feat(sdk,plugins): ajoute capability tooling et services runtime publics (workspace/terminal/tasks)

- capability manifeste tooling supportée backend + transport runtime catalog
- ctx.services publique côté SDK/runtime, gated par tooling
- surface honnête: workspace, terminal, et tasks en observation/contrôle uniquement
- docs/exemple/tests mis à jour
- QA PASS sur feature/sdk-plugin-tooling-build-debug-surface

sdk/IdeaSDK/examples/hello-plugin/README.md

@@ -8,6 +8,7 @@ It exercises the current plugin primitives end to end:
 - menu entry: `hello-plugin`;
 - command: `hello-plugin`, returning `hello-world`;
 - layout contribution: `hello-plugin.hello-world`, rendered as `hello-world`.
+- tooling capability: logs the focused workspace project when `ctx.services` is available.
 
 ```sh
 npm run typecheck:examples
@@ -25,6 +26,7 @@ During activation the plugin logs:
 - whether the command and layout runtime registries are available;
 - successful registration of the `hello-plugin` command;
 - successful registration of the `hello-plugin.hello-world` layout;
+- availability of the workspace service from the `tooling` runtime capability;
 - the first layout render, including project/node identifiers.
 
 These messages are intentionally small and stable so installation, bundle import, activation and

sdk/IdeaSDK/examples/hello-plugin/idea-plugin.json

@@ -11,7 +11,8 @@
   },
   "trustLevel": "full",
   "capabilities": [
-    "ui"
+    "ui",
+    "tooling"
   ],
   "contributes": {
     "menus": [

sdk/IdeaSDK/examples/hello-plugin/src/index.ts

@@ -71,6 +71,13 @@ export function activate(ctx: ActivateContext): void {
   } else {
     ctx.logger.warn("layout registry unavailable", { layoutType: LAYOUT_TYPE });
   }
+
+  void ctx.services?.workspace.getCurrentProject().then((project) => {
+    ctx.logger.info("workspace service available", {
+      projectId: project?.id ?? null,
+      hasProjectRoot: Boolean(project?.root)
+    });
+  });
 }
 
 const plugin: IdeAPluginModule = {