v1.8.0 — add plan2code-metrics recursive self-improvement toolchain

New package for contributors to collect, aggregate, analyze, and improve
workflow prompts based on real project data. Includes unit tests (vitest),
installer integration, and loop/finalize hints.

plan2code-metrics/src/index.ts

@@ -0,0 +1,18 @@
+// Public API for plan2code-metrics
+export { collectRun, collectPromptVersions } from './collector.js';
+export { aggregate, loadAggregated, loadRunFiles, importRun } from './aggregator.js';
+export { runAnalysis } from './analyzer.js';
+export { generateImprovement, validateEdit, parseProposalFromResponse } from './improver.js';
+export { reviewAndApply } from './applier.js';
+export { invokeLLM, AGENTS } from './invoke-llm.js';
+export type { AgentType, InvokeLLMOptions } from './invoke-llm.js';
+export { runCLI } from './cli.js';
+export { METRIC_TARGETS } from './types.js';
+export type {
+  RunMetrics,
+  PromptVersions,
+  PromptEdit,
+  PromptProposal,
+  AggregatedMetrics,
+  CohortMetrics,
+} from './types.js';