Expose plugin manifest keywords in app server (#21271)

## Summary
- Add plugin manifest keywords to core plugin marketplace/detail models
- Expose keywords on app-server v2 PluginSummary and generated
schema/types
- Populate keywords in plugin/list and plugin/read responses for local
plugins

Depends on https://github.com/openai/openai/pull/891087

## Validation
- just fmt
- just write-app-server-schema
- cargo test -p codex-app-server-protocol
- cargo test -p codex-core-plugins
- cargo test -p codex-app-server
plugin_list_keeps_valid_marketplaces_when_another_marketplace_fails_to_load
- cargo test -p codex-app-server
plugin_read_returns_plugin_details_with_bundle_contents

codex-rs/app-server/tests/suite/v2/plugin_list.rs

@@ -197,7 +197,7 @@ async fn plugin_list_keeps_valid_marketplaces_when_another_marketplace_fails_to_
         valid_repo_root
             .path()
             .join("plugins/valid-plugin/.codex-plugin/plugin.json"),
-        r#"{"name":"valid-plugin"}"#,
+        r#"{"name":"valid-plugin","keywords":["api-key","developer tools"]}"#,
     )?;
     std::fs::write(invalid_marketplace_path.as_path(), "{not json")?;
 
@@ -246,6 +246,7 @@ async fn plugin_list_keeps_valid_marketplaces_when_another_marketplace_fails_to_
                 auth_policy: PluginAuthPolicy::OnInstall,
                 availability: codex_app_server_protocol::PluginAvailability::Available,
                 interface: None,
+                keywords: vec!["api-key".to_string(), "developer tools".to_string()],
             }],
         }]
     );
@@ -548,6 +549,7 @@ async fn plugin_list_uses_alternate_discoverable_manifest_and_keeps_undiscoverab
                         screenshots: Vec::new(),
                         screenshot_urls: Vec::new(),
                     }),
+                    keywords: Vec::new(),
                 },
                 PluginSummary {
                     id: "missing-plugin@alternate-marketplace".to_string(),
@@ -563,6 +565,7 @@ async fn plugin_list_uses_alternate_discoverable_manifest_and_keeps_undiscoverab
                     auth_policy: PluginAuthPolicy::OnInstall,
                     availability: codex_app_server_protocol::PluginAvailability::Available,
                     interface: None,
+                    keywords: Vec::new(),
                 },
             ],
         }]
@@ -1295,6 +1298,7 @@ async fn plugin_list_includes_remote_marketplaces_when_remote_plugin_enabled() -
         "display_name": "Linear",
         "description": "Track work in Linear",
         "app_ids": [],
+        "keywords": ["issue-tracking", "project management"],
         "interface": {
           "short_description": "Plan and track work",
           "capabilities": ["Read", "Write"],
@@ -1430,6 +1434,13 @@ async fn plugin_list_includes_remote_marketplaces_when_remote_plugin_enabled() -
             .and_then(|interface| interface.display_name.as_deref()),
         Some("Linear")
     );
+    assert_eq!(
+        remote_marketplace.plugins[0].keywords,
+        vec![
+            "issue-tracking".to_string(),
+            "project management".to_string()
+        ]
+    );
     assert_eq!(response.featured_plugin_ids, Vec::<String>::new());
     Ok(())
 }

codex-rs/app-server/tests/suite/v2/plugin_read.rs

@@ -172,6 +172,7 @@ async fn plugin_read_reads_remote_plugin_details_when_remote_plugin_enabled() ->
     "display_name": "Linear",
     "description": "Track work in Linear",
     "app_ids": [],
+    "keywords": ["issue-tracking", "project management"],
     "interface": {
       "short_description": "Plan and track work",
       "capabilities": ["Read", "Write"],
@@ -281,6 +282,13 @@ async fn plugin_read_reads_remote_plugin_details_when_remote_plugin_enabled() ->
         response.plugin.description.as_deref(),
         Some("Track work in Linear")
     );
+    assert_eq!(
+        response.plugin.summary.keywords,
+        vec![
+            "issue-tracking".to_string(),
+            "project management".to_string()
+        ]
+    );
     assert_eq!(response.plugin.skills.len(), 1);
     assert_eq!(response.plugin.skills[0].name, "plan-work");
     assert_eq!(response.plugin.skills[0].path, None);
@@ -580,6 +588,7 @@ async fn plugin_read_returns_plugin_details_with_bundle_contents() -> Result<()>
         r##"{
   "name": "demo-plugin",
   "description": "Longer manifest description",
+  "keywords": ["api-key", "developer tools"],
   "interface": {
     "displayName": "Plugin Display Name",
     "shortDescription": "Short description for subtitle",
@@ -740,6 +749,10 @@ enabled = true
             "Find my next action".to_string()
         ])
     );
+    assert_eq!(
+        response.plugin.summary.keywords,
+        vec!["api-key".to_string(), "developer tools".to_string()]
+    );
     assert_eq!(response.plugin.skills.len(), 1);
     assert_eq!(
         response.plugin.skills[0].name,

codex-rs/app-server/tests/suite/v2/plugin_share.rs

@@ -164,6 +164,7 @@ async fn plugin_share_save_uploads_local_plugin() -> Result<()> {
                     auth_policy: PluginAuthPolicy::OnUse,
                     availability: codex_app_server_protocol::PluginAvailability::Available,
                     interface: Some(expected_plugin_interface()),
+                    keywords: Vec::new(),
                 },
                 share_url: "https://chatgpt.example/plugins/share/share-key-1".to_string(),
                 local_plugin_path: Some(expected_plugin_path),
@@ -239,6 +240,7 @@ async fn plugin_share_list_returns_created_workspace_plugins() -> Result<()> {
                     auth_policy: PluginAuthPolicy::OnUse,
                     availability: codex_app_server_protocol::PluginAvailability::Available,
                     interface: Some(expected_plugin_interface()),
+                    keywords: Vec::new(),
                 },
                 share_url: "https://chatgpt.example/plugins/share/share-key-1".to_string(),
                 local_plugin_path: None,
@@ -342,6 +344,7 @@ async fn plugin_share_delete_removes_created_workspace_plugin() -> Result<()> {
                     auth_policy: PluginAuthPolicy::OnUse,
                     availability: codex_app_server_protocol::PluginAvailability::Available,
                     interface: Some(expected_plugin_interface()),
+                    keywords: Vec::new(),
                 },
                 share_url: "https://chatgpt.example/plugins/share/share-key-1".to_string(),
                 local_plugin_path: None,