refactor: migrate maintained runtime support to TypeScript

[tomdps]

Summary

• migrate CLI export/watch formatting, routing helpers, execution boundaries, state snapshots, and nested-cluster support from maintained JavaScript to strict TypeScript
• preserve every existing CommonJS runtime path, export order, function/class arity, and packed-package output
• add unknown-first runtime guards at untyped process, JSON, worker, message-bus, and validator boundaries without any or TypeScript suppressions
• split state snapshot normalization into a shared internal module to satisfy file-size and clone policy

Validation

• npm run typecheck
• npm run lint -- --quiet
• npx mocha tests/package-smoke.test.js
• focused CLI/routing/execution/snapshot/nested-cluster suites
• differential execution against the committed JavaScript for snapshot reducers, snapshotter class surface, sub-cluster validation/defaults, and bridge forwarding
• real worker-thread copy behavior probe
• npm run opcore:check
• opcore-zero check --repo . --staged --json
• opcore-zero sense --repo . --staged --json

[greptile-apps]

Greptile Summary

This PR migrates maintained CLI, orchestration, snapshot, nested-cluster, and execution-boundary runtime modules to strict TypeScript while retaining generated CommonJS entrypoints.

• Adds runtime guards at untyped module, worker, message, JSON, and process boundaries.
• Splits snapshot normalization into a shared internal module.
• Extends package smoke coverage to verify generated runtime files are included in packed artifacts.
• Updates build-output ignore and lint configuration for generated CommonJS files.

Confidence Score: 5/5

The PR appears safe to merge.

No blocking failure remains.

Important Files Changed

Filename	Overview
cli/json-export.ts	Migrates streaming ledger export to strict TypeScript while preserving incremental file-descriptor and stream output.
src/state-snapshot.ts	Migrates snapshot reducers to TypeScript and delegates unknown-value normalization to the new shared module.
src/state-snapshotter.ts	Migrates snapshot bootstrap, topic folding, hashing, and publication while adding guards around ledger messages.
src/message-bus-bridge.ts	Migrates parent/child cluster forwarding and loop prevention with typed bus and message contracts.
src/schemas/sub-cluster.ts	Migrates nested-cluster validation and defaults while validating the lazily loaded config-validator boundary.
src/copy-worker.ts	Migrates the worker-thread copy boundary and validates worker data before copying files.
tests/package-smoke.test.js	Expands packed-package verification for generated CommonJS runtime outputs.

Flowchart

%%{init: {'theme': 'neutral'}}%%
flowchart LR
  TS[Maintained TypeScript sources] --> Build[Legacy runtime TypeScript build]
  Build --> CJS[Generated CommonJS runtime paths]
  CJS --> CLI[CLI and export/watch formatting]
  CJS --> Orchestrator[Orchestrator and trigger evaluation]
  CJS --> Snapshot[State snapshot reducers and snapshotter]
  CJS --> Nested[Nested-cluster schema and message bridge]
  CJS --> Boundaries[Worker, credential, and environment boundaries]
  CJS --> Pack[npm packed package]

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_{Reviews (2): Last reviewed commit: "test: allow package smoke build headroom" | Re-trigger Greptile}

[github-actions]

🎉 This PR is included in version 6.39.0 🎉

The release is available on:

• npm package (@latest dist-tag)
• GitHub release

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