Trim redundant source comments

packages/core/session/tests/surface.spec.ts

@@ -283,20 +283,17 @@ describe('SurfaceManager', () => {
 
   it('empty surface yields empty nodes', () => {
     const s = new Session(SessionId('empty'))
-    // Only turn boundaries, no surface nodes.
     s.append('turn/start', { turn: 1, trigger: { kind: 'message', source: { kind: 'user' } } })
     s.append('step/start', { turn: 1, step: 1 })
     s.append('step/end', { turn: 1, step: 1 })
     s.append('turn/end', { turn: 1, reason: { kind: 'completed' } })
     expect(s.surface.nodes.length).toBe(0)
-    // deriveMessages returns empty array
     expect(s.deriveMessages()).toEqual([])
   })
 
   it('picks up new events incrementally (delta processing)', () => {
     const s = surfaceSession()
     expect(s.surface.nodes.length).toBe(2)
-    // Append another surface node
     s.append('tool/result', { turn: 1, step: 1, callId: CallId('c1'), content: [{ type: 'text', text: 'ok' }], isError: false }, { surfaceOp: 'append' })
     expect(s.surface.nodes.length).toBe(3)
     expect(s.surface.nodes[2]!).toBe(4) // seq 4: after turn/end at seq 3
@@ -306,7 +303,6 @@ describe('SurfaceManager', () => {
     const original = surfaceSession()
     original.append('tool/result', { turn: 1, step: 1, callId: CallId('c1'), content: [{ type: 'text', text: 'ok' }], isError: false }, { surfaceOp: 'append' })
     const replayed = new Session(SessionId('replay'), [...original.events])
-    // Surface rebuilds from the seeded log's markers.
     expect(replayed.surface.nodes).toEqual([1, 2, 4])
     expect(replayed.deriveMessages()).toEqual(original.deriveMessages())
   })