feat: build profile for The Lewdest House; panoramas as GPU hints, live2d-only init branches, drag/at syntax

The build (fingerprint of its scripts) skips third-party code written against Ren'Py's render API
(colour picker demo, Kinetic Text Tags, cps_preview) and waives its one missing test screen. Converter:
xpan/ypan/matrixtransform/matrixanchor are skipped like other GPU hints, `if renpy.has_live2d()` in an
init block keeps only its else branch, `crop(...)xpos` and `crop (1, 2, 3, 4)` parse, `drag` is a screen
container, `at icon["at"]` becomes a dynamic entry, and the whitelist gains Matrix, Move, absolute and
the no-op helpers. The game now passes the strict check and converts fully (3272 files, 288 MB).

Co-Authored-By: Claude Sonnet 5.5 <noreply@anthropic.com>

backend/app/converter/rpy_helpers.py

@@ -81,7 +81,7 @@ def _static_props(kw: dict[str, Expr]) -> dict[str, Any]:
 
 def _atl_props(text: str) -> dict[str, Any]:
     """Extract static `prop value` pairs from one ATL line, ignoring timing."""
-    tokens = text.replace(",", " ").split()
+    tokens = _words(text)
     props: dict[str, Any] = {}
     i = 0
     while i < len(tokens) - 1:
@@ -89,11 +89,12 @@ def _atl_props(text: str) -> dict[str, Any]:
         if key in POSITION_PROPS:
             raw = tokens[i + 1]
             try:
-                props[key] = ast.literal_eval(raw)
+                value = ast.literal_eval(raw)
+                props[key] = list(value) if isinstance(value, tuple) else value
             except (ValueError, SyntaxError):
-                if raw.startswith("(") and i + 2 < len(tokens):
+                if not raw.startswith("(") and i + 2 < len(tokens):  # `pos 0.5 0.3`
                     try:
-                        props[key] = list(ast.literal_eval(raw + "," + tokens[i + 2]))
+                        props[key] = [ast.literal_eval(raw), ast.literal_eval(tokens[i + 2])]
                         i += 1
                     except (ValueError, SyntaxError):
                         pass
@@ -103,6 +104,25 @@ def _atl_props(text: str) -> dict[str, Any]:
     return props
 
 
+def _words(text: str) -> list[str]:
+    """Words split on whitespace and commas outside brackets: `crop (1, 2, 3, 4)` keeps its tuple whole."""
+    out, cur, depth = [], [], 0
+    for ch in text:
+        if ch in "([{":
+            depth += 1
+        elif ch in ")]}":
+            depth -= 1
+        if (ch.isspace() or ch == ",") and depth == 0:
+            if cur:
+                out.append("".join(cur))
+                cur = []
+        else:
+            cur.append(ch)
+    if cur:
+        out.append("".join(cur))
+    return out
+
+
 def _split_top(source: str) -> list[str]:
     parts, depth, cur = [], 0, []
     for ch in source: