[AlexAndBear]

Description

• Hidden files on the search results page: toggling "Show hidden files" now shows or hides hidden results right away, without a new search request.
• How: the results page requests hidden results too (useSearch().search(term, limit, { includeHidden: true })) and the resources store filters them reactively, like in every folder view. The search bar preview and other callers keep filtering hidden results as before.
• Footer: the info line now mentions hidden results ("including M hidden"), like in folders. When a search hits the result limit, "showing the N best matching results" counts only the shown results and updates when the option is toggled.

Related Issue

• Fixes "Show hidden files" on the search results page has no effect until reload #3667

How Has This Been Tested?

• test environment: unit tests (Vitest), browser tests (Playwright) against a local OpenCloud
• test case 1: unit: the list search requests hidden results; useSearch keeps them with the option and filters them by default; toggling hidden files shows/hides results without a new search
• test case 2: browser: reproduced on main; on the fix toggling shows/hides hidden results instantly with no search request, only-hidden matches, tiles and table, selection and keyboard, search bar preview and shortcut suggestions unchanged

Types of changes

• Bugfix
• Enhancement (a change that doesn't break existing code or deployments)
• Breaking change (a modification that affects current functionality)
• Technical debt (addressing code that needs refactoring or improvements)
• Tests (adding or improving tests)
• Documentation (updates or additions to documentation)
• Maintenance (like dependency updates or tooling adjustments)

[AlexAndBear]

Reworked in 5a53c53: hidden results now stay in the store and are filtered reactively instead of re-running the search.