Harden Codex auth refresh and responses compatibility

hermes_cli/codex_models.py

@@ -0,0 +1,91 @@
+"""Codex model discovery from local Codex CLI cache/config."""
+
+from __future__ import annotations
+
+import json
+from pathlib import Path
+from typing import List, Optional
+
+from hermes_cli.auth import resolve_codex_home_path
+
+DEFAULT_CODEX_MODELS: List[str] = [
+    "gpt-5-codex",
+    "gpt-5.3-codex",
+    "gpt-5.2-codex",
+    "gpt-5.1-codex",
+]
+
+
+def _read_default_model(codex_home: Path) -> Optional[str]:
+    config_path = codex_home / "config.toml"
+    if not config_path.exists():
+        return None
+    try:
+        import tomllib
+    except Exception:
+        return None
+    try:
+        payload = tomllib.loads(config_path.read_text(encoding="utf-8"))
+    except Exception:
+        return None
+    model = payload.get("model") if isinstance(payload, dict) else None
+    if isinstance(model, str) and model.strip():
+        return model.strip()
+    return None
+
+
+def _read_cache_models(codex_home: Path) -> List[str]:
+    cache_path = codex_home / "models_cache.json"
+    if not cache_path.exists():
+        return []
+    try:
+        raw = json.loads(cache_path.read_text(encoding="utf-8"))
+    except Exception:
+        return []
+
+    entries = raw.get("models") if isinstance(raw, dict) else None
+    sortable = []
+    if isinstance(entries, list):
+        for item in entries:
+            if not isinstance(item, dict):
+                continue
+            slug = item.get("slug")
+            if not isinstance(slug, str) or not slug.strip():
+                continue
+            slug = slug.strip()
+            if "codex" not in slug.lower():
+                continue
+            if item.get("supported_in_api") is False:
+                continue
+            visibility = item.get("visibility")
+            if isinstance(visibility, str) and visibility.strip().lower() == "hidden":
+                continue
+            priority = item.get("priority")
+            rank = int(priority) if isinstance(priority, (int, float)) else 10_000
+            sortable.append((rank, slug))
+
+    sortable.sort(key=lambda item: (item[0], item[1]))
+    deduped: List[str] = []
+    for _, slug in sortable:
+        if slug not in deduped:
+            deduped.append(slug)
+    return deduped
+
+
+def get_codex_model_ids() -> List[str]:
+    codex_home = resolve_codex_home_path()
+    ordered: List[str] = []
+
+    default_model = _read_default_model(codex_home)
+    if default_model:
+        ordered.append(default_model)
+
+    for model_id in _read_cache_models(codex_home):
+        if model_id not in ordered:
+            ordered.append(model_id)
+
+    for model_id in DEFAULT_CODEX_MODELS:
+        if model_id not in ordered:
+            ordered.append(model_id)
+
+    return ordered