feat(v2-tables): paginate the table list

`GET /api/v2/tables` returned every table in the workspace in one response —
it used the cursor envelope but hardcoded `nextCursor: null`, and had no
`limit`. That was defensible when tables were only created through the UI;
`POST /api/v2/tables` is public now, so a script can create them in bulk and
the list has no way to ask for less.

Adds `queryTables` alongside `listTables` rather than changing it, so the
internal callers that genuinely want the whole scope are untouched — the same
split `queryWorkspaceFiles` / `listWorkspaceFiles` already uses. Filter, order
and slice all run in the query, so a `search` never costs a full-workspace read.

A cursor whose values don't bind raises a validation error instead of being
coerced to "no filter", which would have silently served page 1 under a resumed
cursor. The keyset closes on `id` so a page boundary inside a run of equal names
or timestamps stays stable.

The shared `LimitQuery` doc component said "Maximum rows to return"; it now
serves the table list too, so the wording is resource-neutral.

Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>

Author: TheodoreSpeaks