diff --git a/app/Services/Ticket/RiskPoolService.php b/app/Services/Ticket/RiskPoolService.php
index b68713b..50e5c6a 100644
--- a/app/Services/Ticket/RiskPoolService.php
+++ b/app/Services/Ticket/RiskPoolService.php
@@ -151,9 +151,24 @@ final class RiskPoolService
                 $pool = $this->firstOrMakePool($drawId, $number4d);
                 $key = $this->redisPoolKey($drawId, $number4d);
 
-                Redis::eval($this->initLua(), 1, $key, (int) $pool->total_cap_amount, (int) $pool->locked_amount, (int) $pool->version);
+                Redis::eval(
+                    $this->initLua(),
+                    1,
+                    $key,
+                    (int) $pool->total_cap_amount,
+                    (int) $pool->locked_amount,
+                    (int) $pool->version,
+                    $this->redisPoolTtlSeconds(),
+                );
 
-                $result = $this->normalizeLuaResult(Redis::eval($this->acquireLua(), 1, $key, $amount, (int) $pool->version));
+                $result = $this->normalizeLuaResult(Redis::eval(
+                    $this->acquireLua(),
+                    1,
+                    $key,
+                    $amount,
+                    (int) $pool->version,
+                    $this->redisPoolTtlSeconds(),
+                ));
                 if (($result['code'] ?? null) !== 'OK') {
                     throw new TicketOperationException('risk_sold_out', ErrorCode::RiskPoolSoldOut->value);
                 }
@@ -211,6 +226,7 @@ final class RiskPoolService
             $locked,
             $remaining,
             (int) $pool->version,
+            $this->redisPoolTtlSeconds(),
         );
     }
 
@@ -228,11 +244,17 @@ final class RiskPoolService
         return "risk_pool:draw:{$drawId}:number:{$number4d}";
     }
 
+    private function redisPoolTtlSeconds(): int
+    {
+        return max(60, (int) config('lottery.risk_pool.redis_ttl_seconds', 86400));
+    }
+
     private function initLua(): string
     {
         return <<<'LUA'
 if redis.call('EXISTS', KEYS[1]) == 0 then
     redis.call('HMSET', KEYS[1], 'total', ARGV[1], 'locked', ARGV[2], 'remaining', ARGV[1] - ARGV[2], 'version', ARGV[3])
+    redis.call('EXPIRE', KEYS[1], tonumber(ARGV[4]))
 end
 return 1
 LUA;
@@ -242,6 +264,7 @@ LUA;
     {
         return <<<'LUA'
 redis.call('HMSET', KEYS[1], 'total', ARGV[1], 'locked', ARGV[2], 'remaining', ARGV[3], 'version', ARGV[4])
+redis.call('EXPIRE', KEYS[1], tonumber(ARGV[5]))
 return 1
 LUA;
     }
@@ -268,6 +291,7 @@ end
 local locked = redis.call('HINCRBY', KEYS[1], 'locked', amount)
 remaining = redis.call('HINCRBY', KEYS[1], 'remaining', -amount)
 version = redis.call('HINCRBY', KEYS[1], 'version', 1)
+redis.call('EXPIRE', KEYS[1], tonumber(ARGV[3]))
 return {'OK', remaining, locked, version}
 LUA;
     }
@@ -283,6 +307,7 @@ if locked < releaseAmount then
 end
 redis.call('HINCRBY', KEYS[1], 'locked', -releaseAmount)
 redis.call('HINCRBY', KEYS[1], 'remaining', releaseAmount)
+redis.call('EXPIRE', KEYS[1], tonumber(ARGV[2]))
 return releaseAmount
 LUA;
     }
@@ -336,7 +361,13 @@ LUA;
     private function releaseRedisLocks(int $drawId, array $locks): void
     {
         foreach ($locks as $lock) {
-            Redis::eval($this->releaseLua(), 1, $this->redisPoolKey($drawId, $lock['number_4d']), (int) $lock['amount']);
+            Redis::eval(
+                $this->releaseLua(),
+                1,
+                $this->redisPoolKey($drawId, $lock['number_4d']),
+                (int) $lock['amount'],
+                $this->redisPoolTtlSeconds(),
+            );
         }
     }
 
diff --git a/app/Support/ApiResponse.php b/app/Support/ApiResponse.php
index 171306f..3e1e097 100644
--- a/app/Support/ApiResponse.php
+++ b/app/Support/ApiResponse.php
@@ -14,13 +14,15 @@ use Illuminate\Http\Request;
  */
 final class ApiResponse
 {
+    private const JSON_FLAGS = JSON_UNESCAPED_UNICODE | JSON_UNESCAPED_SLASHES;
+
     public static function success(mixed $data = null, ?string $msg = null, int $code = 0, ?Request $request = null): JsonResponse
     {
         return response()->json([
             'code' => $code,
             'msg' => $msg ?? ApiMessage::successMessage($request),
             'data' => $data,
-        ]);
+        ], 200, [], self::JSON_FLAGS);
     }
 
     public static function error(string $msg, int $code, mixed $data = null, int $httpStatus = 400): JsonResponse
@@ -29,6 +31,6 @@ final class ApiResponse
             'code' => $code,
             'msg' => $msg,
             'data' => $data,
-        ], $httpStatus);
+        ], $httpStatus, [], self::JSON_FLAGS);
     }
 }
diff --git a/bootstrap/app.php b/bootstrap/app.php
index b4bf860..0a57c72 100644
--- a/bootstrap/app.php
+++ b/bootstrap/app.php
@@ -13,6 +13,7 @@ use App\Lottery\ErrorCode;
 use App\Support\ApiResponse;
 use App\Support\ApiValidationErrors;
 use Illuminate\Http\Request;
+use Illuminate\Support\Str;
 use App\Support\LotteryLocale;
 use Illuminate\Foundation\Application;
 use App\Http\Middleware\EnsureAdminApi;
@@ -174,13 +175,40 @@ return Application::configure(basePath: dirname(__DIR__))
                 return null;
             }
 
-            $showDetails = (bool) config('app.debug');
+            $showDetails = (bool) config('app.debug')
+                || (bool) env('API_ERROR_DETAILS', false)
+                || app()->environment(['local', 'testing']);
+            $errorId = (string) Str::uuid();
+            report($e);
+
             $msg = $showDetails ? $e->getMessage() : trans('api.server_error', [], $locale($request));
+            $details = [
+                'error_id' => $errorId,
+            ];
+
+            if ($showDetails) {
+                $details['exception'] = $e::class;
+                $details['message'] = $e->getMessage();
+                $details['file'] = $e->getFile();
+                $details['line'] = $e->getLine();
+                $details['trace'] = collect($e->getTrace())
+                    ->take(10)
+                    ->map(static function (array $frame): array {
+                        return [
+                            'file' => $frame['file'] ?? null,
+                            'line' => $frame['line'] ?? null,
+                            'class' => $frame['class'] ?? null,
+                            'function' => $frame['function'] ?? null,
+                        ];
+                    })
+                    ->values()
+                    ->all();
+            }
 
             return ApiResponse::error(
                 $msg !== '' ? $msg : trans('api.server_error', [], $locale($request)),
                 ErrorCode::InternalError->value,
-                $showDetails ? ['exception' => $e::class] : null,
+                $details,
                 500,
             );
         });
diff --git a/config/lottery.php b/config/lottery.php
index 3db23cc..d881926 100644
--- a/config/lottery.php
+++ b/config/lottery.php
@@ -26,6 +26,8 @@ return [
     'risk_pool' => [
         /** 生产默认使用 Redis Lua 做号码赔付池原子扣减；testing 自动回退 DB，便于无 Redis 跑测试。 */
         'use_redis_lua' => filter_var(env('LOTTERY_RISK_POOL_USE_REDIS_LUA', true), FILTER_VALIDATE_BOOLEAN),
+        /** 风险池 Redis 快照键 TTL（秒）；每次初始化/扣减/释放/同步都会续期。 */
+        'redis_ttl_seconds' => max(60, (int) env('LOTTERY_RISK_POOL_REDIS_TTL_SECONDS', 86400)),
     ],
 
     'main_site' => [
diff --git a/tests/Feature/ApiExceptionResponseTest.php b/tests/Feature/ApiExceptionResponseTest.php
new file mode 100644
index 0000000..5d122ec
--- /dev/null
+++ b/tests/Feature/ApiExceptionResponseTest.php
@@ -0,0 +1,25 @@
+<?php
+
+use App\Lottery\ErrorCode;
+use Illuminate\Support\Facades\Route;
+
+test('api internal exception response includes structured details in testing', function (): void {
+    Route::get('/api/v1/test-error-detail', function (): void {
+        throw new RuntimeException('测试异常明细');
+    });
+
+    $response = $this->getJson('/api/v1/test-error-detail');
+
+    $response
+        ->assertStatus(500)
+        ->assertJsonPath('code', ErrorCode::InternalError->value)
+        ->assertJsonPath('msg', '测试异常明细')
+        ->assertJsonPath('data.exception', RuntimeException::class)
+        ->assertJsonPath('data.message', '测试异常明细');
+
+    expect($response->json('data.error_id'))->not->toBeEmpty()
+        ->and($response->json('data.file'))->toContain('ApiExceptionResponseTest.php')
+        ->and($response->json('data.line'))->toBeInt()
+        ->and($response->getContent())->toContain('测试异常明细')
+        ->and($response->getContent())->not->toContain('\u6d4b\u8bd5\u5f02\u5e38\u660e\u7ec6');
+});
diff --git a/tests/Feature/RiskPoolLuaScriptTest.php b/tests/Feature/RiskPoolLuaScriptTest.php
index fd7cb62..ee5a63a 100644
--- a/tests/Feature/RiskPoolLuaScriptTest.php
+++ b/tests/Feature/RiskPoolLuaScriptTest.php
@@ -19,5 +19,25 @@ test('risk pool lua acquire script returns structured status and pool counters',
         ->and($lua)->toContain('INSUFFICIENT_CAP')
         ->and($lua)->toContain('remaining')
         ->and($lua)->toContain('locked')
-        ->and($lua)->toContain('version');
+        ->and($lua)->toContain('version')
+        ->and($lua)->toContain("redis.call('EXPIRE', KEYS[1], tonumber(ARGV[3]))");
+});
+
+test('risk pool lua init overwrite and release scripts refresh redis ttl', function (): void {
+    $service = app(RiskPoolService::class);
+
+    $initMethod = new ReflectionMethod($service, 'initLua');
+    $initMethod->setAccessible(true);
+    $overwriteMethod = new ReflectionMethod($service, 'overwriteStateLua');
+    $overwriteMethod->setAccessible(true);
+    $releaseMethod = new ReflectionMethod($service, 'releaseLua');
+    $releaseMethod->setAccessible(true);
+
+    $initLua = (string) $initMethod->invoke($service);
+    $overwriteLua = (string) $overwriteMethod->invoke($service);
+    $releaseLua = (string) $releaseMethod->invoke($service);
+
+    expect($initLua)->toContain("redis.call('EXPIRE', KEYS[1], tonumber(ARGV[4]))")
+        ->and($overwriteLua)->toContain("redis.call('EXPIRE', KEYS[1], tonumber(ARGV[5]))")
+        ->and($releaseLua)->toContain("redis.call('EXPIRE', KEYS[1], tonumber(ARGV[2]))");
 });