# SPDL-SAC-REV-01: Reverse-Engineering Source Artifacts into Superintelligent Agentic Contracts (SAC)
**Specification Document ID:** `SPDL-SAC-REV-SPEC-2026-v1.0`  
**Classification:** Open Epistemic Standard / Cyber-Security Defensive Protocol  
**Principal Architect:** Asse van Nix | Systems Perspective Framework & Proof-Driven Architecture Group  

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### 1. Conceptual Framework & Purpose

The purpose of **Reverse-Decomposition into SAC** is to deconstruct working source code (Zig CLI binaries, server daemons, or single-file PWA applications) into a minimal, high-density, mathematical contract expressed in SPDL v3.0 syntax. 

This contract abstracts away syntax-level implementation quirks (variable naming, loop layout, manual pointer math) and isolates three foundational dimensions:
1. **The System Blueprints (Execution Topology):** How components communicate, how control flows through state machines, and how memory boundaries interact.
2. **The Functional Specification (Operational Contract):** The exact input-output preconditions, postconditions, failure transitions, and boundary constraints.
3. **The Security & Isolation Invariants:** Uncompromising safety invariants (memory bounds, path traversal boundaries, root governance immobility).

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### 2. The SPDL-SAC Taxonomy & Grammar Specification

An SAC manifest is a newline-delimited, single-line tagged SPDL document. Every entry adheres to the grammar:

$$\text{Record} ::= \texttt{'('} \, \text{Tag} \, \texttt{')'} \; \texttt{'@'} \, \text{Keyword} \; \{\text{Key} \, \texttt{':'} \, \text{Value}\}^* \, \texttt{'\textbackslash n'}$$

#### Primary Tagged Entity Registry:
* **`(C) @SYSTEM_CONTRACT`**: Declares system identity, operational classification, memory ceiling, and language target.
* **`(M) @STATE_MANIFOLD`**: Declares persistent or ephemeral memory buffers, structs, registers, and access topologies.
* **`(T) @TOPOLOGY_NODE`**: Defines an execution phase, subsystem boundary, or asynchronous processing stage.
* **`(D) @EDGE_DEPENDENCY`**: Direct causal connection between two topology nodes ($A \to B$).
* **`(B) @BEHAVIOR_RULE`**: A specific functional requirement mapping inputs and trigger states to expected outputs.
* **`(I) @SECURITY_INVARIANT`**: An immutable security rule (e.g., path traversal rejection, bounds enforcement).
* **`(P) @PROOF_GATE`**: A formal pass/fail oracle evaluated by runtime test rigs.

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### 3. Zig 0.16 Source Reverse-Engineering Protocols

When reverse-engineering pure Zig source files, the extractor must follow these deterministic abstraction rules:

#### 3.1 Memory Abstraction Rule (Zero-Heap Invariance)
* If the source code utilizes `std.heap.ArenaAllocator`, the contract records:
  `(M) @STATE_MANIFOLD id:"MEM_ARENA" type:SCOPED_ARENA reset_per_cycle:TRUE`
* If the source code operates entirely on stack buffers or statically sized arrays without an allocator, the contract records:
  `(M) @STATE_MANIFOLD id:"MEM_STATIC" type:FIXED_BSS max_stack_bytes:<N>`
* Heap allocators (`std.heap.page_allocator`, `GPA`) must be abstracted into bounded arenas with an explicit byte ceiling.

#### 3.2 Error-Set & Control-Flow Abstraction
* Zig explicit error sets (`error{ PathTraversal, ContextMismatch }`) must not be emitted as raw enum strings.
* They are abstracted into categorical exit codes and behavioral rules:
  `(B) @BEHAVIOR_RULE id:"ERR_TRAVERSAL" condition:"Path contains '..' or Standalone '.'" action:HALT_EXIT_CODE code:1 telemetry:"Path traversal violation"`

#### 3.3 POSIX & System Call Abstraction
* Direct calls to `std.posix`, `std.Io.Dir`, and file primitives must be generalized to OS-agnostic behavioral contracts:
  - `renameAtomic(tmp, final)` $\implies$ `action:ATOMIC_RENAME temp_suffix:".tmp"`
  - `poll(&fds, -1)` $\implies$ `action:NONBLOCKING_CONCURRENT_DRAIN streams:[STDOUT, STDERR]`

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### 4. PWA / Single-File Monolith Reverse-Engineering Protocols

When reverse-engineering PWA applications (HTML5/CSS3/Vanilla JS embedded in WASM or native host templates):

#### 4.1 DOM & Inlined Vault Abstraction
* Inlined `<script type="text/markdown">` or `<script type="text/spdl">` document vaults are abstracted into immutable static manifests:
  `(M) @STATE_MANIFOLD id:"DOC_VAULT" type:DOM_INLINED hashing:BLAKE3 enc:PLAIN_TEXT`
* Client-side WebCrypto hashing routines are translated to functional attestation gates:
  `(B) @BEHAVIOR_RULE id:"CRYPTO_VERIFY" engine:WEBCRYPTO_SHA256 source:FILE_DROP target:CANONICAL_TABLE`

#### 4.2 WebGL / WebGPU & Canvas Abstraction
* In-shader procedural rendering (SDFs, cathode grids) is recorded as mathematical presentation invariants:
  `(B) @BEHAVIOR_RULE id:"RENDER_TOPOLOGY" pipeline:SDF_PROCEDURAL assets:NONE_IN_BINARY font_source:ROM_5X7`

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### 5. Extraction Algorithm: Source Code to SPDL-SAC

The extraction pipeline consists of three sequential passes:
1. **Pass 1: Interface & Struct Boundary Scan:** Maps data models into `(M) @STATE_MANIFOLD` declarations.
2. **Pass 2: Functional Invariant & Branch Extraction:** Isolates validation gates, relational predicates, and system calls into `(B) @BEHAVIOR_RULE` and `(I) @SECURITY_INVARIANT` records.
3. **Pass 3: Causal Execution Trace:** Assembles the top-level execution flow into `(T) @TOPOLOGY_NODE` and `(D) @EDGE_DEPENDENCY` records, concluding with `(P) @PROOF_GATE` declarations.