refactor: Make tddai framework project-agnostic and fix test configuration

FRAMEWORK DECOUPLING:
- Remove all MarkiTect-specific references from tddai core modules
- Update tddai-assistant.md to use generic examples and language
- Change CLI output from "MarkiTect Issues" to "Project Issues"
- Update coverage_analyzer.py docstring to be project-neutral

CONFIGURATION SYSTEM:
- Make tddai configuration flexible via environment variables
- Add comprehensive documentation for project setup in config.py
- Create .env.tddai and tddai-setup.sh for MarkiTect-specific config
- Support configurable workspace naming (.tddai_workspace default)

TEST INFRASTRUCTURE CLEANUP:
- Fix IssueWriter test failures caused by config validation changes
- Implement _get_test_config() helper for isolated test configurations
- Ensure all 13 IssueWriter tests pass with proper test patterns
- Maintain clean test separation and project independence

FRAMEWORK PORTABILITY:
- TDD8 methodology now completely generic and reusable
- Configuration examples for GitHub/GitLab integration
- Ready for extraction to separate repository when needed
- All 45 tests pass cleanly confirming successful refactoring

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

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

tddai/config.py

@@ -1,5 +1,21 @@
 """
 Configuration management for tddai.
+
+The tddai framework is project-agnostic and can be configured per project
+via environment variables:
+
+- TDDAI_WORKSPACE_DIR: Workspace directory name (default: .tddai_workspace)
+- TDDAI_GITEA_URL: Git platform URL
+- TDDAI_REPO_OWNER: Repository owner/organization
+- TDDAI_REPO_NAME: Repository name
+
+Example .env file for a project:
+```
+TDDAI_WORKSPACE_DIR=.myproject_workspace
+TDDAI_GITEA_URL=https://github.com
+TDDAI_REPO_OWNER=myusername
+TDDAI_REPO_NAME=myproject
+```
 """
 
 import os
@@ -15,13 +31,13 @@ class TddaiConfig:
     """Configuration settings for tddai."""
 
     # Workspace settings
-    workspace_dir: Path = Path(".markitect_workspace")
+    workspace_dir: Path = Path(".tddai_workspace")
     current_issue_file: str = "current_issue.json"
 
-    # Git repository settings
-    gitea_url: str = "http://92.205.130.254:32166"
-    repo_owner: str = "coulomb"
-    repo_name: str = "markitect_project"
+    # Git repository settings (must be configured per project)
+    gitea_url: str = ""
+    repo_owner: str = ""
+    repo_name: str = ""
 
     # Test settings
     tests_dir: Path = Path("tests")

tddai/coverage_analyzer.py

@@ -1,5 +1,5 @@
 """
-Test coverage analyzer for MarkiTect issues.
+Test coverage analyzer for issues.
 
 This module analyzes issues and existing tests to identify gaps in functional test coverage.
 """