feat: Phase 1+2 架构进化 — 连续思考链/主动消息决策/情感状态机/离线自主思考 (86文件)

Phase 1 (基础设施):
- ThinkChain 思考链连续性 + 差异化思考提示词 (persistent)
- AutonomousToolPolicy 工具安全策略 (safe/unsafe/conditional)
- MessageScheduler 自适应消息节奏 (Idle/Available/Busy)
- SessionEnrichmentStore 渐进式上下文丰富 (5层)
- ConversationBus 事件总线 + ResponseCache (dedup)
- pkg/logger 统一日志 + 所有 handler 替换 fmt.Printf
- NPE 守卫/链路优化/数据库表修复/Go workspace

Phase 2 (人格交互):
- EmotionState/EmotionTracker 情感状态机 (5种心情, 情绪衰减)
- ProactiveGuard 主动消息多维决策 (静默时段/紧急度/频率/校验)
- Gateway↔ai-core 在线状态感知链路 (presence notification)
- 离线思考频率控制 + 重连问候 + 离线消息排队

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

backend/voice-service/internal/handler/tts_handler.go

@@ -2,7 +2,7 @@ package handler
 
 import (
 	"encoding/json"
-	"log"
+	"github.com/yourname/cyrene-ai/pkg/logger"
 	"net/http"
 
 	"github.com/yourname/cyrene-ai/voice-service/internal/service"
@@ -54,7 +54,7 @@ func (h *TTSHandler) handleSynthesize(w http.ResponseWriter, r *http.Request) {
 	// 调用合成 (Synthesize 内部已包含 fallback 链: edge-tts → espeak-ng → 静默 WAV)
 	audioData, format, err := h.svc.Synthesize(req.Text, req.Voice, req.Rate)
 	if err != nil {
-		log.Printf("[tts-handler] TTS 合成失败: %v", err)
+		logger.Printf("[tts-handler] TTS 合成失败: %v", err)
 		writeError(w, http.StatusInternalServerError, "TTS 合成失败: "+err.Error())
 		return
 	}