Remove unused dependencies

Several dependencies in package.json are installed but never used in the codebase.

Unused Dependencies

• flowbite (4.0.1) - not imported anywhere
• flowbite-svelte (1.31.0) - not imported anywhere
• fast-glob (3.3.3) - not referenced in codebase
• @sveltejs/adapter-node (5.5.2) - static adapter is used instead
• vitest (4.0.18) - installed but no tests or config exist. Note: needed for planned testing tasks, do not remove