[BUG] Shift+Space in Ghostty types literal "space" text instead of space character

Description

When pressing Shift+Space in the Claude Code input prompt, the literal text space is inserted instead of a space character.

Steps to Reproduce

1. Run claude in Ghostty terminal
2. In the input prompt, press Shift+Space
3. Observe: the word space is typed into the input
4. Expected: a space character should be inserted

Environment

• Claude Code version: 2.1.2 (regression confirmed)
• Working version: 2.0.70 (no issue)
• Terminal: Ghostty 1.2.3 (Linux, GTK 4.14.5)
• OS: Linux 6.8.0-90-generic

Additional Context

• Pressing Shift+Space in a regular shell (cat) outputs a normal space character, confirming Ghostty sends the correct input
• This appears to be a regression in how Claude Code handles the Kitty keyboard protocol
• When Claude Code enables enhanced keyboard mode, it seems to be displaying the key name instead of inserting the character for Shift+Space
• Occasionally see similar issues with escape sequences appearing in input (e.g., color codes appearing when typing certain words)

Workaround

Press Space without Shift (functionally equivalent for inserting a space).