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+      "domain": "her_trees_letter_color",
+      "difficulty": "hard",
+      "case": "case_hard_024",
+      "seed": 20260809200023,
+      "target_value": "CSCT",
+      "files": {
+        "puzzle": "validation/case_hard_024/puzzle.png",
+        "assembled": "validation/case_hard_024/assembled.png",
+        "ground_truth": "validation/case_hard_024/ground_truth.png",
+        "solve_mp4": "validation/case_hard_024/solve.mp4",
+        "solve_gif": null
+      },
+      "genome": {
+        "target_type": "letter",
+        "target_value": "CSCT",
+        "embedding_method": "structural",
+        "num_pieces": 7,
+        "piece_complexity": 0.95,
+        "num_distractors": 3,
+        "style": "monochrome",
+        "letter_spacing": 0.08,
+        "link_ratio": 0.0,
+        "num_link_groups": 1,
+        "color_by_unit": true,
+        "scene_complexity": 0.5,
+        "affordance_obviousness": 0.12,
+        "goal_explicitness": 0.0,
+        "canvas_width": 832,
+        "canvas_height": 480,
+        "seed": 20260809200023
+      },
+      "metadata": {
+        "target_value": "CSCT",
+        "num_pieces": 8,
+        "num_distractors": 3,
+        "link_ratio": 0.0,
+        "num_link_groups": 1,
+        "num_linked_pieces": 0,
+        "color_rule": "one_color_per_letter_position",
+        "rigid_same_color_groups": false,
+        "requested_num_pieces": 7,
+        "minimum_fragments_per_letter": 2,
+        "static_resolution": [
+          832,
+          480
+        ],
+        "panel_frame": false,
+        "letter_colors": [
+          {
+            "index": 0,
+            "letter": "C",
+            "rgb": [
+              140,
+              55,
+              45
+            ]
+          },
+          {
+            "index": 1,
+            "letter": "S",
+            "rgb": [
+              45,
+              95,
+              70
+            ]
+          },
+          {
+            "index": 2,
+            "letter": "C",
+            "rgb": [
+              55,
+              60,
+              130
+            ]
+          },
+          {
+            "index": 3,
+            "letter": "T",
+            "rgb": [
+              160,
+              110,
+              35
+            ]
+          }
+        ]
+      }
+    },
+    {
+      "task": "task2_simple",
+      "domain": "her_trees_letter_color",
+      "difficulty": "hard",
+      "case": "case_hard_025",
+      "seed": 20260809200024,
+      "target_value": "WYAS",
+      "files": {
+        "puzzle": "validation/case_hard_025/puzzle.png",
+        "assembled": "validation/case_hard_025/assembled.png",
+        "ground_truth": "validation/case_hard_025/ground_truth.png",
+        "solve_mp4": "validation/case_hard_025/solve.mp4",
+        "solve_gif": null
+      },
+      "genome": {
+        "target_type": "letter",
+        "target_value": "WYAS",
+        "embedding_method": "structural",
+        "num_pieces": 7,
+        "piece_complexity": 0.95,
+        "num_distractors": 3,
+        "style": "monochrome",
+        "letter_spacing": 0.08,
+        "link_ratio": 0.0,
+        "num_link_groups": 1,
+        "color_by_unit": true,
+        "scene_complexity": 0.5,
+        "affordance_obviousness": 0.12,
+        "goal_explicitness": 0.0,
+        "canvas_width": 832,
+        "canvas_height": 480,
+        "seed": 20260809200024
+      },
+      "metadata": {
+        "target_value": "WYAS",
+        "num_pieces": 8,
+        "num_distractors": 3,
+        "link_ratio": 0.0,
+        "num_link_groups": 1,
+        "num_linked_pieces": 0,
+        "color_rule": "one_color_per_letter_position",
+        "rigid_same_color_groups": false,
+        "requested_num_pieces": 7,
+        "minimum_fragments_per_letter": 2,
+        "static_resolution": [
+          832,
+          480
+        ],
+        "panel_frame": false,
+        "letter_colors": [
+          {
+            "index": 0,
+            "letter": "W",
+            "rgb": [
+              140,
+              55,
+              45
+            ]
+          },
+          {
+            "index": 1,
+            "letter": "Y",
+            "rgb": [
+              45,
+              95,
+              70
+            ]
+          },
+          {
+            "index": 2,
+            "letter": "A",
+            "rgb": [
+              55,
+              60,
+              130
+            ]
+          },
+          {
+            "index": 3,
+            "letter": "S",
+            "rgb": [
+              160,
+              110,
+              35
+            ]
+          }
+        ]
+      }
+    }
+  ]
+}
\ No newline at end of file
diff --git a/validation/validation_report.json b/validation/validation_report.json
new file mode 100644
index 0000000000000000000000000000000000000000..e28e730b4d704f7cfb737367eece0d2085d9cecb
--- /dev/null
+++ b/validation/validation_report.json
@@ -0,0 +1,16 @@
+{
+  "status": "PASS",
+  "cases": 75,
+  "counts": {
+    "easy": 25,
+    "medium": 25,
+    "hard": 25
+  },
+  "unique_seeds": 75,
+  "color_rule": "one_color_per_letter_position",
+  "media_samples_checked": {
+    "easy": 25,
+    "medium": 25,
+    "hard": 25
+  }
+}
\ No newline at end of file
diff --git a/validation_report.json b/validation_report.json
new file mode 100644
index 0000000000000000000000000000000000000000..561646ba33449a62daaa8a2dbcd6a58fd81853a9
--- /dev/null
+++ b/validation_report.json
@@ -0,0 +1,16 @@
+{
+  "status": "PASS",
+  "cases": 3000,
+  "counts": {
+    "easy": 1000,
+    "medium": 1000,
+    "hard": 1000
+  },
+  "unique_seeds": 3000,
+  "color_rule": "one_color_per_letter_position",
+  "media_samples_checked": {
+    "easy": 20,
+    "medium": 20,
+    "hard": 20
+  }
+}
\ No newline at end of file