main: 增强 Agent Run 调度可靠性与幂等性

- 默认切换 AgentProvider 为 HttpAgentProvider，增强网络请求的容错和重试机制
- 优化 Run 逻辑，支持多场景去重与并发保护
- 添加 Redis 发布失败的日志记录以提升问题排查效率
- 扩展 OpenAPI 规范，新增 Error 和 Run 状态相关模型
- 增强测试覆盖，验证调度策略和重复请求的幂等性
- 增加数据库索引以优化查询性能
- 更新所有相关文档和配置文件

app/Services/Agent/HttpAgentProvider.php

@@ -2,15 +2,24 @@
 
 namespace App\Services\Agent;
 
+use Illuminate\Http\Client\ConnectionException;
 use Illuminate\Support\Facades\Http;
 
 class HttpAgentProvider implements AgentProviderInterface
 {
     protected string $endpoint;
+    protected int $timeoutSeconds;
+    protected int $connectTimeoutSeconds;
+    protected int $retryTimes;
+    protected int $retryBackoffMs;
 
     public function __construct(?string $endpoint = null)
     {
-        $this->endpoint = $endpoint ?? config('services.agent_provider.endpoint', '');
+        $this->endpoint = $endpoint ?? config('agent.provider.endpoint', '');
+        $this->timeoutSeconds = (int) config('agent.provider.timeout_seconds', 30);
+        $this->connectTimeoutSeconds = (int) config('agent.provider.connect_timeout_seconds', 5);
+        $this->retryTimes = (int) config('agent.provider.retry_times', 1);
+        $this->retryBackoffMs = (int) config('agent.provider.retry_backoff_ms', 500);
     }
 
     /**
@@ -29,14 +38,69 @@ class HttpAgentProvider implements AgentProviderInterface
             'options' => $options,
         ];
 
-        $response = Http::post($this->endpoint, $payload);
+        $attempts = $this->retryTimes + 1;
+        $lastException = null;
+        $lastResponseBody = null;
+        $lastStatus = null;
 
-        if (! $response->successful()) {
-            throw new \RuntimeException('Agent provider failed: '.$response->body());
+        for ($attempt = 1; $attempt <= $attempts; $attempt++) {
+            try {
+                $response = Http::connectTimeout($this->connectTimeoutSeconds)
+                    ->timeout($this->timeoutSeconds)
+                    ->post($this->endpoint, $payload);
+
+                $lastStatus = $response->status();
+                $lastResponseBody = $response->body();
+
+                if ($response->successful()) {
+                    $data = $response->json();
+
+                    return is_string($data) ? $data : ($data['content'] ?? '');
+                }
+
+                $retryable = $lastStatus === 429 || $lastStatus >= 500;
+                if ($retryable && $attempt < $attempts) {
+                    usleep($this->retryBackoffMs * 1000);
+                    continue;
+                }
+
+                throw new ProviderException(
+                    'HTTP_ERROR',
+                    'Agent provider failed',
+                    $retryable,
+                    $lastStatus,
+                    $lastResponseBody
+                );
+            } catch (ConnectionException $exception) {
+                $lastException = $exception;
+                if ($attempt < $attempts) {
+                    usleep($this->retryBackoffMs * 1000);
+                    continue;
+                }
+            } catch (\Throwable $exception) {
+                $lastException = $exception;
+                break;
+            }
         }
 
-        $data = $response->json();
+        $rawMessage = $lastException ? $lastException->getMessage() : $lastResponseBody;
 
-        return is_string($data) ? $data : ($data['content'] ?? '');
+        if ($lastException instanceof ConnectionException) {
+            throw new ProviderException(
+                'CONNECTION_FAILED',
+                'Agent provider connection failed',
+                true,
+                $lastStatus,
+                $rawMessage
+            );
+        }
+
+        throw new ProviderException(
+            'UNKNOWN_ERROR',
+            'Agent provider error',
+            false,
+            $lastStatus,
+            $rawMessage
+        );
     }
 }