feat(claude): add effort setting parity with model across stack (#353)

Co-authored-by: Xiaoyi <xiaoyizhang@microsoft.com>

web/src/lib/locales/en.ts

@@ -103,6 +103,7 @@ export default {
   'newSession.type.worktree.placeholder': 'feature-x (default 1228-xxxx)',
   'newSession.agent': 'Agent',
   'newSession.model': 'Model',
+  'newSession.effort': 'Effort',
   'newSession.model.optional': 'optional',
   'newSession.reasoningEffort': 'Reasoning effort',
   'newSession.yolo': 'YOLO mode',
@@ -274,6 +275,7 @@ export default {
   'misc.collaborationMode': 'Collaboration Mode',
   'misc.permissionMode': 'Permission Mode',
   'misc.model': 'Model',
+  'misc.effort': 'Effort',
   'misc.loading': 'Loading…',
   'misc.loadOlder': 'Load older',
   'misc.newMessage': '{n} new message{s}',