ci(publish): OIDC trusted publishing + prerelease->TestPyPI routing + twine check

Build once (uv build) and verify with twine check, then publish via OIDC
(no stored token): prereleases -> TestPyPI, stable releases -> PyPI.

Author: Abhinavexist

.github/workflows/publish.yml

@@ -4,20 +4,56 @@ on:
   release:
     types: [published]
 
+permissions:
+  contents: read
+
 jobs:
-  publish:
+  build:
     runs-on: ubuntu-latest
-    environment:
-      name: pypi
-      url: https://pypi.org/p/interfaze
-    permissions:
-      id-token: write
     steps:
       - uses: actions/checkout@v4
       - uses: astral-sh/setup-uv@v6
         with:
           python-version: "3.12"
       - name: Build sdist + wheel
         run: uv build
-      - name: Publish to PyPI (trusted publishing)
-        uses: pypa/gh-action-pypi-publish@release/v1
+      - name: Verify metadata
+        run: uvx twine check dist/*
+      - uses: actions/upload-artifact@v4
+        with:
+          name: dist
+          path: dist/
+
+  testpypi:
+    needs: build
+    if: github.event.release.prerelease == true
+    runs-on: ubuntu-latest
+    environment:
+      name: testpypi
+      url: https://test.pypi.org/p/interfaze
+    permissions:
+      id-token: write
+    steps:
+      - uses: actions/download-artifact@v4
+        with:
+          name: dist
+          path: dist/
+      - uses: pypa/gh-action-pypi-publish@release/v1
+        with:
+          repository-url: https://test.pypi.org/legacy/
+
+  pypi:
+    needs: build
+    if: github.event.release.prerelease == false
+    runs-on: ubuntu-latest
+    environment:
+      name: pypi
+      url: https://pypi.org/p/interfaze
+    permissions:
+      id-token: write
+    steps:
+      - uses: actions/download-artifact@v4
+        with:
+          name: dist
+          path: dist/
+      - uses: pypa/gh-action-pypi-publish@release/v1