refactor: rename workflow input from 'beta' to 'prerelease'

Changed the workflow input from 'beta' to 'prerelease' to avoid
confusion. The input triggers prerelease publishing for any prerelease
channel (fix, feat, or beta), not just the beta channel.

Now you select:
- dry-run → test without publishing
- prerelease → publish fix/feat/beta channels
- production → production release from main

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

Author: abueide

.github/workflows/release.yml

@@ -9,7 +9,7 @@ on:
         type: choice
         options:
           - dry-run
-          - beta
+          - prerelease
           - production
 
 concurrency:
@@ -63,7 +63,7 @@ jobs:
 
   release-beta:
     name: Release (prerelease)
-    if: inputs.type == 'beta'
+    if: inputs.type == 'prerelease'
     needs: [ci]
     runs-on: ubuntu-latest
     environment: Publish-Prerelease

PRERELEASE_SETUP.md

@@ -94,7 +94,7 @@ To verify OIDC is configured:
 
 ```bash
 # From your feature branch
-gh workflow run release.yml -f type=dry-run
+gh workflow run release.yml -f type=dry-run --ref fix/your-branch
 ```
 
 This will:
@@ -105,8 +105,8 @@ This will:
 ### 2. Publish a Prerelease
 
 ```bash
-# From a fix/feat/chore branch
-gh workflow run release.yml -f type=beta
+# From a fix/feat branch
+gh workflow run release.yml -f type=prerelease --ref fix/your-branch
 ```
 
 This will: