test: fix CI coverage + e2e for user/message coalescing

- tui.spec: exercise a goal-sourced injected context card (labels by
  source kind, not plugin name), closing the last uncovered branch in
  tui/src/index.ts that the CI coverage gate caught.
- time-context.e2e / goal.e2e: filter injected context by source now
  that it is a user/message (plugin/goal source), and count goal
  continuation rounds by round>0 rather than event type.

packages/context/time-context/tests/time-context.e2e.ts

@@ -48,7 +48,8 @@ describe('time-context through a real headless cordis.yml', () => {
     expect(stderr).not.toContain('UNHANDLED')
     expect(events.filter(event => event.type === 'turn/end')).toHaveLength(2)
 
-    const contexts = events.filter(event => event.type === 'user/message')
+    const contexts = events.filter(
+      (event): event is SessionEvent<'user/message'> => event.type === 'user/message' && event.data.source.kind === 'plugin')
     const starts = events.filter(event => event.type === 'step/start')
     expect(contexts).toHaveLength(2)
     expect(starts).toHaveLength(2)

packages/goal/goal/tests/goal.e2e.ts

@@ -69,7 +69,9 @@ describe('goal domain through a real cordis.yml and headless process', () => {
     })
     expect(context.data.content).toEqual(renderGoalChange(change))
     expect(JSON.stringify(context)).not.toContain('activation')
+    // No admitted continuation round ran (the snapshot mounts without starting
+    // a round); the round-zero state change from create is expected above.
     expect(events.filter(event => event.type === 'user/message'
-      && event.data.source.kind === 'goal')).toHaveLength(0)
+      && event.data.source.kind === 'goal' && event.data.source.round > 0)).toHaveLength(0)
   }, LOADER_SMOKE_TEST_TIMEOUT_MS)
 })

packages/ui/tui/tests/tui.spec.ts

@@ -395,6 +395,9 @@ describe('pi-tui chat lifecycle and transcript', () => {
     result.session.append('steering/message', { turn: 2, content: [{ type: 'text', text: '' }], source: { kind: 'user' } }, { surfaceOp: 'append' })
     result.session.append('user/message', { content: [{ type: 'text', text: 'user context' }], source: { kind: 'plugin', plugin: 'ctx' } }, { surfaceOp: 'append' })
     result.session.append('user/message', { content: [{ type: 'text', text: '' }], source: { kind: 'plugin', plugin: 'ctx' } }, { surfaceOp: 'append' })
+    // A non-plugin injected source (goal) has no `plugin` field, so its context
+    // card label falls back to the source kind.
+    result.session.append('user/message', { content: [{ type: 'text', text: 'goal context' }], source: { kind: 'goal', goalId: 'g1', revision: 1, round: 0 } as never }, { surfaceOp: 'append' })
     result.session.append('prompt/blocked', { content: [{ type: 'text', text: 'blocked' }], source: { kind: 'user' }, reason: 'test policy' })
     appendAssistant(result.session, [])
     result.session.append('step/end', { turn: 1, step: 1 })
@@ -475,6 +478,7 @@ describe('pi-tui chat lifecycle and transcript', () => {
     expect(result.terminal.output).toContain('Enter sends steering, Esc cancels')
     expect(result.terminal.output).toContain('Steering')
     expect(result.terminal.output).toContain('user context')
+    expect(result.terminal.output).toContain('Context · goal') // goal-sourced injected context labels by kind
     expect(result.terminal.output).toContain('Prompt blocked')
     expect(result.terminal.output).toContain('Turn cancelled')
     expect(result.terminal.progress).toContain(true)