[micro-agent] Swap pip → uv in CI workflow(s) (#1)

Swap the `python -m pip install` setup steps in `ci.yml` and
`release.yml` for `uv pip install --system`, gated on
`astral-sh/setup-uv@08807647e7069bb48b6ef5acd8ec9567f424441b # v8.1.0`.
Drops the `pip install -U pip` warmup; version pins for project deps
(`.[dev]`, `build`) are unchanged. The `python -m build` and
`pypa/gh-action-pypi-publish` steps are left intact.

Cross-references the resilience pattern landed in
evalops/maestro-internal#1492.

Co-authored-by: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

Author: haasonsaas

.github/workflows/ci.yml

@@ -18,10 +18,11 @@ jobs:
         with:
           python-version: '3.12'
 
+      - name: Install uv
+        uses: astral-sh/setup-uv@08807647e7069bb48b6ef5acd8ec9567f424441b # v8.1.0
+
       - name: Install dependencies
-        run: |
-          python -m pip install --upgrade pip
-          pip install -e .[dev]
+        run: uv pip install --system -e '.[dev]'
 
       - name: Run tests
         env:

.github/workflows/release.yml

@@ -16,9 +16,11 @@ jobs:
       - uses: actions/setup-python@v5
         with:
           python-version: '3.12'
+      - name: Install uv
+        uses: astral-sh/setup-uv@08807647e7069bb48b6ef5acd8ec9567f424441b # v8.1.0
       - name: Build sdist and wheel
         run: |
-          python -m pip install --upgrade pip build
+          uv pip install --system build
           python -m build
       - name: Publish to PyPI
         uses: pypa/gh-action-pypi-publish@release/v1