fix(client): TagExtractor tolerates paren-less moves + scrubs misformatted move tags (live-review LF1/LF2)

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>

client/tests/unit/test_tag_extractor.gd

@@ -38,3 +38,45 @@ func test_no_tags_is_clean_passthrough():
 	assert_eq(r["dispositions"], [])
 	assert_eq(r["moves"], [])
 	assert_eq(r["clean_text"], "no tags here")
+
+
+# LF1 — a live model emitted [MOVE: refuse] with no parens at all. The move
+# must still be recognized so the legal move isn't silently dropped.
+func test_move_without_parens_is_parsed():
+	var r := TagExtractor.extract("[MOVE: refuse]")
+	assert_eq(r["moves"][0]["name"], "refuse")
+	assert_eq(r["moves"][0]["args"], [])
+
+
+# LF1 regression guard — explicit empty parens must still work as before.
+func test_move_with_explicit_empty_parens_still_parsed():
+	var r := TagExtractor.extract("[MOVE: end_conversation()]")
+	assert_eq(r["moves"][0]["name"], "end_conversation")
+	assert_eq(r["moves"][0]["args"], [])
+
+
+# LF1 regression guard — well-formed args must still parse unchanged.
+func test_move_with_args_still_parsed():
+	var r := TagExtractor.extract("[MOVE: reveal(varrell_twins)]")
+	assert_eq(r["moves"][0]["name"], "reveal")
+	assert_eq(r["moves"][0]["args"], ["varrell_twins"])
+
+
+# LF2 — a live model emitted [adjust_disposition(-5)] without the MOVE:
+# prefix. It must not be parsed/applied (untrusted, malformed), but it must
+# also not leak into player-visible prose as literal tag text.
+func test_bare_lowercase_move_shape_is_scrubbed_not_parsed():
+	var r := TagExtractor.extract("He glares. [adjust_disposition(-5)] Fine.")
+	assert_false(r["clean_text"].contains("[adjust_disposition(-5)]"))
+	assert_eq(r["moves"], [])
+	assert_eq(r["dispositions"], [])
+
+
+# LF2 regression guard — a well-formed MOVE tag alongside a bare lowercase
+# shape in the same prose must still be parsed and stripped correctly.
+func test_wellformed_move_still_parsed_alongside_bare_lowercase_shape():
+	var r := TagExtractor.extract("[MOVE: reveal(x)] He glares. [adjust_disposition(-5)] Fine.")
+	assert_eq(r["moves"][0]["name"], "reveal")
+	assert_eq(r["moves"][0]["args"], ["x"])
+	assert_false(r["clean_text"].contains("[MOVE:"))
+	assert_false(r["clean_text"].contains("[adjust_disposition(-5)]"))