Add comprehensive documentation for SnapForm extension

- Created development.md for development setup and licensing information.
- Added features.md detailing functionalities and usage instructions for developers and users.
- Introduced index.md to serve as a navigation hub for the documentation.
- Developed outputs.md to explain output formats and their specifications.
- Established service.md to describe the AI Service architecture and environment setup.
- Created surface.md to outline the process of converting Image Empty to perspective meshes.

tests/test_worker.py

@@ -1365,14 +1365,23 @@ class WorkerTest(unittest.TestCase):
                 self.assertNotIn("postprocess_method", result.files)
                 self.assertEqual(result["point_depth"].shape, (9,))
                 self.assertEqual(
-                    result["point_confidence_percentile"].shape,
-                    (9,),
-                )
-                self.assertEqual(
-                    result["face_edge_stretch"].shape,
+                    result["face_confidence_percentile"].shape,
                     (8,),
                 )
-                self.assertEqual(result["face_background"].shape, (8,))
+                self.assertEqual(
+                    set(result.files),
+                    {
+                        "vertices",
+                        "faces",
+                        "uv",
+                        "intrinsics",
+                        "image_size",
+                        "reference_depth",
+                        "point_depth",
+                        "face_confidence_percentile",
+                        "face_depth_discontinuity",
+                    },
+                )
                 np.testing.assert_allclose(result["uv"][0], [0.0, 1.0])
                 np.testing.assert_allclose(result["uv"][-1], [1.0, 0.0])
             self.assertTrue(texture_path.is_file())