Kitchen Icon Remodel, Purchasing System, Counter Furniture

The five kitchen station icons were remodeled to actually look like their object (a fridge, a griddle with a sizzling patty, a cutting board with a knife, a service bell under a heat lamp, a sink with a faucet) after a direct check confirmed the earlier "graphics pass" had only polished each station's container, not the icon inside it. Built the game's first purchasing/placement system — previously only worker hiring had any cost mechanic — and used it to make a "Counter" a purchasable piece of furniture: buy it, click an empty tile to place it (Esc cancels, money isn't spent until placement actually lands), then click the placed counter to shop a small catalog of items for it (register, spice rack, napkin dispenser, potted plant). The sink and prep counter now render distinctly empty vs. actively in use.

Verified this session:

• 36/36 automated tests pass, including a new tests/furniture.test.js covering the purchase catalogs, Restaurant.removeStation, and resale-value rules.
• Live-verified the full buy → place → shop-for-an-item flow, and forced station occupancy on/off via the console to confirm both the prep counter's and sink's empty/in-use art.
• A UI testing gotcha was found and documented: the Inspector panel's innerHTML rebuilds every animation frame, so DOM refs into it can go stale between being found and clicked.