feat: monorepo consolidation — forge pipeline, MACP protocol, framework plugin, profiles/guides/skills

Work packages completed:
- WP1: packages/forge — pipeline runner, stage adapter, board tasks, brief classifier,
  persona loader with project-level overrides. 89 tests, 95.62% coverage.
- WP2: packages/macp — credential resolver, gate runner, event emitter, protocol types.
  65 tests, 96.24% coverage. Full Python-to-TS port preserving all behavior.
- WP3: plugins/mosaic-framework — OC rails injection plugin (before_agent_start +
  subagent_spawning hooks for Mosaic contract enforcement).
- WP4: profiles/ (domains, tech-stacks, workflows), guides/ (17 docs),
  skills/ (5 universal skills), forge pipeline assets (48 markdown files).

Board deliberation: docs/reviews/consolidation-board-memo.md
Brief: briefs/monorepo-consolidation.md

Consolidates mosaic/stack (forge, MACP, bootstrap framework) into mosaic/mosaic-stack.
154 new tests total. Zero Python — all TypeScript/ESM.

packages/forge/src/index.ts

@@ -0,0 +1,82 @@
+// Types
+export type {
+  StageDispatch,
+  StageType,
+  StageSpec,
+  BriefClass,
+  ClassSource,
+  StageStatus,
+  RunManifest,
+  ForgeTaskStatus,
+  ForgeTask,
+  TaskExecutor,
+  BoardPersona,
+  PersonaReview,
+  BoardSynthesis,
+  ForgeConfig,
+  PipelineOptions,
+  PipelineResult,
+} from './types.js';
+
+// Constants
+export {
+  PACKAGE_ROOT,
+  PIPELINE_DIR,
+  STAGE_SPECS,
+  STAGE_SEQUENCE,
+  STAGE_TIMEOUTS,
+  STAGE_LABELS,
+  STRATEGIC_KEYWORDS,
+  TECHNICAL_KEYWORDS,
+} from './constants.js';
+
+// Brief classifier
+export {
+  classifyBrief,
+  parseBriefFrontmatter,
+  determineBriefClass,
+  stagesForClass,
+} from './brief-classifier.js';
+
+// Persona loader
+export {
+  slugify,
+  personaNameFromMarkdown,
+  loadBoardPersonas,
+  loadPersonaOverrides,
+  loadForgeConfig,
+  getEffectivePersonas,
+} from './persona-loader.js';
+
+// Stage adapter
+export {
+  stageTaskId,
+  stageDir,
+  stageBriefPath,
+  stageResultPath,
+  loadStagePrompt,
+  buildStageBrief,
+  writeStageBrief,
+  mapStageToTask,
+} from './stage-adapter.js';
+
+// Board tasks
+export {
+  buildPersonaBrief,
+  writePersonaBrief,
+  personaResultPath,
+  synthesisResultPath,
+  generateBoardTasks,
+  synthesizeReviews,
+} from './board-tasks.js';
+
+// Pipeline runner
+export {
+  generateRunId,
+  saveManifest,
+  loadManifest,
+  selectStages,
+  runPipeline,
+  resumePipeline,
+  getPipelineStatus,
+} from './pipeline-runner.js';