feat(coding-runtime): add managed Pi extension host

tests/unit/pi-extension-ui-projector.test.ts

@@ -0,0 +1,44 @@
+// @vitest-environment node
+
+import { describe, expect, it } from 'vitest';
+import { PiExtensionUiProjector } from '../../electron/coding-runtime/pi/extension-ui-projector';
+
+describe('Pi extension UI projector', () => {
+  it('projects registered UI safely and refuses stale editor revisions', () => {
+    let draftRevision = 4;
+    const projector = new PiExtensionUiProjector({
+      getDraftRevision: () => draftRevision,
+      knownWidgetKeys: ['makelore.runtime'],
+    });
+    projector.beginRun('conversation-a', 1, 'run-1');
+    expect(projector.project('conversation-a', 1, 'run-1', {
+      type: 'extension_ui_request', id: 'status', method: 'setStatus',
+      statusKey: 'makelore.write-lease', statusText: '等待项目写入',
+    })).toMatchObject({ kind: 'status', key: 'makelore.write-lease' });
+    expect(projector.project('conversation-a', 1, 'run-1', {
+      type: 'extension_ui_request', id: 'draft', method: 'set_editor_text', text: 'new text',
+    })).toEqual({
+      kind: 'editor-text', conversationId: 'conversation-a', text: 'new text', draftRevision: 4,
+    });
+
+    draftRevision = 5;
+    expect(projector.project('conversation-a', 1, 'run-1', {
+      type: 'extension_ui_request', id: 'stale-draft', method: 'set_editor_text', text: 'overwrite',
+    })).toBeNull();
+    expect(projector.getDiagnostics()).toContainEqual({
+      method: 'set_editor_text', reason: 'stale-draft-revision',
+    });
+  });
+
+  it('records bounded diagnostics instead of projecting unknown widget payloads', () => {
+    const projector = new PiExtensionUiProjector({ getDraftRevision: () => 0 });
+    projector.beginRun('conversation-a', 1, 'run-1');
+    expect(projector.project('conversation-a', 1, 'run-1', {
+      type: 'extension_ui_request', id: 'unknown', method: 'setWidget',
+      widgetKey: 'third-party-widget', widgetLines: ['raw detail'],
+    })).toBeNull();
+    expect(projector.getDiagnostics()).toEqual([{
+      method: 'setWidget', reason: 'unsupported-ui-method',
+    }]);
+  });
+});