add builder and updater

scripts/smoke.cjs

@@ -0,0 +1,61 @@
+// Launch the compiled app with isolated data and capture its update panel without signing in.
+const { app } = require('electron')
+const { mkdirSync, writeFileSync } = require('node:fs')
+const { join } = require('node:path')
+const assert = require('node:assert/strict')
+
+const profile = join(__dirname, '../dist/smoke-profile')
+mkdirSync(profile, { recursive: true })
+mkdirSync(join(__dirname, '../dist/local'), { recursive: true })
+app.setName('capsule-local')
+app.setVersion(require('../package.json').version)
+app.setPath('appData', profile)
+const timeout = setTimeout(() => {
+  console.error('Smoke test timed out.')
+  app.exit(1)
+}, 30000)
+app.on('browser-window-created', (_event, window) => {
+  window.show = () => {} // Exercise the real app without interrupting the user's desktop.
+  window.webContents.once('did-finish-load', async () => {
+    try {
+      const state = await window.webContents.executeJavaScript(`(async () => {
+        const state = await window.capsule.updateStatus()
+        await window.capsule.checkForUpdates()
+        await new Promise(resolve => setTimeout(resolve, 250))
+        return {
+          state,
+          panelVisible: !document.getElementById('capsule-updates').hidden,
+          checkHidden: document.getElementById('update-check').hidden,
+          restartHidden: document.getElementById('update-install').hidden,
+          label: document.getElementById('update-status').textContent
+        }
+      })()`)
+      assert.equal(state.state.status, 'disabled')
+      assert.equal(state.state.currentVersion, require('../package.json').version)
+      assert.equal(state.panelVisible, true)
+      assert.equal(state.checkHidden, true)
+      assert.equal(state.restartHidden, true)
+      assert.match(state.label, /automatic updates are disabled/)
+      assert.equal(app.getPath('userData'), join(profile, 'capsule-local'))
+      const image = await window.webContents.capturePage()
+      writeFileSync(join(__dirname, '../dist/local/smoke.png'), image.toPNG())
+      // Exercise the ready prompt with synthetic state; never invoke installation.
+      window.webContents.send('capsule:updates:changed', {
+        status: 'ready', currentVersion: app.getVersion(), version: '0.1.1', percent: 100
+      })
+      const readyVisible = await window.webContents.executeJavaScript(`new Promise(resolve => setTimeout(() => {
+        const button = document.getElementById('update-install')
+        resolve(!button.hidden && document.getElementById('update-status').textContent.includes('Save your work'))
+      }, 100))`)
+      assert.equal(readyVisible, true)
+      writeFileSync(join(__dirname, '../dist/local/smoke-ready.png'), (await window.webContents.capturePage()).toPNG())
+      console.log(JSON.stringify({ smoke: 'passed', ...state }))
+      clearTimeout(timeout)
+      app.exit(0)
+    } catch (error) {
+      console.error(error)
+      app.exit(1)
+    }
+  })
+})
+require('../out/main/index.js')