feat(models): add google/gemini-3.7-flash to nous + openrouter catalogs, drop gemini-3.6-flash

Swaps the Google flash entry in the OpenRouter and Nous Portal curated
lists to the newly released gemini-3.7-flash (half the price of
3.6-flash: $0.375/M in, $1.875/M out per OpenRouter live metadata;
served on both endpoints, verified live). Also updates the OpenRouter
plugin fallback_models mirror and regenerates model-catalog.json.

Scoped to the two named providers: vertex/gemini/gmi curated lists and
aux defaults still carry 3.6-flash.

hermes_cli/models.py

@@ -67,7 +67,7 @@ OPENROUTER_MODELS: list[tuple[str, str]] = [
     ("openai/gpt-5.4-mini",                    ""),
     # Google
     ("google/gemini-3.1-pro-preview",          ""),
-    ("google/gemini-3.6-flash",                ""),
+    ("google/gemini-3.7-flash",                ""),
     # xAI
     ("x-ai/grok-4.6",                          ""),
     # DeepSeek
@@ -241,7 +241,7 @@ _PROVIDER_MODELS: dict[str, list[str]] = {
         "openai/gpt-5.4-mini",
         # Google
         "google/gemini-3.1-pro-preview",
-        "google/gemini-3.6-flash",
+        "google/gemini-3.7-flash",
         # xAI
         "x-ai/grok-4.6",
         # DeepSeek

plugins/model-providers/openrouter/__init__.py

@@ -244,7 +244,7 @@ openrouter = OpenRouterProfile(
         "anthropic/claude-sonnet-4.6",
         "openai/gpt-5.4",
         "deepseek/deepseek-chat",
-        "google/gemini-3.6-flash",
+        "google/gemini-3.7-flash",
         "qwen/qwen3-plus",
     ),
 )

website/static/api/model-catalog.json

@@ -1,6 +1,6 @@
 {
   "version": 1,
-  "updated_at": "2026-08-12T17:23:25Z",
+  "updated_at": "2026-08-13T18:19:29Z",
   "metadata": {
     "source": "hermes-agent repo",
     "docs": "https://hermes-agent.nousresearch.com/docs/reference/model-catalog"
@@ -81,7 +81,7 @@
           "description": ""
         },
         {
-          "id": "google/gemini-3.6-flash",
+          "id": "google/gemini-3.7-flash",
           "description": ""
         },
         {
@@ -223,7 +223,7 @@
           "id": "google/gemini-3.1-pro-preview"
         },
         {
-          "id": "google/gemini-3.6-flash"
+          "id": "google/gemini-3.7-flash"
         },
         {
           "id": "x-ai/grok-4.6"