chore(webapp): upgrade @conform-to to v1

[carderne]

Summary

Upgrades the dashboard form layer from @conform-to 0.9 to 1.x. No behaviour change is intended; this is the conform API migration only.

conform 1.x peer-depends on zod ^3.21 || ^4, so it runs on the current zod 3 and is a prerequisite for upgrading the repo to zod 4: conform 0.9 imports ZodNativeEnum, ZodEffects, and ZodPipeline, all removed in zod 4, so the webapp cannot build against zod 4 until conform is on 1.x. Landing this first (on zod 3) keeps the zod 4 PR focused on zod alone.

Migration

The standard 0.9 to 1.x API changes across the form files: parse to parseWithZod, the conform.* helpers to getInputProps/getFormProps/etc., useFieldList/useFieldset to field.getFieldList()/field.getFieldset(), list/requestIntent to the form.insert/form.remove intents, immutable submission.reply({ fieldErrors }) in actions, and field.error (string) to field.errors (string[]).

Verified locally: webapp typecheck and build are green, and the full repo typecheck passes. There are no conform unit tests; form behaviour still needs manual/E2E QA before this comes out of draft.

TODO before merging

• test a lot more

[changeset-bot]

⚠️ No Changeset found

Latest commit: e5d7cff

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[coderabbitai]

Walkthrough

The PR upgrades the webapp to Conform 1.x. It updates shared components and many routes to use parseWithZod, getFormProps, getInputProps, getSelectProps, getTextareaProps, lastResult, fields, form.insert, form.remove, and submission.reply()-based validation and error handling. It also updates apps/webapp/package.json and adds a change-log entry in .server-changes/conform-v1.md.

🚥 Pre-merge checks | ✅ 3 | ❌ 2

❌ Failed checks (2 warnings)

Check name	Status	Explanation	Resolution
Docstring Coverage	⚠️ Warning	Docstring coverage is 2.00% which is insufficient. The required threshold is 80.00%.	Write docstrings for the functions missing them to satisfy the coverage threshold.
Description check	⚠️ Warning	The PR description has a solid summary and migration details, but it omits the required Checklist, Testing, Changelog, and Screenshots sections.	Add the template sections with completed checklist items, testing steps, a short changelog, and screenshots or state that none are needed.

✅ Passed checks (3 passed)

Check name	Status	Explanation
Title check	✅ Passed	The title clearly and concisely summarizes the main change: upgrading @conform-to to v1 in webapp.
Linked Issues check	✅ Passed	Check skipped because no linked issues were found for this pull request.
Out of Scope Changes check	✅ Passed	Check skipped because no linked issues were found for this pull request.

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✨ Finishing Touches

📝 Generate docstrings

• Create stacked PR
• Commit on current branch

🧪 Generate unit tests (beta)

• Create PR with unit tests
• Commit unit tests in branch chore/conform-v1

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[devin-ai-integration]

Devin Review found 0 new potential issues.