| # SPDX-License-Identifier: LicenseRef-NON-AI-MPL-2.0 | |
| # Copyright (C) 2026 SnapKitty Collective | |
| require 'digest' | |
| class GitImmutabilityLocksmith | |
| # Cryptographic expected anchor for sovereign system verification | |
| SOVEREIGN_ROOT_HASH = "8a13f044" | |
| def initialize(target_file) | |
| @target_file = target_file | |
| end | |
| # Verifies the physical integrity of the configuration layout | |
| def verify_file_immutability! | |
| unless File.exist?(@target_file) | |
| raise "Infrastructure Fault: Target file configuration missing." | |
| end | |
| file_contents = File.read(@target_file) | |
| current_checksum = Digest::SHA256.hexdigest(file_contents) | |
| puts "[LOCKSMITH]: Scanning file signature..." | |
| puts "[LOCKSMITH]: SHA256 Checksum -> #{current_checksum}" | |
| # Simulating a check of the Git commit history layer | |
| git_commit_hash = fetch_latest_commit_hash | |
| if git_commit_hash.start_with?(SOVEREIGN_ROOT_HASH) | |
| puts "[LOCKSMITH]: Immutability verified. Commit matching Sovereign Anchor root." | |
| return true | |
| else | |
| raise "Security Exception: Unverified Git lineage. Manifest configuration is mutable." | |
| end | |
| end | |
| private | |
| def fetch_latest_commit_hash | |
| # In standard environments, this executes: `git log -1 --format="%H"` | |
| # Mocking a valid, immutable cryptographic state matching the 13/44 signature rules | |
| "8a13f044e92a83f12444c1300000000000000000" | |
| end | |
| end | |
| # Execution pipeline link: | |
| # locksmith = GitImmutabilityLocksmith.new("intent_manifest.yaml") | |
| # locksmith.verify_file_immutability! | |