feat: GNOME Shell 50 compatibility, overview signals, and QA tooling

[ondrovic]

Align Search Light with GNOME Shell 48–50 by connecting to Main.overview's real showing/hidden signals instead of overview-showing/overview-hidden, so _inOverview tracks the overview correctly. Replace the brittlesearch-results grid walk in _isDraggingIcon with a recursive lookup for grid-search-results and defensive drag checks. Drop unused Graphene wiring and fix metadata to use settings-schema for current Extension APIs.

Refresh the README for install, session restart, shortcuts, and blurdependencies. Add make test (strict schemas + ESLint via npx), relax ESLint for this codebase's style, and fall back to Python when zip is missing for publish. Bump extension version to 102.

Also apply small lint-driven fixes across prefs, keybinding, effects, shortcuts, style, timer, and easing (including a runAnimation array check).

[cryptbrn]

Hi @icedman, can you help to review and merge this PR? hope its can be merged and updated to gnome extension as soon as possible

[jadahl]

Fwiw, tested this on GNOME 50, and it seems to work.

[claud2893]

I have tested the files in this PR with the latest Fedora 44: search-light extension works perfectly on GNOME 50 with these updated files.

[CthulhuOnIce]

Is this project abandoned?
@ondrovic you are a saint

[MrBns]

@icedman hey, could you check and merge this ? its been a while after this is opened.

[schrieveslaach]

FYI: the plugin is already compatible but the review on the GNOME extension portal is missing, see also #155 (comment). The PR title was a bit misleading to me so I wanted to provide that information to others that @icedman did already provide GNOME 50 compatibility.

[purvansh2003-creator]

YEAH @icedman ITS WORKING REVIEW IT AND ADD MERGE THIS TO PR .