Ralph Iteration Summary - claw-code Roadmap Implementation
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Iteration 1: 2026-04-16
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US-001 COMPLETED (Phase 1.6 - startup-no-evidence evidence bundle + classifier)
- Files: rust/crates/runtime/src/worker_boot.rs
- Added StartupFailureClassification enum with 6 variants
- Added StartupEvidenceBundle with 8 fields
- Implemented classify_startup_failure() logic
- Added observe_startup_timeout() method to Worker
- Tests: 6 new tests verifying classification logic

US-002 COMPLETED (Phase 2 - Canonical lane event schema)
- Files: rust/crates/runtime/src/lane_events.rs
- Added EventProvenance enum with 5 labels
- Added SessionIdentity, LaneOwnership structs
- Added LaneEventMetadata with sequence/ordering
- Added LaneEventBuilder for construction
- Implemented is_terminal_event(), dedupe_terminal_events()
- Tests: 10 new tests for events and deduplication

US-005 COMPLETED (Phase 4 - Typed task packet format)
- Files:
  - rust/crates/runtime/src/task_packet.rs
  - rust/crates/runtime/src/task_registry.rs
  - rust/crates/tools/src/lib.rs
- Added TaskScope enum (Workspace, Module, SingleFile, Custom)
- Updated TaskPacket with scope_path and worktree fields
- Added validate_scope_requirements() validation logic
- Fixed all test compilation errors in dependent modules
- Tests: Updated existing tests to use new types

PRE-EXISTING IMPLEMENTATIONS (verified working):
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US-003 COMPLETE (Phase 3 - Stale-branch detection)
- Files: rust/crates/runtime/src/stale_branch.rs
- BranchFreshness enum (Fresh, Stale, Diverged)
- StaleBranchPolicy (AutoRebase, AutoMergeForward, WarnOnly, Block)
- StaleBranchEvent with structured events
- check_freshness() with git integration
- apply_policy() with policy resolution
- Tests: 12 unit tests + 5 integration tests passing

US-004 COMPLETE (Phase 3 - Recovery recipes with ledger)
- Files: rust/crates/runtime/src/recovery_recipes.rs
- FailureScenario enum with 7 scenarios
- RecoveryStep enum with actionable steps
- RecoveryRecipe with step sequences
- RecoveryLedger for attempt tracking
- RecoveryEvent for structured emission
- attempt_recovery() with escalation logic
- Tests: 15 unit tests + 1 integration test passing

US-006 COMPLETE (Phase 4 - Policy engine for autonomous coding)
- Files: rust/crates/runtime/src/policy_engine.rs
- PolicyRule with condition/action/priority
- PolicyCondition (And, Or, GreenAt, StaleBranch, etc.)
- PolicyAction (MergeToDev, RecoverOnce, Escalate, etc.)
- LaneContext for evaluation context
- evaluate() for rule matching
- Tests: 18 unit tests + 6 integration tests passing

US-007 COMPLETE (Phase 5 - Plugin/MCP lifecycle maturity)
- Files: rust/crates/runtime/src/plugin_lifecycle.rs
- ServerStatus enum (Healthy, Degraded, Failed)
- ServerHealth with capabilities tracking
- PluginState with full lifecycle states
- PluginLifecycle event tracking
- PluginHealthcheck structured results
- DiscoveryResult for capability discovery
- DegradedMode behavior
- Tests: 11 unit tests passing

VERIFICATION STATUS:
------------------
- cargo build --workspace: PASSED
- cargo test --workspace: PASSED (476+ unit tests, 12 integration tests)
- cargo clippy --workspace: PASSED

All 7 stories from prd.json now have passes: true

Iteration 2: 2026-04-16
------------------------

US-009 COMPLETED (Add unit tests for kimi model compatibility fix)
- Files: rust/crates/api/src/providers/openai_compat.rs
- Added 4 comprehensive unit tests:
  1. model_rejects_is_error_field_detects_kimi_models - verifies detection of kimi-k2.5, kimi-k1.5, dashscope/kimi-k2.5, case insensitivity
  2. translate_message_includes_is_error_for_non_kimi_models - verifies gpt-4o, grok-3, claude include is_error
  3. translate_message_excludes_is_error_for_kimi_models - verifies kimi models exclude is_error (prevents 400 Bad Request)
  4. build_chat_completion_request_kimi_vs_non_kimi_tool_results - full integration test for request building
- Tests: 4 new tests, 119 unit tests total in api crate (+4), all passing
- Integration tests: 29 passing (no regressions)

US-010 COMPLETED (Add model compatibility documentation)
- Files: docs/MODEL_COMPATIBILITY.md
- Created comprehensive documentation covering:
  1. Kimi Models (is_error Exclusion) - documents the 400 Bad Request issue and solution
  2. Reasoning Models (Tuning Parameter Stripping) - covers o1, o3, o4, grok-3-mini, qwen-qwq, qwen3-thinking
  3. GPT-5 (max_completion_tokens) - documents max_tokens vs max_completion_tokens requirement
  4. Qwen Models (DashScope Routing) - explains routing and authentication
- Added implementation details section with key functions
- Added "Adding New Models" guide for future contributors
- Added testing section with example commands
- Cross-referenced with existing code comments in openai_compat.rs
- cargo clippy passes

US-011 COMPLETED (Performance optimization: reduce API request serialization overhead)
- Files:
  - rust/crates/api/Cargo.toml (added criterion dev-dependency and bench config)
  - rust/crates/api/benches/request_building.rs (new benchmark suite)
  - rust/crates/api/src/providers/openai_compat.rs (optimizations)
  - rust/crates/api/src/lib.rs (public exports for benchmarks)
- Optimizations implemented:
  1. flatten_tool_result_content: Pre-allocate String capacity and avoid intermediate Vec
     - Before: collected to Vec<String> then joined
     - After: single String with pre-calculated capacity, push directly
  2. Made key functions public for benchmarking: translate_message, build_chat_completion_request,
     flatten_tool_result_content, is_reasoning_model, model_rejects_is_error_field
- Benchmark results:
  - flatten_tool_result_content/single_text: ~17ns
  - flatten_tool_result_content/multi_text (10 blocks): ~46ns
  - flatten_tool_result_content/large_content (50 blocks): ~11.7µs
  - translate_message/text_only: ~200ns
  - translate_message/tool_result: ~348ns
  - build_chat_completion_request/10 messages: ~16.4µs
  - build_chat_completion_request/100 messages: ~209µs
  - is_reasoning_model detection: ~26-42ns depending on model
- All tests pass (119 unit tests + 29 integration tests)
- cargo clippy passes
