Implement NPC perception, returning trespassers, responder dispatch, wand screening, and accessibility polish

src/test/tests/test_strings.gd

@@ -0,0 +1,33 @@
+extends RefCounted
+## Headless tests for the centralized localization string table.
+
+const Strings := preload("res://src/core/strings.gd")
+
+
+func test_strings_lookup() -> bool:
+	var a := TestUtils.check_eq(Strings.lookup("hud.aim_first"), "Aim at someone first.", "known key returns value")
+	var b := TestUtils.check_eq(Strings.lookup("missing.key"), "missing.key", "missing key returns key itself")
+	return a and b
+
+func test_strings_format() -> bool:
+	var a := TestUtils.check_eq(Strings.fmt("hud.tone_prefix", ["Firm"]), "Tone: Firm", "tone prefix formats")
+	var b := TestUtils.check_eq(Strings.fmt("react.comply", ["Tourist"]), "Tourist complies and steps back.", "reaction formats")
+	return a and b
+
+func test_strings_cover_ui_keys() -> bool:
+	## Every key referenced by the HUD and game manager must exist.
+	var required := [
+		"hud.controls", "hud.tone_prefix", "hud.escalation_prefix", "hud.cooldown",
+		"hud.aim_first", "hud.no_one_nearby", "hud.targeting", "hud.no_wand",
+		"hud.screen_first", "access.granted", "access.denied", "access.policy_satisfied",
+		"access.wrong_grant", "access.wrong_deny", "wand.admitted_prohibited",
+		"wand.denied_false_alarm", "wand.cleared", "wand.refused", "radio.address_first",
+		"radio.blocked", "radio.inaccurate", "radio.received", "radio.emergency_dispatched",
+		"responder.arrived", "react.comply", "react.leave", "react.argue", "react.record",
+		"react.ignore", "react.threaten", "react.force_entry", "react.return_later",
+		"react.none", "perception.near", "perception.aware",
+	]
+	for key in required:
+		if not Strings.TABLE.has(key):
+			return TestUtils.fail("missing string key: %s" % key)
+	return true