fix(docs): align user manual with v3.10.3 codebase

- Add OpenCode as 4th supported app throughout all docs
- Fix proxy default port 15762 → 15721
- Update Claude presets (9 → 26), Codex (3 → 10), Gemini (3 → 7)
- Add OpenCode presets (25 entries)
- Fix timeout defaults and ranges (stream first byte 60s/90s, etc.)
- Fix circuit breaker defaults with per-app values (Claude vs general)
- Fix Skills support: all 4 apps, not just Claude/Codex
- Remove non-existent Gemini authMode field
- Fix prompt deletion behavior: enabled prompts cannot be deleted
- Remove non-existent Legacy deeplink protocol, use V1 only
- Fix DB table names (usage_logs → proxy_request_logs) and add missing tables
- Fix migration version v3.8.0 → v3.7.0
- Add missing V1 deeplink parameters (config, configFormat, etc.)
- Update doc version v3.9.1 → v3.10.3
- Add claude-opus-4-1 to pricing table
- Fix recovery wait time range 10-300 → 0-300

docs/user-manual/2-providers/2.2-switch.md

@@ -26,7 +26,7 @@
 ### 操作步骤
 
 1. 右键点击系统托盘的 CC Switch 图标
-2. 在菜单中找到对应应用（Claude/Codex/Gemini）
+2. 在菜单中找到对应应用（Claude/Codex/Gemini/OpenCode）
 3. 点击要切换的供应商名称
 4. 切换完成，托盘会短暂提示