Route UI labels through the string table

Move start menu, settings, pause, Help, HUD, radio, shift review and campaign
labels/templates into content/strings.en.json, including placeholder-validated
dynamic status text. No player-facing hardcoded labels remain outside dynamic
data/debug output. Headless 250/250, docs check OK.

src/game/ui/shift_review.gd

@@ -38,7 +38,7 @@ func _init() -> void:
 	root.add_child(center)
 
 	var title := Label.new()
-	title.text = "Shift Review"
+	title.text = Strings.lookup("review.title")
 	title.add_theme_font_size_override("font_size", 28)
 	title.horizontal_alignment = HORIZONTAL_ALIGNMENT_CENTER
 	center.add_child(title)
@@ -55,7 +55,7 @@ func _init() -> void:
 	center.add_child(_campaign_label)
 
 	_continue_button = Button.new()
-	_continue_button.text = "Continue campaign"
+	_continue_button.text = Strings.lookup("review.continue_campaign")
 	_continue_button.pressed.connect(func(): continue_requested.emit())
 	_continue_button.size_flags_horizontal = Control.SIZE_SHRINK_CENTER
 	center.add_child(_continue_button)
@@ -126,28 +126,28 @@ func show_review(review: Dictionary, scenario: Resource, history: Array = [],
 			var g: String = rep.get("grade", "?")
 			if not past_grades.has(g):
 				past_grades.append(g)
-		history_line = "Shifts on record: %d · best score: %.0f · grades seen: %s" % [
-			history.size(), best, ", ".join(past_grades)]
+		history_line = Strings.fmt("review.history", [
+			history.size(), best, ", ".join(past_grades)])
 
 	var lines: Array[String] = [
-		"Venue: %s" % (scenario.display_name if scenario else review.get("scenario_id", "")),
-		"Policy: %s" % (scenario.policy_summary if scenario else "See venue policy."),
-		"Grade: %s   Score: %.0f/100" % [reputation.get("grade", "?"), reputation.get("rating", 0.0)],
+		Strings.fmt("review.venue", [scenario.display_name if scenario else review.get("scenario_id", "")]),
+		Strings.fmt("review.policy", [scenario.policy_summary if scenario else "See venue policy."]),
+		Strings.fmt("review.grade", [reputation.get("grade", "?"), reputation.get("rating", 0.0)]),
 		history_line,
-		"Incidents handled: %d (peaceful %d)" % [incident_list.size(), peaceful],
-		"NPCs encountered: %d" % review.get("spawned_count", 0),
-		"Radio battery: %.0f%%   emergency cooldown: %.0fs" % [radio.get("battery", 0.0), radio.get("emergency_cooldown_s", 0.0)],
-		"Crowd mood: %.0f%% (panic: %s)" % [crowd.get("mood", 0.0) * 100.0, str(crowd.get("panic", false))],
+		Strings.fmt("review.incidents", [incident_list.size(), peaceful]),
+		Strings.fmt("review.npcs", [review.get("spawned_count", 0)]),
+		Strings.fmt("review.radio", [radio.get("battery", 0.0), radio.get("emergency_cooldown_s", 0.0)]),
+		Strings.fmt("review.crowd", [crowd.get("mood", 0.0) * 100.0, str(crowd.get("panic", false))]),
 		Strings.fmt("review.responder", [", ".join(outcomes) if outcomes.size() > 0 else Strings.lookup("review.none")]),
 		Strings.fmt("review.investigations", [" | ".join(investigations) if investigations.size() > 0 else Strings.lookup("review.none")]),
 		"",
-		"Highlights:",
+		Strings.lookup("review.highlights"),
 	]
 	var mods: Array = reputation.get("modifiers", [])
 	var shown := 0
 	for mod in mods:
 		var delta: float = float(mod.get("delta", 0.0))
-		lines.append("  %s  (%+.0f)  %s" % [mod.get("category", ""), delta, mod.get("reason", "")])
+		lines.append(Strings.fmt("review.modifier", [str(mod.get("category", "")), "%+.0f" % delta, str(mod.get("reason", ""))]))
 		shown += 1
 		if shown >= 12:
 			break
@@ -156,11 +156,11 @@ func show_review(review: Dictionary, scenario: Resource, history: Array = [],
 	var campaign_complete := bool(campaign_summary.get("complete", false))
 	if _campaign_label:
 		if campaign_complete:
-			_campaign_label.text = "Campaign complete. Free-play venues remain available."
+			_campaign_label.text = Strings.lookup("review.campaign_complete")
 		elif next_venue != "":
-			_campaign_label.text = "Campaign shift %d complete · next: %s" % [
+			_campaign_label.text = Strings.fmt("review.campaign_next", [
 				int(campaign_summary.get("shift_number", 1)) - 1,
-				next_venue.replace("_", " ").capitalize()]
+				next_venue.replace("_", " ").capitalize()])
 		else:
 			_campaign_label.text = ""
 	if _continue_button: