Add general app feedback reporting

tests/post_answer_review_test.gd

@@ -13,6 +13,8 @@ func _initialize() -> void:
 	_test_collapsed_followup_review_expands()
 	_test_question_failure_retry_classification()
 	_test_transient_question_failure_keeps_player_waiting()
+	_test_feedback_context_excludes_study_content()
+	_test_feedback_form_validation()
 	quit(1 if failures > 0 else 0)
 
 
@@ -169,6 +171,24 @@ func _test_transient_question_failure_keeps_player_waiting() -> void:
 	player.free()
 
 
+func _test_feedback_context_excludes_study_content() -> void:
+	var feedback = root.get_node("FeedbackService")
+	var context: Dictionary = feedback.build_context("player", Vector2(1280, 720))
+	_assert(context.get("screen", "") == "player", "feedback context should identify the current screen")
+	_assert(context.get("viewportWidth", 0) == 1280, "feedback context should include viewport width")
+	_assert(context.get("viewportHeight", 0) == 720, "feedback context should include viewport height")
+	_assert(not context.has("question"), "feedback context must not include question content")
+	_assert(not context.has("answer"), "feedback context must not include answer content")
+	_assert(not context.has("accessToken"), "feedback context must not include authentication tokens")
+
+
+func _test_feedback_form_validation() -> void:
+	var dialog_script = load("res://scripts/ui/app_feedback_dialog.gd")
+	_assert(dialog_script.is_valid_submission("bug", "The next button does not respond."), "valid feedback should be accepted")
+	_assert(not dialog_script.is_valid_submission("unknown", "The next button does not respond."), "unknown categories should be rejected")
+	_assert(not dialog_script.is_valid_submission("bug", "Too short"), "short feedback should be rejected")
+
+
 func _assert(condition: bool, message: String) -> void:
 	if condition:
 		return