# Verification Report

**Change**: slash-command-registry-core
**Version**: N/A

---

### Completeness

| Metric | Value |
|--------|-------|
| Tasks total | 12 |
| Tasks complete | 12 |
| Tasks incomplete | 0 |

All tasks in `openspec/changes/slash-command-registry-core/tasks.md` remain marked complete.

---

### Build & Tests Execution

**Formatting**: ✅ Passed  
Command: `cargo fmt --manifest-path clients/agent-runtime/Cargo.toml --all -- --check`

Evidence:
- Command completed successfully with no diff output.

**Clippy**: ✅ Passed  
Command: `cargo clippy --manifest-path clients/agent-runtime/Cargo.toml --all-targets -- -D warnings`

Evidence:
- Command completed successfully with no diagnostics.

**Full agent-runtime test suite**: ✅ Passed  
Command: `cargo test --manifest-path clients/agent-runtime/Cargo.toml`

Evidence:
- All test binaries reported `test result: ok`.
- Aggregate observed results from the full captured run: **7282 passed, 0 failed, 0 ignored** across unit and integration test binaries.
- Previously failing gateway tests now pass in the full suite:
  - `gateway::tests::legacy_webhook_preview_does_not_emit_synthetic_events_sse`
  - `gateway::tests::webhook_non_preview_blocks_approval_and_keeps_session_id`
  - `gateway::tests::webhook_non_preview_timeout_aborts_with_session_scope`
  - `gateway::tests::webhook_timeout_does_not_consume_idempotency_key`
- Previously tracked slash-command blockers also pass in the full suite:
  - `gateway::tests::legacy_webhook_preview_intercepts_slash_session_commands`
  - `session_commands::registry::tests::dispatch_preserves_resume_authorization_after_registry_lookup`
  - `gateway::tests::legacy_webhook_resume_preserves_transport_identity_through_registry`

**Coverage**: ➖ Not configured

**Unrun config-listed commands**:
- `make web-test-all`
- `pnpm check`

These were not run because the implementation remains confined to Rust runtime code and the Rust validation completed successfully.

---

### Spec Compliance Matrix

| Requirement | Scenario | Test | Result |
|-------------|----------|------|--------|
| Command Descriptor Metadata Contract | Registered command exposes complete descriptor metadata | `session_commands/registry.rs > default_registry_exposes_built_in_descriptors` | ✅ COMPLIANT |
| Command Descriptor Metadata Contract | Registry metadata remains transport- and backend-neutral | `session_commands/registry.rs > default_registry_exposes_built_in_descriptors`; `dispatch_routes_built_ins_to_existing_service_behavior`; `dispatch_preserves_resume_authorization_after_registry_lookup`; `gateway/mod.rs > legacy_webhook_resume_preserves_transport_identity_through_registry` | ✅ COMPLIANT |
| Deterministic Canonical Name and Alias Resolution | Alias resolves to canonical command deterministically | `session_commands/registry.rs > registry_supports_canonical_and_alias_lookup` | ⚠️ PARTIAL |
| Deterministic Canonical Name and Alias Resolution | Duplicate registration is rejected before runtime dispatch | `session_commands/registry.rs > registry_rejects_duplicate_canonical_names`; `registry_rejects_duplicate_aliases`; `registry_rejects_alias_collisions_with_canonical_names` | ✅ COMPLIANT |
| Centralized Dispatch Through the Pre-Execution Seam | Recognized slash command dispatches through the shared seam | `pre_execution/mod.rs > ingress_classifies_supported_slash_commands_before_pre_execution` | ✅ COMPLIANT |
| Centralized Dispatch Through the Pre-Execution Seam | Unknown slash-like input preserves normal handling | `pre_execution/mod.rs > ingress_preserves_unknown_slash_like_input` | ✅ COMPLIANT |
| Existing Slash Session Behavior Preservation | Existing slash session commands remain available after registry adoption | `session_commands/registry.rs > default_registry_exposes_built_in_descriptors`; `dispatch_routes_built_ins_to_existing_service_behavior`; `dispatch_preserves_resume_authorization_after_registry_lookup`; `gateway/mod.rs > legacy_webhook_preview_intercepts_slash_session_commands` | ⚠️ PARTIAL |
| Existing Slash Session Behavior Preservation | Registry migration does not change unsupported-backend behavior | `session_commands/service.rs > rejects_non_sqlite_backends`; `pre_execution/mod.rs > ingress_classifies_supported_slash_commands_before_pre_execution`; `session_commands/registry.rs > dispatch_routes_built_ins_to_existing_service_behavior` | ⚠️ PARTIAL |
| Transport Parity for Recognized Slash Commands | Multiple transports reach the same registry dispatch contract | `main.rs > cli_session_commands_are_handled_before_agent_execution`; `gateway/mod.rs > canonical_outcome_early_response_intercepts_slash_session_commands`; `gateway/mod.rs > web_chat_stream_returns_deterministic_slash_session_sse_without_provider_execution`; `gateway/webhook_dispatch.rs > execute_intercepts_slash_session_commands_before_provider_execution`; `channels/mod.rs > ingress_outcome_handles_slash_session_commands_before_memory_enrichment` | ✅ COMPLIANT |
| Transport Parity for Recognized Slash Commands | Surface-specific identity rules remain outside parity contract | `gateway/mod.rs > legacy_webhook_resume_preserves_transport_identity_through_registry` | ⚠️ PARTIAL |
| Registry-Core Separation from Backend and Authorization Policy | Handler enforces backend-specific requirements after registry dispatch | `session_commands/registry.rs > dispatch_routes_built_ins_to_existing_service_behavior`; `session_commands/service.rs > rejects_non_sqlite_backends` | ✅ COMPLIANT |
| Registry-Core Separation from Backend and Authorization Policy | Handler enforces authorization after registry dispatch | `session_commands/registry.rs > dispatch_preserves_resume_authorization_after_registry_lookup` | ✅ COMPLIANT |

**Compliance summary**: 8/12 scenarios compliant, 4 partial, 0 untested.

---

### Correctness (Static — Structural Evidence)

| Requirement | Status | Notes |
|------------|--------|-------|
| Descriptor metadata contract | ✅ Implemented | `session_commands/types.rs` defines descriptor, requirements, invocation, handler, and registration core types; `registry.rs` built-ins populate description and requirement tags. |
| Deterministic lookup and alias rejection | ✅ Implemented | `session_commands/registry.rs` validates names, duplicate canonicals, duplicate aliases, canonical/alias collisions, and exact lookup only. |
| Centralized dispatch via pre-execution seam | ✅ Implemented | `pre_execution/mod.rs` routes recognized slash commands through `default_registry().dispatch(...)`. |
| Existing session commands preserved through registry core | ✅ Implemented | `session_commands/registry.rs` still registers `/resume`, `/suspend`, `/tldr`, `/compact` and forwards to `SessionCommandService::handle_*` methods. |
| Transport parity wiring | ✅ Implemented | CLI, gateway early response, gateway stream, webhook dispatcher, and channels still call `pre_execution::evaluate_ingress(...)`. |
| Backend/authz separation from registry core | ✅ Implemented | `SessionCommandService` still owns SQLite checks, resume authorization preconditions, and state mutation; registry only stores metadata and dispatches. |

---

### Coherence (Design)

| Decision | Followed? | Notes |
|----------|-----------|-------|
| Keep first registry core inside `session_commands` | ✅ Yes | Implementation remains local to `clients/agent-runtime/src/session_commands/`. |
| Use immutable descriptors plus handler adapters | ✅ Yes | Built-ins remain descriptor + handler registrations in `registry.rs`. |
| Split lexical parsing from descriptor-aware validation | ✅ Yes | `parser.rs` performs lexical parse; `registry.rs` performs argument-shape validation. |
| Keep `pre_execution::evaluate_ingress(...)` as the only short-circuit seam | ✅ Yes | All touched transports still route through `evaluate_ingress(...)`. |
| Keep backend/auth enforcement in `SessionCommandService` | ✅ Yes | `service.rs` remains the backend/auth enforcement layer. |
| Keep issue #539 scope tight / avoid help-introspection surface | ⚠️ Deviated | `SlashCommandRegistry::iter()` is still public, which remains broader than the minimum routing surface. |
| Preserve existing transport behavior | ✅ Yes | Fresh full-suite evidence shows the previously failing gateway behaviors are now restored. |

---

### Issues Found

**CRITICAL**
- None.

**WARNING**
- Alias coverage is still incomplete: alias lookup is tested, but alias-driven dispatch is not.
- Current-session-command preservation is still only partially proven through the registry path; `/suspend` still lacks a direct registry-dispatch regression test.
- Surface-specific identity preservation proof improved, but it is still gateway-only rather than demonstrating two different supported transports with different identity inputs.
- `SlashCommandRegistry::iter()` remains a public introspection-style API that looks broader than task 2.4’s tight-scope boundary.

**SUGGESTION**
- Add an alias-dispatch test (not just alias lookup) for a synthetic registration.
- Add a direct registry-dispatch regression test for `/suspend`.
- Add a second transport-level `/resume` identity test (for example channel-backed ingress) to fully prove identity preservation outside the registry.

---

### Verdict

**PASS WITH WARNINGS**

The change now clears the verification gate for #539: formatting, clippy, and the full Rust test suite all pass; the previously failing gateway regressions are fixed; descriptor metadata and handler-boundary requirements are structurally and behaviorally aligned with the proposal/spec/design/tasks. Archive is allowed, with the remaining items tracked as non-blocking warnings.
