add version in top bar and update checking

test/build-metadata.test.ts

@@ -0,0 +1,81 @@
+import assert from 'node:assert/strict'
+import test from 'node:test'
+import { resolveAppBuildMetadata } from '../scripts/build/resolveAppBuildMetadata.ts'
+
+test('env overrides win without querying git', () => {
+  const gitCalls: string[] = []
+  const buildMetadata = resolveAppBuildMetadata({
+    cwd: '/tmp/prism',
+    env: {
+      PRISM_GIT_COMMIT: 'deadbeefcafebabe1234567890abcdef12345678',
+      PRISM_GIT_DIRTY: 'true',
+    },
+    runGitCommand: (cwd, args) => {
+      gitCalls.push(`${cwd}:${args.join(' ')}`)
+      return ''
+    },
+  })
+
+  assert.deepEqual(buildMetadata, {
+    commitHash: 'deadbeefcafebabe1234567890abcdef12345678',
+    isDirty: true,
+  })
+  assert.equal(gitCalls.length, 0)
+})
+
+test('clean git checkout resolves commit metadata', () => {
+  const buildMetadata = resolveAppBuildMetadata({
+    cwd: '/tmp/prism',
+    env: {},
+    runGitCommand: (_cwd, args) => {
+      if (args[0] === 'rev-parse') {
+        return '0123456789abcdef0123456789abcdef01234567\n'
+      }
+      if (args[0] === 'status') {
+        return ''
+      }
+      throw new Error(`Unexpected git command: ${args.join(' ')}`)
+    },
+  })
+
+  assert.deepEqual(buildMetadata, {
+    commitHash: '0123456789abcdef0123456789abcdef01234567',
+    isDirty: false,
+  })
+})
+
+test('dirty git checkout marks the build as dirty', () => {
+  const buildMetadata = resolveAppBuildMetadata({
+    cwd: '/tmp/prism',
+    env: {},
+    runGitCommand: (_cwd, args) => {
+      if (args[0] === 'rev-parse') {
+        return '89abcdef0123456789abcdef0123456789abcdef\n'
+      }
+      if (args[0] === 'status') {
+        return ' M src/main/index.ts\n'
+      }
+      throw new Error(`Unexpected git command: ${args.join(' ')}`)
+    },
+  })
+
+  assert.deepEqual(buildMetadata, {
+    commitHash: '89abcdef0123456789abcdef0123456789abcdef',
+    isDirty: true,
+  })
+})
+
+test('missing git metadata falls back to version-only mode', () => {
+  const buildMetadata = resolveAppBuildMetadata({
+    cwd: '/tmp/prism',
+    env: {},
+    runGitCommand: () => {
+      throw new Error('git unavailable')
+    },
+  })
+
+  assert.deepEqual(buildMetadata, {
+    commitHash: null,
+    isDirty: false,
+  })
+})