fix: remove gh_token variable, use Coder External Auth instead

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

Author: noeljackson

.github/workflows/push-template.yaml

@@ -19,5 +19,4 @@ jobs:
           CODER_URL: https://coder.noel.codespace.sh
           CODER_SESSION_TOKEN: ${{ secrets.CODER_TOKEN }}
         run: |
-          coder templates push example --directory coder --yes \
-            --variable gh_token="${{ secrets.GH_TOKEN }}"
+          coder templates push example --directory coder --yes

coder/main.tf

@@ -10,19 +10,4 @@ module "workspace" {
   services = {
     app = { port = 5173, public = true, healthcheck = true, healthcheck_path = "/healthz" }
   }
-
-  extra_env = {
-    GH_TOKEN = var.gh_token
-  }
-
-  git_setup_hook = <<-EOF
-    echo "https://oauth2:${var.gh_token}@github.com" >> ~/.git-credentials
-  EOF
-}
-
-variable "gh_token" {
-  description = "GitHub token for gh CLI and git push"
-  type        = string
-  sensitive   = true
-  default     = ""
 }