feat(ui): dialogue UI hardening and examine result overlay (#174)

Confrontation options use RichTextLabel with italic tags for
first-person voice (D-063). Examine result overlay auto-dismisses
after 5s with confidence-based color tinting. Dismisses when
dialogue opens. D-062 invisible locked options confirmed correct.

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

client/ui/examine_display.tscn

@@ -0,0 +1,50 @@
+[gd_scene load_steps=2 format=3 uid="uid://examine_display_sr"]
+
+[ext_resource type="Script" path="res://ui/examine_display.gd" id="1_examine"]
+
+; ExamineDisplay — non-interactive observe result overlay. D-013, #174.
+; Auto-dismisses after 5s. Positioned center-right, 40% from top.
+; InsertOverlay (CanvasLayer 10). Diegetic: insert processing observed data.
+
+[node name="ExamineDisplay" type="Control"]
+layout_mode = 3
+anchors_preset = 3
+anchor_left = 1.0
+anchor_top = 0.0
+anchor_right = 1.0
+anchor_bottom = 0.0
+offset_left = -440.0
+offset_top = 120.0
+offset_right = -16.0
+offset_bottom = 240.0
+grow_horizontal = 0
+grow_vertical = 2
+mouse_filter = 2
+modulate = Color(1, 1, 1, 0)
+script = ExtResource("1_examine")
+
+[node name="PanelContainer" type="PanelContainer" parent="."]
+layout_mode = 1
+anchors_preset = 15
+anchor_right = 1.0
+anchor_bottom = 1.0
+grow_horizontal = 2
+grow_vertical = 2
+mouse_filter = 2
+
+[node name="MarginContainer" type="MarginContainer" parent="PanelContainer"]
+layout_mode = 2
+theme_override_constants/margin_left = 12
+theme_override_constants/margin_top = 8
+theme_override_constants/margin_right = 12
+theme_override_constants/margin_bottom = 8
+mouse_filter = 2
+
+[node name="TextLabel" type="RichTextLabel" parent="PanelContainer/MarginContainer"]
+layout_mode = 2
+bbcode_enabled = true
+fit_content = true
+scroll_active = false
+mouse_filter = 2
+theme_override_font_sizes/normal_font_size = 13
+theme_override_colors/default_color = Color(0.784, 0.816, 0.878, 0.75)