# Verification Report

**Change**: 2026-03-17-cerebro-tui-phase2-optional-surface
**Version**: N/A

---

### Completeness

| Metric           | Value |
|------------------|-------|
| Tasks total      | 29    |
| Tasks complete   | 29    |
| Tasks incomplete | 0     |

---

### Build & Tests Execution

**Build**: ✅ Passed (`make build`)

**Tests**: ✅ `make test` succeeded; ✅ TUI test suites passed (toggle, non-blocking, event bus,
emission, redaction, shutdown, view missing render)

**Coverage**: ✅ Passed (`make test-coverage`, threshold: 60%)

---

### Spec Compliance Matrix

| Requirement              | Scenario                                             | Test                                                                                                  | Result      |
|--------------------------|------------------------------------------------------|-------------------------------------------------------------------------------------------------------|-------------|
| In-Process TUI Toggle    | TUI enabled by flag (happy path)                     | `clients/cerebro/tests/tui_toggle_tests.rs > tui_toggle_enabled_starts_headless`                      | ✅ COMPLIANT |
| In-Process TUI Toggle    | TUI disabled by configuration (edge case)            | `clients/cerebro/tests/tui_toggle_tests.rs > tui_toggle_disabled_skips_start`                         | ✅ COMPLIANT |
| MCP Remains Non-Blocking | MCP remains responsive with TUI running (happy path) | `clients/cerebro/tests/tui_non_blocking_tests.rs > mcp_path_remains_responsive_with_tui_running`      | ✅ COMPLIANT |
| MCP Remains Non-Blocking | TUI stalls (edge case)                               | `clients/cerebro/tests/tui_non_blocking_tests.rs > mcp_path_does_not_block_on_event_bus_backpressure` | ✅ COMPLIANT |
| TUI View Availability    | Views available (happy path)                         | `clients/cerebro/tests/tui_event_bus_tests.rs`                                                        | ✅ COMPLIANT |
| TUI View Availability    | View missing (edge case)                             | `clients/cerebro/tests/tui_view_missing_render_tests.rs`                                              | ✅ COMPLIANT |
| TUI Data Redaction       | Sensitive fields are redacted (happy path)           | `clients/cerebro/tests/tui_redaction_tests.rs`                                                        | ✅ COMPLIANT |
| TUI Data Redaction       | Unknown data classification (edge case)              | `clients/cerebro/tests/tui_redaction_tests.rs`                                                        | ✅ COMPLIANT |
| Graceful TUI Shutdown    | Operator exits TUI (happy path)                      | `clients/cerebro/tests/tui_shutdown_tests.rs`                                                         | ✅ COMPLIANT |
| Graceful TUI Shutdown    | TUI crashes (edge case)                              | `clients/cerebro/tests/tui_shutdown_tests.rs`                                                         | ✅ COMPLIANT |
| No New Network Endpoints | TUI enabled without new listeners (happy path)       | `clients/cerebro/tests/tui_toggle_tests.rs > tui_validation_allows_no_listener_env`                   | ✅ COMPLIANT |
| No New Network Endpoints | Unexpected listener detected (edge case)             | `clients/cerebro/tests/tui_toggle_tests.rs > tui_validation_rejects_unexpected_listener_env`          | ✅ COMPLIANT |
| Optional TUI Surface     | TUI enabled (happy path)                             | `clients/cerebro/tests/tui_toggle_tests.rs > tui_toggle_enabled_starts_headless`                      | ✅ COMPLIANT |
| Optional TUI Surface     | TUI disabled (edge case)                             | `clients/cerebro/tests/tui_toggle_tests.rs > tui_toggle_disabled_skips_start`                         | ✅ COMPLIANT |

**Compliance summary**: 14/14 scenarios compliant

---

### Correctness (Static — Structural Evidence)

| Requirement              | Status        | Notes                                                                                                                                    |
|--------------------------|---------------|------------------------------------------------------------------------------------------------------------------------------------------|
| In-Process TUI Toggle    | ✅ Implemented | `clients/cerebro/src/config.rs` defines `TuiConfig`; `clients/cerebro/src/main.rs` gates `start_tui_task` and honors env flag.           |
| MCP Remains Non-Blocking | ✅ Implemented | `clients/cerebro/src/server.rs` publishes to `EventBus` without awaiting; `clients/cerebro/src/tui/event_bus.rs` uses bounded broadcast. |
| TUI View Availability    | ✅ Implemented | View routing + `render_missing_view` guard in `clients/cerebro/src/tui/mod.rs`.                                                          |
| TUI Data Redaction       | ✅ Implemented | `clients/cerebro/src/tui/redaction.rs` plus redaction at emission boundary in `clients/cerebro/src/server.rs`.                           |
| Graceful TUI Shutdown    | ✅ Implemented | `clients/cerebro/src/tui/mod.rs` uses `TerminalGuard` and shutdown watcher.                                                              |
| No New Network Endpoints | ✅ Implemented | `clients/cerebro/src/main.rs` fails startup on `validate_no_network_listeners` error.                                                    |
| Optional TUI Surface     | ✅ Implemented | TUI is gated by config/feature; views wired in `clients/cerebro/src/tui/mod.rs`.                                                         |

---

### Coherence (Design)

| Decision                                             | Followed? | Notes                                                                 |
|------------------------------------------------------|-----------|-----------------------------------------------------------------------|
| In-process TUI with a feature flag                   | ✅ Yes     | `start_tui_task` gated by `config.tui.enabled` and feature flag.      |
| Broadcast event bus for tool-call lifecycle          | ✅ Yes     | `clients/cerebro/src/tui/event_bus.rs`.                               |
| Redaction at emission boundary                       | ✅ Yes     | Redaction applied before publish in `clients/cerebro/src/server.rs`.  |
| View data sourced via storage queries + event stream | ✅ Yes     | `refresh_storage` + event stream in `clients/cerebro/src/tui/mod.rs`. |
| Startup validation for unexpected listeners          | ✅ Yes     | Startup fails on validation error in `clients/cerebro/src/main.rs`.   |

---

### Issues Found

None.

---

### Verdict

PASS

All required spec scenarios are covered by tests or verified by build/coverage evidence.
