Add positive import image automation

docs/modernization/build-inventory.md

@@ -100,7 +100,8 @@ Known local toolchain state:
   `pano_cli_inspect_png_metadata_smoke` with a tiny IHDR fixture.
 - `pano_cli import-image` accepts a PNG path, decodes RGBA8 pixels through
   `pp_assets`, attaches them to a pure `pp_document` face payload, and is
-  covered for metadata-valid truncated PNG rejection by
+  covered for checked-in decodable PNG import by `pano_cli_import_image_smoke`
+  and metadata-valid truncated PNG rejection by
   `pano_cli_import_image_rejects_truncated_png`.
 - `pano_cli inspect-project` reports validated PPI thumbnail/body byte layout,
   body summary fields, layer/frame descriptors, and dirty-face PNG payload
@@ -273,8 +274,9 @@ Known local toolchain state:
   `pano_cli_simulate_image_import_smoke`.
 - `pano_cli import-image` exposes file-driven PNG decode and document
   face-payload attachment through JSON automation and is covered by
-  `pano_cli_import_image_rejects_truncated_png`; a checked-in decodable image
-  fixture and export/round-trip automation remain future CLI tasks.
+  `pano_cli_import_image_smoke` and
+  `pano_cli_import_image_rejects_truncated_png`; export/round-trip automation
+  remains a future CLI task.
 - `pano_cli save-project` exposes generated multi-layer, multi-frame PPI writing through JSON
   automation and is covered by metadata-only and dirty-face-payload round-trip
   smoke tests; full legacy canvas save parity remains tracked by