Diff Viewer

[ZFordDev]

Problem / Use Case

Users may want to compare two versions of a document or two files side‑by‑side. Currently, SnapDock offers no diffing capability.

Proposed Solution

Add a minimal diff viewer that can compare:

• Current file vs previous snapshot
• Two open files
• Two selected files in the workspace

Alternatives Considered (optional)

External diff tools (VS Code, Meld, etc.), but these break workflow continuity.

Additional Notes (optional)

This is a medium‑complexity feature and may be better suited for SnapDock 3.2+.