feat(ci): build and upload extension ZIP

.forgejo/workflows/build-ext.yml

@@ -0,0 +1,23 @@
+name: Build extension ZIP
+
+on:
+  push:
+    branches: ['main']
+    paths:
+      - 'extension/**/*'
+
+jobs:
+  publish:
+    name: Build extension
+    runs-on: docker
+
+    steps:
+      - name: Checkout code
+        uses: actions/checkout@v4
+      - name: Build extension
+        runs: ./build-ext.sh
+      - name: Upload extension
+        actions/upload-artifact@v4
+        with:
+          name: aci-ext.zip
+          path: aci-ext.zip

.forgejo/workflows/publish.yml

@@ -3,6 +3,8 @@ name: Publish docker image
 on:
   push:
     branches: ['main']
+    paths:
+      - 'backend/**/*'
 
 jobs:
   publish:

.gitignore

@@ -2,3 +2,4 @@ __pycache__/
 .direnv/
 result
 checkin.db
+aci-*.zip

build-ext.sh

@@ -0,0 +1,8 @@
+#!/usr/bin/env bash
+
+set -uex pipefail
+
+cd extension/
+echo "Building ZIP..."
+zip -- -r -FS ../aci-ext.zip *
+cd ../