feat(plugin): add MiniMax-H3 /v2 video generation to the hailuo task … (#7168)

* feat(plugin): add MiniMax-H3 /v2 video generation to the hailuo task plugin

MiniMax-H3 speaks a different contract from the other Hailuo models, so the
hailuo task plugin now branches on the upstream model instead of adding a Go
adaptor:

- submit builds /v2/video_generation with a multimodal `content` array
  (text, first/last frame images, reference video/audio, or a full
  `metadata.content` passthrough), an explicit `ratio`, and 768P/2K
  resolutions; `metadata.callback_url` and `metadata.aigc_watermark` pass
  through
- query uses /v2/query/video_generation/{task_id} and parses the
  `{"task": {...}}` envelope, falling back to the /v1 shapes for every other
  model
- the /v2 result is a public CDN URL, so its artifact is proxied
  credentialless instead of through /v1/files/download
- request bounds (duration 4-15, resolution 768P/2K, ratio whitelist, at most
  2 frame images and 9/3/3 reference images/videos/audios) are enforced while
  the request body is built, which the host runs during validation, so an
  out-of-range duration is rejected with a 400 before it can become a billing
  multiplier
- duration and resolution are reported as usage facts only. Like the rest of
  this plugin, extractUsage returns no billing ratios, so per-call pricing is
  flat and 2K/duration pricing is expressed through the model's tiered billing
  expression over those facts.

Query hooks are driver hooks and are documented to receive `ctx.model` and
`ctx.upstreamModel`, but polling has no relay info and never populated them.
The polling and realtime-fetch call sites now carry the persisted task model
properties and the plugin adaptor maps them onto the query context, with
`upstreamModel` falling back to the origin name for tasks submitted without a
channel mapping.

* fix(plugin): validate Hailuo H3 requests and errors

relay/channel/task/jsplugin/adaptor.go

@@ -528,6 +528,16 @@ func (a *TaskAdaptor) FetchBatchTasks(baseURL, key string, taskIDs []string, pro
 
 func (a *TaskAdaptor) FetchTask(baseURL, key string, body map[string]any, proxy string) (*http.Response, error) {
 	ctx := map[string]any{"taskId": body["task_id"], "action": body["action"], "requestBody": body, "baseUrl": baseURL}
+	// Query hooks are driver hooks and must see the same model identities as
+	// submit hooks. Polling has no relay info, so they arrive with the
+	// persisted task properties the caller puts in the fetch body.
+	originModel, _ := body["model"].(string)
+	upstreamModel, _ := body["upstream_model"].(string)
+	if upstreamModel == "" {
+		upstreamModel = originModel
+	}
+	ctx["model"] = originModel
+	ctx["upstreamModel"] = upstreamModel
 	auth, err := resolveAuth(a.plugin.Meta.Auth, key, proxy)
 	if err != nil {
 		return nil, err

relay/channel/task/jsplugin/adaptor_test.go

@@ -1208,3 +1208,51 @@ func TestTaskAdaptorBuildSubmitReceivesMappedUpstreamModel(t *testing.T) {
 	assert.Equal(t, "declared-model", decoded["upstreamModel"])
 	assert.Equal(t, "declared-model", decoded["model"])
 }
+
+// Polling has no relay info, so query hooks can only branch on the model when
+// the host forwards the persisted task identities from the fetch body.
+func TestTaskAdaptorFetchTaskExposesModelIdentities(t *testing.T) {
+	service.InitHttpClient()
+	var requested string
+	server := httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
+		requested = r.URL.RequestURI()
+		_, _ = w.Write([]byte(`{}`))
+	}))
+	defer server.Close()
+
+	source := `
+export const meta = {apiVersion:1,key:"query-model",name:"Query Model",version:"1.0.0",author:{name:"Test"},models:["alias"],fetchMode:"per_task"};
+export function buildSubmitRequest(ctx){return {url:ctx.baseUrl+"/submit"}}
+export function parseSubmitResponse(){return {taskId:"1"}}
+export function buildQueryRequest(ctx){return {url:ctx.baseUrl+"/tasks/"+ctx.model+"/"+ctx.upstreamModel+"/"+ctx.taskId,method:"GET"}}
+export function parseTaskResult(){return {status:"SUCCESS"}}
+`
+	plugin, err := pluginruntime.NewRegistry().Register(source, pluginruntime.Options{})
+	require.NoError(t, err)
+	adaptor := New(plugin)
+
+	testCases := []struct {
+		name string
+		body map[string]any
+		want string
+	}{
+		{
+			name: "mapped model",
+			body: map[string]any{"task_id": "t1", "model": "alias", "upstream_model": "declared-model"},
+			want: "/tasks/alias/declared-model/t1",
+		},
+		{
+			name: "unmapped model falls back to the origin name",
+			body: map[string]any{"task_id": "t1", "model": "alias"},
+			want: "/tasks/alias/alias/t1",
+		},
+	}
+	for _, testCase := range testCases {
+		t.Run(testCase.name, func(t *testing.T) {
+			resp, fetchErr := adaptor.FetchTask(server.URL, "secret", testCase.body, "")
+			require.NoError(t, fetchErr)
+			require.NoError(t, resp.Body.Close())
+			assert.Equal(t, testCase.want, requested)
+		})
+	}
+}