ci: add workflow_dispatch trigger to homebrew update workflow

Allows manually triggering the cask update when the release event
doesn't fire (e.g. when publishing a draft via the GitHub API).

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

Author: nathanialhenniges

.github/workflows/update_homebrew.yml

@@ -3,6 +3,11 @@ name: Update Homebrew Cask
 on:
   release:
     types: [published]
+  workflow_dispatch:
+    inputs:
+      version:
+        description: "Version to release (e.g. 1.1.0)"
+        required: true
 
 jobs:
   update-cask:
@@ -12,7 +17,11 @@ jobs:
       - name: Extract version
         id: version
         run: |
-          VERSION="${GITHUB_REF_NAME#v}"
+          if [ -n "${{ inputs.version }}" ]; then
+            VERSION="${{ inputs.version }}"
+          else
+            VERSION="${GITHUB_REF_NAME#v}"
+          fi
           echo "version=$VERSION" >> "$GITHUB_OUTPUT"
           echo "dmg_name=WolfWave-${VERSION}.dmg" >> "$GITHUB_OUTPUT"
           echo "Version: $VERSION"