ci(release): add workflow_dispatch input for manual release tagging

.gitea/workflows/release.yml

@@ -4,6 +4,11 @@ on:
   push:
     tags:
       - 'v*.*.*'
+  workflow_dispatch:
+    inputs:
+      tag:
+        description: 'Tag to release (e.g. v1.2.3)'
+        required: true
 
 env:
   GITEA_SERVER: https://git.warky.dev
@@ -38,7 +43,8 @@ jobs:
       - name: Set build vars
         id: vars
         run: |
-          echo "VERSION=${GITHUB_REF_NAME}" >> $GITHUB_OUTPUT
+          TAG="${{ github.event.inputs.tag || github.ref_name }}"
+          echo "VERSION=${TAG}" >> $GITHUB_OUTPUT
           echo "COMMIT=$(git rev-parse --short HEAD)" >> $GITHUB_OUTPUT
           echo "BUILD_DATE=$(date -u +%Y-%m-%dT%H:%M:%SZ)" >> $GITHUB_OUTPUT
 
@@ -66,7 +72,7 @@ jobs:
       - name: Create Gitea Release
         id: create_release
         run: |
-          VERSION="${{ steps.vars.outputs.VERSION }}"
+          export VERSION="${{ steps.vars.outputs.VERSION }}"
           BODY=$(python3 <<'PY'
           import json, subprocess, os
           version = os.environ['VERSION']