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>

backend/platform-bridge/internal/adapter/qq/adapter.go

@@ -26,6 +26,7 @@ var upgrader = websocket.Upgrader{
 //   - "server" (正向 WS): adapter starts a WS server, NapCat connects as client.
 //   - "client" (反向 WS): adapter connects to NapCat's WS server as a client.
 type Adapter struct {
+	configID       string // immutable unique ID from PlatformConfig
 	configName     string // instance name, e.g. "qq-home"
 	mode           string // "client" or "server"
 	port           string
@@ -46,11 +47,12 @@ type Adapter struct {
 	respMu           sync.Mutex
 }
 
-func NewAdapter(configName, mode, port, accessToken, remoteURL string, sendIntervalMs int) *Adapter {
+func NewAdapter(configID, configName, mode, port, accessToken, remoteURL string, sendIntervalMs int) *Adapter {
 	if mode == "" {
 		mode = "server"
 	}
 	return &Adapter{
+		configID:         configID,
 		configName:       configName,
 		mode:             mode,
 		port:             port,
@@ -63,6 +65,7 @@ func NewAdapter(configName, mode, port, accessToken, remoteURL string, sendInter
 }
 
 func (a *Adapter) PlatformName() string   { return "qq" }
+func (a *Adapter) ConfigID() string      { return a.configID }
 func (a *Adapter) ConfigName() string    { return a.configName }
 func (a *Adapter) SendIntervalMs() int   { return a.sendIntervalMs }
 func (a *Adapter) SelfID() string        { return a.selfID }

backend/platform-bridge/internal/adapter/qq/protocol.go

@@ -81,5 +81,5 @@ type OBv11Params struct {
 	UserID      int64       `json:"user_id,omitempty"`
 	GroupID     int64       `json:"group_id,omitempty"`
 	Message     interface{} `json:"message"`
-	AutoEscape  bool        `json:"auto_escape,omitempty"`
+	AutoEscape  bool        `json:"auto_escape"`
 }

backend/platform-bridge/internal/bridge/adapter.go

@@ -32,6 +32,8 @@ type ChannelInfo struct {
 	ChannelType string `json:"channel_type"` // "group", "private"
 	ChannelID   string `json:"channel_id"`
 	ChannelName string `json:"channel_name,omitempty"`
+	AdapterID   string `json:"adapter_id,omitempty"`   // config ID of the adapter instance
+	AdapterName string `json:"adapter_name,omitempty"` // config name, e.g. "qq-main"
 }
 
 // ChannelLister is an optional interface for adapters that can enumerate

backend/platform-bridge/internal/config/store.go

@@ -1,6 +1,8 @@
 package config
 
 import (
+	"crypto/rand"
+	"encoding/hex"
 	"encoding/json"
 	"fmt"
 	"os"
@@ -10,11 +12,13 @@ import (
 
 // PlatformConfig holds persistent configuration for one platform adapter.
 type PlatformConfig struct {
-	Name      string            `json:"name"`
-	Platform  string            `json:"platform"` // base platform type: "qq", "telegram", etc.
+	ID        string            `json:"id"`        // immutable unique ID, generated at creation
+	Name      string            `json:"name"`      // config key, e.g. "qq-main", "qq-work"
+	Platform  string            `json:"platform"`  // base platform type: "qq", "telegram", etc.
 	Enabled   bool              `json:"enabled"`
 	Label     string            `json:"label"`
 	Fields    map[string]string `json:"fields"`
+	CreatedAt time.Time         `json:"created_at"`
 	UpdatedAt time.Time         `json:"updated_at"`
 }
 
@@ -102,11 +106,22 @@ func (s *Store) Set(cfg PlatformConfig) error {
 	if cfg.Fields == nil {
 		cfg.Fields = make(map[string]string)
 	}
+	// Generate stable ID for new configs.
+	if cfg.ID == "" {
+		cfg.ID = generateConfigID()
+		cfg.CreatedAt = time.Now()
+	}
 	cfg.UpdatedAt = time.Now()
 	s.configs[cfg.Name] = &cfg
 	return s.save()
 }
 
+func generateConfigID() string {
+	b := make([]byte, 8)
+	rand.Read(b)
+	return hex.EncodeToString(b)
+}
+
 // Delete removes a platform config and persists.
 func (s *Store) Delete(name string) error {
 	s.mu.Lock()