ISSUE-001 — Implement SHA-256 File Deduplication

[ISONIC0788]

What to build

Implement the documented file deduplication mechanism within the generation workflow. The engine should calculate the SHA-256 hash of each freshly compiled string output and compare it against the file currently existing at the destination path. If they match, the file write operation should be safely skipped to reduce disk wear and optimize incremental re-runs without clobbering manual edits.

Files to modify

• src/generate.js

Specs

• Refer to Section 5.2 (File Generation Algorithm) of the Technical Documentation.

Acceptance criteria

• Add a utility function to compute a SHA-256 hash from string content.
• Read existing files at target destinations before rewriting them.
• Skip the fs.writeFileSync call if the compiled output hash matches the existing file hash.
• Log deduplication actions accurately under --verbose mode.

Dependencies

• None