fix(game): restore deliberate plunger charging

Advance the recovered eleven-frame plunger over a full one-second hold and use that same frame selection for rendering. This makes a short tap visibly and physically weaker while a complete pull still clears the shooter lane.

Test Plan:
- cargo fmt --check
- cargo test
- cargo clippy --all-targets --all-features -- -D warnings
- git diff --check

tdkpin-rs/src/app.rs

@@ -438,8 +438,6 @@ impl App {
             }
         }
         if game.ball.in_launcher {
-            let frame = [0.05, 0.15, 0.25, 0.35, 0.45, 0.55, 0.65, 0.75, 0.85, 0.95]
-                .partition_point(|threshold| game.launcher_charge >= *threshold);
             draw_texture_ex(
                 &self.assets.plunger,
                 314.0,
@@ -447,7 +445,12 @@ impl App {
                 WHITE,
                 DrawTextureParams {
                     dest_size: Some(vec2(21.0, 18.0)),
-                    source: Some(Rect::new(frame as f32 * 21.0, 0.0, 20.0, 17.0)),
+                    source: Some(Rect::new(
+                        game.launcher_frame() as f32 * 21.0,
+                        0.0,
+                        20.0,
+                        17.0,
+                    )),
                     ..Default::default()
                 },
             );