Expand AGENTS.md with current repo and reporting rules

.github/copilot-instructions.md

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+# Copilot Instructions for ProxyWarden
+
+Read `AGENTS.md` first. Follow the repo invariants there.
+
+## Key reminders
+
+- This is a standalone Windows Tauri 2 + React/TypeScript + Rust app.
+- Do not turn it into a SaaS, gateway, server or cloud control plane.
+- Do not call `invoke(...)` outside `src/api/tauriCommands.ts`.
+- Do not make Local sing-box required for external SOCKS5 routing.
+- Do not hide install/start/stop/uninstall behind apply.
+- Do not log or display full subscription URLs, proxy credentials or outbound secrets.
+- Keep Tauri capabilities minimal and CSP enabled.
+- Treat `commands.rs` and `App.tsx` as large legacy orchestration files that should shrink over time.
+- For security-sensitive changes, read `.agent/skills/security-hardening/SKILL.md`.
+- For Windows service/elevation changes, read `.agent/skills/windows-services-powershell/SKILL.md`.
+
+## Reporting style
+
+Before non-trivial answers, follow `.agent/skills/communication-reporting/SKILL.md` and `.agent/checklists/communication.md`.
+
+- Start with `Коротко`: 2-4 main points.
+- For code changes, include a `Файл / Что изменилось / Зачем` table.
+- Explain only important behavior, safety, UX and risk points. Do not retell every line.
+- Split checks into `Проверено` and `Не проверено`.
+- State unverified Windows/UAC/service behavior honestly.