fix: restore coding history and quota feedback

tests/unit/pi-session-projector.test.ts

@@ -242,7 +242,7 @@ describe('Pi session projector', () => {
     expect(snapshot.cursor).toEqual({ workerGeneration: 1, seq: 7 });
   });
 
-  it('applies retained-tail compaction and reconciles durable entries without replacing live IDs', async () => {
+  it('projects the full active history around compaction and reconciles durable entries without replacing live IDs', async () => {
     const live: ConversationSnapshot = {
       ...baseSnapshot(),
       nodes: [
@@ -371,10 +371,11 @@ describe('Pi session projector', () => {
     });
 
     expect(snapshot.nodes.map(({ kind, id }) => ({ kind, id }))).toEqual([
-      { kind: 'compaction', id: 'live-compaction-a' },
+      { kind: 'message', id: 'entry:entry-old-user' },
       { kind: 'message', id: 'live-user-a' },
       { kind: 'message', id: 'live-assistant-a' },
       { kind: 'tool', id: 'live-tool-a' },
+      { kind: 'compaction', id: 'live-compaction-a' },
       { kind: 'message', id: 'entry:entry-after-user' },
     ]);
     expect(snapshot.nodes).toContainEqual(expect.objectContaining({
@@ -401,10 +402,55 @@ describe('Pi session projector', () => {
       compaction: 'idle',
       recalculating: true,
     });
-    expect(JSON.stringify(snapshot)).not.toContain('Summarized old question');
+    expect(JSON.stringify(snapshot)).toContain('Summarized old question');
     expect(JSON.stringify(snapshot)).not.toContain('summary must stay hidden');
   });
 
+  it('restores persisted Provider quota failures as safe actionable notices', async () => {
+    const snapshot = await projectPiSessionSnapshot({
+      snapshot: baseSnapshot(),
+      workerGeneration: 2,
+      state: { sessionId: 'pi-session-a', isStreaming: false, isCompacting: false },
+      entries: {
+        leafId: 'entry-quota-error',
+        entries: [
+          {
+            type: 'message',
+            id: 'entry-quota-user',
+            parentId: null,
+            message: { role: 'user', content: 'Continue', timestamp: 1 },
+          },
+          {
+            type: 'message',
+            id: 'entry-quota-error',
+            parentId: 'entry-quota-user',
+            message: {
+              role: 'assistant',
+              content: [],
+              stopReason: 'error',
+              errorMessage: '403: {"message":"词元点数余额不足","code":"token_point_balance_exhausted","request_id":"secret-request"}',
+              timestamp: 2,
+            },
+          },
+        ],
+      },
+    });
+
+    expect(snapshot.nodes).toContainEqual(expect.objectContaining({
+      kind: 'message',
+      id: 'entry:entry-quota-error',
+      status: 'error',
+    }));
+    expect(snapshot.nodes).toContainEqual({
+      kind: 'notice',
+      id: 'entry:entry-quota-error:provider-error',
+      code: 'CODING_PROVIDER_QUOTA_EXHAUSTED',
+      level: 'error',
+      message: '词元点数余额不足，请充值后重试。',
+    });
+    expect(JSON.stringify(snapshot)).not.toContain('secret-request');
+  });
+
   it('projects persisted images through attachment storage without retaining base64', async () => {
     const rawImage = 'A'.repeat(1024 * 1024);
     const projected = await projectPiSessionSnapshot({