Add a fully fictional Mars HTML report example

[SkyNone]

What changed

• adds a self-contained interactive HTML demo set in a fictional Mars habitat in 2186
• uses an impossible-to-confuse-with-reality sci-fi character, institutions, evidence, routes, risks, and experiments
• adds a rendered desktop preview image for the repository README
• links the example from README with explicit fictional-world and privacy notices

Why

A visual example makes the Skill's final output easier to understand before installation, while a science-fiction setting creates a hard separation from any real person's history. The demo shows evidence summaries, five parallel-life routes, adjustable comparison weights, risk signals, and a reversible experiment.

Privacy

The Mars habitat, character, institutions, experiences, routes, scores, and numerical values are fictional. The earlier example was fully replaced and the unmerged branch commit was rewritten. Automated scans found no prior-case terms, personal identifiers, credentials, private paths, or external data calls.

Validation

• official Skill validator: passed
• desktop viewport 1440px: no overflow or runtime errors
• mobile viewport 390px: no overflow or runtime errors
• route switching and weighted score recalculation: passed
• HTML is self-contained and makes no network requests