Extract per-venue geometry specs into WorldBuilder

Add the Hollywood, Joke Shop and TV Studio tables for facade, window,
stair, street, nav, guard-spawn and feature data. Unknown ids fall back to
the boulevard. Use the specs for the core dimensions and gates, with a headless
test for the distinct venue data. Headless 230/230.

MEMORY.md

@@ -246,6 +246,7 @@ Session memory for durable decisions, state, and gotchas. Keep concise, remove o
   helmet is lifted 2 cm above the brow. `test_npc_character` guards head/back gear in Godot.
   Blender's GLB export is byte-nondeterministic for unchanged assets (padding/index order), so do
   not commit a full no-op rebuild; rebuild only the assets whose geometry changed.
+- **Venue geometry (v0.6.1):** `WorldBuilder.VENUE_SPECS` is the per-venue table; `WorldBuilder.new(root, id)` / `set_venue()` select it, unknown ids fall back to `hollywood_building`. Dimensions, window/pilaster rows, stairs, street, nav bounds, guard spawn and feature flags are read from the spec. Joke Shop and TV Studio currently use empty `prop_placements`; bespoke alley/studio dressing and the `GameManager` rebuild-on-venue-switch are follow-ups.
 - **Portrait capture:** `capture_realism.gd` faces the **Rig** toward the camera (using the
   inverse look direction) and hides the blue `FocusCircle`; the old code used the wrong yaw and
   left the focus disc over the face. An explicit `--portrait-type=N` now overrides the hooded