feat(tui): expose HTTP method and accepted status codes in monitor form

DB fields existed but were never surfaced in the TUI. Adds an HTTP
Settings form group with method select (7 methods) and accepted
codes input, visible only for HTTP monitors.

internal/tui/tab_sites.go

@@ -24,6 +24,8 @@ type siteFormData struct {
 	Name          string
 	SiteType      string
 	URL           string
+	Method        string
+	AcceptedCodes string
 	Interval      string
 	AlertID       string
 	CheckSSL      bool
@@ -278,6 +280,8 @@ func (m Model) viewSitesTab() string {
 func (m *Model) initSiteHuhForm() tea.Cmd {
 	m.siteFormData = &siteFormData{
 		SiteType:      "http",
+		Method:        "GET",
+		AcceptedCodes: "200-299",
 		Interval:      "60",
 		Threshold:     "7",
 		Retries:       "0",
@@ -303,6 +307,8 @@ func (m *Model) initSiteHuhForm() tea.Cmd {
 				m.siteFormData.Description = site.Description
 				m.siteFormData.IgnoreTLS = site.IgnoreTLS
 				m.siteFormData.GroupID = strconv.Itoa(site.ParentID)
+				m.siteFormData.Method = site.Method
+				m.siteFormData.AcceptedCodes = site.AcceptedCodes
 				break
 			}
 		}
@@ -432,6 +438,24 @@ func (m *Model) initSiteHuhForm() tea.Cmd {
 		).Title("Connection").WithHideFunc(func() bool {
 			return m.siteFormData.SiteType == "group"
 		}),
+		huh.NewGroup(
+			huh.NewSelect[string]().Title("HTTP Method").
+				Options(
+					huh.NewOption("GET", "GET"),
+					huh.NewOption("POST", "POST"),
+					huh.NewOption("PUT", "PUT"),
+					huh.NewOption("PATCH", "PATCH"),
+					huh.NewOption("DELETE", "DELETE"),
+					huh.NewOption("HEAD", "HEAD"),
+					huh.NewOption("OPTIONS", "OPTIONS"),
+				).Value(&m.siteFormData.Method),
+			huh.NewInput().Title("Accepted Status Codes").
+				Placeholder("200-299").
+				Description("Ranges (200-299) and singles (301) separated by commas").
+				Value(&m.siteFormData.AcceptedCodes),
+		).Title("HTTP Settings").WithHideFunc(func() bool {
+			return m.siteFormData.SiteType != "http"
+		}),
 		huh.NewGroup(
 			huh.NewConfirm().Title("Monitor SSL Certificate?").
 				Value(&m.siteFormData.CheckSSL),
@@ -503,6 +527,8 @@ func (m *Model) submitSiteForm() {
 		Description:     d.Description,
 		IgnoreTLS:       d.IgnoreTLS,
 		ParentID:        groupID,
+		Method:          d.Method,
+		AcceptedCodes:   d.AcceptedCodes,
 	}
 
 	if m.editID > 0 {