fix: align pixi environments with AG CI flow patterns

- Added python dependency to base pixi dependencies
- Added pypi-dependencies for proper editable install
- Added pythonpath to pytest config for src/ discovery
- Removed PYTHONPATH workaround from CI workflow
- Configuration now aligns with AG_pyproject_tiered_template

This should resolve the remaining pip/install-editable conflicts
and make CI environments work consistently.

Iteration: 3/5
Issue: CI environment and dependency resolution
References: .claude/commands/references/AG_pyproject_*

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

Co-Authored-By: Claude <[email protected]>

Author: MementoRC

.github/workflows/ci.yml

@@ -40,7 +40,7 @@ jobs:
     - name: Run tests
       shell: bash
       run: |
-        PYTHONPATH=src pixi run -e quality pytest tests/ --cov=src/uckn --cov-report=xml -v
+        pixi run -e quality pytest tests/ --cov=src/uckn --cov-report=xml -v
 
     - name: Upload coverage to Codecov
       if: matrix.os == 'ubuntu-latest' && matrix.python-version == '3.11'

pyproject.toml

@@ -52,6 +52,7 @@ platforms = ["linux-64"]  # Development environment stays lean
 
 [tool.pixi.dependencies]
 # Core dependencies for linux-64 CI environment
+python = ">=3.10"
 alembic = "*"
 click = "*"
 fastapi = "*"
@@ -66,6 +67,9 @@ sqlalchemy = "*"
 toml = "*"
 uvicorn = "*"
 
+[tool.pixi.pypi-dependencies]
+uckn-framework = { path = ".", editable = true }
+
 # ML/Heavy packages - test if they work with single platform:
 # chromadb = "*"  # May still cause issues
 # numpy = "*"
@@ -287,6 +291,7 @@ testpaths = ["tests"]
 python_files = ["test_*.py", "*_test.py"]
 python_classes = ["Test*"]
 python_functions = ["test_*"]
+pythonpath = ["src"]
 addopts = [
     "--strict-markers",
     "--strict-config",