Refactor and enhance SnapForm functionality

- Introduced MODEL_NUMBERS for better model indexing.
- Improved enum_items function to cache results and handle download status.
- Updated ActiveJob class to manage temporary input paths and added displacement_via property.
- Changed IMAGE_DEPTH_PROCESS_RES_METHOD from "lower_bound_resize" to "upper_bound_resize".
- Enhanced RunJob operator to include new properties and improved error messages.
- Modified panel layout for better user experience and added runtime installation checks.
- Updated SnapFormSettings to reflect new model properties and defaults.
- Added temporary input path management in runtime.
- Refined worker functions to improve error handling and messaging.
- Expanded tests to cover new functionality and ensure backward compatibility.
- Fixed packaging script to align with versioning conventions.

src/snapform/panel.py

@@ -1,6 +1,6 @@
 import bpy
 
-from .models import MODELS, selected_model_key
+from .models import MODELS
 from .operators import active_job
 from .runtime import model_ready, runtime_ready
 
@@ -18,13 +18,14 @@ class RuntimeModelsPanel(bpy.types.Panel):
 
         if not runtime_ready():
             layout.label(text="Runtime is not installed", icon="ERROR")
-            if not running:
-                operator = layout.operator(
-                    "snapform.run_job",
-                    text="Install Runtime",
-                    icon="IMPORT",
-                )
-                operator.job_type = "INSTALL_RUNTIME"
+            install_row = layout.row()
+            install_row.enabled = not running
+            operator = install_row.operator(
+                "snapform.run_job",
+                text="Install Runtime",
+                icon="IMPORT",
+            )
+            operator.job_type = "INSTALL_RUNTIME"
 
         for model in MODELS.values():
             self._draw_model(layout, model, running)
@@ -34,16 +35,16 @@ class RuntimeModelsPanel(bpy.types.Panel):
         row.label(text=model.label)
         if model_ready(model.key):
             row.label(text="Ready", icon="CHECKMARK")
-        elif runtime_ready() and not running:
-            operator = row.operator(
+        else:
+            download_row = row.row(align=True)
+            download_row.enabled = runtime_ready() and not running
+            operator = download_row.operator(
                 "snapform.run_job",
                 text="Download",
                 icon="IMPORT",
             )
             operator.job_type = "DOWNLOAD_MODEL"
             operator.model_key = model.key
-        else:
-            row.label(text="Not downloaded", icon="ERROR")
 
 
 class DebugPanel(bpy.types.Panel):
@@ -59,16 +60,10 @@ class DebugPanel(bpy.types.Panel):
         settings = context.scene.snapform_settings
 
         layout.prop(settings, "export_format")
-        model_key = selected_model_key(settings)
         model_property = (
             "gs_model" if settings.export_format == "gs_ply" else "model"
         )
-        model_row = layout.row(align=True)
-        model_row.prop(settings, model_property)
-        if model_ready(model_key):
-            model_row.label(text="", icon="CHECKMARK")
-        else:
-            model_row.label(text="", icon="ERROR")
+        layout.prop(settings, model_property)
 
         layout.prop(settings, "input_path")
         input_path = bpy.path.abspath(settings.input_path)
@@ -103,10 +98,11 @@ class DebugPanel(bpy.types.Panel):
             ply_box.label(text="PLY (3DGS) Settings")
             ply_box.prop(settings, "gs_views_interval")
 
-        if active_job() is None:
-            operator = layout.operator(
-                "snapform.run_job",
-                text="Export",
-                icon="EXPORT",
-            )
-            operator.job_type = "RECONSTRUCT"
+        export_row = layout.row()
+        export_row.enabled = active_job() is None
+        operator = export_row.operator(
+            "snapform.run_job",
+            text="Export",
+            icon="EXPORT",
+        )
+        operator.job_type = "RECONSTRUCT"