jim800121chen 3f0175f1a9 feat(local-agent): Phase 0.5 visionA Agent — Wails 桌面 + tunnel client + 配對 UI
從 local-tool 複製出獨立的「visionA Agent」桌面應用(A3 純橋樑:
tunnel client + 配對 UI + 設定,不開 HTTP port、不做本機裝置/推論 UI)。
Bundle ID 與 local-tool 不同(com.innovedus.visiona-agent vs visiona-local),
雙 app 可共存。fork 後不主動 sync,需要時手動 cherry-pick。

Backend / Wails Go(AB1-AB13):
- internal/tunnel:6 狀態機(Idle/Connecting/Connected/Reconnecting/Failed/Stopped)
  + Pair/Unpair/Reconnect/Disconnect binding + ClientHooks event
- internal/auth:encrypted file token store(AES-GCM + scrypt + machineID
  fallback salt + 13 tests)
- internal/config:YAML validation + atomic write + 11 tests
- internal/log:ring buffer + ExportLog 升級 zip
- visionA-backend /api/pairing/exchange:SessionTokenStore + 17 new tests
- 三平台 build 驗證(macOS DMG 160 MB / Windows EXE / Linux AppImage)
- end-to-end 5 milestone 全綠(pairing → tunnel → forward → reuse 防護
  → tunnel drop failover)

Frontend / Next.js(AF1-AF7,沿用 visionA-frontend 基礎):
- AppShell + Header + TabNav(StatusView / PairView / SettingsView 三 tab)
- ConnectionStatusBadge 5 種狀態
- TokenInput regex 驗證 + 7 種錯誤 + 0.5s auto-switch 到狀態頁
- 設定頁 4 區塊(含重新配對 AlertDialog)
- agent-api.ts 封裝 Wails bindings(mock/real 雙實作)+ 90 tests

Phase 0.7 review-driven fix(Round 2):
- A1 Session fixation 防護(RotateSessionID)
- A3 mock pairing 預設改 false(必須明確 opt-in)+ startup log
- A4 Pair 失敗後 state 清理矩陣(exchange/Save/Start fail 各自終態)
- A5 Pair/Unpair/Reconnect lifecycleMu + 50 goroutine race test
- F1 重新配對次按鈕 / F2 PairView Esc cancel / F3 Wails BrowserOpenURL
  / F4 Settings draft 持久 + 未儲存 badge

驗證:agent backend go test -race -count=3 ./... 4 packages 全綠 /
agent frontend pnpm test 119 tests 全綠

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
2026-05-01 11:22:01 +08:00

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package ws
import (
"net/http"
"net/url"
"strings"
)
// CheckOrigin 決定 WebSocket upgrade 是否允許。
//
// M8-8 / TDD v2/cors-security.md §5
// 與 HTTP CORS 白名單一致,只允許本機 loopback 來源:
// - http://127.0.0.1:* / http://localhost:* / http://[::1]:*
// - same-originOrigin header 為空gorilla 預設行為)
//
// 注意:這個 helper 故意與 api package 的 isAllowedOrigin 重複實作(不直接 import
// 避免 ws → api 反向 import會造成 cycle。兩邊邏輯保持一致。
func CheckOrigin(r *http.Request) bool {
origin := r.Header.Get("Origin")
if origin == "" {
// same-origin 或非瀏覽器 clientwebsocat、Postman 等)
return true
}
if origin == "null" {
return false
}
u, err := url.Parse(origin)
if err != nil {
return false
}
if u.Scheme != "http" {
return false
}
host := strings.ToLower(u.Hostname())
switch host {
case "127.0.0.1", "localhost", "::1", "[::1]":
return true
}
return false
}