chore: 初始化 eightbf-analysis-go（对齐 Java 会商作业服务）

Go 实现 /api/v1/analysis 契约、Demo/Live Worker、DeerFlow SSE；含设计文档与冒烟脚本。

Co-authored-by: Cursor <cursoragent@cursor.com>

internal/worker/live_worker.go

@@ -0,0 +1,64 @@
+package worker
+
+import (
+	"log"
+	"sync/atomic"
+	"time"
+
+	"git.gozeros.com/wsk/eightbf-analysis-go/internal/domain"
+	"git.gozeros.com/wsk/eightbf-analysis-go/internal/repo"
+)
+
+// LiveWorker 定时扫 queued，最多并发 2 场交给 LiveChainRunner。
+type LiveWorker struct {
+	Repo     *repo.JobRepo
+	Runner   *LiveChainRunner
+	PollEvery time.Duration
+	inflight int32
+}
+
+func (w *LiveWorker) Start() {
+	if w.PollEvery <= 0 {
+		w.PollEvery = time.Second
+	}
+	go func() {
+		t := time.NewTicker(w.PollEvery)
+		defer t.Stop()
+		for range t.C {
+			w.poll()
+		}
+	}()
+}
+
+func (w *LiveWorker) poll() {
+	if atomic.LoadInt32(&w.inflight) >= 2 {
+		return
+	}
+	queued, err := w.Repo.FindQueuedJobs()
+	if err != nil {
+		log.Printf("LiveWorker 扫队列失败: %v", err)
+		return
+	}
+	for _, job := range queued {
+		if atomic.LoadInt32(&w.inflight) >= 2 {
+			break
+		}
+		job.Status = domain.StatusRunning
+		job.Phase = "claimed"
+		if err := w.Repo.UpdateProgress(job); err != nil {
+			log.Printf("LiveWorker 占坑失败 jobId=%s: %v", job.ID, err)
+			continue
+		}
+		atomic.AddInt32(&w.inflight, 1)
+		jobID := job.ID
+		go func() {
+			defer atomic.AddInt32(&w.inflight, -1)
+			fresh, err := w.Repo.FindByID(jobID)
+			if err != nil || fresh == nil {
+				return
+			}
+			log.Printf("开始真模型会商 jobId=%s", jobID)
+			w.Runner.Run(fresh)
+		}()
+	}
+}