feat: ship v0.7.0 with AI knowledge context integration

Add semi-automatic knowledge suggestions and user-confirmed injection across chat, interactive, auto, and wizard modes; fix writing flows to persist full systemPrompt in contextJson.

Co-authored-by: Cursor <cursoragent@cursor.com>

tests/main/wizard-preview.test.ts

@@ -26,11 +26,17 @@ describe('WizardWritingService.buildPreview', () => {
     })
     flow = svc.setRhythm(flow.id, 'mixed')
     flow = svc.setPov(flow.id)
-    flow = svc.confirmContext(
-      flow.id,
-      { chapterIds: [], outlineIds: [], settingIds: [], inspirationIds: [] },
-      CONTEXT
-    )
+    flow = svc.confirmContext(flow.id, {
+      binding: {
+        chapterIds: [],
+        outlineIds: [],
+        settingIds: [],
+        inspirationIds: [],
+        knowledgeIds: []
+      },
+      systemPrompt: CONTEXT,
+      contextSummary: '0章·0纲·0设·0感·0知'
+    })
 
     const preview = await svc.buildPreview(flow.id, CONTEXT, '林远')
     expect(preview).toMatch(/<p>/)