ci: add release-please PyPI publishing

.github/workflows/release-please.yml

@@ -0,0 +1,49 @@
+name: Release Please
+
+on:
+  push:
+    branches:
+      - main
+  workflow_dispatch:
+
+permissions:
+  contents: write
+  pull-requests: write
+
+jobs:
+  release-please:
+    name: release please
+    runs-on: ubuntu-latest
+    outputs:
+      release_created: ${{ steps.release.outputs.release_created }}
+    steps:
+      - name: Create release PR or GitHub release
+        id: release
+        uses: googleapis/release-please-action@8b8fd2cc23b2e18957157a9d923d75aa0c6f6ad5 # v4
+        with:
+          token: ${{ secrets.GITHUB_TOKEN }}
+
+  publish:
+    name: publish to PyPI
+    runs-on: ubuntu-latest
+    needs: release-please
+    if: ${{ needs.release-please.outputs.release_created == 'true' }}
+    environment:
+      name: release
+      url: https://pypi.org/project/detect-agent/
+    permissions:
+      contents: read
+      id-token: write
+    steps:
+      - uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd # v6.0.2
+
+      - name: Install uv
+        uses: astral-sh/setup-uv@d4b2f3b6ecc6e67c4457f6d3e41ec42d3d0fcb86 # v5.4.2
+        with:
+          version: "0.10.2"
+
+      - name: Build package
+        run: uv build
+
+      - name: Publish package
+        run: uv publish --trusted-publishing always

.release-please-manifest.json

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+{
+  ".": "0.2.1"
+}

release-please-config.json

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+{
+  "$schema": "https://raw.githubusercontent.com/googleapis/release-please/main/schemas/config.json",
+  "packages": {
+    ".": {
+      "release-type": "python",
+      "package-name": "detect_agent",
+      "extra-files": [
+        {
+          "type": "toml",
+          "path": "uv.lock",
+          "jsonpath": "$.package[?(@.name.value=='detect-agent')].version"
+        }
+      ]
+    }
+  }
+}