feat!: remove TanStack, and own the form engine - #241

Stacked on #240 (glass). Review that first; this PR's diff is only the TanStack removal.

Three TanStack packages were the last things pinning this library to Solid 1, and none was earning its place.

solid-table and solid-virtual: shims nothing used

@tanstack/solid-table backed seven public hooks that no component in this library used. createDataGrid already answers the same questions natively — its rows derive filteredRows → sortedRows → pageRows, with selection alongside — so the hooks were a second table engine kept alive only by their own exports. @tanstack/solid-virtual was the same story in one file.

useAnchoredOverlayPosition stays. It never touched TanStack, and a grid still needs to position an overlay against a cell.

solid-form: load-bearing, so replaced

This one was real. FormField rendered <tsForm.Field>, FormSubmitButton rendered <tsForm.Subscribe>, and FormApi was literally { _tsForm: any } — twelve erased generics were part of this library's public type.

The replacement is small because the field components already carry the hard part: Input, Select, Checkbox and the rest own their presentation, state="invalid" and error slot. What was missing is bookkeeping — values, touched, errors, and when to run the schema. Standard Schema is now called directly, which is what TanStack was doing on our behalf anyway.

Two behaviours are explicit rather than inherited:

• errors are gated on isTouched, so a form does not open covered in red
• a failed submit() touches every field, so every error it refused on becomes visible at once rather than one blur at a time

There is a test for the second. The old suite had no way to express it.

Also: ten dead dependencies

Every @solid-primitives/* package was declared in package.json and imported from nowhere — not src, tests, scripts or playground. Removed with the rest. 28 packages leave the install.

Verification

• tsc --noEmit — clean
• bun run check — 90/90 components pass
• bun run build — clean
• bun test — 86/86 pass (was 85; one added for the submit-touches-everything rule)

Breaking changes

useTableModel, useTableSorting, useTablePagination, useTableFiltering, useTableSelection, useTableExpansion, toSortDescriptor, toSortingState and useVirtualRows are removed with their option/result types. Use createDataGrid; row expansion has no replacement yet and is the one capability lost.

FormApi._tsForm is gone, replaced by values(), getFieldValue, getFieldMeta, setFieldValue, validateField, submit(), isSubmitting(), isValid().