governance: adopt TDD with full unit/integration tests; update system prompt and AGENTS templates\n\nplan: add TDD milestones and test coverage criteria; update proposal accordingly

collab/proposals/01-codexhelper.llm.md

@@ -13,7 +13,8 @@
 - Outputs: `<project>/runs/<ts>/...`.
 - Layout (repo): `CodexHelper`, `bin/install.sh`, `prompts/global/{system.md,system.llm.md}`, `modes/<Name>/{mode.md,system.md?,defaults.yaml}`, `templates/project/<Name>/...`, `templates/project/_shared/AGENTS.md`, `meta/{AGENTS.seed.md,AGENTS.seed.llm.md}`.
 - Layout (project): `AGENTS.md`, `prompts/{project.md,style.md?}`, `prompts/_mode/`, `codex.yaml`, `codex.sh`, `runs/`.
- - Governance/Propagation: non-project-specific workflow changes get recorded in `prompts/global/` and seed AGENTS templates; proposal/plan updated so scaffolding includes them.
+- Governance/Propagation: non-project-specific workflow changes get recorded in `prompts/global/` and seed AGENTS templates; proposal/plan updated so scaffolding includes them.
+ - TDD Governance: adopt test-driven development with full unit/integration tests for all features in this repo and generated projects; tests written first and required for acceptance.
 - Phase 1 acceptance:
   - new-mode creates mode skeleton
   - new-project scaffolds without overwrites
@@ -22,6 +23,7 @@
   - new-project copies `templates/project/_shared/AGENTS.md` into project root as `AGENTS.md`
   - prompts/global present and used in prompt composition
   - governance rule: changes to global norms propagate to prompts/global and AGENTS templates; logged in DevLog
+  - tests: unit/integration tests (bats) cover CLI flows and guardrails; TDD observed
 \n+## Approval — Tick All That Apply
 
 - Subcommands approved: `new-project`, `run`, `new-mode` [ ]