feat(media): Vertex AI (Google) speech, transcription, music & video generation

config/quality/file-size-baseline.json

@@ -12,6 +12,7 @@
   "_rebaseline_2026_06_15_3881_nous_validator": "Issue #3881 own growth: validation.ts 4394->4407 (+13 = treat any non-auth 4xx (400/404/422) from the Nous Research probe as a valid key — the request shape/model was wrong, not the credentials — mirroring the longcat/nvidia validators, plus the corrected Hermes-4-70B probe model). Cohesive validator branch; not extractable.",
   "_rebaseline_2026_06_15_3877_byteplus": "Issue #3877 own growth: providerRegistry.ts 4708->4730 (+22 = a byteplus (BytePlus ModelArk) registry entry — OpenAI-compatible, Ark base ap-southeast-1, Bearer, 4 seed models — modeled on the volcengine entry; byteplus was in APIKEY_PROVIDERS but unregistered here so validation returned {unsupported:true}). Cohesive provider registration; not extractable.",
   "_rebaseline_2026_06_15_3910_nested_combo_ctx": "PR #3910 net +1: providerRegistry.ts 4730->4731 (test-registry contextLength metadata for the nested combo-ref LCD regression test). opencode-plugin-only behavioral change; no core routing/virtualFactory touched.",
+  "_rebaseline_2026_06_15_3929_vertex_media": "PR #3929 own growth: audioSpeech.ts 952->965 (+13) and videoGeneration.ts 1026->1078 (+52) = vertex/* media branches (Gemini TTS, Veo predictLongRunning poll) wired into the speech/video handlers; new logic lives in open-sse/executors/vertexMedia.ts (341, under cap). Cohesive media-provider feature.",
   "cap": 800,
   "frozen": {
     "open-sse/config/providerRegistry.ts": 4731,
@@ -26,13 +27,13 @@
     "open-sse/executors/grok-web.ts": 1871,
     "open-sse/executors/muse-spark-web.ts": 1284,
     "open-sse/executors/perplexity-web.ts": 868,
-    "open-sse/handlers/audioSpeech.ts": 952,
+    "open-sse/handlers/audioSpeech.ts": 965,
     "open-sse/handlers/chatCore.ts": 5815,
     "open-sse/handlers/imageGeneration.ts": 3777,
     "open-sse/handlers/responseSanitizer.ts": 1103,
     "open-sse/handlers/search.ts": 1442,
     "open-sse/handlers/sseParser.ts": 812,
-    "open-sse/handlers/videoGeneration.ts": 1026,
+    "open-sse/handlers/videoGeneration.ts": 1078,
     "open-sse/mcp-server/schemas/tools.ts": 1437,
     "open-sse/mcp-server/server.ts": 1457,
     "open-sse/mcp-server/tools/advancedTools.ts": 1118,

open-sse/config/audioRegistry.ts

@@ -23,6 +23,19 @@ export interface AudioProvider {
 }
 
 export const AUDIO_TRANSCRIPTION_PROVIDERS: Record<string, AudioProvider> = {
+  vertex: {
+    id: "vertex",
+    baseUrl: "https://us-central1-aiplatform.googleapis.com/v1",
+    authType: "apikey",
+    authHeader: "bearer",
+    format: "vertex-gemini",
+    models: [
+      { id: "gemini-2.5-flash", name: "Gemini 2.5 Flash (Vertex Transcribe)" },
+      { id: "gemini-2.5-pro", name: "Gemini 2.5 Pro (Vertex Transcribe)" },
+      { id: "gemini-2.0-flash", name: "Gemini 2.0 Flash (Vertex Transcribe)" },
+    ],
+  },
+
   openai: {
     id: "openai",
     baseUrl: "https://api.openai.com/v1/audio/transcriptions",
@@ -148,6 +161,18 @@ export const AUDIO_TRANSCRIPTION_PROVIDERS: Record<string, AudioProvider> = {
 };
 
 export const AUDIO_SPEECH_PROVIDERS: Record<string, AudioProvider> = {
+  vertex: {
+    id: "vertex",
+    baseUrl: "https://us-central1-aiplatform.googleapis.com/v1",
+    authType: "apikey",
+    authHeader: "bearer",
+    format: "vertex-gemini-tts",
+    models: [
+      { id: "gemini-2.5-flash-preview-tts", name: "Gemini 2.5 Flash TTS (Vertex)" },
+      { id: "gemini-2.5-pro-preview-tts", name: "Gemini 2.5 Pro TTS (Vertex)" },
+    ],
+  },
+
   openai: {
     id: "openai",
     baseUrl: "https://api.openai.com/v1/audio/speech",

open-sse/config/musicRegistry.ts

@@ -24,6 +24,15 @@ interface MusicProvider {
 }
 
 export const MUSIC_PROVIDERS: Record<string, MusicProvider> = {
+  vertex: {
+    id: "vertex",
+    baseUrl: "https://us-central1-aiplatform.googleapis.com/v1",
+    authType: "apikey",
+    authHeader: "bearer",
+    format: "vertex-lyria",
+    models: [{ id: "lyria-002", name: "Lyria 2 (Vertex)" }],
+  },
+
   kie: {
     id: "kie",
     baseUrl: "https://api.kie.ai",

open-sse/config/videoRegistry.ts

@@ -26,6 +26,19 @@ interface VideoProvider {
 }
 
 export const VIDEO_PROVIDERS: Record<string, VideoProvider> = {
+  vertex: {
+    id: "vertex",
+    baseUrl: "https://us-central1-aiplatform.googleapis.com/v1",
+    authType: "apikey",
+    authHeader: "bearer",
+    format: "vertex-veo",
+    models: [
+      { id: "veo-3.0-generate-001", name: "Veo 3.0 (Vertex)" },
+      { id: "veo-3.0-fast-generate-001", name: "Veo 3.0 Fast (Vertex)" },
+      { id: "veo-2.0-generate-001", name: "Veo 2.0 (Vertex)" },
+    ],
+  },
+
   kie: {
     id: "kie",
     baseUrl: "https://api.kie.ai",