fix(terminal): support Cmd+Left/Right navigation on macOS

[thisisharsh7]

fixes #1031

[vercel]

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[greptile-apps]

Greptile Summary

Adds support for Cmd+Left and Cmd+Right keyboard shortcuts on macOS to navigate to the beginning and end of a line in the terminal. The implementation maps these shortcuts to Ctrl+A (\x01) and Ctrl+E (\x05) respectively, which are standard terminal control sequences for line navigation.

• Maps Cmd+Left to Ctrl+A (move to beginning of line)
• Maps Cmd+Right to Ctrl+E (move to end of line)
• Only active on macOS (IS_MAC_PLATFORM)
• Requires only the Meta key (Cmd) without Ctrl, Shift, or Alt modifiers
• Prevents default browser behavior and stops event propagation
• Follows the same pattern as existing keybindings (Shift+Enter, copy/paste)

Confidence Score: 5/5

• Safe to merge - small, focused change with proper platform checks and event handling
• The implementation is straightforward, follows existing patterns in the codebase, and correctly implements platform-specific behavior. The change is well-scoped (19 lines), uses proper event prevention, and maps to standard terminal control sequences.
• No files require special attention

Important Files Changed

Filename	Overview
src/renderer/terminal/TerminalSessionManager.ts	Adds Cmd+Left/Right to Ctrl+A/E mapping for macOS terminal line navigation

_{Last reviewed commit: 5f33c9d}