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%% SnapKitty Nemotron Harness — ERE-5 Gate
%% Five-pass evaluation protocol (tau-prolog compatible)

%% Built-in list helpers (tau-prolog doesn't load these by default)

member(X, [X|_]).

member(X, [_|T]) :- member(X, T).



reverse_list(L, R) :- rev_acc(L, [], R).

rev_acc([], A, A).

rev_acc([H|T], A, R) :- rev_acc(T, [H|A], R).



ere_pass(structural).

ere_pass(scholarly).

ere_pass(invariants).

ere_pass(mission).

ere_pass(root).



%% Pass 1: Structural

ere5_pass(structural, Input, pass) :-

    nonvar(Input), Input \= [], !.

ere5_pass(structural, _, fail(structural_empty)).



%% Pass 2: Scholarly — no fabrication markers

ere5_pass(scholarly, Input, pass) :-

    \+ fabrication_marker(Input), !.

ere5_pass(scholarly, _, fail(scholarly_fabrication)).



fabrication_marker(X) :- atom(X), X = fabricated.

fabrication_marker(X) :- atom(X), X = invented.

fabrication_marker(X) :- is_list(X), member(M, X), fabrication_marker(M).



%% Pass 3: Invariants — reverse non-empty

ere5_pass(invariants, Input, pass) :-

    (is_list(Input) -> reverse_list(Input, Rev) ; Rev = Input),

    Rev \= [], !.

ere5_pass(invariants, _, fail(invariant_collapse)).



%% Pass 4: Mission — no null/void markers

ere5_pass(mission, Input, pass) :-

    \+ mission_violation(Input), !.

ere5_pass(mission, _, fail(mission_misaligned)).



mission_violation(null).

mission_violation(undefined).

mission_violation(none).



%% Pass 5: Root — nonvar

ere5_pass(root, Input, pass) :-

    nonvar(Input), !.

ere5_pass(root, _, fail(root_invalid)).



%% Run all five passes

ere5_check(Input, [R1, R2, R3, R4, R5]) :-

    ere5_pass(structural, Input, R1),

    ere5_pass(scholarly, Input, R2),

    ere5_pass(invariants, Input, R3),

    ere5_pass(mission, Input, R4),

    ere5_pass(root, Input, R5).



ere5_all_pass(Input) :-

    ere5_check(Input, Results),

    check_all_pass(Results).



check_all_pass([]).

check_all_pass([pass|Rest]) :- check_all_pass(Rest).