diff --git a/.air.toml b/.air.toml
new file mode 100644
index 00000000..dc332411
--- /dev/null
+++ b/.air.toml
@@ -0,0 +1,46 @@
+root = "."
+testdata_dir = "testdata"
+tmp_dir = "tmp"
+
+[build]
+  args_bin = []
+  bin = "./tmp/main"
+  cmd = "go build -o ./tmp/main ./cmd/server"
+  delay = 1000
+  exclude_dir = ["assets", "tmp", "vendor", "testdata", "docs", ".github", "auths", "examples"]
+  exclude_file = []
+  exclude_regex = ["_test.go"]
+  exclude_unchanged = false
+  follow_symlink = false
+  full_bin = ""
+  include_dir = []
+  include_ext = ["go", "tpl", "tmpl", "html", "yaml", "yml"]
+  include_file = []
+  kill_delay = "0s"
+  log = "build-errors.log"
+  poll = false
+  poll_interval = 0
+  post_cmd = []
+  pre_cmd = []
+  rerun = false
+  rerun_delay = 500
+  send_interrupt = false
+  stop_on_error = false
+
+[color]
+  app = ""
+  build = "yellow"
+  main = "magenta"
+  runner = "green"
+  watcher = "cyan"
+
+[log]
+  main_only = false
+  time = false
+
+[misc]
+  clean_on_exit = false
+
+[screen]
+  clear_on_rebuild = false
+  keep_scroll = true
\ No newline at end of file
diff --git a/.gitignore b/.gitignore
index bab49132..e45319bb 100644
--- a/.gitignore
+++ b/.gitignore
@@ -13,6 +13,8 @@ logs/*
 conv/*
 temp/*
 refs/*
+tmp/*
+build-errors.log
 
 # Storage backends
 pgstore/*
diff --git a/go.mod b/go.mod
index 73b40e9b..78451bc4 100644
--- a/go.mod
+++ b/go.mod
@@ -5,6 +5,7 @@ go 1.24.0
 require (
 	github.com/andybalholm/brotli v1.0.6
 	github.com/fsnotify/fsnotify v1.9.0
+	github.com/fxamacker/cbor/v2 v2.9.0
 	github.com/gin-gonic/gin v1.10.1
 	github.com/go-git/go-git/v6 v6.0.0-20251009132922-75a182125145
 	github.com/google/uuid v1.6.0
@@ -13,8 +14,8 @@ require (
 	github.com/joho/godotenv v1.5.1
 	github.com/klauspost/compress v1.17.4
 	github.com/minio/minio-go/v7 v7.0.66
-	github.com/refraction-networking/utls v1.8.2
 	github.com/pkg/browser v0.0.0-20240102092130-5ac0b6a4141c
+	github.com/refraction-networking/utls v1.8.2
 	github.com/sirupsen/logrus v1.9.3
 	github.com/tidwall/gjson v1.18.0
 	github.com/tidwall/sjson v1.2.5
@@ -41,7 +42,6 @@ require (
 	github.com/dlclark/regexp2 v1.11.5 // indirect
 	github.com/dustin/go-humanize v1.0.1 // indirect
 	github.com/emirpasic/gods v1.18.1 // indirect
-	github.com/fxamacker/cbor/v2 v2.9.0 // indirect
 	github.com/gabriel-vasile/mimetype v1.4.3 // indirect
 	github.com/gin-contrib/sse v0.1.0 // indirect
 	github.com/go-git/gcfg/v2 v2.0.2 // indirect
diff --git a/internal/api/handlers/management/config_lists.go b/internal/api/handlers/management/config_lists.go
index 4e0e0284..15ec3a24 100644
--- a/internal/api/handlers/management/config_lists.go
+++ b/internal/api/handlers/management/config_lists.go
@@ -754,18 +754,22 @@ func (h *Handler) PatchOAuthModelAlias(c *gin.Context) {
 	normalizedMap := sanitizedOAuthModelAlias(map[string][]config.OAuthModelAlias{channel: body.Aliases})
 	normalized := normalizedMap[channel]
 	if len(normalized) == 0 {
+		// Only delete if channel exists, otherwise just create empty entry
+		if h.cfg.OAuthModelAlias != nil {
+			if _, ok := h.cfg.OAuthModelAlias[channel]; ok {
+				delete(h.cfg.OAuthModelAlias, channel)
+				if len(h.cfg.OAuthModelAlias) == 0 {
+					h.cfg.OAuthModelAlias = nil
+				}
+				h.persist(c)
+				return
+			}
+		}
+		// Create new channel with empty aliases
 		if h.cfg.OAuthModelAlias == nil {
-			c.JSON(404, gin.H{"error": "channel not found"})
-			return
-		}
-		if _, ok := h.cfg.OAuthModelAlias[channel]; !ok {
-			c.JSON(404, gin.H{"error": "channel not found"})
-			return
-		}
-		delete(h.cfg.OAuthModelAlias, channel)
-		if len(h.cfg.OAuthModelAlias) == 0 {
-			h.cfg.OAuthModelAlias = nil
+			h.cfg.OAuthModelAlias = make(map[string][]config.OAuthModelAlias)
 		}
+		h.cfg.OAuthModelAlias[channel] = []config.OAuthModelAlias{}
 		h.persist(c)
 		return
 	}
diff --git a/internal/registry/model_definitions.go b/internal/registry/model_definitions.go
index 7bf4aae2..954ecc7f 100644
--- a/internal/registry/model_definitions.go
+++ b/internal/registry/model_definitions.go
@@ -19,6 +19,7 @@ import (
 //   - codex
 //   - qwen
 //   - iflow
+//   - github-copilot
 //   - antigravity (returns static overrides only)
 func GetStaticModelDefinitionsByChannel(channel string) []*ModelInfo {
 	key := strings.ToLower(strings.TrimSpace(channel))
@@ -39,6 +40,8 @@ func GetStaticModelDefinitionsByChannel(channel string) []*ModelInfo {
 		return GetQwenModels()
 	case "iflow":
 		return GetIFlowModels()
+	case "github-copilot":
+		return GetGitHubCopilotModels()
 	case "antigravity":
 		cfg := GetAntigravityModelConfig()
 		if len(cfg) == 0 {