revert: simplify build system by removing manylinux/cibuildwheel

- Revert to simple Ubuntu 22.04 builds that should work with Colab
- Remove all manylinux container complexity
- Colab runs on Ubuntu 22.04, so direct builds should be compatible
- Restore build-reusable.yml to v0.1.5 version
- Remove cibuildwheel option from release workflow

This should fix the overcomplicated build issues while maintaining
Colab compatibility through direct Ubuntu 22.04 builds.

.github/workflows/release-manual.yml

@@ -7,11 +7,6 @@ on:
         description: 'Version to release (e.g., 0.1.2)'
         required: true
         type: string
-      use_cibuildwheel:
-        description: 'Use cibuildwheel for better compatibility (recommended for Colab)'
-        required: false
-        type: boolean
-        default: false
 
 jobs:
   update-version:
@@ -47,26 +42,17 @@ jobs:
           echo "commit-sha=$COMMIT_SHA" >> $GITHUB_OUTPUT
           echo "✅ Pushed version update: $COMMIT_SHA"
 
-  build-packages-reusable:
-    name: Build packages (Standard)
+  build-packages:
+    name: Build packages
     needs: update-version
-    if: ${{ !inputs.use_cibuildwheel }}
     uses: ./.github/workflows/build-reusable.yml
     with:
       ref: ${{ needs.update-version.outputs.commit-sha }}
-  
-  build-packages-cibuildwheel:
-    name: Build packages (cibuildwheel)
-    needs: update-version
-    if: ${{ inputs.use_cibuildwheel }}
-    uses: ./.github/workflows/build-cibuildwheel.yml
-    with:
-      ref: ${{ needs.update-version.outputs.commit-sha }}
 
   publish:
     name: Publish and Release
-    needs: [update-version, build-packages-reusable, build-packages-cibuildwheel]
-    if: always() && needs.update-version.result == 'success' && (needs.build-packages-reusable.result == 'success' || needs.build-packages-cibuildwheel.result == 'success')
+    needs: [update-version, build-packages]
+    if: always() && needs.update-version.result == 'success' && needs.build-packages.result == 'success'
     runs-on: ubuntu-latest
     permissions:
       contents: write