feat: added new css mappings for right sidebar

[Adrien5902]

Spotify introduced a collapsing feature for the right sidebar with the now playing content info, so I added the mappings to the collapsed bar classes, the names appended to Root__right-sidebar where taken from official app js

Summary by CodeRabbit

• New Features
  • Added support for right sidebar peek states, including expanded, collapsed, and deferred-collapsed views.
  • Added overlay content and controls for the right sidebar peek experience.

[coderabbitai]

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📥 Commits

Reviewing files that changed from the base of the PR and between 3fa4e90 and feac08a.

📒 Files selected for processing (1)

• css-map.json

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📝 Walkthrough

Walkthrough

Added CSS module class mappings for the right sidebar’s peek and overlay UI, including expanded, collapsed, and deferred-collapsed state variants.

Changes

Right sidebar CSS mappings

Layer / File(s)	Summary
Right sidebar state mappings css-map.json	Adds mappings for peek, overlay wrappers and controls, faux main view boundaries, and expanded, collapsed, and deferred-collapsed sidebar states.

Estimated code review effort: 1 (Trivial) | ~2 minutes

Possibly related PRs

• spicetify/cli#3897: Updates css-map.json with another CSS module class mapping.

Suggested reviewers: rxri, 0000day, golevka2001

🚥 Pre-merge checks | ✅ 5

✅ Passed checks (5 passed)

Check name	Status	Explanation
Description Check	✅ Passed	Check skipped - CodeRabbit’s high-level summary is enabled.
Title check	✅ Passed	The title accurately summarizes the main change: new CSS mappings for the right sidebar.
Docstring Coverage	✅ Passed	No functions found in the changed files to evaluate docstring coverage. Skipping docstring coverage check.
Linked Issues check	✅ Passed	Check skipped because no linked issues were found for this pull request.
Out of Scope Changes check	✅ Passed	Check skipped because no linked issues were found for this pull request.

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[rxri]

We called right sidebar buddyFeed some time ago, so are you sure, any of it won't apply to the buddyFeed mappings?

[Adrien5902]

I don't know maybe, but then that means those buddyFeed mappings may be outdated because they don't show up on my devtools, and I don't get any results other than the two buttons at the top next to the profile icon when searching for buddyFeed on the page

I'm referring to this bar :