Release v0.1.5

• UI: Updated sidebar shortcuts so Cmd/Ctrl + H toggles the Session Sidebar, while Cmd/Ctrl + L now toggles the Git Sidebar. (@isomoes)
• Chat: Added Vim-style input mode controls with i to focus the chat input and Escape to blur it when no autocomplete menu is open. (@isomoes)
• Chat: Added Ctrl + C in the focused chat input to quickly stop an in-progress response. (@isomoes)
• Chat: Improved @ file mentions so selecting a file inserts a relative path label when available. (@isomoes)
• Sessions: Added Vim-style session switching with Ctrl + J and Ctrl + K, cycling by most recently updated sessions. (@isomoes)
• Command Palette: Added a Projects group so you can switch active projects directly from the palette. (@isomoes)
• Chat: Improved focus behavior after closing the agent selector so the chat input restores focus reliably. (@isomoes)