Change getAllTools() to return ToolInfo[] instead of string[]

Breaking change: pi.getAllTools() now returns Array<{ name, description }>
instead of string[]. Extensions needing just names can use .map(t => t.name).

Removes redundant getToolInfo() method added in original PR.

Fixes #647

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

@@ -685,7 +685,7 @@ export class InteractiveMode {
 					return this.sessionManager.getSessionName();
 				},
 				getActiveTools: () => this.session.getActiveToolNames(),
-				getAllTools: () => this.session.getAllToolNames(),
+				getAllTools: () => this.session.getAllTools(),
 				setActiveTools: (toolNames) => this.session.setActiveToolsByName(toolNames),
 				setModel: async (model) => {
 					const key = await this.session.modelRegistry.getApiKey(model);