* chore: update task commands in mise.toml to use pnpm
* Replaced direct commands with pnpm run equivalents for consistency.
* Added new tasks for type checking and Svelte checks.
* Removed deprecated svelte-kit-sync task and adjusted dependencies accordingly.
* mroe
* chore: update mise.toml to add demo server task
* Removed the direct IMMICH_SERVER_URL setting from the environment section.
* Added a new task for starting the demo server with the IMMICH_SERVER_URL environment variable.
* Ensured consistency in task definitions.
