feat(codex): register models by plan tier

internal/watcher/synthesizer/file.go

@@ -10,6 +10,7 @@ import (
 	"strings"
 	"time"
 
+	"github.com/router-for-me/CLIProxyAPI/v6/internal/auth/codex"
 	"github.com/router-for-me/CLIProxyAPI/v6/internal/runtime/geminicli"
 	coreauth "github.com/router-for-me/CLIProxyAPI/v6/sdk/cliproxy/auth"
 )
@@ -149,6 +150,16 @@ func synthesizeFileAuths(ctx *SynthesisContext, fullPath string, data []byte) []
 		}
 	}
 	ApplyAuthExcludedModelsMeta(a, cfg, perAccountExcluded, "oauth")
+	// For codex auth files, extract plan_type from the JWT id_token.
+	if provider == "codex" {
+		if idTokenRaw, ok := metadata["id_token"].(string); ok && strings.TrimSpace(idTokenRaw) != "" {
+			if claims, errParse := codex.ParseJWTToken(idTokenRaw); errParse == nil && claims != nil {
+				if pt := strings.TrimSpace(claims.CodexAuthInfo.ChatgptPlanType); pt != "" {
+					a.Attributes["plan_type"] = pt
+				}
+			}
+		}
+	}
 	if provider == "gemini-cli" {
 		if virtuals := SynthesizeGeminiVirtualAuths(a, metadata, now); len(virtuals) > 0 {
 			for _, v := range virtuals {