0.7.1 - F keys to control the Agents!

• The F-row answers. A lane is four keys: any of them brings its agent forward, and while the lane is Waiting the three after the first are Up, Down and Enter - the Stream Deck's rule, on the keyboard, sent only into a terminal that verifiably has the keyboard. The 4 × 3 and 6 × 2 layouts are gone: the keyboard is always three lanes of four. The lane count (3-6) stays, for agents beyond the keyboard; their cards say "no keys".
• Devices, each with a tick. The Keyboard panel is now Devices: every device on its own line, and unticking one leaves it alone - plugged in, found, not driven. The Keychron's own lighting comes back, the deck goes to its logo, iCUE is let go. Brightness and colour balance are ☀ and 🎨, and the folded header names the devices instead of saying "keyboard connected".
• Deck ink fades with the key. The label on a pulsing key no longer flips between black and white. The ink is chosen for the lane from its glow and its full colour, and fades between the two only when they disagree. No shadow.
• An empty lane says what it is for. On the deck's first key: "next agent here" on the lowest free lane, "free" on the rest, or the lane's name if you gave it one.
• Smaller: the deck's line in Settings reads "Model: 3 lanes of 5 keys"; the Lanes caption's arrows now render; a connected keyboard's line is just its model.

Upgrade: unzip, run once, delete the folder. Nothing to restart - hooks and the status line are unchanged since 0.7.0. An existing settings file loads as it is; a 4- or 6-lane file keeps its count.