docs: enhance test task generation documentation with existing test infrastructure and framework usage

.claude/agents/action-planning-agent.md

@@ -236,6 +236,25 @@ Generate individual `.task/IMPL-*.json` files with the following structure:
 - `agent`: Assigned agent for execution
 - `execution_group`: Parallelization group ID (tasks with same ID can run concurrently) or `null` for sequential tasks
 
+**Test Task Extensions** (for type="test-gen" or type="test-fix"):
+
+```json
+{
+  "meta": {
+    "type": "test-gen|test-fix",
+    "agent": "@code-developer|@test-fix-agent",
+    "test_framework": "jest|vitest|pytest|junit|mocha",
+    "coverage_target": "80%",
+    "use_codex": true|false
+  }
+}
+```
+
+**Test-Specific Fields**:
+- `test_framework`: Existing test framework from project (required for test tasks)
+- `coverage_target`: Target code coverage percentage (optional)
+- `use_codex`: Whether to use Codex for automated fixes in test-fix tasks (optional, default: false)
+
 #### Context Object
 
 ```json
@@ -307,6 +326,32 @@ Generate individual `.task/IMPL-*.json` files with the following structure:
 }
 ```
 
+**Test Task Extensions** (for type="test-gen" or type="test-fix"):
+
+```json
+{
+  "flow_control": {
+    "pre_analysis": [...],
+    "implementation_approach": [...],
+    "target_files": [...],
+    "reusable_test_tools": [
+      "tests/helpers/testUtils.ts",
+      "tests/fixtures/mockData.ts",
+      "tests/setup/testSetup.ts"
+    ],
+    "test_commands": {
+      "run_tests": "npm test",
+      "run_coverage": "npm test -- --coverage",
+      "run_specific": "npm test -- {test_file}"
+    }
+  }
+}
+```
+
+**Test-Specific Fields**:
+- `reusable_test_tools`: List of existing test utility files to reuse (helpers, fixtures, mocks)
+- `test_commands`: Test execution commands from project config (package.json, pytest.ini)
+
 ##### Pre-Analysis Patterns
 
 **Dynamic Step Selection Guidelines**:

.claude/commands/workflow/tools/test-task-generate.md

@@ -20,6 +20,7 @@ Generate test planning documents (IMPL_PLAN.md, test task JSONs, TODO_LIST.md) u
 - **Memory-First**: Reuse loaded documents from conversation memory
 - **MCP-Enhanced**: Use MCP tools for test pattern research and analysis
 - **Path Clarity**: All `focus_paths` prefer absolute paths (e.g., `D:\\project\\src\\module`), or clear relative paths from project root
+- **Leverage Existing Test Infrastructure**: Prioritize using established testing frameworks and tools present in the project
 
 ## Test-Specific Execution Modes
 
@@ -79,7 +80,9 @@ Generate test planning documents (IMPL_PLAN.md, task JSONs, TODO_LIST.md) for te
 
 IMPORTANT: This is TEST PLANNING ONLY - you are generating planning documents, NOT executing tests.
 
-CRITICAL: Follow the progressive loading strategy defined in your agent specification (load context incrementally from memory-first approach)
+CRITICAL:
+- Use existing test frameworks and utilities from the project
+- Follow the progressive loading strategy defined in your agent specification (load context incrementally from memory-first approach)
 
 ## AGENT CONFIGURATION REFERENCE
 All test task generation rules, schemas, and quality standards are defined in your agent specification:
@@ -124,6 +127,7 @@ Task Configuration:
   IMPL-001 (Test Generation):
     - meta.type: "test-gen"
     - meta.agent: "@code-developer" (agent-mode) OR CLI execution (cli-execute-mode)
+    - meta.test_framework: Specify existing framework (e.g., "jest", "vitest", "pytest")
     - flow_control: Test generation strategy from TEST_ANALYSIS_RESULTS.md
 
   IMPL-002+ (Test Execution & Fix):
@@ -144,7 +148,9 @@ Required flow_control fields:
 
 ### TEST_ANALYSIS_RESULTS.md Mapping
 PRIMARY requirements source - extract and map to task JSONs:
-  - Test framework config → meta.test_framework
+  - Test framework config → meta.test_framework (use existing framework from project)
+  - Existing test utilities → flow_control.reusable_test_tools (discovered test helpers, fixtures, mocks)
+  - Test runner commands → flow_control.test_commands (from package.json or pytest config)
   - Coverage targets → meta.coverage_target
   - Test requirements → context.requirements (quantified with explicit counts)
   - Test generation strategy → IMPL-001 flow_control.implementation_approach
@@ -154,6 +160,7 @@ PRIMARY requirements source - extract and map to task JSONs:
 1. Test Task JSON Files (.task/IMPL-*.json)
    - 6-field schema with quantified requirements from TEST_ANALYSIS_RESULTS.md
    - Test-specific metadata: type, agent, use_codex, test_framework, coverage_target
+   - flow_control includes: reusable_test_tools, test_commands (from project config)
    - Artifact references from test-context-package.json
    - Absolute paths in context.files_to_test
 
@@ -172,7 +179,8 @@ PRIMARY requirements source - extract and map to task JSONs:
 Hard Constraints:
   - Task count: minimum 2, maximum 12
   - All requirements quantified from TEST_ANALYSIS_RESULTS.md
-  - Test framework configuration validated
+  - Test framework matches existing project framework
+  - flow_control includes reusable_test_tools and test_commands from project
   - use_codex flag correctly set in IMPL-002+ tasks
   - Absolute paths for all focus_paths
   - Acceptance criteria include verification commands