feat: add JailService and bust-out config keys

Add JailService with bustOut(), sendToJail(), releaseFromJail(), and
calculateBustOutChance() methods. Add two config keys (bust_out_stat_multiplier
and bust_out_max_chance) to the jail config block.

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

app/Services/Game/JailService.php

@@ -0,0 +1,89 @@
+<?php
+
+namespace App\Services\Game;
+
+use App\Models\Character;
+
+class JailService
+{
+    /**
+     * Calculate bust-out success chance for a character (0.0 to 1.0).
+     */
+    public function calculateBustOutChance(Character $character): float
+    {
+        $base       = config('game.jail.breakout_chance', 0.05);
+        $multiplier = config('game.jail.bust_out_stat_multiplier', 0.003);
+        $cap        = config('game.jail.bust_out_max_chance', 0.80);
+
+        return min($cap, $base + ($character->dexterity + $character->speed) * $multiplier);
+    }
+
+    /**
+     * Attempt to bust out of jail.
+     *
+     * Deducts breakout_cost cash regardless of outcome.
+     * On success: releases character immediately.
+     * On failure: multiplies remaining sentence by sentence_multiplier.
+     *
+     * @return array{success: bool, message: string}
+     */
+    public function bustOut(Character $character): array
+    {
+        $cost = config('game.jail.breakout_cost', 1000);
+
+        if ($character->money < $cost) {
+            return [
+                'success' => false,
+                'message' => 'You need $' . number_format($cost) . ' to attempt a bust-out.',
+            ];
+        }
+
+        $character->money -= $cost;
+        $successRate = $this->calculateBustOutChance($character);
+        $roll = random_int(0, 9999) / 10000;
+
+        if ($roll <= $successRate) {
+            $this->releaseFromJail($character);
+            $character->save();
+
+            return [
+                'success' => true,
+                'message' => "You escaped! You're free.",
+            ];
+        }
+
+        // Failure: extend sentence
+        $multiplier = config('game.jail.sentence_multiplier', 1.5);
+        $remaining  = max(0, $character->in_jail_until->diffInSeconds(now()));
+        $extended   = (int) ceil($remaining * $multiplier);
+
+        $character->in_jail_until = now()->addSeconds($extended);
+        $character->save();
+
+        $newReleaseTime = $character->in_jail_until->diffForHumans();
+
+        return [
+            'success' => false,
+            'message' => "Bust failed — your sentence was extended to {$newReleaseTime}.",
+        ];
+    }
+
+    /**
+     * Send a character to jail for the given number of seconds.
+     */
+    public function sendToJail(Character $character, int $seconds): void
+    {
+        $character->status       = 'in_jail';
+        $character->in_jail_until = now()->addSeconds($seconds);
+        $character->save();
+    }
+
+    /**
+     * Release a character from jail immediately.
+     */
+    public function releaseFromJail(Character $character): void
+    {
+        $character->status        = 'active';
+        $character->in_jail_until = null;
+    }
+}

config/game.php

@@ -79,10 +79,12 @@ return [
 
     // Jail system configuration
     'jail' => [
-        'sentence_length' => 3600,     // 1 hour base sentence
+        'sentence_length'          => 3600,
-        'breakout_chance' => 0.05,      // 5% chance to break out per attempt
+        'breakout_chance'          => 0.05,
-        'breakout_cost' => 1000,        // Cost to attempt breakout
+        'breakout_cost'            => 1000,
-        'sentence_multiplier' => 1.5,   // Sentence increases by 50% for repeat offenses
+        'sentence_multiplier'      => 1.5,
+        'bust_out_stat_multiplier' => 0.003,  // per combined dex+speed point
+        'bust_out_max_chance'      => 0.80,   // cap at 80%
     ],
 
     // Economy configuration