feat: support regex-prefixed ignored upstream models

controller/channel_upstream_update.go

@@ -3,6 +3,7 @@ package controller
 import (
 	"fmt"
 	"net/http"
+	"regexp"
 	"slices"
 	"strings"
 	"sync"
@@ -169,10 +170,7 @@ func collectPendingUpstreamModelChangesFromModels(
 		upstreamSet[modelName] = struct{}{}
 	}
 
-	ignoredSet := make(map[string]struct{})
-	for _, modelName := range normalizeModelNames(ignoredModels) {
-		ignoredSet[modelName] = struct{}{}
-	}
+	normalizedIgnoredModels := normalizeModelNames(ignoredModels)
 
 	redirectSourceSet := make(map[string]struct{}, len(modelMapping))
 	redirectTargetSet := make(map[string]struct{}, len(modelMapping))
@@ -193,7 +191,13 @@ func collectPendingUpstreamModelChangesFromModels(
 		if _, ok := coveredUpstreamSet[modelName]; ok {
 			return false
 		}
-		if _, ok := ignoredSet[modelName]; ok {
+		if lo.ContainsBy(normalizedIgnoredModels, func(ignoredModel string) bool {
+			if regexBody, ok := strings.CutPrefix(ignoredModel, "regex:"); ok {
+				matched, err := regexp.MatchString(strings.TrimSpace(regexBody), modelName)
+				return err == nil && matched
+			}
+			return ignoredModel == modelName
+		}) {
 			return false
 		}
 		return true

controller/channel_upstream_update_test.go

@@ -111,6 +111,18 @@ func TestCollectPendingUpstreamModelChangesFromModels_WithModelMapping(t *testin
 	require.Equal(t, []string{"stale-model"}, pendingRemoveModels)
 }
 
+func TestCollectPendingUpstreamModelChangesFromModels_WithIgnoredRegexPatterns(t *testing.T) {
+	pendingAddModels, pendingRemoveModels := collectPendingUpstreamModelChangesFromModels(
+		[]string{"gpt-4o"},
+		[]string{"gpt-4o", "claude-3-5-sonnet", "sora-video", "gpt-4.1"},
+		[]string{"regex:^sora-.*$", "gpt-4.1"},
+		nil,
+	)
+
+	require.Equal(t, []string{"claude-3-5-sonnet"}, pendingAddModels)
+	require.Equal(t, []string{}, pendingRemoveModels)
+}
+
 func TestBuildUpstreamModelUpdateTaskNotificationContent_OmitOverflowDetails(t *testing.T) {
 	channelSummaries := make([]upstreamModelUpdateChannelSummary, 0, 12)
 	for i := 0; i < 12; i++ {