Describe the bug

Pasting data from multiple Excel cells into the Hermes Desktop composer
inserts literal tab characters (\t) instead of spaces. In the
contenteditable div these tabs render as uneven column gaps instead of
readable text.

Steps to reproduce

1. Open Hermes Desktop
2. In Excel, copy 3 cells in one row (e.g. FEERUM | 2026-06-05 | 17,95 fp5_bear3)
3. Paste (Ctrl+V) into the composer
4. Text appears with tab characters between values

Expected behavior

Tabs should be replaced with spaces so pasted data reads as a clean,
single line of text.

Root cause

apps/desktop/src/app/chat/composer/index.tsx lines 492-507:

const pastedText = event.clipboardData.getData('text').trim()  // Excel provides data with \t
// ...
document.execCommand('insertText', false, pastedText)  // inserts with tabs intact

Missing .replace(/\t/g, ' ') after .trim().

Fix

const pastedText = event.clipboardData.getData('text').trim()
                             .replace(/\t/g, ' ')


## Author

Code by **Austin Pickett** (pickett.austin@gmail.com).