feat(session): add pairing_approved table and getPairingStore()

src/session/store.test.ts

@@ -62,4 +62,42 @@ describe('SessionStore', () => {
     expect(sessions).toContain('session-a');
     expect(sessions).toContain('session-b');
   });
+
+  describe('pairing persistence', () => {
+    it('getPairingStore returns a PairingStore', () => {
+      const pairingStore = store.getPairingStore();
+      expect(pairingStore).toBeDefined();
+      expect(pairingStore.loadApproved).toBeInstanceOf(Function);
+      expect(pairingStore.saveApproved).toBeInstanceOf(Function);
+      expect(pairingStore.removeApproved).toBeInstanceOf(Function);
+    });
+
+    it('saveApproved and loadApproved round-trip', () => {
+      const ps = store.getPairingStore();
+      ps.saveApproved({ channel: 'telegram', senderId: '123', approvedAt: 1000, codeUsed: 'AABB11' });
+      ps.saveApproved({ channel: 'discord', senderId: '456', approvedAt: 2000, codeUsed: 'CC33DD' });
+      const loaded = ps.loadApproved();
+      expect(loaded).toHaveLength(2);
+      expect(loaded).toEqual(expect.arrayContaining([
+        expect.objectContaining({ channel: 'telegram', senderId: '123', codeUsed: 'AABB11' }),
+        expect.objectContaining({ channel: 'discord', senderId: '456', codeUsed: 'CC33DD' }),
+      ]));
+    });
+
+    it('removeApproved deletes a sender', () => {
+      const ps = store.getPairingStore();
+      ps.saveApproved({ channel: 'telegram', senderId: '123', approvedAt: 1000, codeUsed: 'AABB11' });
+      ps.removeApproved('telegram', '123');
+      expect(ps.loadApproved()).toHaveLength(0);
+    });
+
+    it('saveApproved upserts on duplicate channel+senderId', () => {
+      const ps = store.getPairingStore();
+      ps.saveApproved({ channel: 'telegram', senderId: '123', approvedAt: 1000, codeUsed: 'FIRST1' });
+      ps.saveApproved({ channel: 'telegram', senderId: '123', approvedAt: 2000, codeUsed: 'SECOND' });
+      const loaded = ps.loadApproved();
+      expect(loaded).toHaveLength(1);
+      expect(loaded[0].codeUsed).toBe('SECOND');
+    });
+  });
 });