feat: handle API cache for list insights project API

[Sameh16]

Changes proposed ✍️

What

copilot:summary
​
copilot:poem

Why

How

copilot:walkthrough

Checklist ✅

• Label appropriately with Feature, Improvement, or Bug.
• Add screenshots to the PR description for relevant FE changes
• New backend functionality has been unit-tested.
• API documentation has been updated (if necessary) (see docs on API documentation).
• Quality standards are met.

[Copilot]

Pull Request Overview

This PR refactors the Insights Projects admin UI to use TanStack Vue Query for data fetching and caching, replacing manual load more and loading states with useInfiniteQuery/useMutation.

• Refactored service methods to return typed promises and support query functions.
• Migrated page and add-project component to use Vue Query hooks for listing, creating, updating, and deleting.
• Introduced InsightsProjectRequest interface and updated helper for strong typing.

Reviewed Changes

Copilot reviewed 6 out of 6 changed files in this pull request and generated no comments.

Show a summary per file

File	Description
frontend/src/modules/admin/modules/insights-projects/services/insights-projects.service.ts	Refactored HTTP methods into typed instance methods for Vue Query usage.
frontend/src/modules/admin/modules/insights-projects/pages/insights-projects.page.vue	Replaced manual fetch/loading with useInfiniteQuery, updated bindings.
frontend/src/modules/admin/modules/insights-projects/models/insights-project.model.ts	Added InsightsProjectRequest to define request payload shape.
frontend/src/modules/admin/modules/insights-projects/insight-project-helper.ts	Added explicit return type to buildRequest.
frontend/src/modules/admin/modules/insights-projects/components/lf-insights-project-add.vue	Replaced manual service calls with useQuery and useMutation.
frontend/src/modules/admin/modules/collections/pages/collection.page.vue	Fixed total rows fallback to use `total

Comments suppressed due to low confidence (2)

frontend/src/modules/admin/modules/insights-projects/pages/insights-projects.page.vue:12

• The search input was unbound after removing @update:model-value. Add v-model:model-value="search" (or the equivalent prop/event bindings) so the search ref updates and debounced queries run.

@update:model-value="searchProjects()"

frontend/src/modules/admin/modules/insights-projects/services/insights-projects.service.ts:42

• [nitpick] The delete method name shadows the built-in delete operator and may confuse readers; consider renaming it to deleteProject or remove for clarity.

delete(id: string) {