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/atl.py

@@ -43,7 +43,7 @@ LEADING_ZERO = re.compile(r"(?<![\w.])0+(\d)(?![\d.]*[\w.])")
 SPLIT_SIGN = re.compile(r"^([a-z_]+)(-[\d.]+)$")
 IGNORED = {"subpixel", "animation", "around", "alignaround", "rotate_pad"}  # no visible effect in the browser
 # Purely graphical GPU hints; dropping them changes how a picture is drawn, never what happens
-COSMETIC = ("transform_anchor", "shader", "mesh", "gl_", "u_", "blend", "additive", "perspective", "point_to", "xrotate", "yrotate",
+COSMETIC = ("xpan", "ypan", "matrixtransform", "matrixanchor", "transform_anchor", "shader", "mesh", "gl_", "u_", "blend", "additive", "perspective", "point_to", "xrotate", "yrotate",
             "zrotate", "zpos", "zzoom", "delay", "events", "fit", "nearest", "fps", "show_cancels_hide")
 NAMED_POSITIONS = {
     "left": {"xpos": 0.0, "xanchor": 0.0}, "right": {"xpos": 1.0, "xanchor": 1.0},
@@ -274,6 +274,9 @@ class AtlParser:
                         break
                 glued = [parts[0][at + 1:]] if parts[0][at + 1:] else []  # `ease(0.1)rotate 5`
                 parts = [called[1], parts[0][called.end():at], *glued, *parts[1:]]
+            if glued_call := re.fullmatch(r"([a-z_]+)(\(.*\))([a-z_]+)", parts[0]):  # `crop(1,2,3,4)xpos 5`
+                if glued_call[1] in POSITION_PROPS:
+                    parts = [glued_call[1], glued_call[2], glued_call[3], *parts[1:]]
             if len(parts) > 1 and (WARPER.match(parts[0]) or parts[0] == "pause") and parts[1].startswith("("):
                 parts = [parts[0], *self.split_bracket(parts[1]), *parts[2:]]  # `ease (0.1)xpos 0.5`
             first = parts[0]