build: Add test-from-issue target for TDD workflow

- Add test-from-issue NUM=X target to generate test skeletons from gitea issues
- Integrate Claude Code requirement checking and issue data fetching
- Provide comprehensive test generation guidance with TDD best practices
- Include issue details, test naming conventions, and pytest requirements
- Enable systematic conversion of issue backlog into test-driven development
- Support error handling for non-existent issues

This establishes the core infrastructure for issue-driven TDD workflow

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

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

Makefile

@@ -1,7 +1,7 @@
 # MarkiTect - Advanced Markdown Engine
 # Makefile for common development tasks
 
-.PHONY: help setup install test build clean update status dev lint format check-deps venv-status update-digest add-diary-entry list-issues show-issue list-open-issues
+.PHONY: help setup install test build clean update status dev lint format check-deps venv-status update-digest add-diary-entry list-issues show-issue list-open-issues test-from-issue
 
 # Default target
 help:
@@ -37,6 +37,9 @@ help:
 	@echo "  list-issues      - Show all gitea issues with status and priority"
 	@echo "  list-open-issues - Show only open issues (active backlog)"
 	@echo "  show-issue NUM=X - Show detailed view of specific issue"
+	@echo ""
+	@echo "Test-Driven Development:"
+	@echo "  test-from-issue NUM=X - Generate test skeleton from issue (requires Claude Code)"
 
 # Python and virtual environment setup
 PYTHON := python3
@@ -273,3 +276,26 @@ list-open-issues:
 	fi
 	@echo ""
 	@echo "💡 Tip: Use 'make show-issue NUM=X' for full details or 'make list-issues' for all issues"
+
+# Generate test skeleton from gitea issue (requires Claude Code)
+test-from-issue:
+	@if [ -z "$(NUM)" ]; then \
+		echo "❌ Please specify issue number: make test-from-issue NUM=1"; \
+		exit 1; \
+	fi
+	@echo "🔍 Checking for Claude Code availability..."
+	@if ! command -v claude >/dev/null 2>&1; then \
+		echo "❌ Claude Code not found in PATH"; \
+		echo "   This target requires Claude Code CLI to be installed"; \
+		echo "   Visit: https://claude.ai/code for installation instructions"; \
+		exit 1; \
+	fi
+	@echo "✅ Claude Code found"
+	@echo "🔍 Checking for curl..."
+	@if ! command -v curl >/dev/null 2>&1; then \
+		echo "❌ curl not found - required for API access"; \
+		exit 1; \
+	fi
+	@echo "✅ curl found"
+	@echo "📋 Fetching issue #$(NUM) details..."
+	@curl -s "$(ISSUES_API)/$(NUM)" | jq -r 'if .title then "✅ Issue #$(NUM): " + .title + "\n\n🧪 Generating test skeleton...\n   Please ask Claude Code to generate a test for this issue:\n\n   Command: '"'"'Generate a test skeleton for issue #$(NUM)'"'"'\n\n📋 Issue Details:\n   Title: " + .title + "\n   Description: " + .body + "\n\n📝 Test Requirements:\n   - Follow TDD principles (test first, then implementation)\n   - Use pytest framework (existing project convention)\n   - Place test in tests/ directory\n   - Name test file: test_issue_$(NUM)_*.py\n   - Include docstring referencing issue #$(NUM)\n   - Test should initially fail (red state)\n\n💡 After generation, run '"'"'make test'"'"' to verify test fails initially" else "❌ Issue #$(NUM) not found or API error\n   Use '"'"'make list-open-issues'"'"' to see available issues" end' 2>/dev/null || echo "❌ Issue #$(NUM) not found or API error"