feat: update specialized agents to use new issue-facade system

Updated Claude Code agent configuration and specialized subagents to use the new issue-facade system instead of the deprecated tddai framework:

Agent Updates:
- Updated .claude/settings.local.json with issue-facade CLI permissions
- Removed obsolete tddai_cli.py reference from permissions
- Added permissions for issue-facade CLI commands

Subagent Updates:
- agent-project-management.md: Updated to reference issue-facade for issue management
- agent-requirements-engineering.md: Replaced tddai references with issue-facade
- agent-tdd-workflow.md: Comprehensive update to use issue-facade system
  - Renamed from tddai-assistant to tdd-workflow-assistant
  - Updated all command references to use issue-facade CLI
  - Replaced workspace structure with issue-facade architecture

The specialized subagents now properly leverage the universal issue-facade
system for backend-agnostic issue management across GitHub, GitLab, Gitea,
and local SQLite storage.

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

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

agents/agent-requirements-engineering.md

@@ -115,8 +115,9 @@ python tools/requirements_engineering_toolkit.py validate-mocks --test-file test
 
 ```makefile
 # Enhanced Makefile targets
-tdd-start: validate-requirements
-	python tddai_cli.py tdd-start $(NUM)
+issue-start: validate-requirements
+	# Use issue-facade for issue management
+	cd issue-facade && python -m cli.main show $(NUM)
 
 validate-requirements:
 	python tools/requirements_engineering_toolkit.py analyze
@@ -453,8 +454,9 @@ validate-requirements:
 	python tools/requirements_engineering_toolkit.py analyze
 	python tools/requirements_engineering_toolkit.py validate-mocks
 
-tdd-start: validate-requirements
-	python tddai_cli.py tdd-start $(NUM)
+issue-start: validate-requirements
+	# Use issue-facade for issue management
+	cd issue-facade && python -m cli.main show $(NUM)
 ```
 
 ### Tool Dependencies