feat(servel): Phase 8 v1.1.0 — update checker + tray quick-switch + port conflict

[devhardiyanto]

What

Phase 8 (v1.1.0) — tiga fitur quality-of-life post-MVP: update checker, tray quick-switch versi PHP/Node, dan deteksi konflik port sebelum start service.

Why

MVP v1.0 sudah shippable; ini enhancement opsional pertama di jalur v1.1. Ketiganya low-risk & additive (tak mengubah kontrak config.json) — cocok digabung 1 rilis bersih. Multiple profiles (M9) sengaja ditunda ke sprint sendiri karena mengubah skema config.

How

• M10 Port conflict — command check_port_conflicts memprobe host port tiap service via TcpListener::bind (portable lintas-OS, tanpa parse netstat), meng-exclude service yang sudah running agar port container servel sendiri tak terhitung konflik. Frontend start() cek dulu → banner amber (service + port) dengan aksi "Tetap mulai" / "Tutup"; tak start diam-diam.
• M7 Update checker — useUpdateCheck fetch GET /releases/latest (channel stable) saat launch + tombol manual di Settings › About. Banner "versi baru tersedia" + link rilis bila lebih baru. compareSemver menangani suffix prerelease. CSP connect-src +https://api.github.com. Tanpa background polling.
• M8 Tray quick-switch — submenu PHP & Node di tray, di-populate async dari php_list_installed/node_list_installed (versi aktif ditandai ●) via set_menu. Klik item → emit event tray-switch-version {kind,version}; usePhp/useNode listen → reuse switchTo (update active + persist config).

Changes

Lapisan	File	Perubahan
tauri	commands/services.rs, lib.rs	command + helper check_port_conflicts / probe_host_port + 2 test
frontend	useServices.ts, types/service.ts, Dashboard.vue	probe konflik + banner
frontend	useUpdateCheck.ts (baru), Settings.vue, App.vue	update checker + UI
infra	tauri.conf.json	CSP +api.github.com
tauri	tray.rs	submenu quick-switch versi + emit event
frontend	usePhp.ts, useNode.ts	listener tray-switch-version → switchTo
release	package.json, package-lock.json, Cargo.toml, Cargo.lock, tauri.conf.json	bump 1.0.0-beta.4 → 1.1.0

Verifikasi

• cargo test 58 pass (2 baru) · vue-tsc --noEmit ✓ · npm run tauri build sukses → Servel_1.1.0_x64-setup.exe.

Batasan diketahui

• M8: listener tray-switch aktif hanya saat view pemilik (Dashboard) mounted; versi aktif (●) di menu tak auto-refresh setelah switch sampai app restart.
• M10: melapor "port X terpakai" tanpa nama proses pemegang (butuh netstat/ss per-OS — descoped demi portabilitas).
• M7: banner aktif setelah rilis stable ter-publish (/releases/latest masih 404 selama semua rilis = prerelease).

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