feat: 平台配置唯一ID — PlatformConfig.ID + adapter全链路传播

- PlatformConfig 新增 ID 字段 (8字节hex，创建时自动生成)
- QQ adapter 新增 configID + ConfigID() 访问器
- ChannelInfo 新增 AdapterID + AdapterName
- createSingleAdapter 接受 configID 参数
- 同一个平台类型的多个配置实例通过 ID 唯一区分

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

_fix_bridge.py

@@ -0,0 +1,97 @@
+with open('d:/Project/Code/Uni/Cyrene/backend/platform-bridge/internal/handler/bridge_handler.go', 'r', encoding='utf-8') as f:
+    lines = f.readlines()
+
+# 1. Add sync and time to imports
+for i, line in enumerate(lines):
+    if line.strip() == '"strconv"':
+        lines.insert(i+1, '\t"sync"\n')
+        lines.insert(i+2, '\t"time"\n')
+        print('1. Imports added')
+        break
+
+# 2. Add fields to struct
+for i, line in enumerate(lines):
+    if 'internalToken string' in line:
+        lines.insert(i+1, '\tchannelsMu    sync.RWMutex\n')
+        lines.insert(i+2, '\tcachedChannels []bridge.ChannelInfo\n')
+        print('2. Struct fields added')
+        break
+
+# 3. Add route
+for i, line in enumerate(lines):
+    if 'send-proactive' in line:
+        lines.insert(i+1, '\tmux.HandleFunc("/api/v1/channels", h.listChannels)\n')
+        print('3. Route added')
+        break
+
+# 4. Add listChannels handler (before func health)
+for i, line in enumerate(lines):
+    if line.strip().startswith('func (h *BridgeHandler) health('):
+        handler = '''// listChannels returns cached channels from all adapters (groups + friends).
+// GET /api/v1/channels
+func (h *BridgeHandler) listChannels(w http.ResponseWriter, r *http.Request) {
+\th.channelsMu.RLock()
+\tchannels := h.cachedChannels
+\th.channelsMu.RUnlock()
+\tif channels == nil {
+\t\tchannels = []bridge.ChannelInfo{}
+\t}
+\twriteJSON(w, http.StatusOK, map[string]interface{}{
+\t\t"channels": channels,
+\t\t"total":    len(channels),
+\t})
+}
+
+'''
+        lines[i:i] = [handler]
+        print('4. listChannels added')
+        break
+
+# 5. Add refresh methods at end
+for i in range(len(lines)-1, 0, -1):
+    if lines[i].rstrip() == '}':
+        last = i
+        break
+
+refresh = '''
+// StartChannelRefresh periodically queries all adapters for their channel lists.
+func (h *BridgeHandler) StartChannelRefresh(interval time.Duration) {
+\tif interval <= 0 {
+\t\tinterval = 10 * time.Minute
+\t}
+\tgo func() {
+\t\tticker := time.NewTicker(interval)
+\t\tdefer ticker.Stop()
+\t\tlog.Printf("[channel-refresh] 频道缓存刷新已启动 (间隔=%v)", interval)
+\t\th.refreshChannels()
+\t\tfor range ticker.C {
+\t\t\th.refreshChannels()
+\t\t}
+\t}()
+}
+
+func (h *BridgeHandler) refreshChannels() {
+\tvar all []bridge.ChannelInfo
+\tfor _, name := range h.router.ListAdapters() {
+\t\ta, err := h.router.GetAdapter(name)
+\t\tif err != nil {
+\t\t\tcontinue
+\t\t}
+\t\tif lister, ok := a.(bridge.ChannelLister); ok {
+\t\t\tchannels := lister.ListChannels()
+\t\t\tall = append(all, channels...)
+\t\t}
+\t}
+\th.channelsMu.Lock()
+\th.cachedChannels = all
+\th.channelsMu.Unlock()
+\tlog.Printf("[channel-refresh] 频道缓存已更新: %d 个频道", len(all))
+}
+'''
+
+lines.insert(last, refresh)
+print('5. Refresh methods added')
+
+with open('d:/Project/Code/Uni/Cyrene/backend/platform-bridge/internal/handler/bridge_handler.go', 'w', encoding='utf-8') as f:
+    f.write(''.join(lines))
+print('DONE')