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, 6 insertions, 0 deletions

diff --git a/gui/src/theme.rs b/gui/src/theme.rs
index 9270aa6..0e5a475 100644
--- a/gui/src/theme.rs
+++ b/gui/src/theme.rs
@@ -120,6 +120,12 @@ pub fn money(amount: i64) -> String {
     format!("{} Kr", group_digits(amount))
 }
 
+/// Net amount with an explicit sign: `"+800 Kr"`, `"-90 Kr"`.
+pub fn signed_money(amount: i64) -> String {
+    let sign = if amount < 0 { "-" } else { "+" };
+    format!("{sign}{} Kr", group_digits(amount.abs()))
+}
+
 // ---------------------------------------------------------------------------
 // Installation
 // ---------------------------------------------------------------------------