Mirror from SNAPKITTYWEST: README.md

README.md

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+---
+language:
+- en
+license: apache-2.0
+tags:
+- sovereign
+- snapkitty
+- programming-language
+- deterministic
+- ledger
+- cryptography
+- sha256
+- mumps
+- ibm-i
+- worm-sealed
+- zero-dependencies
+- pure-python
+- formal-verification
+task_categories:
+- text-generation
+size_categories:
+- n<1K
+pretty_name: MANTRA — Deterministic Auditable Language
+---
+
+# MANTRA
+
+**A deterministic, auditable programming language for ledger operations, cryptographic sealing, and verified integer computation.**
+
+Zero external dependencies. Pure Python. Auditable SHA-256. MUMPS gateway.
+
+SnapKitty West / SNAPKITTYWEST — *Evidence or Silence — 2026*
+
+---
+
+## What It Is
+
+MANTRA is a purpose-built language for sovereign ledger operations. Every computation is deterministic and traceable. Every output can be cryptographically sealed. No external dependencies — the SHA-256 implementation is pure Python and auditable line by line.
+
+```
+# Constants and variables
+const GENESIS = "0000000000000000000000000000000000000000000000000000000000000000"
+let amount = 450000
+
+# Annotated deterministic function
+@deterministic
+define seal(tx)
+  let h = sha256(tx)
+  Result::ok(h)
+end
+
+# Run
+python mantra.py run examples/ledger.m
+python mantra.py hash "hello world"
+```
+
+---
+
+## Test Status
+
+| Suite | Tests |
+|---|---|
+| test_sha256 | passing |
+| test_integer | passing |
+| test_bytes | passing |
+| test_evaluator | passing |
+| **Total** | **23/23** |
+
+---
+
+## Architecture
+
+```
+mantra/
+├── mantra.py                   CLI (run / eval / hash / test)
+├── lexer/lexer.py              Tokenizer (HEX, BYTES, annotations, keywords)
+├── mantra_ast/nodes.py         AST dataclasses
+├── parser/parser.py            Pratt parser + field access + dict literals
+├── runtime/
+│   ├── types.py                Integer, Boolean, Bytes, String, DictValue, Option, Result
+│   ├── evaluator.py            Tree-walking evaluator with closures + builtins
+│   ├── runtime.py              run_source / run_file
+│   └── stdlib/
+│       ├── integer.py          add/sub/mul/div/mod/pow with overflow checking
+│       ├── bit.py              band/bor/bxor/bnot/shl/shr/rotl/rotr
+│       ├── bytes.py            concat/slice/len/get_byte
+│       ├── string.py           to_bytes/from_bytes/concat
+│       ├── hex.py              bytes_to_hex/hex_to_bytes
+│       ├── sha256.py           sha256/sha256_hex (wraps auditable impl)
+│       ├── collections.py      list_len/list_get/dict_get
+│       ├── result.py           ok/err/some/none
+│       └── testing.py          assert_eq/assert_true/assert_false
+├── sha256/
+│   ├── sha256_impl.py          Pure-Python SHA-256 (no hashlib, fully auditable)
+│   └── vectors.py              NIST canonical test vectors
+├── gateway/
+│   └── mumps_gateway.py        300-byte binary record pack/unpack/dispatch (IBM i bridge)
+└── examples/
+    ├── ledger.m                Transaction seal (end-to-end working)
+    └── treasury.m              Multi-step ledger chain
+```
+
+---
+
+## Key Properties
+
+| Property | Detail |
+|---|---|
+| Deterministic | Same inputs always produce same outputs |
+| Auditable SHA-256 | Pure Python, no hashlib, every round visible |
+| Zero dependencies | Nothing to install beyond Python 3.10+ |
+| MUMPS gateway | 300-byte binary record bridge to IBM i |
+| Fail-closed types | Option and Result — no silent nulls |
+| Overflow checking | Integer arithmetic bounds-checked |
+
+---
+
+## License
+
+Trilicensed: Apache-2.0 / MIT / Sovereign-Source-1.0 (see `LICENSES/`)
+
+---
+
+## Related Repos
+
+| Repo | Description |
+|---|---|
+| [SNAPKITTYWEST/sov](https://huggingface.co/datasets/SNAPKITTYWEST/sov) | Sovereign Package Switchboard |
+| [SNAPKITTYWEST/devflow-finance-twin](https://huggingface.co/datasets/SNAPKITTYWEST/devflow-finance-twin) | IBM i BaaS ledger stack |
+| [SNAPKITTYWEST/sovereign-training-corpus](https://huggingface.co/datasets/SNAPKITTYWEST/sovereign-training-corpus) | Training corpus |
+| [GitHub](https://github.com/SNAPKITTYWEST/mantra) | Source repository |