fix: platform_silent记忆提取 + 群聊上下文整合 + 多QQ实例支持

- platform_silent模式接入Orchestrator记忆提取：被动观察群聊时提取值得记住的信息到对应命名空间
- post_chat后台思考注入平台观察：对话后思考也能看到群聊摘要
- QQ适配器：OneBot v11 self_id动态捕获、CQ图片URL提取、视觉+OCR并行处理
- Router解耦：ConfigName/PlatformName分离，支持多QQ实例独立连接
- 黑白名单功能：后端API + Ethend代理 + UI面板
- \n\n双换行断句：AI回复按双换行分割为多条消息按间隔发送
- @提及修复：bot自感知UID进行@检测
- 群聊上下文共享：channel-based userID避免记忆碎片化
- 消息日志显示处理后内容而非原始SSE数据
- platform-bridge Dockerfile + docker-compose.yml更新

Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>

backend/platform-bridge/internal/handler/blocklist_handler.go

@@ -0,0 +1,44 @@
+package handler
+
+import (
+	"encoding/json"
+	"net/http"
+
+	"git.yeij.top/AskaEth/Cyrene/platform-bridge/internal/config"
+)
+
+// BlocklistHandler exposes CRUD for blocklist settings.
+type BlocklistHandler struct {
+	store *config.BlocklistStore
+}
+
+func NewBlocklistHandler(store *config.BlocklistStore) *BlocklistHandler {
+	return &BlocklistHandler{store: store}
+}
+
+func (h *BlocklistHandler) RegisterRoutes(mux *http.ServeMux) {
+	mux.HandleFunc("/api/v1/settings/blocklist", h.handleBlocklist)
+}
+
+func (h *BlocklistHandler) handleBlocklist(w http.ResponseWriter, r *http.Request) {
+	switch r.Method {
+	case "GET":
+		writeJSON(w, http.StatusOK, h.store.Get())
+	case "POST", "PUT":
+		var bs config.BlocklistSettings
+		if err := json.NewDecoder(r.Body).Decode(&bs); err != nil {
+			writeJSON(w, http.StatusBadRequest, errResp("invalid JSON: "+err.Error()))
+			return
+		}
+		if err := h.store.Set(bs); err != nil {
+			writeJSON(w, http.StatusBadRequest, errResp(err.Error()))
+			return
+		}
+		writeJSON(w, http.StatusOK, map[string]interface{}{
+			"status": "saved",
+			"settings": h.store.Get(),
+		})
+	default:
+		writeJSON(w, http.StatusMethodNotAllowed, errResp("method not allowed"))
+	}
+}