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, 20 insertions, 14 deletions

diff --git a/docs/TESTING.md b/docs/TESTING.md
index f42b84a..32fc628 100644
--- a/docs/TESTING.md
+++ b/docs/TESTING.md
@@ -125,21 +125,27 @@ Windows 10 before approving the look.
 1. `cargo run -p zagan-bet-gui` at 1440x900, then at 1920x1080. The header
    keeps its right margin at both sizes and shows ONLINE, host, ping, account
    and balance; the table is centred and the sidebar is full height.
-2. The felt shows 0, the 3x12 numbers, dozens, columns and the six outside
-   cells. Chips sit on their targets: a straight in the cell, a corner on the
-   lattice crossing, an outside bet in its box.
-3. Click a pocket: a chip of the selected denomination appears and the slip
-   gains a row. Chips are 10/25/50/100; the selected one has a cyan ring.
-4. Arrow keys move the cursor. Over the numbers the cyan marker sits on the
-   cell or lattice point and the covered cells tint; leaving the table walks
-   dozens, columns and outside.
+2. The felt shows 0, the 3x12 numbers, dozens, columns (each a quarter of the
+   row) and the six outside cells. Chips sit on their targets: a straight in
+   the cell, a corner on the lattice crossing, an outside bet in its box.
+3. Hover a number: a translucent chip of the selected denomination appears.
+   In the inner half of a cell it is a straight (one cell tints); near an edge
+   it snaps to a split (two cells tint) and near a corner to a corner (four
+   cells tint). Hovering the dozens, columns and outside boxes moves the
+   preview there.
+4. Left click adds the chip where the preview is; right or middle click takes
+   one chip of that value back, dropping the row when it reaches zero. The
+   slip and total follow every change. C or CLEAR empties the slip.
 5. Space or SPIN animates the wheel for about 2.4 s and stops with the winning
-   pocket under the pointer. The winning cell gets a gold outline, RESULT names
-   the number and colour, and LAST gains a dot. SPIN is disabled during the
-   spin.
-6. Clear bets empties the slip and the total. Resize to 1100x720: the sidebar
-   scrolls, nothing overlaps the header, and the table keeps its aspect ratio.
-7. Compare the 1080p window against the approved reference screenshot.
+   pocket under the pointer. The winning cell gets a gold outline and LAST
+   gains a dot. RESULT names the number and colour, WON shows the amount paid
+   and the net for the round, and a losing spin says NO WIN. SPIN, CLEAR and
+   the chips are disabled during the spin.
+6. Placing a chip after a result starts the next round: the payout row goes
+   back to PLACE YOUR BETS while the wheel stays where it stopped. Resize to
+   1100x720: the sidebar scrolls, nothing overlaps the header, and the table
+   keeps its aspect ratio.
+7. Compare the 1080p window against the approved reference screenshots.
 
 ## Manual roulette checklist