Kit Manager: detect unsupported kits via platform database

Scan sedona/platforms/db/ to find which native kits are compiled for
the SAX's platform.  Kits with native code for other platforms, kits
providing a PlatformService for a different device, and their
transitive dependents are placed in a "Not supported" section with a
red-cross checkbox that cannot be toggled.

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

manage_kits.py

@@ -37,8 +37,14 @@ TICK_BLOCKS = [
     (2, 5), (3, 6), (4, 7), (5, 6), (6, 5), (7, 4), (8, 3), (9, 2),
 ]
 
+# The cross (X), as filled 2x2 blocks: two diagonal strokes.
+CROSS_BLOCKS = [
+    (2, 2), (3, 3), (4, 4), (5, 5), (6, 6), (7, 7), (8, 8), (9, 9),
+    (9, 2), (8, 3), (7, 4), (6, 5), (5, 6), (4, 7), (3, 8), (2, 9),
+]
 
-def make_checkbox_image(checked, enabled):
+
+def make_checkbox_image(checked, enabled, cross=False):
     """A checkbox drawn pixel by pixel, so a locked tick can be greyed out.
 
     Tk has no disabled state for a cell, and a row tag would grey the whole row including
@@ -56,7 +62,10 @@ def make_checkbox_image(checked, enabled):
     image.put(border, to=(0, 0, 1, CHECKBOX_SIZE))
     image.put(border, to=(CHECKBOX_SIZE - 1, 0, CHECKBOX_SIZE, CHECKBOX_SIZE))
 
-    if checked:
+    if cross:
+        for x, y in CROSS_BLOCKS:
+            image.put("#b04040", to=(x, y, x + 2, y + 2))
+    elif checked:
         for x, y in TICK_BLOCKS:
             image.put(ink, to=(x, y, x + 2, y + 2))
 
@@ -134,6 +143,10 @@ def collect_rows():
     # clearest place to see that the file points at something missing.
     others = [name for name in installed if name not in declared_names]
 
+    bad = palette.unsupported_kits()
+    compatible = [name for name in others if name not in bad]
+    incompatible = [name for name in others if name in bad]
+
     groups = [
         ("Installed kits", [
             (name, checksum) for name, checksum in declared if name in required
@@ -141,7 +154,8 @@ def collect_rows():
         ("Installed but not used kits", [
             (name, checksum) for name, checksum in declared if name not in required
         ]),
-        ("Kits available on the computer", [(name, None) for name in others]),
+        ("Kits available on the computer", [(name, None) for name in compatible]),
+        ("Not supported", [(name, None) for name in incompatible]),
     ]
 
     rows = []
@@ -153,6 +167,7 @@ def collect_rows():
             builds = palette.kit_builds(name)
             latest = builds[0] if builds else None
             is_declared = name in declared_names
+            is_unsupported = name in bad
             options = action_options(name, checksum, is_declared, builds)
 
             if not is_declared:
@@ -168,6 +183,7 @@ def collect_rows():
                 "kit": name,
                 "declared": is_declared,
                 "required": name in required,
+                "unsupported": is_unsupported,
                 "checksum": checksum,
                 "builds": builds,
                 "latest": latest,
@@ -175,7 +191,6 @@ def collect_rows():
                 "latest_text": column_label(*latest) if latest else NOT_DECLARED,
                 "options": options,
                 "choice": 0,
-                # The tick reflects the file as it stands: declared kits start ticked.
                 "checked": is_declared,
             })
     return rows
@@ -248,6 +263,7 @@ class KitsPanel:
             (True, False): make_checkbox_image(True, False),
             (False, False): make_checkbox_image(False, False),
         }
+        self.cross_box = make_checkbox_image(False, False, cross=True)
 
         hint = ttk.Label(
             self.frame,
@@ -370,6 +386,8 @@ class KitsPanel:
         return (row["kit"], row["installed_text"], row["latest_text"], self._action_text(row))
 
     def _row_image(self, row):
+        if row.get("unsupported"):
+            return self.cross_box
         return self.boxes[(row["checked"], not row["required"])]
 
     def _rebuild_table(self):
@@ -403,7 +421,7 @@ class KitsPanel:
 
     def _toggle_check(self, item):
         row = self.row_by_item[item]
-        if row["required"]:
+        if row["required"] or row.get("unsupported"):
             return
 
         row["checked"] = not row["checked"]
@@ -420,6 +438,8 @@ class KitsPanel:
 
     def _edit_action(self, item):
         row = self.row_by_item[item]
+        if row.get("unsupported"):
+            return
         cell = self.table.bbox(item, "action")
         if not cell:
             return