feat(plugins): paramètres projet plugins + attribution skills/tools aux agents — #282 (manifeste accepte contributes.skills IdeA-native multi-harness; store .ideai/project-plugins.json v1: enable plugin par projet + assignments skills/tools par agent; refs + use cases settings/assign/unassign; resolver skills pour idea_skill_read et injection catalogue lancement agent; permissions MCP dynamiques projetées par harness Claude Code/Codex/OpenCode; tombstones uninstall, hot reload recalcule catalogue et marque assignments cassés; frontend: Settings projet Plugins, détail capabilities, attribution agent, catalogue permissions; bump pointeur IdeaSDK 6eb8db3; QA verte: cargo test -p application, project_plugin_settings 3/3, dto_plugins 2/2, structured_launch_d3 26/26, catalogue mcp 7/7, frontend 5 tests ProjectPluginSettings/plugin, npm build frontend)

crates/infrastructure/tests/project_plugin_settings.rs

@@ -0,0 +1,84 @@
+use std::path::PathBuf;
+use std::sync::Arc;
+
+use domain::{
+    AgentId, AgentPluginAssignments, FileSystem, PluginId, PluginSkillId, PluginSkillRef,
+    ProjectPath, ProjectPluginActivation, ProjectPluginSettings, ProjectPluginSettingsStore,
+};
+use infrastructure::{FsProjectPluginSettingsStore, LocalFileSystem};
+use uuid::Uuid;
+
+struct TempDir(PathBuf);
+
+impl TempDir {
+    fn new() -> Self {
+        let path = std::env::temp_dir().join(format!("idea-project-plugins-{}", Uuid::new_v4()));
+        std::fs::create_dir_all(&path).unwrap();
+        Self(path)
+    }
+
+    fn root(&self) -> ProjectPath {
+        ProjectPath::new(self.0.to_string_lossy().into_owned()).unwrap()
+    }
+}
+
+impl Drop for TempDir {
+    fn drop(&mut self) {
+        let _ = std::fs::remove_dir_all(&self.0);
+    }
+}
+
+fn store() -> FsProjectPluginSettingsStore {
+    let fs: Arc<dyn FileSystem> = Arc::new(LocalFileSystem::new());
+    FsProjectPluginSettingsStore::new(fs)
+}
+
+#[tokio::test]
+async fn missing_document_returns_version_one_defaults() {
+    let tmp = TempDir::new();
+    let settings = store().load(&tmp.root()).await.unwrap();
+    assert_eq!(settings, ProjectPluginSettings::default());
+}
+
+#[tokio::test]
+async fn settings_round_trip_under_project_ideai_directory() {
+    let tmp = TempDir::new();
+    let plugin_id = PluginId::new("dev.acme.tools").unwrap();
+    let agent_id = AgentId::from_uuid(Uuid::from_u128(42));
+    let settings = ProjectPluginSettings {
+        version: 1,
+        plugins: vec![ProjectPluginActivation {
+            plugin_id: plugin_id.clone(),
+            enabled: true,
+        }],
+        agents: vec![AgentPluginAssignments {
+            agent_id,
+            skills: vec![PluginSkillRef {
+                plugin_id,
+                skill_id: PluginSkillId::new("build-debug").unwrap(),
+            }],
+            tools: Vec::new(),
+        }],
+    };
+
+    store().save(&tmp.root(), &settings).await.unwrap();
+
+    assert_eq!(store().load(&tmp.root()).await.unwrap(), settings);
+    assert!(tmp.0.join(".ideai/project-plugins.json").is_file());
+}
+
+#[tokio::test]
+async fn unsupported_document_version_is_rejected() {
+    let tmp = TempDir::new();
+    std::fs::create_dir_all(tmp.0.join(".ideai")).unwrap();
+    std::fs::write(
+        tmp.0.join(".ideai/project-plugins.json"),
+        br#"{"version":2,"plugins":[],"agents":[]}"#,
+    )
+    .unwrap();
+
+    let error = store().load(&tmp.root()).await.unwrap_err();
+    assert!(error
+        .to_string()
+        .contains("unsupported project plugin settings version 2"));
+}