Tighten LM Studio title-boundary prompt

tools/rust_dmhy_template_apply/src/main.rs

@@ -1338,10 +1338,11 @@ fn title_boundary_review_prompt(recipe: &Value, decision: &Value) -> String {
     let payload = json!({
         "task": "Independently classify whether two adjacent TITLE slots in an anime filename template should be one logical title span or kept separate.",
         "rules": [
-            "Choose merge only when the two slots are contiguous parts of the same title/subtitle phrase.",
-            "Choose keep when slots are duplicate titles, path/leaf repeats, multilingual aliases, category tags plus title, or distinct title candidates.",
-            "Choose skip when examples/top literals are mixed or insufficient.",
-            "Do not infer from any heuristic decision; use examples and position literals."
+            "Choose merge only when concrete examples or left/right top literals show the two slots are contiguous words of the same title/subtitle phrase.",
+            "Do not choose merge merely because the slots are adjacent or separated only by SEP/O; adjacency alone is not evidence.",
+            "Choose keep when slots are duplicate titles, path/leaf repeats, multilingual aliases, category tags plus title, release group plus title, or distinct title candidates.",
+            "Choose skip when examples/top literals are mixed, insufficient, contradictory, or you cannot cite a concrete left/right title-word pairing.",
+            "Use literal_similarity only as a clue, not as the answer. Do not infer from any heuristic decision."
         ],
         "allowed_decisions": {
             "merge": "same title continuation; use one logical title span",