fix(plugin-sdk): aligne le manifeste hello-plugin sur le schéma backend + fixture de test

Le manifeste hello-plugin était généré par un SDK obsolète/désaligné avec le
schéma backend actuel (champ ideaPluginManifestVersion manquant, displayName,
trustLevel, shape de contributes), ce qui faisait échouer l'installation avec
« invalid input: missing field ideaPluginManifestVersion ».

- SDK (manifest.ts/js, index.ts) aligné sur le schéma backend courant.
- hello-plugin (exemple + fixture) régénéré avec le manifeste valide.
- Base de tests fonctionnels plugins : fixture réelle versionnée
  (reference-minimal) + test d'installation/chargement bout en bout
  (plugin_install_load.rs), pour couvrir install/load/catalog depuis un
  dossier fixture réel.

Le sous-repo git imbriqué et vide (sdk/IdeaSDK/.git, 0 commit) a été
neutralisé pour que les sources du SDK soient suivies normalement dans ce
dépôt plutôt que comme gitlink vide.

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>

crates/infrastructure/tests/fixtures/plugins/reference-minimal/dist/index.js

@@ -0,0 +1,3 @@
+export function activate(ctx) {
+  ctx.commands?.registerCommand("dev.idea.fixtures.reference-minimal.hello", () => "hello");
+}

crates/infrastructure/tests/fixtures/plugins/reference-minimal/idea-plugin.json

@@ -0,0 +1,33 @@
+{
+  "ideaPluginManifestVersion": 1,
+  "id": "dev.idea.fixtures.reference-minimal",
+  "displayName": "Reference Minimal Plugin",
+  "publisher": "IdeA QA",
+  "version": "0.1.0",
+  "description": "Minimal fixture for the real plugin install/load loop.",
+  "engines": {
+    "idea": ">=0.1.0 <1.0.0"
+  },
+  "main": "dist/index.js",
+  "trustLevel": "full",
+  "capabilities": [
+    "ui"
+  ],
+  "contributes": {
+    "menus": [
+      {
+        "id": "dev.idea.fixtures.reference-minimal.menu",
+        "label": "Reference",
+        "topLevel": true
+      }
+    ],
+    "menuItems": [
+      {
+        "id": "dev.idea.fixtures.reference-minimal.hello.item",
+        "targetMenuId": "dev.idea.fixtures.reference-minimal.menu",
+        "label": "Say Hello",
+        "command": "dev.idea.fixtures.reference-minimal.hello"
+      }
+    ]
+  }
+}

crates/infrastructure/tests/plugin_install_load.rs

@@ -0,0 +1,92 @@
+use std::fs;
+use std::path::{Path, PathBuf};
+use std::sync::atomic::{AtomicU64, Ordering};
+use std::sync::Arc;
+
+use application::{
+    InstallPluginFromDirectory, JsonPluginManifestValidator, ListPluginRuntimeContributions,
+    ListPlugins,
+};
+use infrastructure::{
+    ExternalMcpPluginSupervisor, FsPluginPackageStore, FsPluginRegistryStore,
+    TokioBroadcastEventBus,
+};
+
+static TEMP_COUNTER: AtomicU64 = AtomicU64::new(0);
+
+fn temp_dir(label: &str) -> PathBuf {
+    let n = TEMP_COUNTER.fetch_add(1, Ordering::SeqCst);
+    let path = std::env::temp_dir().join(format!(
+        "idea-plugin-functional-{label}-{}-{n}",
+        std::process::id()
+    ));
+    let _ = fs::remove_dir_all(&path);
+    fs::create_dir_all(&path).unwrap();
+    path
+}
+
+fn fixture_path(name: &str) -> PathBuf {
+    Path::new(env!("CARGO_MANIFEST_DIR"))
+        .join("tests")
+        .join("fixtures")
+        .join("plugins")
+        .join(name)
+}
+
+#[tokio::test]
+async fn installs_reference_fixture_and_loads_runtime_catalog() {
+    let app_data = temp_dir("app-data");
+    let fixture = fixture_path("reference-minimal");
+    let packages = Arc::new(FsPluginPackageStore::new(&app_data));
+    let registry = Arc::new(FsPluginRegistryStore::new(&app_data));
+    let validator = Arc::new(JsonPluginManifestValidator::new("0.3.0"));
+    let events = Arc::new(TokioBroadcastEventBus::new());
+    let mcp = Arc::new(ExternalMcpPluginSupervisor::new());
+
+    let install = InstallPluginFromDirectory::new(
+        packages.clone(),
+        registry.clone(),
+        validator.clone(),
+        events,
+        mcp.clone(),
+    );
+    let result = install
+        .execute(fixture.to_string_lossy().into_owned())
+        .await
+        .unwrap();
+
+    assert_eq!(result.plugin.id, "dev.idea.fixtures.reference-minimal");
+    assert_eq!(result.plugin.display_name, "Reference Minimal Plugin");
+    assert_eq!(result.review.contribution_summary.top_level_menus, 1);
+    assert_eq!(result.review.contribution_summary.menu_items, 1);
+    assert!(result.restart_required);
+    assert!(app_data
+        .join("plugins/installed/dev.idea.fixtures.reference-minimal/idea-plugin.json")
+        .is_file());
+
+    let admin = ListPlugins::new(packages.clone(), registry.clone(), validator.clone())
+        .execute()
+        .await
+        .unwrap();
+    assert_eq!(admin.len(), 1);
+    assert_eq!(admin[0].id, "dev.idea.fixtures.reference-minimal");
+    assert_eq!(
+        admin[0].lifecycle_state,
+        domain::PluginLifecycleState::Enabled
+    );
+
+    let catalog = ListPluginRuntimeContributions::new(packages, registry, validator)
+        .execute()
+        .await
+        .unwrap();
+    assert_eq!(catalog.plugins.len(), 1);
+    let plugin = &catalog.plugins[0];
+    assert_eq!(plugin.id, "dev.idea.fixtures.reference-minimal");
+    assert!(plugin
+        .bundle_url
+        .starts_with("idea-plugin://dev.idea.fixtures.reference-minimal/0.1.0/"));
+    assert_eq!(plugin.contributes.menus.len(), 1);
+    assert_eq!(plugin.contributes.menu_items.len(), 1);
+
+    let _ = fs::remove_dir_all(app_data);
+}