feat: use branch-specific prerelease channels instead of beta

Changed from a single "beta" prerelease channel to branch-specific
channels:
- fix/* → x.x.x-fix.N
- feat/* → x.x.x-feat.N
- chore/* → x.x.x-chore.N
- beta → x.x.x-beta.N (explicit)

This provides better semantic meaning for prerelease versions. Instead
of all non-master branches being "beta", each category gets its own
channel.

Examples:
- fix/ios-zero-second-sessions → 2.22.1-fix.1
- feat/new-feature → 2.22.1-feat.1
- beta → 2.22.1-beta.1

Updated workflow to use new "Publish-Prerelease" environment instead
of "Publish-Beta" to reflect the broader scope.

Co-Authored-By: Claude Sonnet 4.5 <noreply@anthropic.com>

Author: abueide

.github/workflows/release.yml

@@ -62,11 +62,11 @@ jobs:
           GH_TOKEN: ${{ github.token }}
 
   release-beta:
-    name: Release (beta)
+    name: Release (prerelease)
     if: inputs.type == 'beta'
     needs: [ci]
     runs-on: ubuntu-latest
-    environment: Publish-Beta
+    environment: Publish-Prerelease
     permissions:
       contents: write
       issues: write
@@ -81,7 +81,7 @@ jobs:
       - name: Install devbox
         uses: jetify-com/devbox-install-action@v0.14.0
 
-      - name: Release (beta)
+      - name: Release (prerelease)
         run: |
           BRANCH_NAME=$(git rev-parse --abbrev-ref HEAD)
           devbox run -e GITHUB_REF=refs/heads/$BRANCH_NAME release

release.config.js

@@ -2,7 +2,10 @@ module.exports = {
   branches: [
     'master',
     { name: '+([0-9])?(.{+([0-9]),x}).x', prerelease: true }, // support branches (e.g., 1.x, 1.2.x)
-    { name: '*', prerelease: 'beta' }, // any other branch = beta prerelease (fixes SemVer compliance)
+    { name: 'beta', prerelease: 'beta' }, // explicit beta channel
+    { name: 'fix/*', prerelease: 'fix' }, // fix branches → x.x.x-fix.N
+    { name: 'feat/*', prerelease: 'feat' }, // feature branches → x.x.x-feat.N
+    { name: 'chore/*', prerelease: 'chore' }, // chore branches → x.x.x-chore.N
   ],
   tagFormat: '${name}-v${version}',
   plugins: [