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+---
+name: 'step-04-coverage-plan'
+description: 'Design test coverage, priorities, execution strategy, and estimates'
+nextStepFile: './step-05-generate-output.md'
+outputFile: '{test_artifacts}/test-design-progress.md'
+---
+
+# Step 4: Coverage Plan & Execution Strategy
+
+## STEP GOAL
+
+Create the test coverage matrix, prioritize scenarios, and define execution strategy, resource estimates, and quality gates.
+
+## MANDATORY EXECUTION RULES
+
+- 📖 Read the entire step file before acting
+- ✅ Speak in `{communication_language}`
+- 🚫 Avoid redundant coverage across test levels
+
+---
+
+## EXECUTION PROTOCOLS:
+
+- 🎯 Follow the MANDATORY SEQUENCE exactly
+- 💾 Record outputs before proceeding
+- 📖 Load the next step only when instructed
+
+## CONTEXT BOUNDARIES:
+
+- Available context: config, loaded artifacts, and knowledge fragments
+- Focus: this step's goal only
+- Limits: do not execute future steps
+- Dependencies: prior steps' outputs (if any)
+
+## MANDATORY SEQUENCE
+
+**CRITICAL:** Follow this sequence exactly. Do not skip, reorder, or improvise.
+
+## 1. Coverage Matrix
+
+For each requirement or risk-driven scenario:
+
+- Decompose into atomic test scenarios
+- Select **test level** (E2E / API / Component / Unit) using `test-levels-framework.md`
+- Ensure no duplicate coverage across levels
+- Assign priorities (P0–P3) using `test-priorities-matrix.md`
+
+**Priority rules:**
+
+- P0: Blocks core functionality + high risk + no workaround
+- P1: Critical paths + medium/high risk
+- P2: Secondary flows + low/medium risk
+- P3: Nice-to-have, exploratory, benchmarks
+
+---
+
+## 2. Execution Strategy (Keep Simple)
+
+Use a **PR / Nightly / Weekly** model:
+
+- **PR**: All functional tests if <15 minutes
+- **Nightly/Weekly**: Long-running or expensive suites (perf, chaos, large datasets)
+- Avoid re-listing all tests (refer to coverage plan)
+
+---
+
+## 3. Resource Estimates (Ranges Only)
+
+Provide intervals (no false precision):
+
+- P0: e.g., "~25–40 hours"
+- P1: e.g., "~20–35 hours"
+- P2: e.g., "~10–30 hours"
+- P3: e.g., "~2–5 hours"
+- Total and timeline as ranges
+
+---
+
+## 4. Quality Gates
+
+Define thresholds:
+
+- P0 pass rate = 100%
+- P1 pass rate ≥ 95%
+- High-risk mitigations complete before release
+- Coverage target ≥ 80% (adjust if justified)
+
+---
+
+### 5. Save Progress
+
+**Save this step's accumulated work to `{outputFile}`.**
+
+- **If `{outputFile}` does not exist** (first save), create it with YAML frontmatter:
+
+  ```yaml
+  ---
+  stepsCompleted: ['step-04-coverage-plan']
+  lastStep: 'step-04-coverage-plan'
+  lastSaved: '{date}'
+  ---
+  ```
+
+  Then write this step's output below the frontmatter.
+
+- **If `{outputFile}` already exists**, update:
+  - Add `'step-04-coverage-plan'` to `stepsCompleted` array (only if not already present)
+  - Set `lastStep: 'step-04-coverage-plan'`
+  - Set `lastSaved: '{date}'`
+  - Append this step's output to the appropriate section of the document.
+
+Load next step: `{nextStepFile}`
+
+## 🚨 SYSTEM SUCCESS/FAILURE METRICS:
+
+### ✅ SUCCESS:
+
+- Step completed in full with required outputs
+
+### ❌ SYSTEM FAILURE:
+
+- Skipped sequence steps or missing outputs
+  **Master Rule:** Skipping steps is FORBIDDEN.