Visual polish pass (v0.2.0): phase lighting, street lamps, marquee, dressing, night screenshots

- Phase-based lighting: sun direction/energy/color, ProceduralSkyMaterial
  gradient, and ambient per shift phase (GameManager.PHASE_LIGHTING),
  applied on phase transitions and shift start
- WorldBuilder: street lamp poles with emissive bulbs + OmniLights,
  set_night_mode(), glowing STEP LINE marquee (Label3D + emissive bars),
  crosswalk stripes, planters, low-poly street trees
- NPC avatars: per-seed height/brightness variation (deterministic LCG)
- Denser routine traffic probabilities
- capture_screenshots.gd: fast-forward to LATE phase and capture night set;
  README gallery is now 2x3 day+night; docs/screenshots regenerated
- Version bumped to 0.2.0; build/ artifacts rebuilt; Linux binary smoke-tested
- New headless tests for phased lighting config and street dressing (56 total)

src/test/capture_screenshots.gd

@@ -1,10 +1,11 @@
 extends SceneTree
 ## Dev helper: run the game windowed and capture staged screenshots for the
-## README. Saves 1600x900 PNGs to user://screenshots/.
+## README (day set + LATE-night set with street lamps and flashlight).
+## Saves 1280x720 PNGs to user://screenshots/.
 ## Usage: godot --path . --script res://src/test/capture_screenshots.gd
 
 const OUT_DIR := "user://screenshots"
-const MAX_FRAMES := 2400 # hard cap (~40s)
+const MAX_FRAMES := 3600 # hard cap (~60s)
 
 var frames := 0
 var gm: Node = null
@@ -39,7 +40,7 @@ func _advance() -> void:
 	state_frames += 1
 	match state:
 		0:
-			# 2s overview from the guard post.
+			# 2s overview from the guard post (early morning light).
 			if state_frames >= 120:
 				_shoot("01-venue-overview.png")
 				state = 1
@@ -52,7 +53,6 @@ func _advance() -> void:
 				state = 2
 				state_frames = 0
 		2:
-			# Give the HUD a moment, then shoot the interaction shot.
 			if state_frames >= 30:
 				_shoot("02-targeting-npc.png")
 				if targeted and gm != null:
@@ -64,7 +64,6 @@ func _advance() -> void:
 				_shoot("03-access-inspection.png")
 				if gm != null:
 					gm.hud.hide_inspection()
-					# Re-target (target may have moved) before opening the radio form.
 					if gm.npcs.size() > 0:
 						gm.call("_cycle_nearby_target")
 						gm.call("_open_radio", false)
@@ -73,7 +72,25 @@ func _advance() -> void:
 		4:
 			if state_frames >= 30:
 				_shoot("04-radio-report.png")
+				# Close the radio form, then jump the shift to the LATE phase.
+				if gm != null:
+					gm.radio_panel.hide()
+					gm.coordinator.elapsed_s = 750.0
 				state = 5
+				state_frames = 0
+		5:
+			# Let the phase transition (and street lamps / marquee) settle, then
+			# take the night avenue shot.
+			if state_frames >= 90:
+				_shoot("05-late-night-avenue.png")
+				if gm != null:
+					gm.call("_toggle_flashlight")
+				state = 6
+				state_frames = 0
+		6:
+			if state_frames >= 40:
+				_shoot("06-night-flashlight.png")
+				state = 7
 				quit(0)
 
 func _shoot(file_name: String) -> void: