feat(erase-object): optional high-quality diffusion inpainting bundle (#566)

Adds an opt-in High Quality mode to the Object Eraser, backed by a new inpaint-hq feature bundle (Stable Diffusion 1.5 inpainting via diffusers). The default fast LaMa path is unchanged. Both arch archives are published to deepsafe/feature-bundles and the manifest carries their real sha256/sizes.

Verified end to end: a fresh container pulls the bundle from HuggingFace, checksum-verifies it, extracts torch/diffusers plus the fp16 model, and the HQ sidecar erases a large object with a plausible fill.

Refs #141

tests/e2e-docker/features.spec.ts

@@ -48,12 +48,13 @@ test.describe("Feature API", () => {
     });
     expect(response.ok()).toBeTruthy();
     const data = (await response.json()) as { bundles: BundleInfo[] };
-    expect(data.bundles).toHaveLength(7);
+    expect(data.bundles).toHaveLength(8);
 
     const expectedBundles = [
       "background-removal",
       "face-detection",
       "object-eraser-colorize",
+      "inpaint-hq",
       "upscale-enhance",
       "photo-restoration",
       "ocr",