# 149 - 2026-03-24: Hidden atomic layer and goal-first docs

**Status**: ✅ Completed  
**Type**: Docs / Policy Rollout  
**Task**: TASK-113-02, TASK-113-03

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## Summary

Completed the second documentation wave for `TASK-113`.

The docs now explicitly define:

- hidden atomic tools as part of the platform model
- public escape-hatch rules
- `router_set_goal(...)` as the default production entrypoint
- the minimal session-context contract that later vision/verification work should use

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## Files Modified (high level)

- `_docs/_MCP_SERVER/TOOL_LAYERING_POLICY.md`
- `_docs/_MCP_SERVER/README.md`
- `README.md`
- `_docs/AVAILABLE_TOOLS_SUMMARY.md`
- `_docs/_PROMPTS/README.md`
- `_docs/_PROMPTS/WORKFLOW_ROUTER_FIRST.md`
- `_docs/_PROMPTS/MANUAL_TOOLS_NO_ROUTER.md`
- `_docs/_TASKS/TASK-113-02*`
- `_docs/_TASKS/TASK-113-03*`
- `_docs/_CHANGELOG/README.md`
