ci(release): grant contents:write, skip-existing on PyPI, decouple crates from CLI build

- Top-level permissions: contents: write so softprops/action-gh-release
  can actually create the Release.
- pypa/gh-action-pypi-publish: skip-existing: true so re-runs don't fail
  when a version already exists.
- publish-crates no longer depends on build-cli; crates.io publication
  is orthogonal to the binary-archive build.

First attempt at v0.1.0-rc.1 published evolveai 0.1.0 to PyPI but
failed to create the GitHub Release or publish to crates.io. Deleting
and re-tagging after this fix.

Author: NORTHTEKDevs

.github/workflows/release.yml

@@ -8,6 +8,9 @@ on:
 env:
   CARGO_TERM_COLOR: always
 
+permissions:
+  contents: write
+
 jobs:
   build-cli:
     name: Build CLI (${{ matrix.target }})
@@ -95,11 +98,11 @@ jobs:
         with:
           packages-dir: wheels/
           password: ${{ secrets.PYPI_API_TOKEN }}
+          skip-existing: true
 
   publish-crates:
     name: Publish to crates.io
     runs-on: ubuntu-latest
-    needs: build-cli
     steps:
       - uses: actions/checkout@v4
       - uses: dtolnay/rust-toolchain@stable