feat: add support for 'features.agent_view' app manifest property (#596)

* feat: add agent_view manifest types

Adds AgentView and AgentViewAction structs and an AgentView field on
AppFeatures so manifests using the new agent_view property survive
JSON/YAML round-trips through the CLI. Mirrors AssistantView and reuses
the existing SuggestedPrompts type.

* test: drop redundant agent_view round-trip test

The agent_view JSON marshal cases live in Test_AppManifest_AppFeatures
alongside other features. The standalone round-trip test had no
precedent for sibling properties like assistant_view.

Author: mwbrooks

internal/shared/types/app_manifest.go

@@ -70,6 +70,7 @@ type DisplayInformation struct {
 
 type AppFeatures struct {
 	AppHome                    ManifestAppHome             `json:"app_home,omitempty" yaml:"app_home,flow,omitempty"`
+	AgentView                  *AgentView                  `json:"agent_view,omitempty" yaml:"agent_view,omitempty"`
 	AssistantView              *AssistantView              `json:"assistant_view,omitempty" yaml:"assistant_view,omitempty"`
 	BotUser                    BotUser                     `json:"bot_user,omitempty" yaml:"bot_user,flow,omitempty"`
 	WorkflowSteps              []WorkflowStep              `json:"workflow_steps,omitempty" yaml:"workflow_steps,flow,omitempty"`
@@ -95,6 +96,17 @@ type SuggestedPrompts struct {
 	Message string `json:"message,omitempty" yaml:"message,omitempty"`
 }
 
+type AgentView struct {
+	AgentDescription string             `json:"agent_description,omitempty" yaml:"agent_description,omitempty"`
+	SuggestedPrompts []SuggestedPrompts `json:"suggested_prompts,omitempty" yaml:"suggested_prompts,flow,omitempty"`
+	Actions          []AgentViewAction  `json:"actions,omitempty" yaml:"actions,flow,omitempty"`
+}
+
+type AgentViewAction struct {
+	Name        string `json:"name,omitempty" yaml:"name,omitempty"`
+	Description string `json:"description,omitempty" yaml:"description,omitempty"`
+}
+
 type OAuthConfig struct {
 	RedirectURLs           []string        `json:"redirect_urls,omitempty" yaml:"redirect_urls,flow,omitempty"`
 	Scopes                 *ManifestScopes `json:"scopes,omitempty" yaml:"scopes,flow,omitempty"`

internal/shared/types/app_manifest_test.go

@@ -192,6 +192,40 @@ func Test_AppManifest_AppFeatures(t *testing.T) {
 			},
 			want: `{"app_home":{},"assistant_view":{"assistant_description":"magic","suggested_prompts":[{"title":"visit the beach","message":"what is glass"}]},"bot_user":{"display_name":"einstein"}}`,
 		},
+		"includes agent view when provided": {
+			features: AppFeatures{
+				AgentView: &AgentView{
+					AgentDescription: "summarizes threads",
+					SuggestedPrompts: []SuggestedPrompts{
+						{
+							Title:   "summarize this thread",
+							Message: "please summarize the conversation",
+						},
+					},
+					Actions: []AgentViewAction{
+						{
+							Name:        "open_settings",
+							Description: "Open the agent settings panel.",
+						},
+					},
+				},
+				BotUser: BotUser{
+					DisplayName: "agent_smith",
+				},
+			},
+			want: `{"app_home":{},"agent_view":{"agent_description":"summarizes threads","suggested_prompts":[{"title":"summarize this thread","message":"please summarize the conversation"}],"actions":[{"name":"open_settings","description":"Open the agent settings panel."}]},"bot_user":{"display_name":"agent_smith"}}`,
+		},
+		"omits agent view fields when empty": {
+			features: AppFeatures{
+				AgentView: &AgentView{
+					AgentDescription: "minimal",
+				},
+				BotUser: BotUser{
+					DisplayName: "agent_smith",
+				},
+			},
+			want: `{"app_home":{},"agent_view":{"agent_description":"minimal"},"bot_user":{"display_name":"agent_smith"}}`,
+		},
 		"includes search when provided": {
 			features: AppFeatures{
 				BotUser: BotUser{