fix(game): restore startup and multiball edge behavior

The interactive build inherited Macroquad's fixed zero random state, making
maximum-power launcher shots repeat across fresh runs. Seed the platform
generator from the startup clock before taking the program-global gameplay
seed. Require record 148's still-live contact before the effect-seven special
respawn and clear active multiball state on an ordinary ball drain, so a
released reserve ball cannot be recreated after both slots are lost.

Type-4 target and effect handlers now honor each record's predicted broadphase
before changing its entry latch. This preserves the latch while another
multiball slot is elsewhere, preventing repeated upper-left corridor scoring.
The regressions and regenerated browser artifact stay with the implementation.

Test Plan:
- `just test` -- passed (137 tests)
- `just clippy` -- passed
- `cargo build --profile production` -- passed
- `just web-build` -- passed
- `cargo +nightly fmt --check` -- passed
- `rumdl check --flavor commonmark CHANGELOG.md` -- passed
- `git diff --cached --check` -- passed

tdkpin-rs/src/app.rs

@@ -94,6 +94,13 @@ fn add_player_released() -> bool {
     ADD_PLAYER_KEYS.into_iter().any(is_key_released)
 }
 
+fn initial_game_random_seed() -> u32 {
+    // The original seeds RandSeed from the startup clock. Macroquad's random
+    // generator starts from a fixed zero state unless the application seeds it.
+    macroquad::rand::srand(macroquad::miniquad::date::now().to_bits());
+    macroquad::rand::rand()
+}
+
 fn visible_score_digits(mut value: u32) -> Vec<(u8, u8)> {
     let mut digits = Vec::with_capacity(8);
     for position in 0..8 {
@@ -236,7 +243,7 @@ impl App {
             screen: Screen::Loading,
             return_screen: Screen::Attract,
             game: None,
-            game_random_seed: macroquad::rand::rand(),
+            game_random_seed: initial_game_random_seed(),
             setting_row: 0,
             loading_started,
             loading_until: loading_started + 1.1,