Feat: uninstall flow adjustments

[abaicus]

Closes Codeinwp/otter-internals#290.

Summary

Makes the plugin's uninstall (deactivation) feedback modal usage-aware. When the site has pages built with Otter blocks, the modal now warns how many pages
will be affected and surfaces Documentation / Get Support links — nudging users to reconsider or get help before they leave.

Screenshots

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Test instructions

Note

Needs this https://github.com/Codeinwp/themeisle-sdk-main/pull/319 version of the SDK.

• Setup — On a test site with Otter Blocks active, create/save 2–3 pages or posts that use Otter blocks (so the CSS post meta gets written).
• Golden path — Go to Plugins, click Deactivate on Otter Blocks. The feedback modal heading should read "You are using Otter Blocks on 3 pages. Uninstalling may break parts of your site." (matching your count), and Documentation + Get Support links should appear under the heading, styled and opening in new tabs.
• Support link branch — With Pro inactive, Get Support → wordpress.org/support/plugin/otter-blocks/. With Otter Pro active, it should point to store.themeisle.com.
• Empty-state regression — On a fresh site with no Otter-built pages (count = 0), deactivate the plugin: the heading should be the default SDK text (not overridden) and the extra links should not appear.
• Display cap — With >100 qualifying pages, the heading shows 100+ rather than the exact number.
• Cache invalidation — Note the count, then edit/save a page to add or remove Otter blocks (changing the CSS meta). The otter_blocks_pages_with_css_count transient should be deleted and the next deactivate attempt should reflect the new count. Confirm the transient is repopulated (1-day TTL) after the next read.

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Checklist before the final review

• [ ] Included E2E or unit tests for the changes in this PR.
• Visual elements are not affected by independent changes.
• It is at least compatible with the minimum WordPress version.
• It loads additional script in frontend only if it is required.
• Does not impact the Core Web Vitals.
• In case of deprecation, old blocks are safely migrated.
• It is usable in Widgets and FSE.
• Copy/Paste is working if the attributes are modified.
• PR is following the best practices

[pirate-bot]

Bundle Size Diff

Package	Old Size	New Size	Diff
Animations	178.27 KB	178.27 KB	0 B (0.00%)
Blocks	1.52 MB	1.52 MB	0 B (0.00%)
CSS	7.87 KB	7.87 KB	0 B (0.00%)
Dashboard	111.06 KB	111.06 KB	0 B (0.00%)
Onboarding	68.14 KB	68.14 KB	0 B (0.00%)
Export Import	4.7 KB	4.7 KB	0 B (0.00%)
Pro	328.43 KB	328.43 KB	0 B (0.00%)

[pirate-bot]

Plugin build for fb97aef is ready 🛎️!

• Download Otter – Page Builder Blocks & Extensions for Gutenberg - Production ~ Development
• Download Otter Pro - Production ~ Development
• Download Blocks Animation - Production ~ Development
• Download Blocks CSS - Production ~ Development
• Download Blocks Export Import - Production ~ Development

[pirate-bot]

E2E Tests

Playwright Test Status: See serial and parallel matrix jobs

Performance Results

serverResponse: {"q25":400.3,"q50":417,"q75":431.3,"cnt":10}, firstPaint: {"q25":574.2,"q50":649.3,"q75":738.7,"cnt":10}, domContentLoaded: {"q25":3310,"q50":3323.9,"q75":3382.6,"cnt":10}, loaded: {"q25":3312.1,"q50":3326.25,"q75":3384.7,"cnt":10}, firstContentfulPaint: {"q25":3808.6,"q50":3854.05,"q75":3896.9,"cnt":10}, firstBlock: {"q25":13541,"q50":13648.8,"q75":14025.1,"cnt":10}, type: {"q25":23.45,"q50":23.71,"q75":25.31,"cnt":10}, typeWithoutInspector: {"q25":20.55,"q50":21.57,"q75":23.72,"cnt":10}, typeWithTopToolbar: {"q25":29.04,"q50":30.19,"q75":32.49,"cnt":10}, typeContainer: {"q25":13.41,"q50":14.38,"q75":15.01,"cnt":10}, focus: {"q25":107.58,"q50":110,"q75":118.02,"cnt":10}, inserterOpen: {"q25":38.92,"q50":39.92,"q75":40.26,"cnt":10}, inserterSearch: {"q25":13.74,"q50":13.94,"q75":14.31,"cnt":10}, inserterHover: {"q25":5.48,"q50":5.77,"q75":6.03,"cnt":20}, loadPatterns: {"q25":1541.55,"q50":1616.15,"q75":1685.1,"cnt":10}, listViewOpen: {"q25":214.05,"q50":222.64,"q75":228.27,"cnt":10}