[bwees]

Describe your changes

#229 switched the sync request to RoutesV2 and added handlers for RouteV2/RouteDeleteV2, but the zod schema in sync-lines.ts only knows RouteV1. Every sync on main fails with unreadable sync line ... No matching discriminator.

• Adds RouteV2 (with isLoop) and RouteDeleteV2 to syncStreamLineSchema
• Adds a type-level test that the schema covers every SyncEntityType in the OpenAPI spec, so pnpm check fails the next time a line type is added without a schema entry (verified it fails without this fix)

Issue number and link

Regression from #229

Dependency Changes

None

Checklist before requesting a review

• I have performed a self-review of my code
• I have verified that any UI changes I have made work in dark mode
• All of my GitHub checks have passed
• I have added any new packages/updates above
• I have verified that I am not submitting other changes/features outside the scope of my PR