Initial open-source release (MIT): image2api AI gateway

Full Go backend + Vue 3 frontend, OpenAI-compatible API, multi-provider
account pools, billing/admin, Docker one-command deploy with auto HTTPS.

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>

frontend/src/playground.js

@@ -0,0 +1,26 @@
+// Reactive draft of the 画图 form fields. Lives at module scope so the
+// values survive PlaygroundView being unmounted (navigation to 首页/记录 etc.)
+// and remounted — without this, switching away and back wiped the prompt
+// and selected model. Per-tab only; not persisted to localStorage.
+import { reactive } from 'vue'
+
+export const draft = reactive({
+  mode: '',           // 'image' | 'video'
+  modelId: '',
+  prompt: '',
+  ratio: '',
+  resolution: '',
+  duration: '',
+})
+
+// Copy fields from a server-side job entry (the `/jobs/mine` payload) into
+// the draft so a parallel tab can pick up exactly what's being generated.
+export function applyJobToDraft(entry) {
+  if (!entry) return
+  draft.mode = entry.kind === 'video' ? 'video' : 'image'
+  draft.modelId = entry.model || ''
+  draft.prompt = entry.prompt || ''
+  draft.ratio = entry.ratio || ''
+  draft.resolution = entry.resolution || ''
+  draft.duration = entry.duration || ''
+}