feat(models): refresh model catalog hourly instead of daily (#35756)

Lower the model_catalog disk-cache TTL from 24h to 1h so freshly
published model-catalog.json deploys reach the picker within an hour
instead of up to a day. The picker now refetches on the next
`hermes model` / `/model` once the cache is older than 1h; younger
than 1h still serves the cache (no network hit), and network failures
still fall back to the stale copy.

- DEFAULT_TTL_HOURS 24 -> 1 (model_catalog.py)
- DEFAULT_CONFIG model_catalog.ttl_hours 24 -> 1, _config_version 24 -> 25
- migration v24->25 rewrites a stale ttl_hours:24 to 1, preserving any
  custom value the user set

E2E: verified >1h refetches / <1h skips, and migration rewrites 24->1
while preserving a custom 6.

hermes_cli/config.py

@@ -1903,7 +1903,7 @@ DEFAULT_CONFIG = {
         # Disk cache TTL in hours.  Beyond this, the CLI refetches on the
         # next /model or `hermes model` invocation; network failures
         # silently fall back to the stale cache.
-        "ttl_hours": 24,
+        "ttl_hours": 1,
         # Optional per-provider override URLs for third parties that want
         # to self-host their own curation list using the same schema.
         # Example:
@@ -2151,7 +2151,7 @@ DEFAULT_CONFIG = {
 
 
     # Config schema version - bump this when adding new required fields
-    "_config_version": 24,
+    "_config_version": 25,
 }
 
 # =============================================================================
@@ -4344,6 +4344,22 @@ def migrate_config(interactive: bool = True, quiet: bool = False) -> Dict[str, A
                         f"{', '.join(added_aux)}"
                     )
 
+    # ── Version 24 → 25: lower model_catalog TTL 24h → 1h ──
+    # The model picker now refreshes its curated list hourly so freshly
+    # published model-catalog.json deploys reach users without a day-long
+    # stale window. Only rewrite the OLD default (24) — never clobber a
+    # value the user deliberately customized.
+    if current_ver < 25:
+        config = read_raw_config()
+        raw_mc = config.get("model_catalog")
+        if isinstance(raw_mc, dict) and raw_mc.get("ttl_hours") == 24:
+            raw_mc["ttl_hours"] = 1
+            config["model_catalog"] = raw_mc
+            save_config(config)
+            results["config_added"].append("model_catalog.ttl_hours 24→1")
+            if not quiet:
+                print("  ✓ Lowered model_catalog.ttl_hours to 1 (hourly picker refresh)")
+
     if current_ver < latest_ver and not quiet:
         print(f"Config version: {current_ver} → {latest_ver}")
     

hermes_cli/model_catalog.py

@@ -73,7 +73,7 @@ DEFAULT_CATALOG_URL = (
 DEFAULT_CATALOG_FALLBACK_URLS: tuple[str, ...] = (
     "https://raw.githubusercontent.com/NousResearch/hermes-agent/main/website/static/api/model-catalog.json",
 )
-DEFAULT_TTL_HOURS = 24
+DEFAULT_TTL_HOURS = 1
 DEFAULT_FETCH_TIMEOUT = 8.0
 SUPPORTED_SCHEMA_VERSION = 1