[Bug] Unknown slash command handling for absolute file paths

Bug Description
you can paste something that starts with a path like /Users/ you would get Unknown slash command: Users/

Environment Info

• Platform: darwin
• Terminal: Apple_Terminal
• Version: 1.0.112
• Feedback ID:

Errors

[{"error":"Error: Another process is currently installing an update\n    at KG1 (file:///Users/jonymusky/.nvm/versions/node/v22.18.0/lib/node_modules/@anthropic-ai/claude-code/cli.js:1635:1805)\n    at file:///Users/jonymusky/.nvm/versions/node/v22.18.0/lib/node_modules/@anthropic-ai/claude-code/cli.js:3614:5675\n    at process.processTicksAndRejections (node:internal/process/task_queues:105:5)","timestamp":"2025-09-25T19:50:21.195Z"},{"error":"Error: Another process is currently installing an update\n    at KG1 (file:///Users/jonymusky/.nvm/versions/node/v22.18.0/lib/node_modules/@anthropic-ai/claude-code/cli.js:1635:1805)\n    at file:///Users/jonymusky/.nvm/versions/node/v22.18.0/lib/node_modules/@anthropic-ai/claude-code/cli.js:3614:5675\n    at process.processTicksAndRejections (node:internal/process/task_queues:105:5)","timestamp":"2025-09-25T19:50:23.424Z"},{"error":"AxiosError: Request failed with status code 403\n    at DN (file:///Users/jonymusky/.nvm/versions/node/v22.18.0/lib/node_modules/@anthropic-ai/claude-code/cli.js:715:1077)\n    at Unzip.Q0 (file:///Users/jonymusky/.nvm/versions/node/v22.18.0/lib/node_modules/@anthropic-ai/claude-code/cli.js:716:9955)\n    at Unzip.emit (node:events:530:35)\n    at Unzip.emit (node:domain:489:12)\n    at endReadableNT (node:internal/streams/readable:1698:12)\n    at process.processTicksAndRejections (node:internal/process/task_queues:90:21)\n    at nB1.request (file:///Users/jonymusky/.nvm/versions/node/v22.18.0/lib/node_modules/@anthropic-ai/claude-code/cli.js:718:2088)\n    at process.processTicksAndRejections (node:internal/process/task_queues:105:5)\n    at async tt6 (file:///Users/jonymusky/.nvm/versions/node/v22.18.0/lib/node_modules/@anthropic-ai/claude-code/cli.js:1978:480)\n    at async Promise.all (index 0)\n    at async file:///Users/jonymusky/.nvm/versions/node/v22.18.0/lib/node_modules/@anthropic-ai/claude-code/cli.js:1964:6660","timestamp":"2025-09-25T20:00:46.419Z"}]

<img width="232" height="59" alt="Image" src="https://github.com/user-attachments/assets/f207ca22-6042-436a-91f6-dca4e13e52a5" />