fix(release): set version when publishing oh-my-openagent

The publish step was updating name and optionalDependencies but not
version, causing npm to try publishing the base package.json version
(3.11.0) instead of the release version (3.12.0).

Error was: 'You cannot publish over the previously published versions: 3.11.0'

.github/workflows/publish.yml

@@ -233,11 +233,10 @@ jobs:
         run: |
           VERSION="${{ steps.version.outputs.version }}"
           
-          # Update package name to oh-my-openagent
-          jq '.name = "oh-my-openagent"' package.json > tmp.json && mv tmp.json package.json
-          
-          # Update optionalDependencies to use oh-my-openagent naming
+          # Update package name, version, and optionalDependencies for oh-my-openagent
           jq --arg v "$VERSION" '
+            .name = "oh-my-openagent" |
+            .version = $v |
             .optionalDependencies = (
               .optionalDependencies | to_entries |
               map(.key = (.key | sub("^oh-my-opencode-"; "oh-my-openagent-")) | .value = $v) |