v4.1.1: pointer-first betting and visible payouts in the GUI

The felt snaps the hover to the shared fine lattice: inner half of a cell is a straight, an edge a split, a crossing a corner. A translucent chip previews the target and the covered cells tint. Left click adds the selected chip, right or middle click takes one back through the new Bets::reduce; C or CLEAR empties the slip, and SPIN stays disabled with no chips.

The result now pays out: the wheel leaves the winning pocket under the pointer, the winning cell and pocket get a gold outline, and the sidebar reports the amount returned and the net for the round (NO WIN on a loss). Placing a chip after a result starts the next round without losing the wheel position.

The column row now spans the full width like a real table instead of hugging the left edge. Adds tests for lattice snapping, target naming and taking chips back.

1 files changed, 4 insertions, 0 deletions

diff --git a/AGENTS.md b/AGENTS.md
index c3b555d..6207d7a 100644
--- a/AGENTS.md
+++ b/AGENTS.md
@@ -73,6 +73,10 @@
   look; keep a style module and a reference screen. The palette is derived
   from the terminal's ANSI colours, and felt green is only ever the roulette
   table.
+- The GUI felt is pointer-first: the hover snaps to the shared fine lattice
+  (cell centre, edge, crossing), left click adds the chip and right or middle
+  click takes one back. The terminal keeps its arrow-key cursor; the GUI does
+  not paint it.
 
 ## Client TUI
 - `render_lines()` and `render()` must agree. If `render()` uses `\r\n`,