Universal Chameleon Polyglot Engine

Universal Chameleon Polyglot Interoperability Engine (`lchameleon.src`)

1. Closing the Foreign Function Verification Gap

In conventional toolchains, crossing an FFI boundary (extern "C", JNI, Python C-API, N-API, cgo, P/Invoke) discards compile-time guarantees: null pointers, misaligned tensor strides, unpinned GC references, dangling callback arenas, and out-of-range integers silently corrupt host memory.

Implemented in compiler/stage1/lchameleon.src, Lume's Universal Chameleon Polyglot Engine eliminates unverified foreign boundaries across 9 ecosystems:

• 256 / 256 certified obligations (160 proven QF_LIA theorems + 96 @bound WCET budgets, 0 runtime/refuted).
• 160 / 160 functions symbolically translation-validated (ltv) across 1,781 native boundary vectors (0 rejected).
• 0 / 2,392 uncovered Masking MC/DC conditions (2,118 native witnesses + 256 law conclusions + 18 lcert-proven infeasible).
• 19 / 19 native unit tests + dedicated C header preprocessor gate (tests/harness/c_adapter_gate.src).

Every foreign payload enters Lume as unverified[T] inside the / {ffi} capability effect and must pass a synthesized [I0003] QF_LIA refinement gate (plus FFI callback arena epoch guards preventing use-after-reset callbacks) before promotion to verified[T].

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2. The 9 Verified Foreign Ecosystems

Ecosystem ID	Target Runtime & ABI	[I0003] Formal Boundary Contract & Zero-Copy Mechanism	CLI Command
c_abi	C / C++ (SysV AMD64 / Win64 / AAPCS64)	Built-in C header preprocessor (--preprocess expanding #define, typedef, enum, structs & Linux io_uring syscalls 425..427), @repr(c) layout, ptr != 0, alignment & [0..cap] bounds	lume adapt c --preprocess <h>
rust_cdylib	Rust (cdylib / #[repr(C)] / extern "C")	Affine own / &T Perceus lifetime parity, borrow exclusivity, and panic = "abort" FFI boundary isolation	lume adapt rust <lib.rs>
python_capi	Python 3.12+ (PyObject* / DLPack)	Py_INCREF/Py_DECREF balance + DLPack zero-copy NDArray tensor bridge (64 B alignment, shape_dim >= 1, monotone strides)	lume adapt python <mod.py>
node_napi_wasm	Node.js / TypeScript (N-API v9 & WASM32)	Linear memory page-bound verification (offset + len <= wasm_pages * 65536, [I0275]) & UTF-8 slice validation	lume adapt js <index.d.ts>
go_cshared	Go (-buildmode=c-shared / cgo)	runtime.Pinner enforcement forbidding unpinned Go heap pointers from crossing into Lume	lume adapt go <pkg.go>
java_jni	Java / Kotlin (JNI & JDK 22+ Panama FFM)	PushLocalFrame / PopLocalFrame capacity balance (<= 64) and MemorySegment byte bounds	lume adapt java <Api.java>
dotnet_pinvoke	C# / .NET 8+ (P/Invoke & NativeAOT)	GCHandle.Alloc(Pinned) blittable struct size/alignment verification and span bounds	lume adapt dotnet <Api.cs>
sql_relational	SQL (PostgreSQL / SQLite / DuckDB)	DDL/DML schema lifting to typed table[T] with exact base-10 decimal scale & ACID WAL invariants	lume adapt sql <schema.sql>
openapi_rpc	OpenAPI 3.1 / JSON-Schema / gRPC	Authenticated TLS 1.3 transport + bounded payload contracts (0 < body <= max_bytes)	lume adapt openapi <api.yaml>

lume chameleon                                # Inspect all 9 verified ecosystems & [I0003] contract status
lume adapt c --preprocess include/api.h       # Preprocess C macros/typedefs and emit fail-closed [I0003] bindings
lume adapt python model_bridge.py             # Synthesize Python C-API + zero-copy DLPack tensor adapter
lume morph legacy_service.py                  # Transpile legacy C/Python/JS/Rust/Go/SQL into verified Lume (.src)

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3. FFI Callback Arena Epoch Guards & [I0003] Perimeter Proofs

When Lume passes a callback handle or arena-backed buffer to foreign C/Rust/Python code, lchameleon.src pairs pointer/alignment guards with monotonic arena epoch tokens:

@no_alloc
@bound(48)
pub fn chameleon_dlpack_ingest(data_ptr: int, ndim: int, numel: int, alignment: int, cb_epoch: int, live_epoch: int) -> int / pure
  requires data_ptr > 0 and ndim >= 1 and ndim <= 8 and numel > 0 and alignment == 64 and cb_epoch == live_epoch
  ensures result == numel and result > 0
= numel

Any null pointer, unaligned DLManagedTensor, negative byte count, or stale arena epoch (cb_epoch != live_epoch) fails closed with ERR:[I0003] at the foreign perimeter before pure Lume logic executes.

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4. LumePuter Weight-Compiled Neural VM (lume lumeputer, lneural_cartridge.src)

Beyond traditional FFI, lchameleon.src and compiler/stage1/lneural_cartridge.src implement LumePuter, compiling verified Lume functions directly into .safetensors neural weight cartridges (--target safetensors and --target lumeputer-rv32im-weights):

• Encodes program execution into SwiGLU (K = 128) projections (swiglu_gate_proj, swiglu_up_proj, swiglu_down_proj), Gated-DeltaNet recurrent state, RV32IM_Zba instruction ROM (deltanet_rom), and RMSNorm integrity ballast (ballast_rmsnorm_guard) with an embedded lcert proof certificate.
• Verified in lume safetensors-gate (G-SAFETENSORS): 63 / 63 argument vectors execute 100.0% bit-identically across .safetensors forward passes, native x86-64, and the LumePuter emulator, while 99 damaged files and opcode/weight tamper attempts are deterministically caught.

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5. Dynamical Singularity Boundary ($\Omega$) & Bayesian SPC Analytics (lume singularity)

lchameleon.src also houses Lume's verified operational physics and statistical process control engine (lume singularity / lume ote):

• Dynamical Singularity Boundary ($\Omega$): Dual-regime underdamped/overdamped 2nd-order step identification ($\zeta \in (0, 100]$), Operational Power Triangle ($S^2 = P^2 + Q^2$, power factor $\cos\Phi$), counter-phase Singularity Boundary theorem ($\tau_{\max} = T_m / 4$ where transport delay drives phase margin to zero), Nyquist sampling guard, and $3\times$ cascade control loop bandwidth decoupling.
• Bayesian & Operations Research Kernels: Conjugate Beta-Binomial posterior SPC (spc_beta_binomial_posterior_num), Page's tabular CUSUM shift detection (spc_cusum_upper_step_milli), Critical Path Method total float (ops_cpm_total_float_hours), $k$-anonymity disclosure guard (analytics_k_anonymity_release_ok), and Pool-Adjacent-Violators (PAVA) monotonic isotonic regression (analytics_pava_monotonic_pair_hi).