feat: sitemap settings singleton with content types and additional addresses

- one settings tile opening the golem15.sitemap.settings singleton
- Files tab (site address, file size, S1 files partial), Additional
  addresses repeater, Content types tab built from signpost at boot
- golem15_sitemap_types; a type switched off leaves the files (reason type)
- a save validates (errors.*) and dispatches a rebuild after commit

admin.go

@@ -5,29 +5,28 @@ import (
 	"io/fs"
 
 	"git.golem15.com/golem15/sm-sitemap-plugin/controllers"
-	"git.golem15.com/golem15/sm-sitemap-plugin/models"
 	"git.golem15.com/golem15/summercms/modules/backpack"
 	"git.golem15.com/golem15/summercms/modules/pact"
 )
 
-// adminFS holds the admin YAML file by file: the controllers directory also
-// holds Go sources.
+// adminFS holds the admin YAML and partial templates by pattern (the
+// controllers directory also holds Go sources), so a new screen or partial
+// needs no edit here.
 //
-//go:embed controllers/definitions/config_form.yaml models/definition/fields.yaml models/settings/fields.yaml
+//go:embed controllers/*/*.yaml controllers/*/_*.htm models/*/*.yaml
 var adminFS embed.FS
 
 //go:embed lang
 var langFS embed.FS
 
-// AdminFS serves the admin YAML.
+// AdminFS serves the admin YAML and partials.
 func (p *Plugin) AdminFS() fs.FS { return adminFS }
 
 // LangFS is the embedded English and Polish phrasebooks.
 func (p *Plugin) LangFS() fs.FS { return langFS }
 
 // AdminControllers hands the controllers a lazy accessor of the booted app,
-// so they read the database and the menu item type registry at request
-// time.
+// so they read the database and the content type registry at request time.
 func (p *Plugin) AdminControllers() []pact.AdminController {
 	return controllers.AdminControllers(func() *backpack.App {
 		if p == nil {
@@ -37,31 +36,21 @@ func (p *Plugin) AdminControllers() []pact.AdminController {
 	})
 }
 
-// Settings registers the two PHP settings entries in the CMS category: the
-// sitemap definition (a link to the singleton definitions controller) and
-// the sitemap settings form. Both require golem15.sitemap.access_definitions.
+// Settings registers the one sitemap settings tile (UI-SPEC C26): a link to
+// the settings singleton controller in the CMS category, behind
+// golem15.sitemap.access_definitions. It replaces the Phase 17 definitions
+// and settings tiles (D-32).
 func (p *Plugin) Settings() []pact.SettingsItem {
-	return []pact.SettingsItem{
-		{
-			Code:        "sitemap",
-			Label:       "golem15.sitemap::lang.plugin.name",
-			Description: "golem15.sitemap::lang.plugin.description",
-			Category:    "golem15.sitemap::lang.settings.category",
-			Icon:        "network",
-			Permissions: []string{controllers.PermissionAccessDefinitions},
-			Controller:  controllers.DefinitionsControllerID,
-		},
-		{
-			Code:        "sitemap_settings",
-			Label:       "golem15.sitemap::lang.settings.label",
-			Description: "golem15.sitemap::lang.settings.description",
-			Category:    "golem15.sitemap::lang.settings.category",
-			Icon:        "settings",
-			Permissions: []string{controllers.PermissionAccessDefinitions},
-			Form:        "models/settings/fields.yaml",
-			NewModel:    func() any { return &models.Settings{} },
-		},
-	}
+	return []pact.SettingsItem{{
+		Code:        "sitemap",
+		Label:       "golem15.sitemap::lang.settings.label",
+		Description: "golem15.sitemap::lang.settings.description",
+		Category:    "golem15.sitemap::lang.settings.category",
+		Icon:        "network",
+		Keywords:    []string{"sitemap", "sitemap.xml", "lastmod", "hreflang"},
+		Permissions: []string{controllers.PermissionAccessDefinitions},
+		Controller:  controllers.SettingsControllerID,
+	}}
 }
 
 var (