders the entire scrollback so updated extension components are visible immediately
 - Skill, prompt template, and theme discovery now use settings and CLI path arrays instead of legacy filters ([#645](https://github.com/badlogic/pi-mono/issues/645))
 
 ### Fixed

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

@@ -3361,6 +3361,7 @@ export class InteractiveMode {
 			if (runner) {
 				this.setupExtensionShortcuts(runner);
 			}
+			this.rebuildChatFromMessages();
 			restoreEditor();
 			this.showLoadedResources({ extensionPaths: runner?.getExtensionPaths() ?? [], force: true });
 			const modelsJsonError = this.session.modelRegistry.getError();

packages/coding-agent/test/extensions-discovery.test.ts

@@ -297,19 +297,6 @@ describe("extensions discovery", () => {
 		expect(result.extensions[0].path).toContain("my-ext.ts");
 	});
 
-	it("resolves 3rd party npm dependencies (chalk)", async () => {
-		// Load the real chalk-logger extension from examples
-		const chalkLoggerPath = path.resolve(__dirname, "../examples/extensions/chalk-logger.ts");
-
-		const result = await discoverAndLoadExtensions([chalkLoggerPath], tempDir, tempDir);
-
-		expect(result.errors).toHaveLength(0);
-		expect(result.extensions).toHaveLength(1);
-		expect(result.extensions[0].path).toContain("chalk-logger.ts");
-		// The extension registers event handlers, not commands/tools
-		expect(result.extensions[0].handlers.size).toBeGreaterThan(0);
-	});
-
 	it("resolves dependencies from extension's own node_modules", async () => {
 		// Load extension that has its own package.json and node_modules with 'ms' package
 		const extPath = path.resolve(__dirname, "../examples/extensions/with-deps");