feat(v2): T-309 test-connection button with result popup

Adds a 测试连接摄像头 button next to save; it builds the RTSP URL from the
current form fields and runs ffprobe (8s timeout) off the UI thread, then
shows a result popup (success WxH@fps, or a redacted failure). Exports
config.BuildRTSPURL and source.Probe/Redact for it. Cross-compiles for
Windows; config/source tests pass.

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>

v2/cmd/silver-pose/main.go

@@ -187,8 +187,9 @@ func settingsFor(cfg config.Config, configPath string) ui.Settings {
 		EventSummary: fmt.Sprintf("确认 %.1f 秒；水平角 %.0f°；快速下移=%t；下肢=%t",
 			cfg.Event.ConfirmWindowSeconds, cfg.Event.HorizontalAngleThresholdDegrees,
 			cfg.Event.RequireRapidDrop, cfg.Event.RequireLowerBody),
-		ConfigPath: configPath,
+		FFprobePath: cfg.Tools.FFprobePath,
-		Camera:     cameraFieldsFrom(configPath),
+		ConfigPath:  configPath,
+		Camera:      cameraFieldsFrom(configPath),
 		Params: ui.ParamFields{
 			KeypointConfidence:     float64(cfg.Event.KeypointConfidenceThreshold),
 			ConfirmWindowSeconds:   cfg.Event.ConfirmWindowSeconds,

v2/internal/config/config.go

@@ -248,11 +248,11 @@ func structuredSourceURL(raw rawSource) (string, error) {
 	if raw.Channel != nil && strings.TrimSpace(*raw.Channel) != "" {
 		channel = strings.TrimSpace(*raw.Channel)
 	}
-	return buildRTSPURL(host, port, strings.TrimSpace(*raw.Username), *raw.Password, channel), nil
+	return BuildRTSPURL(host, port, strings.TrimSpace(*raw.Username), *raw.Password, channel), nil
 }
 
-// buildRTSPURL assembles a Hikvision RTSP URL with percent-encoded credentials.
+// BuildRTSPURL assembles a Hikvision RTSP URL with percent-encoded credentials.
-func buildRTSPURL(host string, port int, username, password, channel string) string {
+func BuildRTSPURL(host string, port int, username, password, channel string) string {
 	address := url.URL{
 		Scheme: "rtsp",
 		User:   url.UserPassword(username, password),

v2/internal/source/stream.go

@@ -199,6 +199,12 @@ func waitContext(ctx context.Context, duration time.Duration) error {
 	}
 }
 
+// Probe attempts to read stream metadata once, for a settings "test connection".
+func Probe(ctx context.Context, config Config) (Metadata, error) { return probe(ctx, config) }
+
+// Redact removes the source URL/credentials from text for safe display.
+func Redact(text, sourceURL string) string { return redact(text, sourceURL) }
+
 func probe(ctx context.Context, config Config) (Metadata, error) {
 	if strings.TrimSpace(config.FFprobePath) == "" {
 		return Metadata{}, errors.New("FFprobe executable is not configured")

v2/internal/ui/window.go

@@ -1,6 +1,7 @@
 package ui
 
 import (
+	"context"
 	"fmt"
 	"image"
 	"image/color"
@@ -27,6 +28,7 @@ import (
 	"silverpose/v2/internal/config"
 	"silverpose/v2/internal/fall"
 	"silverpose/v2/internal/monitor"
+	"silverpose/v2/internal/source"
 )
 
 const (
@@ -52,6 +54,7 @@ type Settings struct {
 	ModelSHA256       string
 	RuntimeSummary    string
 	EventSummary      string
+	FFprobePath       string
 	ConfigPath        string
 	Camera            CameraFields
 	Params            ParamFields
@@ -152,9 +155,15 @@ type Window struct {
 	requireLower   widget.Bool
 	saveCamera     widget.Clickable
 	saveParams     widget.Clickable
+	testConn       widget.Clickable
+	testClose      widget.Clickable
 	settingsStatus string
 	settingsList   widget.List
 	cameraID       string
+	ffprobePath    string
+	testMessage    string
+	showTest       bool
+	testing        bool
 }
 
 func setEditor(editor *widget.Editor, value string) {
@@ -217,6 +226,7 @@ func NewWindow(settings Settings, commands Commands) (*Window, error) {
 	window.requireLower.Value = params.RequireLowerBody
 	window.settingsList.Axis = layout.Vertical
 	window.cameraID = defaultString(camera.ID, "ip-camera")
+	window.ffprobePath = settings.FFprobePath
 
 	return window, nil
 }
@@ -365,6 +375,8 @@ func (window *Window) layout(gtx layout.Context) layout.Dimensions {
 	pendingAt := window.pendingAt
 	incoming := window.incoming
 	running := window.running
+	showTest := window.showTest
+	testMessage := window.testMessage
 	window.incoming = nil
 	window.mu.Unlock()
 
@@ -394,6 +406,12 @@ func (window *Window) layout(gtx layout.Context) layout.Dimensions {
 	if window.viewerClose.Clicked(gtx) {
 		window.viewing = nil
 	}
+	if window.testClose.Clicked(gtx) {
+		window.mu.Lock()
+		window.showTest = false
+		window.mu.Unlock()
+		showTest = false
+	}
 	// Esc closes the full-image viewer.
 	for {
 		event, ok := gtx.Event(key.Filter{Focus: window, Name: key.NameEscape})
@@ -441,6 +459,16 @@ func (window *Window) layout(gtx layout.Context) layout.Dimensions {
 	if window.viewing != nil {
 		children = append(children, layout.Expanded(scrim), layout.Expanded(window.layoutViewer))
 	}
+	if showTest {
+		children = append(children,
+			layout.Expanded(scrim),
+			layout.Stacked(func(gtx layout.Context) layout.Dimensions {
+				return layout.Center.Layout(gtx, func(gtx layout.Context) layout.Dimensions {
+					return window.layoutTestDialog(gtx, testMessage)
+				})
+			}),
+		)
+	}
 	if pending != nil {
 		record := *pending
 		children = append(children,
@@ -705,6 +733,9 @@ func (window *Window) layoutSettings(gtx layout.Context, model ViewModel) layout
 	if window.saveParams.Clicked(gtx) {
 		window.onSaveParams()
 	}
+	if window.testConn.Clicked(gtx) {
+		window.onTestConnection()
+	}
 	cameraCard := verticalRows(
 		window.heading("摄像头连接（账号密码仅存本地配置，下次启动生效）"),
 		window.editorRow("IP / 主机", &window.editHost),
@@ -715,7 +746,7 @@ func (window *Window) layoutSettings(gtx layout.Context, model ViewModel) layout
 		window.editorRow("传输 (tcp/udp)", &window.editTransport),
 		window.editorRow("连接超时 (秒)", &window.editTimeout),
 		window.checkRow("低延迟", &window.lowLatency),
-		window.buttonRow(&window.saveCamera, "保存摄像头参数"),
+		window.cameraButtonsRow(),
 	)
 	paramsCard := verticalRows(
 		window.heading("常用检测参数（下次启动生效）"),
@@ -857,6 +888,100 @@ func (window *Window) onSaveParams() {
 	window.settingsStatus = "参数已保存，将在下次开始监控时生效"
 }
 
+func (window *Window) cameraButtonsRow() layout.Widget {
+	return func(gtx layout.Context) layout.Dimensions {
+		return layout.Flex{Axis: layout.Horizontal}.Layout(gtx,
+			layout.Rigid(func(gtx layout.Context) layout.Dimensions {
+				return smallButton(gtx, window.theme, &window.saveCamera, "保存摄像头参数")
+			}),
+			layout.Rigid(layout.Spacer{Width: unit.Dp(8)}.Layout),
+			layout.Rigid(func(gtx layout.Context) layout.Dimensions {
+				return smallButton(gtx, window.theme, &window.testConn, "测试连接摄像头")
+			}),
+		)
+	}
+}
+
+func (window *Window) onTestConnection() {
+	window.mu.Lock()
+	if window.testing {
+		window.mu.Unlock()
+		return
+	}
+	window.mu.Unlock()
+
+	host := strings.TrimSpace(window.editHost.Text())
+	username := strings.TrimSpace(window.editUsername.Text())
+	password := window.editPassword.Text()
+	channel := strings.TrimSpace(window.editChannel.Text())
+	transport := strings.ToLower(strings.TrimSpace(window.editTransport.Text()))
+	port, portErr := strconv.Atoi(strings.TrimSpace(window.editPort.Text()))
+	timeout, _ := strconv.ParseFloat(strings.TrimSpace(window.editTimeout.Text()), 64)
+	if host == "" || username == "" || password == "" {
+		window.setTestResult("请先填写主机、账号和密码", false)
+		return
+	}
+	if portErr != nil || port < 1 || port > 65535 {
+		window.setTestResult("端口无效", false)
+		return
+	}
+	if timeout <= 0 {
+		timeout = 5
+	}
+	window.setTestResult("正在测试连接…", true)
+	go func() {
+		streamURL := config.BuildRTSPURL(host, port, username, password, channel)
+		ctx, cancel := context.WithTimeout(context.Background(), 8*time.Second)
+		defer cancel()
+		metadata, err := source.Probe(ctx, source.Config{
+			SourceURL: streamURL, FFprobePath: window.ffprobePath, Transport: transport,
+			Timeout: time.Duration(timeout * float64(time.Second)),
+		})
+		message := fmt.Sprintf("连接成功：%dx%d @ %.1f fps", metadata.Width, metadata.Height, metadata.FPS)
+		if err != nil {
+			message = "连接失败：" + source.Redact(err.Error(), streamURL)
+		}
+		window.setTestResult(message, false)
+	}()
+}
+
+func (window *Window) setTestResult(message string, testing bool) {
+	window.mu.Lock()
+	window.testMessage = message
+	window.showTest = true
+	window.testing = testing
+	window.mu.Unlock()
+	window.appWindow.Invalidate()
+}
+
+func (window *Window) layoutTestDialog(gtx layout.Context, message string) layout.Dimensions {
+	width := gtx.Dp(440)
+	if width > gtx.Constraints.Max.X {
+		width = gtx.Constraints.Max.X
+	}
+	gtx.Constraints.Min.X = width
+	gtx.Constraints.Max.X = width
+	return layout.Stack{}.Layout(gtx,
+		layout.Expanded(func(gtx layout.Context) layout.Dimensions {
+			rect := image.Rectangle{Max: gtx.Constraints.Min}
+			paint.FillShape(gtx.Ops, colorSurface, clip.UniformRRect(rect, gtx.Dp(8)).Op(gtx.Ops))
+			return layout.Dimensions{Size: gtx.Constraints.Min}
+		}),
+		layout.Stacked(func(gtx layout.Context) layout.Dimensions {
+			return layout.UniformInset(unit.Dp(16)).Layout(gtx, func(gtx layout.Context) layout.Dimensions {
+				return layout.Flex{Axis: layout.Vertical}.Layout(gtx,
+					layout.Rigid(material.H6(window.theme, "测试连接摄像头").Layout),
+					layout.Rigid(material.Body1(window.theme, message).Layout),
+					layout.Rigid(layout.Spacer{Height: unit.Dp(8)}.Layout),
+					layout.Rigid(func(gtx layout.Context) layout.Dimensions {
+						return smallButton(gtx, window.theme, &window.testClose, "关闭")
+					}),
+				)
+			})
+		}),
+	)
+}
+
 func highestState(result fall.FrameResult) fall.State {
 	state := fall.Normal
 	for _, person := range result.People {