feat(directives): harvest 10 process/workflow directives from AGENTS.md + workflow.md

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# tdd_red_green_required — v1
**Why this iteration:** Lifted verbatim from `conductor/workflow.md` §"Standard Task Workflow" steps 4-6 (lines 78-100). This is the baseline encoding — the numbered-step style currently in production.
Future variants will test alternative encodings (rationale-first, tabular) against this baseline.
**Source:** `conductor/workflow.md:78-100`
---
4. **Write Failing Tests (Red Phase):**
- **Pre-Delegation Checkpoint:** Before spawning a worker for dangerous or non-trivial changes, ensure your current progress is staged (`git add .`) or committed. This prevents losing iterations if a sub-agent incorrectly uses `git restore`.
- **Zero-Assertion Ban:** You MUST NOT write tests that contain only `pass` or lack meaningful assertions. A test is only valid if it contains assertions that explicitly test the behavioral change and verify the failure condition.
- **Code Style:** ALWAYS explicitly mention "Use exactly 1-space indentation for Python code" when prompting a sub-agent.
- **Delegate Test Creation:** Do NOT write test code directly. Spawn a Tier 3 Worker via the **OpenCode Task tool** with `subagent_type: "tier3-worker"` and a **surgical prompt** specifying WHERE (file:line range), WHAT (test to create), HOW (which assertions/fixtures to use), and SAFETY (thread constraints if applicable). Example: `"Write tests in tests/test_cost_tracker.py for cost_tracker.py:estimate_cost(). Test all model patterns in MODEL_PRICING dict. Assert unknown model returns 0. Use 1-space indentation."` (If repeating due to failures, set the subagent's `failure_count` higher to switch to a more capable model.) **Note:** the legacy `python scripts/mma_exec.py --role tier3-worker` invocation is DEPRECATED (see §"Conductor Token Firewalling" below); use the OpenCode Task tool instead.
- Take the code generated by the Worker and apply it.
- **CRITICAL:** Run the tests and confirm that they fail as expected. This is the "Red" phase of TDD. Do not proceed until you have failing tests.
5. **Implement to Pass Tests (Green Phase):**
- **Pre-Delegation Checkpoint:** Ensure current progress is staged or committed before delegating.
- **Code Style:** ALWAYS explicitly mention "Use exactly 1-space indentation for Python code" when prompting a sub-agent.
- **Delegate Implementation:** Do NOT write the implementation code directly. Spawn a Tier 3 Worker via the **OpenCode Task tool** (`subagent_type: "tier3-worker"`) with a **surgical prompt** specifying WHERE (file:line range to modify), WHAT (the specific change), HOW (which API calls, data structures, or patterns to use), and SAFETY (thread-safety constraints). Example: `"In gui_2.py _render_mma_dashboard (lines 2685-2699), extend the token usage table from 3 to 5 columns by adding 'Model' and 'Est. Cost'. Use imgui.table_setup_column(). Import cost_tracker. Call cost_tracker.estimate_cost(model, input_tokens, output_tokens). Use 1-space indentation."` (If repeating due to failures, set `failure_count` higher to switch to a more capable model.) **Note:** the legacy `python scripts/mma_exec.py --role tier3-worker` invocation is DEPRECATED; use the OpenCode Task tool.
- Take the code generated by the Worker and apply it.
- Run the test suite again and confirm that all tests now pass. This is the "Green" phase.
6. **Refactor (Optional but Recommended):**
- With the safety of passing tests, refactor the implementation code and the test code to improve clarity, remove duplication, and enhance performance without changing the external behavior.
- Rerun tests to ensure they still pass after refactoring.