test: refresh shared theme baselines

[afonsojramos]

Summary

Refresh the 14 tracked theme reference screenshots in place so reviewers can compare the proposed images with the existing Git versions and revert individual replacements if needed.

The captures cover Home, its profile dropdown, both Settings positions, Search, Liked Songs, and Spicetify Settings for Text's Spicetify scheme and the unthemed client. Differences include current recommendations, the selected track, search text, and Lyrics controls from the installed module set. The capture uses the running client configuration, including stdlib 1.11.3; it does not claim to show all module updates from modules PR #16.

Validation

• Spotify 1.3.0.277 on macOS; English UI; 1440 × 1000 CSS pixels at scale 1.
• Albums selected throughout. Playlist titles and artwork, account identifiers, and credentials masked while preserving layout.
• All 14 states captured twice with no detected pixel differences between runs. Every state was visually inspected, including localized differences against the approved references on main.
• Original theme, scheme, route, viewport, layout preferences, and scroll state restored after both runs.
• All 22 classmap tests pass with Python 3.12. Index currency and exposure validation pass.

Only baseline PNGs are committed. Capture reports and pixel diffs remain outside Git. This changes no runtime mappings, publication index, or support metadata. The proposed replacements become the approved references when this PR is approved and merged.