fix(tui): handle EventInputRequired via session.Respond in monitoring tab

[pocky]

Summary

• Fix the TUI monitoring tab to handle EventInputRequired fired directly from the facade event stream, without relying on the legacy InputRequestedMsg path which required a TUIInputReader
• Route user responses via session.Respond() when an active session is present, falling back to inputReader.Respond() for the older code path
• Expose the prompt from EventInputRequired in the SSE API so clients receive it as part of the event payload
• Switch conversation wiring tests from sonnet to haiku to reduce test cost

Changes

TUI

• internal/interfaces/tui/tab_monitoring.go: Store the RunSession on ExecutionStartedMsg, extract beginInputRequest() helper shared by both InputRequestedMsg and facadeEventMsg/EventInputRequired paths; clear activeSession on run end; dispatch user responses via session.Respond() when available; guard empty-state view from hiding the input box mid-conversation
• internal/interfaces/tui/tab_monitoring_test.go: Add test covering EventInputRequired received via facadeEventMsg — verifies input box appears and response is routed to the session; capture responses in mockRunSession

API

• internal/interfaces/api/sse.go: Add Prompt field to sseEventData and populate it from EnrichedInputRequest payload when EventInputRequired is received
• internal/interfaces/api/sse_test.go: Add test asserting eventDataFromEvent maps prompt correctly for EventInputRequired

Tests

• internal/interfaces/cli/run_wiring_conversation_test.go: Replace sonnet with haiku in all inline workflow fixtures to reduce test execution cost

Test plan

• Run unit tests: go test ./internal/interfaces/tui/... ./internal/interfaces/api/... ./internal/interfaces/cli/...
• Launch a workflow that requires user input and verify the conversation input box appears and accepts a response via the TUI monitoring tab
• Verify the SSE stream emits "prompt" in the input.required event payload for API consumers
• Confirm no regression in the empty-state view when no execution is active

---

Generated with awf commit workflow