"@-reference Broken in Chat Interface"

Bug Description
I can no longer use the @ tag to reference files inline in the chat. it isn't recognized the same way other tags are like the "#" "/" etc. It's just treated as a standard character.

Environment Info

• Platform: macos
• Terminal: cursor
• Version: 1.0.18
• Feedback ID: 8397d815-96d8-4961-95b6-f97797c17e21

Errors

[{"error":"Error: Command failed: security find-generic-password -a $USER -w -s \"Claude Code\"\nsecurity: SecKeychainSearchCopyNext: The specified item could not be found in the keychain.\n\n    at genericNodeError (node:internal/errors:983:15)\n    at wrappedFn (node:internal/errors:537:14)\n    at checkExecSyncError (node:child_process:882:11)\n    at execSync (node:child_process:954:15)\n    at JZ (file:///Users/joeljanov/.nvm/versions/node/v22.14.0/lib/node_modules/@anthropic-ai/claude-code/cli.js:659:3921)\n    at file:///Users/joeljanov/.nvm/versions/node/v22.14.0/lib/node_modules/@anthropic-ai/claude-code/cli.js:582:11795\n    at Q (file:///Users/joeljanov/.nvm/versions/node/v22.14.0/lib/node_modules/@anthropic-ai/claude-code/cli.js:526:17190)\n    at aJ (file:///Users/joeljanov/.nvm/versions/node/v22.14.0/lib/node_modules/@anthropic-ai/claude-code/cli.js:582:10941)\n    at AS (file:///Users/joeljanov/.nvm/versions/node/v22.14.0/lib/node_modules/@anthropic-ai/claude-code/cli.js:582:10022)\n    at L6 (file:///Users/joeljanov/.nvm/versions/node/v22.14.0/lib/node_modules/@anthropic-ai/claude-code/cli.js:582:14134)","timestamp":"2025-06-11T12:26:00.510Z"},{"error":"RangeError [ERR_CHILD_PROCESS_STDIO_MAXBUFFER]: stdout maxBuffer length exceeded\n    at Socket.onChildStdout (node:child_process:481:14)\n    at Socket.emit (node:events:518:28)\n    at Socket.emit (node:domain:489:12)\n    at addChunk (node:internal/streams/readable:561:12)\n    at readableAddChunkPushByteMode (node:internal/streams/readable:512:3)\n    at Readable.push (node:internal/streams/readable:392:5)\n    at Pipe.onStreamRead (node:internal/stream_base_commons:189:23)","timestamp":"2025-06-11T12:26:02.565Z"},{"error":"RangeError [ERR_CHILD_PROCESS_STDIO_MAXBUFFER]: stdout maxBuffer length exceeded\n    at Socket.onChildStdout (node:child_process:481:14)\n    at Socket.emit (node:events:518:28)\n    at Socket.emit (node:domain:489:12)\n    at addChunk (node:internal/streams/readable:561:12)\n    at readableAddChunkPushByteMode (node:internal/streams/readable:512:3)\n    at Readable.push (node:internal/streams/readable:392:5)\n    at Pipe.onStreamRead (node:internal/stream_base_commons:189:23)","timestamp":"2025-06-11T12:46:05.283Z"}]