refactor: implement tanstack form for all forms

[raae]

No description provided.

[Copilot]

Pull Request Overview

This PR refactors multiple route components to use @tanstack/react-form instead of local useState for form state management. The changes introduce form validation with zod, auto-apply functionality for existing embeds, and better button states based on mutation status.

• Migrates state management from useState to @tanstack/react-form across all route components
• Adds form validation using zod schemas with custom refinement rules
• Implements auto-apply pattern that triggers mutations when form values change on existing embeds

Reviewed Changes

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

Show a summary per file

File	Description
src/routes/user.index.tsx	Replaced tab state management with form, added auto-apply on tab change
src/routes/support.index.tsx	Added minimal form integration for consistent submission handling
src/routes/lead-capture.index.tsx	Migrated uid state to form with validation, added auto-apply pattern
src/routes/email-list.index.tsx	Migrated uid state to form with validation, added auto-apply pattern
src/routes/auth.login.tsx	Added form integration for submission handling
src/routes/auth.index.tsx	Complex migration of multiple fields (preselect, familyUid, planUid, discountCode) to form with validation refinements

Comments suppressed due to low confidence (2)

src/routes/email-list.index.tsx:59

• Unused variable cfg.

      const cfg: EmailListEmbedConfig = { uid: value.uid };

src/routes/lead-capture.index.tsx:58

• Unused variable cfg.

      const cfg: LeadCaptureEmbedConfig = { uid: value.uid };

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[Copilot]

The cfg variable is defined but never used. The embedMutation uses the config variable defined at line 76 instead. Either remove the unused cfg variable or pass it to the mutation if it was intended to use the form's submitted value.

Suggested change

	await embedMutation.mutateAsync();
	await embedMutation.mutateAsync(cfg);

[Copilot]

The cfg variable is defined but never used. The embedMutation uses the config variable defined at line 78 instead. Either remove the unused cfg variable or pass it to the mutation if it was intended to use the form's submitted value.

Suggested change

	await embedMutation.mutateAsync();
	await embedMutation.mutateAsync(cfg);