Fix Apps Script integration with main server

- Add appscript to --tools CLI choices, tool_imports, and tool_icons
- Add script service to SERVICE_CONFIGS in service_decorator
- Add script scope imports and SCOPE_GROUPS mappings
- Fix variable shadowing in _get_script_project_impl

These changes complete the Apps Script integration by adding the
missing wiring in main.py and service_decorator.py that was needed
to make the feature functional.

auth/service_decorator.py

@@ -42,6 +42,10 @@ from auth.scopes import (
     TASKS_SCOPE,
     TASKS_READONLY_SCOPE,
     CUSTOM_SEARCH_SCOPE,
+    SCRIPT_PROJECTS_SCOPE,
+    SCRIPT_PROJECTS_READONLY_SCOPE,
+    SCRIPT_DEPLOYMENTS_SCOPE,
+    SCRIPT_DEPLOYMENTS_READONLY_SCOPE,
 )
 
 logger = logging.getLogger(__name__)
@@ -385,6 +389,7 @@ SERVICE_CONFIGS = {
     "slides": {"service": "slides", "version": "v1"},
     "tasks": {"service": "tasks", "version": "v1"},
     "customsearch": {"service": "customsearch", "version": "v1"},
+    "script": {"service": "script", "version": "v1"},
 }
 
 
@@ -425,6 +430,11 @@ SCOPE_GROUPS = {
     "tasks_read": TASKS_READONLY_SCOPE,
     # Custom Search scope
     "customsearch": CUSTOM_SEARCH_SCOPE,
+    # Apps Script scopes
+    "script_readonly": SCRIPT_PROJECTS_READONLY_SCOPE,
+    "script_projects": SCRIPT_PROJECTS_SCOPE,
+    "script_deployments": SCRIPT_DEPLOYMENTS_SCOPE,
+    "script_deployments_readonly": SCRIPT_DEPLOYMENTS_READONLY_SCOPE,
 }