fix(ui): HUD layout pass — resolve overlapping elements (#792)

- HUD status panel moved to y=80 (below TimeDisplay at 16-70)
- Removed redundant time row from HUD (TimeDisplay handles it)
- Debug overlay starts at y=150 (below HUD status panel)
- Stance indicator moved below minimap (y=192, was overlapping at y=16)
- Interaction prompt moved to y=-240 (above dialogue box at -200)

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

client/ui/debug_overlay.gd

@@ -76,6 +76,7 @@ var _tick_deltas: Array = []  # ms between consecutive snapshots
 func _ready() -> void:
 	_dev_mode = OS.is_debug_build()
 	visible = false
+	position.y = 150.0  # Below TimeDisplay (16-70) + HUD status panel (80-140)
 	_cached_font = ThemeDB.fallback_font
 	# Clear NPC path history on session change to prevent entity ID collisions
 	GameState.connect("game_id_changed", _on_game_id_changed)