Adds useId() to the InputField helper in CreateWorkspaceDialog so every
<label> is wired to its <input> via htmlFor/id. Without this, screen readers
announced only the placeholder text, not the field name (WCAG 2.1 SC 1.3.1
Level A violation, build 4JIwTGVMjDGNLO8iMGJeC).
Affected fields: Name (required), Role, Budget limit (USD), Template.
The Hermes provider fields were already correctly wired.
Adds 6 new tests in CreateWorkspaceDialog.a11y.test.tsx verifying htmlFor/id
round-trips for each field and unique-id non-collision (602 total, all pass;
build clean; 'use client' grep empty).
Note: #554 (hydration error UI) and #556 (tier radio arrow-key nav) are
confirmed fixed in commit e70bb94 — audit cycle 2 was run against the
pre-fix build. #557 (zoom-to-team Z key) is a false positive — the handler
IS implemented; closing via Dev Lead once token is refreshed.
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
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