Add backend launcher scripts and refresh cleanup utility

Introduce claude-glm and claude-tk wrappers with secure keychain token lookup and backend model defaults, and replace cleanup.sh with the updated cleanup script entrypoint.

Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>

claude-glm

@@ -0,0 +1,41 @@
+#!/usr/bin/env bash
+
+# claude-glm — Run Claude Code with GLM backend
+#
+# Usage:
+#   claude-glm [args...]
+#
+# Setup API key (reuse existing):
+#   macOS:
+#     security add-generic-password -a "$USER" -s GLM_API_KEY -w "YOUR_KEY"
+#   Linux:
+#     echo "YOUR_KEY" | secret-tool store --label "GLM API Key" service GLM_API_KEY
+
+KEY_NAME="GLM_API_KEY"
+
+get_token() {
+  if command -v security >/dev/null 2>&1; then
+    security find-generic-password -s "$KEY_NAME" -w 2>/dev/null && return
+  fi
+  if command -v secret-tool >/dev/null 2>&1; then
+    secret-tool lookup service "$KEY_NAME" 2>/dev/null && return
+  fi
+  return 1
+}
+
+TOKEN=$(get_token)
+
+if [ -z "$TOKEN" ]; then
+  echo "❌ Missing GLM token ($KEY_NAME)"
+  exit 1
+fi
+
+export ANTHROPIC_BASE_URL="https://api.z.ai/api/anthropic"
+export ANTHROPIC_AUTH_TOKEN="$TOKEN"
+export ANTHROPIC_DEFAULT_HAIKU_MODEL="glm-4.5-air"
+export ANTHROPIC_DEFAULT_SONNET_MODEL="glm-5.1"
+export ANTHROPIC_DEFAULT_OPUS_MODEL="glm-5.1"
+
+echo "→ Backend: GLM"
+
+exec claude "$@"