hermes - 💡(How to fix) Fix Dashboard terminal displays text incorrectly - character rendering corruption [1 pull requests]

Description

The dashboard's embedded terminal (TUI via PTY bridge) is displaying certain text incorrectly. When listing todos, the text 'FcDataBoss' appears as 'FcDataBpsst' in the terminal output, even though the underlying file content is correct.

Steps to Reproduce

1. Open the dashboard at hermes dashboard → /chat
2. Execute list todos command
3. Observe the completed todo item text

Expected Behavior

Text should render exactly as stored in the file: - [x] Generate FcDataBoss for Gina for I think any 2 active meters for all time

Actual Behavior

Text displays with character corruption: - [x] Generate FcDataBpsst for Gina for I think any 2 active meters for all time

Verification

• File content verified with grep and read_file - shows correct text
• Opening file in Obsidian or text editor shows correct text
• Issue is isolated to dashboard terminal display only

Environment

• macOS 26.3
• Dashboard embedded TUI via PTY bridge (hermes_cli/pty_bridge.py)
• xterm.js terminal emulator with WebGL renderer
• Addons: @xterm/addon-fit, @xterm/addon-unicode11

Possible Causes

1. Font rendering issue in xterm.js with specific character combinations
2. Unicode/encoding problem in the PTY → WebSocket → browser pipeline
3. xterm.js unicode11 addon configuration issue
4. Character width calculation problem in the WebGL renderer

Related Code

• hermes_cli/pty_bridge.py - PTY bridge
• hermes_cli/web_server.py - WebSocket endpoint /api/pty
• web/src/pages/ChatPage.tsx - Terminal component initialization