ci: force rebuild of vendor dependencies on all platforms

This commit changes the CI cache strategy to always rebuild vendor
dependencies instead of relying on cached artifacts. This ensures:

1. No cross-platform contamination from cached directories
2. Fresh builds with correct platform-specific assembly files
3. Consistent build environment across all CI runs

Changes:
- Bump cache version from v9 to v10 to invalidate old caches
- Remove conditional build steps (always build vendors)
- Update restore-keys to match exact hash (no fallback to old caches)
- Apply to Windows, Linux, and macOS workflows

This fixes issues where:
- Linux was getting macOS BoringSSL assembly files
- Windows couldn't find ssl.lib due to corrupted cache
- Builds were failing with platform detection errors

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude <noreply@anthropic.com>

Author: arman-bd

.github/workflows/_build_linux.yml

@@ -33,9 +33,9 @@ jobs:
       uses: actions/cache/restore@v4
       with:
         path: vendor
-        key: vendor-linux-manylinux-${{ hashFiles('scripts/linux/setup_vendors.sh') }}-v9
+        key: vendor-linux-manylinux-${{ hashFiles('scripts/linux/setup_vendors.sh') }}-v10
         restore-keys: |
-          vendor-linux-manylinux-
+          vendor-linux-manylinux-${{ hashFiles('scripts/linux/setup_vendors.sh') }}-v10
 
     # Build wheels with cibuildwheel (handles manylinux containers)
     # The vendor directory is mounted into the container automatically
@@ -52,7 +52,7 @@ jobs:
       uses: actions/cache/save@v4
       with:
         path: vendor
-        key: vendor-linux-manylinux-${{ hashFiles('scripts/linux/setup_vendors.sh') }}-v9
+        key: vendor-linux-manylinux-${{ hashFiles('scripts/linux/setup_vendors.sh') }}-v10
 
     # Setup Python versions for testing
     - name: Setup Python versions

.github/workflows/_build_macos.yml

@@ -37,13 +37,12 @@ jobs:
       uses: actions/cache/restore@v4
       with:
         path: vendor
-        key: vendor-macos-${{ hashFiles('scripts/darwin/setup_vendors.sh') }}-v9
+        key: vendor-macos-${{ hashFiles('scripts/darwin/setup_vendors.sh') }}-v10
         restore-keys: |
-          vendor-macos-
+          vendor-macos-${{ hashFiles('scripts/darwin/setup_vendors.sh') }}-v10
 
-    # Build vendor dependencies if not cached
+    # Build vendor dependencies (always build to ensure clean state)
     - name: Build vendor dependencies
-      if: steps.cache-vendor.outputs.cache-hit != 'true'
       run: |
         bash scripts/darwin/setup_vendors.sh
 
@@ -53,7 +52,7 @@ jobs:
       uses: actions/cache/save@v4
       with:
         path: vendor
-        key: vendor-macos-${{ hashFiles('scripts/darwin/setup_vendors.sh') }}-v9
+        key: vendor-macos-${{ hashFiles('scripts/darwin/setup_vendors.sh') }}-v10
 
     # Verify vendor build
     - name: Verify vendor build

.github/workflows/_build_windows.yml

@@ -38,13 +38,12 @@ jobs:
       uses: actions/cache/restore@v4
       with:
         path: vendor
-        key: vendor-windows-${{ hashFiles('scripts/windows/setup_vendors.sh') }}-v9
+        key: vendor-windows-${{ hashFiles('scripts/windows/setup_vendors.sh') }}-v10
         restore-keys: |
-          vendor-windows-
+          vendor-windows-${{ hashFiles('scripts/windows/setup_vendors.sh') }}-v10
 
-    # Build vendor dependencies if not cached
+    # Build vendor dependencies (always build to ensure clean state)
     - name: Build vendor dependencies
-      if: steps.cache-vendor.outputs.cache-hit != 'true'
       run: |
         bash scripts/windows/setup_vendors.sh
       shell: bash
@@ -55,7 +54,7 @@ jobs:
       uses: actions/cache/save@v4
       with:
         path: vendor
-        key: vendor-windows-${{ hashFiles('scripts/windows/setup_vendors.sh') }}-v9
+        key: vendor-windows-${{ hashFiles('scripts/windows/setup_vendors.sh') }}-v10
 
     # Verify vendor build
     - name: Verify vendor build