feat(phase1): OpenRouter采集器接入PostgreSQL，数据链路闭环

- 将 fetch_openrouter.go 的 summarize() 实现为 PostgreSQL upsert
- 新增 -db 参数和 DATABASE_URL 环境变量支持
- 打通 models + model_prices 表的最小可运行链路
- 创建 llm_intelligence 数据库并运行 migration
- 前端 Explorer 验证 T-3.2~T-3.5 全部通过
- 日报生成器正常产出 Markdown 和 latest_models.json

TOOLS.md

@@ -0,0 +1,44 @@
+# TOOLS.md - Local Notes
+
+Skills define _how_ tools work. This file is for _your_ specifics — the stuff that's unique to your setup.
+
+## What Goes Here
+
+Things like:
+
+- Camera names and locations
+- SSH hosts and aliases
+- Preferred voices for TTS
+- Speaker/room names
+- Device nicknames
+- Anything environment-specific
+
+## Examples
+
+```markdown
+### Cameras
+
+- living-room → Main area, 180° wide angle
+- front-door → Entrance, motion-triggered
+
+### SSH
+
+- home-server → 192.168.1.100, user: admin
+
+### TTS
+
+- Preferred voice: "Nova" (warm, slightly British)
+- Default speaker: Kitchen HomePod
+```
+
+## Why Separate?
+
+Skills are shared. Your setup is yours. Keeping them apart means you can update skills without losing your notes, and share skills without leaking your infrastructure.
+
+---
+
+Add whatever helps you do your job. This is your cheat sheet.
+
+## Related
+
+- [Agent workspace](/concepts/agent-workspace)