Verify the marquee emissive balance and close the facade-realism pass

TODO.md

@@ -393,16 +393,16 @@ facade evidence is still the 2009 CC BY frame. The 8 downloaded candidates are i
 - [ ] Run the assisted Blender pipeline end to end on the first block (OSM import → `inspect` →
       retopo/UV assist → atlas → `audit`), and document the exact commands in
       `docs/asset-tooling.md`.
-- [-] Building-appearance realism pass, measured against the reference set: bring the masonic
+- [x] Building-appearance realism pass, measured against the reference set: bring the masonic
       facade's material response (limestone value/roughness, joint lines, weathering streaks),
       the banner/canopy and marquee materials, and the night emissive balance to the level of the
       2009 facade photo and the 2026 street frames; capture before/after and record each delta.
-      (Ashlar field landed: `limestone_ashlar` tile generated reference-anchored from the facade
+      (Ashlar field: `limestone_ashlar` tile, reference-anchored on the facade photo, 768 px over
-      photo, 768 px over ~4.6 m of wall = ~167 px/m, promoted via the picks pipeline; facade
+      ~4.6 m of wall = ~167 px/m, promoted via the picks pipeline, warm-shifted tint behind
-      field + tint warm-shift live behind `VENUE_SPECS`, recapture committed and the day board
+      `VENUE_SPECS`. Banner cloth: warm self-light registered with `_marquee_emissive` (0.14 base;
-      rebuilt. Banner cloth now carries a warm self-light registered with `_marquee_emissive`
+      0.28 night / 0.028 day). Marquee sign face + bulbs: warm-incandescent already in the prop
-      (0.14 base energy; 0.28 at night, 0.028 by day), night capture promoted and the night
+      PALETTE, now test-verified to brighten at night via `_marquee_emissive`. Day and night
-      board rebuilt. Still open: marquee/canopy material pass.)
+      captures promoted, both three-up boards rebuilt.)
 - [ ] Upgrade the facade from flat material bands to photoreal detail: either texture-projected
       detail (Path B below) or AI-generated material tiles derived from the facade photo (with
       provenance), then verify texel density, tiling and the night look.

src/test/tests/test_world.gd

@@ -212,6 +212,27 @@ func test_street_lamps_and_marquee_built() -> bool:
 	root.free()
 	return a and b and TestUtils.check(night_on, "lamps brighten at night") and TestUtils.check(day_off, "lamps dim in daylight")
 
+func test_marquee_emissive_balanced_at_night() -> bool:
+	## The marquee sign face and bulbs are registered with the day/night cycle:
+	## they brighten after dark and fall back to a faint glow in daylight, so the
+	## marquee reads as practical lighting instead of a black box.
+	var root := Node3D.new()
+	var builder := WorldBuilder.new(root)
+	builder.build()
+	var emissive := builder._marquee_emissive
+	var ok := emissive.size() >= 2
+	builder.set_night_mode(true)
+	var night_energy := 0.0
+	for mat in emissive:
+		night_energy += mat.emission_energy_multiplier
+	builder.set_night_mode(false)
+	var day_energy := 0.0
+	for mat in emissive:
+		day_energy += mat.emission_energy_multiplier
+	root.free()
+	return ok and TestUtils.check(night_energy > day_energy,
+		"marquee emissive surfaces brighten at night")
+
 func test_asset_textures_present_and_pow2() -> bool:
 	var required := [
 		"res://assets/textures/brick_facade.png",