Identity Edit Ratelimits

[linear]

Add the ability to manage identity-level ratelimits through the context menu, applying full replacement model and affecting all keys for that identity.

Acceptance Criteria

Context Menu Update

•  New menu item added to existing context menu:
  • Edit ratelimits... (with gauge icon)
  • Positioned after "Edit metadata..."
•  Menu item opens ratelimits dialog

Edit Ratelimits Feature

•  Dialog opens showing current ratelimits as form fields
•  Each ratelimit displays:
  • Name (text input, required)
  • Limit (number input, min 1, required)
  • Duration (number input in milliseconds, min 1000, required)
  • Auto-apply (checkbox)
  • Delete button (trash icon)
•  "Add Ratelimit" button to add new ratelimit entry
•  Delete button removes ratelimit from form (hidden if only 1 exists)
•  Warning banner: "⚠️ These limits apply to ALL keys for this identity"
•  Inline validation for each field:
  • Name cannot be empty
  • Limit must be positive integer
  • Duration must be >= 1000ms
  • Name must be unique (no duplicates)
•  Validation error messages appear under invalid fields
•  Submit button labeled "Update Ratelimits"
•  Submit button disabled until all fields valid
•  Success toast: "Ratelimits updated successfully"
•  Error toast with user-friendly messages
•  Optimistic UI update (ratelimit count in table)
•  Cancel button closes without saving
•  Ability to remove all ratelimits by deleting all entries
•  Loading state during save

Technical Notes

• Adapt RatelimitSetup component from apps/dashboard/app/(app)/[workspaceSlug]/apis/[apiId]/_components/create-key/components/ratelimit-setup.tsx
• Create wrapper component for identity context
• Create trpc.identity.updateRatelimits mutation
• Full replacement model - send complete ratelimits array

[linear]

ENG-2270