Moving back to Inertia 2

[skyfallwastaken]

Inertia 3 has performance regressions and the result is so bad that we haven't even been running off the latest main commit for some time.

[greptile-apps]

Too many files changed for review. (111 files found, 100 file limit)

[Copilot]

Pull request overview

This PR rolls the app back from Inertia 3 to an Inertia 2.x codebase (vendored into vendor/inertia) to avoid the performance regressions observed on the newer major version.

Changes:

• Remove the @inertiajs/vite Vite plugin integration and switch JS dependencies to local file: vendored Inertia packages.
• Update CSR + SSR entrypoints to the Inertia 2 Svelte adapter APIs (including starting an SSR server via @inertiajs/svelte/server).
• Downgrade inertia_rails and adjust a UI integration (layerchart tooltip slot usage) to match the older dependency set.

Reviewed changes

Copilot reviewed 6 out of 111 changed files in this pull request and generated 2 comments.

Show a summary per file

File	Description
vite.config.ts	Removes @inertiajs/vite plugin usage from Vite config.
package.json	Switches @inertiajs/* deps to local vendored packages; adjusts related JS deps.
Gemfile	Downgrades inertia_rails requirement to ~> 3.17.
Gemfile.lock	Locks gems to versions compatible with the downgraded inertia_rails.
app/javascript/entrypoints/inertia.ts	Updates client bootstrapping to use resolve + import.meta.glob for Inertia 2 adapter.
app/javascript/ssr/ssr.ts	Updates SSR bootstrapping to start an SSR server and render via svelte/server.
app/javascript/pages/Home/signedIn/ProjectTimelineChart.svelte	Adjusts tooltip slot/snippet usage for downgraded layerchart.
vendor/inertia/packages/core/package.json	Adds vendored @inertiajs/core v2.3.14 package metadata.
vendor/inertia/packages/core/dist/server.js	Vendored Inertia core SSR server implementation.
vendor/inertia/packages/core/dist/server.js.map	Sourcemap for vendored SSR server bundle.
vendor/inertia/packages/core/types/index.d.ts	Vendored core public type exports.
vendor/inertia/packages/core/types/types.d.ts	Vendored core type definitions (Visit API, config, etc.).
vendor/inertia/packages/core/types/router.d.ts	Vendored router API types.
vendor/inertia/packages/core/types/server.d.ts	Vendored server entry type definitions.
vendor/inertia/packages/core/types/ssrErrors.d.ts	Vendored SSR error classification types.
vendor/inertia/packages/core/types/ssrUtils.d.ts	Vendored SSR HTML assembly helper types.
vendor/inertia/packages/core/types/url.d.ts	Vendored URL/querystring helper types.
vendor/inertia/packages/core/types/useFormUtils.d.ts	Vendored form argument parsing helper types.
vendor/inertia/packages/core/types/http.d.ts	Vendored HTTP client façade types.
vendor/inertia/packages/core/types/httpErrors.d.ts	Vendored HTTP error types.
vendor/inertia/packages/core/types/httpHandlers.d.ts	Vendored HTTP handler middleware types.
vendor/inertia/packages/core/types/xhrHttpClient.d.ts	Vendored XHR client type definitions.
vendor/inertia/packages/core/types/axiosHttpClient.d.ts	Vendored Axios adapter type definitions.
vendor/inertia/packages/core/types/config.d.ts	Vendored config container types.
vendor/inertia/packages/core/types/history.d.ts	Vendored history/session types.
vendor/inertia/packages/core/types/page.d.ts	Vendored current page singleton types.
vendor/inertia/packages/core/types/events.d.ts	Vendored event firing function types.
vendor/inertia/packages/core/types/eventHandler.d.ts	Vendored global/internal event handler types.
vendor/inertia/packages/core/types/navigationEvents.d.ts	Vendored navigation interception helper types.
vendor/inertia/packages/core/types/navigationType.d.ts	Vendored navigation timing helper types.
vendor/inertia/packages/core/types/progress.d.ts	Vendored progress indicator types.
vendor/inertia/packages/core/types/progress-component.d.ts	Vendored progress component API types.
vendor/inertia/packages/core/types/scroll.d.ts	Vendored scroll persistence types.
vendor/inertia/packages/core/types/sessionStorage.d.ts	Vendored session storage helper types.
vendor/inertia/packages/core/types/request.d.ts	Vendored request orchestration types.
vendor/inertia/packages/core/types/requestParams.d.ts	Vendored request parameter tracking types.
vendor/inertia/packages/core/types/requestStream.d.ts	Vendored request stream concurrency types.
vendor/inertia/packages/core/types/response.d.ts	Vendored response processing types.
vendor/inertia/packages/core/types/queue.d.ts	Vendored queue helper types.
vendor/inertia/packages/core/types/queryString.d.ts	Vendored query string parse/stringify types.
vendor/inertia/packages/core/types/time.d.ts	Vendored cache time parsing helper types.
vendor/inertia/packages/core/types/debounce.d.ts	Vendored debounce helper type.
vendor/inertia/packages/core/types/debug.d.ts	Vendored debug helper type.
vendor/inertia/packages/core/types/dialog.d.ts	Vendored modal/dialog helper type.
vendor/inertia/packages/core/types/domUtils.d.ts	Vendored DOM helper types.
vendor/inertia/packages/core/types/encryption.d.ts	Vendored history encryption helper types.
vendor/inertia/packages/core/types/files.d.ts	Vendored file detection helper types.
vendor/inertia/packages/core/types/formData.d.ts	Vendored object->FormData helper types.
vendor/inertia/packages/core/types/formObject.d.ts	Vendored FormData->object helper types.
vendor/inertia/packages/core/types/objectUtils.d.ts	Vendored object comparison helper type.
vendor/inertia/packages/core/types/initialVisit.d.ts	Vendored initial visit behavior types.
vendor/inertia/packages/core/types/resetFormFields.d.ts	Vendored form reset helper types.
vendor/inertia/packages/core/types/intersectionObservers.d.ts	Vendored IntersectionObserver manager types.
vendor/inertia/packages/core/types/layout.d.ts	Vendored layout normalization/props store types.
vendor/inertia/packages/core/types/infiniteScroll.d.ts	Vendored infinite scroll API types.
vendor/inertia/packages/core/types/infiniteScroll/data.d.ts	Vendored infinite scroll data manager types.
vendor/inertia/packages/core/types/infiniteScroll/elements.d.ts	Vendored infinite scroll element manager types.
vendor/inertia/packages/core/types/infiniteScroll/queryString.d.ts	Vendored infinite scroll URL sync types.
vendor/inertia/packages/core/types/infiniteScroll/scrollPreservation.d.ts	Vendored infinite scroll scroll-preservation types.
vendor/inertia/packages/svelte/package.json	Adds vendored @inertiajs/svelte v2.3.14 package metadata.
vendor/inertia/packages/svelte/dist/index.js	Vendored Svelte adapter public runtime exports.
vendor/inertia/packages/svelte/dist/index.d.ts	Vendored Svelte adapter public type exports.
vendor/inertia/packages/svelte/dist/createInertiaApp.js	Vendored Svelte adapter app bootstrap logic (CSR/SSR).
vendor/inertia/packages/svelte/dist/createInertiaApp.d.ts	Vendored Svelte adapter createInertiaApp typings.
vendor/inertia/packages/svelte/dist/server.js	Vendored @inertiajs/svelte/server re-export.
vendor/inertia/packages/svelte/dist/server.d.ts	Vendored @inertiajs/svelte/server type re-export.
vendor/inertia/packages/svelte/dist/types.js	Vendored adapter types module runtime stub.
vendor/inertia/packages/svelte/dist/types.d.ts	Vendored adapter shared type definitions (layouts, resolver types).
vendor/inertia/packages/svelte/dist/page.svelte.js	Vendored global page store implementation.
vendor/inertia/packages/svelte/dist/page.svelte.d.ts	Vendored global page store typings.
vendor/inertia/packages/svelte/dist/link.js	Vendored inertia action implementation.
vendor/inertia/packages/svelte/dist/link.d.ts	Vendored inertia action typings.
vendor/inertia/packages/svelte/dist/layoutProps.svelte.js	Vendored layout props store integration.
vendor/inertia/packages/svelte/dist/layoutProps.svelte.d.ts	Vendored layout props store typings.
vendor/inertia/packages/svelte/dist/useForm.svelte.js	Vendored useForm implementation.
vendor/inertia/packages/svelte/dist/useForm.svelte.d.ts	Vendored useForm typings.
vendor/inertia/packages/svelte/dist/useFormState.svelte.js	Vendored internal form state management.
vendor/inertia/packages/svelte/dist/useFormState.svelte.d.ts	Vendored internal form state typings.
vendor/inertia/packages/svelte/dist/useHttp.svelte.js	Vendored useHttp implementation.
vendor/inertia/packages/svelte/dist/useHttp.svelte.d.ts	Vendored useHttp typings.
vendor/inertia/packages/svelte/dist/usePoll.js	Vendored usePoll implementation.
vendor/inertia/packages/svelte/dist/usePoll.d.ts	Vendored usePoll typings.
vendor/inertia/packages/svelte/dist/usePrefetch.svelte.js	Vendored usePrefetch implementation.
vendor/inertia/packages/svelte/dist/usePrefetch.svelte.d.ts	Vendored usePrefetch typings.
vendor/inertia/packages/svelte/dist/useRemember.svelte.js	Vendored useRemember implementation.
vendor/inertia/packages/svelte/dist/useRemember.svelte.d.ts	Vendored useRemember typings.
vendor/inertia/packages/svelte/dist/components/App.svelte	Vendored root Inertia App component (Svelte adapter).
vendor/inertia/packages/svelte/dist/components/App.svelte.d.ts	Vendored App component typings.
vendor/inertia/packages/svelte/dist/components/Render.svelte	Vendored recursive renderer for layouts/components.
vendor/inertia/packages/svelte/dist/components/Render.svelte.d.ts	Vendored Render typings (incl. h).
vendor/inertia/packages/svelte/dist/components/Link.svelte	Vendored Link component wrapper for the inertia action.
vendor/inertia/packages/svelte/dist/components/Link.svelte.d.ts	Vendored Link component typings.
vendor/inertia/packages/svelte/dist/components/Form.svelte	Vendored Form component wrapper (incl. Precognition hooks).
vendor/inertia/packages/svelte/dist/components/Form.svelte.d.ts	Vendored Form component typings.
vendor/inertia/packages/svelte/dist/components/formContext.js	Vendored form context helpers.
vendor/inertia/packages/svelte/dist/components/formContext.d.ts	Vendored form context typings.
vendor/inertia/packages/svelte/dist/components/createForm.js	Vendored helper to create a typed Form component.
vendor/inertia/packages/svelte/dist/components/createForm.d.ts	Vendored createForm typings.
vendor/inertia/packages/svelte/dist/components/Deferred.svelte	Vendored Deferred component implementation.
vendor/inertia/packages/svelte/dist/components/Deferred.svelte.d.ts	Vendored Deferred typings.
vendor/inertia/packages/svelte/dist/components/WhenVisible.svelte	Vendored WhenVisible component implementation.
vendor/inertia/packages/svelte/dist/components/WhenVisible.svelte.d.ts	Vendored WhenVisible typings.
vendor/inertia/packages/svelte/dist/components/InfiniteScroll.svelte	Vendored InfiniteScroll component implementation.
vendor/inertia/packages/svelte/dist/components/InfiniteScroll.svelte.d.ts	Vendored InfiniteScroll typings.

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