initial commit

.gitignore

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+# Build output (root workspace + the separate fuzz workspace).
+/target/
+/fuzz/target/
+
+# cargo-fuzz working state. The corpus is REGENERATED (`fuzz/gen_corpus.rs` synthesizes seeds in-process),
+# crash artifacts and run logs are per-run, and a fuzzed corpus accumulates mutated engine bytes — which the
+# project's clean-room provenance deliberately keeps out of the tree.
+/fuzz/corpus/
+/fuzz/artifacts/
+/fuzz/logs/
+
+# Derive working dirs: `produce --out-dir` and the workflows' fetch/stage dirs, plus the `.seed` bundle
+# unpack that lands beside an out-dir. All are per-run and can appear inside a runner's persistent checkout.
+/dist/
+/in/
+/out/
+/work/
+.seed/