# Whetstone DSL — Session Handoff
**Date:** 2026-03-01
**Session:** H+1 (Polyglot Phase 5 completion)
**Steps completed:** 1948–1957 (Sprints 284–285)

---

## What Was Done

### Sprint 284 — poly-compiler (steps 1948–1952) ✓

5-phase compiler pipeline: C++(lex) → Haskell(parse) → Rust(typecheck) → Lisp(optimize) → Go(emit)

| Header | Description |
|--------|-------------|
| `CompilerPhaseSpec.h` | `CompilerPhaseSpec` struct + `CompilerPhaseRegistry` (sorted by `order` field) |
| `CompilerIRNode.h` | `IRNodeKind` enum {Source,Token,AST,TypedAST,OptimizedAST,Bytecode} + `IRNodePipeline` queue |
| `CompilerPhaseRouter.h` | `IRNodeKind → phaseId` routing with optional fallback |
| `CompilerPipelineRunner.h` | Chains `PhaseTransform` functions in `spec.order` order; `runAll` / `runUpTo` |
| `Sprint284IntegrationSummary.h` | stepsCompleted=5, sprintName="Sprint 284: poly-compiler" |

Tests: `step1948_test.cpp` – `step1952_test.cpp` — 26/26 pass
Metrics: 1 call captured (4810 tokens — pipeline calls from prior session missed due to context compaction)

---

### Sprint 285 — poly-everything (steps 1953–1957) ✓

Unified polyglot orchestration over 8 languages (C++, Python, Rust, Go, Haskell, TypeScript, Java, Lisp)

| Header | Description |
|--------|-------------|
| `PolyglotFunctionMap.h` | `(language, functionName) → tag` registry; lookup/hasFunction/languagesForFunction |
| `PolyglotExecutionContext.h` | `LanguageConfig{timeout_ms, env, working_dir}` per language; get/set/has |
| `PolyglotResultAggregator.h` | `FunctionResult` collection; `AggregateReport{passCount,failCount,totalDurationMs,failedLanguages}` |
| `PolyglotOrchestrator.h` | Ties map + context + aggregator; `addFunction`/`setContext`/`recordResult`/`runSummary` |
| `Sprint285IntegrationSummary.h` | stepsCompleted=5, sprintName="Sprint 285: poly-everything" |

Tests: `step1953_test.cpp` – `step1957_test.cpp` — 26/26 pass
Metrics: 8 calls, 6469 tokens

---

## Phase 5 Complete

The full Polyglot Orchestrator Phase 5 plan (`docs/polyglot_orchestrator_sprint_plan.md`) is done:

| Sprint | Steps | Theme | Status |
|--------|-------|-------|--------|
| 282 | 1938–1942 | Polyglot Test Harness | COMPLETE |
| 283 | 1943–1947 | poly-pipeline | COMPLETE |
| 284 | 1948–1952 | poly-compiler | COMPLETE |
| 285 | 1953–1957 | poly-everything | COMPLETE |

---

## Current State

- **Last step:** 1957
- **Last sprint:** Sprint 285
- **Next step:** 1958 (Phase 6 — consult `docs/polyglot_orchestrator_sprint_plan.md`)
- **Branch:** `001-core-ast-structure`
- **Build:** `cmake --build editor/build-native --parallel` (all targets pass)

## Key Files Written This Session

```
editor/src/CompilerPhaseSpec.h
editor/src/CompilerIRNode.h
editor/src/CompilerPhaseRouter.h
editor/src/CompilerPipelineRunner.h
editor/src/Sprint284IntegrationSummary.h
editor/src/PolyglotFunctionMap.h
editor/src/PolyglotExecutionContext.h
editor/src/PolyglotResultAggregator.h
editor/src/PolyglotOrchestrator.h
editor/src/Sprint285IntegrationSummary.h
editor/tests/step1948_test.cpp – step1957_test.cpp
editor/CMakeLists.txt (entries through step1957)
CLAUDE.md (updated to Sprint 285)
```

## To Continue

1. Read `docs/polyglot_orchestrator_sprint_plan.md` for Phase 6 direction
2. Start at step 1958 with the standard workflow:
   `start_recording → architect_intake → generate_taskitems → queue_ready → run_pipeline ×4 → implement → test → get_metrics → commit`