refactor: migrate runtime configuration to TypeScript

[tomdps]

Summary

• migrate normal CLI message formatting to strict TypeScript and share lifecycle/criteria helpers with the CLI entrypoint
• migrate nested model argument resolution to strict TypeScript with unknown-first provider boundaries
• migrate the Claude worktree configuration overlay to strict TypeScript
• migrate runtime name generation to strict TypeScript and deduplicate the task-library word lists behind a shared implementation

Each migration is a separate commit. Emitted CommonJS paths remain unchanged for runtime and package consumers.

Validation

• npm run opcore:check
• npm run typecheck
• npm test — 2,897 passing, 18 pending
• npm run prepack
• npx mocha tests/package-smoke.test.js --timeout 120000
• focused differential parity checks for formatter exports, model arguments, Claude overlay filesystem behavior, and both name-generator surfaces
• native Opcore clone analysis on the shared name-generator implementation

[greptile-apps]

Greptile Summary

The PR migrates several runtime configuration and formatting modules to strict TypeScript while preserving their emitted CommonJS paths.

• Shares lifecycle and validation-criteria formatting helpers across CLI rendering paths.
• Migrates nested model-argument resolution and isolated provider-settings snapshots.
• Migrates Claude worktree overlay creation, validation, and cleanup.
• Deduplicates cluster and task name generation behind a shared implementation.

Confidence Score: 5/5

The PR appears safe to merge.

No blocking failure remains.

Important Files Changed

Filename	Overview
cli/message-formatter-utils.ts	Adds shared lifecycle-event formatting and validation-criteria partitioning helpers without changing established output behavior.
cli/message-formatters-normal.ts	Replaces the normal-mode CommonJS source with strict TypeScript while retaining its formatter exports and rendering behavior.
src/task-run-model-args.ts	Migrates nested model argument and isolated-settings resolution to unknown-first TypeScript validation while preserving emitted runtime behavior.
src/worktree-claude-config.ts	Migrates Claude settings-overlay handling to TypeScript while retaining canonical-path, ownership, mode, and symlink guards.
src/name-generator-shared.ts	Centralizes word lists and random-name primitives for runtime and task-lib consumers.
task-lib/name-generator.ts	Delegates task and schedule name generation to the shared implementation while preserving task-lib fallbacks and ESM exports.
src/name-generator.ts	Preserves the existing runtime name-generator CommonJS interface through a TypeScript wrapper.

Flowchart

%%{init: {'theme': 'neutral'}}%%
flowchart LR
  TS[Strict TypeScript sources] --> LR[build:legacy-runtime]
  TS --> TL[build:task-lib]
  LR --> CJS[Runtime CommonJS files]
  TL --> ESM[Task-lib ESM files]
  CJS --> CLI[CLI and orchestration consumers]
  CJS --> Claude[Claude overlay and nested-task consumers]
  ESM --> Tasks[Task store and scheduler consumers]
  TS --> Shared[Shared formatter and name-generator helpers]
  Shared --> CJS
  Shared --> ESM

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[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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