passes: junk classes with real bodies and no fingerprint

NoisePass now builds branching helper methods (counted int loop,
random arithmetic, even/odd merge, non-throwing ops only) whose
results the entry sums into a private static field, instead of an
empty run()V. Names come from the same NameGenerator styles as
real code and live in a random real package (no more shadow/decoy
uniformity for grep to catch); every generated method gets fresh
StackMapTable frames. weave_first_reachable takes (class, entry)
pairs. New NoiseConfig.junk_methods_per_class (default 3).

Tests assert invariants (unique valid identifiers, calls, field
store, determinism) plus real-JVM verification of junk classes;
paranoid+junk_ratio=1 smoke on lorep: 18 junk classes, all load.

crates/noxis-passes/src/strings/crypt.rs

@@ -7,7 +7,7 @@
 use noxis_classfile::{Const, Insn, InvokeKind};
 use noxis_runtime::{DECODER_DESC, DECODER_METHOD};
 
-/// Разбить строку на чанки по границе символов (1–3 штуки).
+/// Разбить строку на чанки по границе символов (1-3 штуки).
 pub(super) fn split_chunks(text: &str, split_above: usize) -> Vec<String> {
     let chars: Vec<char> = text.chars().collect();
     if chars.len() <= split_above.max(1) {