feat(plugins): load activation scope from plugin manifest

Plugins can now declare activationScope ("app" | "project") in their
manifest; loader/runtime honor it to defer activation of project-scoped
plugins until a project is focused instead of activating everything at
app bootstrap. Bumps sdk/IdeaSDK to the commit that adds the field.

Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>

crates/application/src/plugin/mod.rs

@@ -153,6 +153,8 @@ pub struct PluginRuntimePlugin {
     pub content_hash: String,
     /// Public manifest capabilities.
     pub capabilities: Vec<domain::PluginCapability>,
+    /// Manifest-declared activation scope.
+    pub activation_scope: domain::PluginActivationScope,
     /// Contributions.
     pub contributes: PluginContributionSet,
 }
@@ -2207,6 +2209,7 @@ impl ListPlugins {
                         icon: None,
                         trust_level: PluginTrustLevel::Full,
                         capabilities: Vec::new(),
+                        activation_scope: domain::PluginActivationScope::default(),
                         contributes: PluginContributionSet::default(),
                     };
                     out.push(admin_from_descriptor(
@@ -2793,6 +2796,7 @@ async fn runtime_plugin_from_entry(
         icon_url,
         content_hash: descriptor.registry.content_hash.as_str().to_owned(),
         capabilities: descriptor.manifest.capabilities,
+        activation_scope: descriptor.manifest.activation_scope,
         contributes: descriptor.manifest.contributes,
     })
 }
@@ -3006,6 +3010,8 @@ struct RawManifest {
     trust_level: String,
     #[serde(default)]
     capabilities: Vec<String>,
+    #[serde(default)]
+    activation_scope: domain::PluginActivationScope,
     contributes: RawContributes,
 }
 
@@ -3158,6 +3164,7 @@ impl PluginManifestValidator for JsonPluginManifestValidator {
             icon,
             trust_level: PluginTrustLevel::Full,
             capabilities,
+            activation_scope: raw.activation_scope,
             contributes,
         })
     }