Capture the wand panel, escalation HUD and body-camera timeline

The three newest catalogue screens had AI mockups but no staged capture, so
compare and judge skipped them. capture_screenshots.gd now continues past the
night set:

- switches to The Joke Shop at 620 s (EVENING still has routine spawns), frames a
  guest, and retries the wand until it alerts; if nobody carries an alerting item
  it stages the documented keys false-alarm case.
- applies a formal warning (arms the body camera) then blocking, jumps to 760 s
  for night lighting, and captures the HUD at L3.
- closes the open incident and opens the body-camera timeline, which now shows
  the warning / body-camera / blocking rows.

Wired the refs for wand_screening, escalation_hud and body_camera_timeline, and
regenerated the escalation mockup as a third-person over-the-shoulder night shot
so the reference matches the game camera. Added Hud.clear_log() to drop
target-cycling noise from staged shots. README gallery lists the three captures.

Verification: headless 182/182, Python tooling 53/53, compare 9 good / 0 bad,
judge: wand match 0.90, timeline match 1.00, escalation review, 0 diff.
Version 0.3.3.

src/game/ui/hud.gd

@@ -402,6 +402,12 @@ func set_escalation(level: int) -> void:
 	if vignette_rect:
 		vignette_rect.modulate = Color(tint.r, tint.g, tint.b, 0.05 + 0.2 * float(level) / 5.0)
 
+## Dev helper: drop queued log lines so a staged screenshot shows only the
+## lines that belong to the moment.
+func clear_log() -> void:
+	_log_lines.clear()
+	log_label.text = ""
+
 func log(text: String) -> void:
 	_log_lines.append(text)
 	if _log_lines.size() > 8: