v0.2.1 model names config-driven

server/backends/hardware.js

@@ -18,26 +18,25 @@ const ANALYZE_MAX_TOKENS = 16000;
 // internet, so generous timeouts. Same scale as Recap's defaults.
 const DEFAULT_TIMEOUT_MS = 900_000;
 
-// Pull the model identifier out of the prompt if the operator wants a
-// specific Gemma SKU. We default to "gemma3:27b" which is the typical
-// Ollama tag for the analysis-capable Gemma model. Operators with a
-// different deployment can update this via a future StartOS action;
-// for v0.2 it's hardcoded.
-const HARDWARE_ANALYZE_MODEL = process.env.RELAY_GEMMA_MODEL || "gemma3:27b";
-
-// Parakeet's typical model identifier. Mirrors what Recap's whisper.js
-// sends when the operator points the relay at a NeMo Parakeet HTTP
-// wrapper. Configurable via env var for non-default deployments.
-const HARDWARE_TRANSCRIBE_MODEL =
-  process.env.RELAY_PARAKEET_MODEL || "parakeet-tdt-0.6b-v3";
+// Defaults used only when the route handler doesn't supply explicit
+// model names (e.g. a unit test instantiating the backend directly).
+// In production the model names come from relay-config.json via
+// setParakeetUrl / setGemmaUrl, so the operator can swap models on
+// their Ollama deployment without rebuilding the relay.
+const DEFAULT_TRANSCRIBE_MODEL = "parakeet-tdt-0.6b-v3";
+const DEFAULT_ANALYZE_MODEL = "gemma3:27b";
 
 export function createHardwareBackend({
   parakeetBaseURL = "",
   gemmaBaseURL = "",
+  parakeetModel = DEFAULT_TRANSCRIBE_MODEL,
+  gemmaModel = DEFAULT_ANALYZE_MODEL,
   timeoutMs = DEFAULT_TIMEOUT_MS,
 } = {}) {
   const parakeet = parakeetBaseURL ? parakeetBaseURL.replace(/\/$/, "") : "";
   const gemma = gemmaBaseURL ? gemmaBaseURL.replace(/\/$/, "") : "";
+  const transcribeModel = parakeetModel || DEFAULT_TRANSCRIBE_MODEL;
+  const analyzeModel = gemmaModel || DEFAULT_ANALYZE_MODEL;
 
   return {
     hasTranscribe: !!parakeet,
@@ -69,7 +68,7 @@ export function createHardwareBackend({
         const form = new FormData();
         const blob = new Blob([audio], { type: mimeType });
         form.append("file", blob, "audio.bin");
-        form.append("model", HARDWARE_TRANSCRIBE_MODEL);
+        form.append("model", transcribeModel);
         if (richMode) {
           form.append("response_format", "verbose_json");
           form.append("timestamp_granularities[]", "segment");
@@ -171,7 +170,7 @@ export function createHardwareBackend({
           method: "POST",
           headers: { "Content-Type": "application/json" },
           body: JSON.stringify({
-            model: HARDWARE_ANALYZE_MODEL,
+            model: analyzeModel,
             max_tokens: ANALYZE_MAX_TOKENS,
             messages: [{ role: "user", content: prompt }],
             stream: false,

server/config.js

@@ -16,6 +16,8 @@ function defaultConfig() {
     relay_gemini_api_key: "",
     relay_parakeet_base_url: "",
     relay_gemma_base_url: "",
+    relay_parakeet_model: "parakeet-tdt-0.6b-v3",
+    relay_gemma_model: "gemma3:27b",
     relay_keysat_base_url: "https://keysat.xyz",
     relay_admin_username: "",
     relay_admin_password_hash: "",

server/routes/analyze.js

@@ -84,6 +84,8 @@ export function analyzeRouter() {
         const backend = createHardwareBackend({
           parakeetBaseURL: cfg.relay_parakeet_base_url,
           gemmaBaseURL: cfg.relay_gemma_base_url,
+          parakeetModel: cfg.relay_parakeet_model,
+          gemmaModel: cfg.relay_gemma_model,
         });
         result = await backend.analyzeText({ prompt });
       }

server/routes/transcribe.js

@@ -110,6 +110,8 @@ export function transcribeRouter() {
         const backend = createHardwareBackend({
           parakeetBaseURL: cfg.relay_parakeet_base_url,
           gemmaBaseURL: cfg.relay_gemma_base_url,
+          parakeetModel: cfg.relay_parakeet_model,
+          gemmaModel: cfg.relay_gemma_model,
         });
         result = await backend.transcribeAudio({
           audio: req.file.buffer,