addResource now auto-places deposited resources onto the structure
grid (first-fit scan, fills existing stacks first, falls back to
flat-list behavior for non-grid structures).
New server actions:
- placeResourceOnGrid — explicit placement at x,y,rotated
- moveGridItem — move item to new position with optional rotation
- mergeGridStacks — merge two stacks of the same resource
- rotateGridItem — toggle rotation in-place
- removeGridItem — delete a grid entry
- splitGridStack — split a stack into two at an empty spot
- autoArrangeGrid — re-pack all items into grid
- Added Google Fonts import for `Geist` and `Geist Mono` to `styles.css`.
- Aligned, cleaned styling variables and properties consistently.
- Updated `seedUsers.ts` to include a developer role.
- Introduced `bun.lock` file for dependency management.
