feat(server): dispatch /v1/videos and /v1/videos/sync by model

Registers the OpenAI/vLLM-Omni video generation endpoints as
model-dispatched routes so llama-swap can swap in video upstreams
(e.g. vllm serve <model> --omni, or a ComfyUI shim exposing the same
shape). Extraction is content-type driven, so both multipart form and
JSON bodies resolve the model field.

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01AXQxVhXBw8PwFAtsVrXSmj

internal/server/server.go

@@ -80,6 +80,11 @@ var modelPostJSONRoutes = []string{
 var modelPostFormRoutes = []string{
 	"/v1/audio/transcriptions",
 	"/v1/images/edits",
+
+	// video generation (vLLM-Omni / OpenAI videos shape); extraction is
+	// content-type driven, so JSON bodies dispatch on these paths too
+	"/v1/videos",
+	"/v1/videos/sync",
 }
 
 // modelGetRoutes are model-dispatched GET endpoints (the model arrives as a

internal/server/server_test.go

@@ -1,9 +1,11 @@
 package server
 
 import (
+	"bytes"
 	"context"
 	"encoding/json"
 	"io"
+	"mime/multipart"
 	"net/http"
 	"net/http/httptest"
 	"strings"
@@ -339,3 +341,44 @@ func TestServer_LogStream_UnknownID_Returns400(t *testing.T) {
 		t.Errorf("status=%d want 400", w.Code)
 	}
 }
+
+func TestServer_VideoRoutesDispatch(t *testing.T) {
+	s := newTestServer(
+		newStubRouter([]string{"videogen-model"}, "video response"),
+		newStubRouter(nil, ""),
+	)
+
+	// JSON body on /v1/videos.
+	body := strings.NewReader(`{"model":"videogen-model","prompt":"a cat"}`)
+	req := httptest.NewRequest(http.MethodPost, "/v1/videos", body)
+	req.Header.Set("Content-Type", "application/json")
+	w := httptest.NewRecorder()
+	s.ServeHTTP(w, req)
+	if w.Code != http.StatusOK || w.Body.String() != "video response" {
+		t.Fatalf("/v1/videos: status=%d body=%q", w.Code, w.Body.String())
+	}
+
+	// Multipart form on /v1/videos/sync.
+	var buf bytes.Buffer
+	mw := multipart.NewWriter(&buf)
+	mw.WriteField("model", "videogen-model")
+	mw.WriteField("prompt", "a cat")
+	mw.Close()
+	req = httptest.NewRequest(http.MethodPost, "/v1/videos/sync", &buf)
+	req.Header.Set("Content-Type", mw.FormDataContentType())
+	w = httptest.NewRecorder()
+	s.ServeHTTP(w, req)
+	if w.Code != http.StatusOK || w.Body.String() != "video response" {
+		t.Fatalf("/v1/videos/sync: status=%d body=%q", w.Code, w.Body.String())
+	}
+
+	// Unknown model on a video route still 404s.
+	body = strings.NewReader(`{"model":"nope","prompt":"a cat"}`)
+	req = httptest.NewRequest(http.MethodPost, "/v1/videos", body)
+	req.Header.Set("Content-Type", "application/json")
+	w = httptest.NewRecorder()
+	s.ServeHTTP(w, req)
+	if w.Code != http.StatusNotFound {
+		t.Fatalf("/v1/videos unknown model: status=%d want 404", w.Code)
+	}
+}