Add TDD Developer Agent with RED-GREEN-REFACTOR workflow

- Created dev-tdd.md agent with strict test-first development methodology
- Implemented complete TDD workflow with RED-GREEN-REFACTOR cycles
- Added comprehensive validation checklist (250+ items)
- Integrated RVTM traceability for requirement-test-implementation tracking
- Includes ATDD test generation and Story Context integration
- Agent name: Ted (TDD Developer Agent) with ✅ icon

🤖 Generated with [Claude Code](https://claude.ai/code)

Co-Authored-By: Claude <noreply@anthropic.com>

bmad/bmm/workflows/4-implementation/dev-story-tdd/workflow.yaml

@@ -0,0 +1,63 @@
+name: dev-story-tdd
+description: "Execute a story using Test-Driven Development with RED-GREEN-REFACTOR methodology, automatically maintaining full RVTM traceability between requirements, tests, and implementation"
+author: "BMad"
+
+# Critical variables from config
+config_source: "/home/bj/python/BMAD-METHOD/bmad/bmm/config.yaml"
+output_folder: "{config_source}:output_folder"
+user_name: "{config_source}:user_name"
+communication_language: "{config_source}:communication_language"
+date: system-generated
+
+# Workflow components
+installed_path: "/home/bj/python/BMAD-METHOD/bmad/bmm/workflows/4-implementation/dev-story-tdd"
+instructions: "{installed_path}/instructions.md"
+validation: "{installed_path}/checklist.md"
+
+# This is an action workflow (no output template document)
+template: false
+
+# Variables (can be provided by caller)
+variables:
+  story_path: ""
+  run_tests_command: "auto" # 'auto' = infer from repo, or override with explicit command
+  strict: true # if true, halt on validation failures
+  story_dir: "{config_source}:dev_story_location" # Directory containing story markdown files
+  story_selection_limit: 10
+  run_until_complete: true # Continue through all tasks without pausing except on HALT conditions
+  force_yolo: true # Hint executor to activate #yolo: skip optional prompts and elicitation
+  verify_red_state: true # Verify tests fail before implementation
+  refactor_required: true # Require explicit refactor step
+
+# Recommended inputs
+recommended_inputs:
+  - story_markdown: "Path to the story markdown file (Tasks/Subtasks, Acceptance Criteria present)"
+  - story_context_json: "Story Context JSON with acceptance criteria and test strategy"
+
+# Required tools (conceptual; executor should provide equivalents)
+required_tools:
+  - read_file
+  - write_file
+  - search_repo
+  - run_tests
+  - list_files
+  - file_info
+
+tags:
+  - development
+  - tdd
+  - test-driven-development
+  - red-green-refactor
+  - atdd
+  - story-execution
+  - tests
+  - validation
+  - rvtm
+  - traceability
+  - bmad-v6
+
+execution_hints:
+  interactive: false # Minimize prompts; intended to run to completion
+  autonomous: true # Proceed without user input unless blocked
+  iterative: true
+  test_first: true # CRITICAL: Tests before implementation