docs: describe uuid schema by format instead of RFC 4122

Author: bug3

README.md

@@ -107,7 +107,7 @@ const { sql } = getEvents({
 | `schema.isoDate` | `YYYY-MM-DD` | `'2022-02-22'` |
 | `schema.isoTimestamp` | ISO 8601 with timezone | `'2022-02-22T22:02:22.000Z'` |
 | `schema.identifier` | SQL identifier (up to `db.schema.table`) | `'public.users'` |
-| `schema.uuid` | RFC 4122 UUID | `'550e8400-e29b-41d4-a716-446655440000'` |
+| `schema.uuid` | UUID hex format (8-4-4-4-12) | `'550e8400-e29b-41d4-a716-446655440000'` |
 | `schema.positiveInt` | Positive integer | `100` |
 | `schema.enum(...)` | Whitelist of allowed values | `schema.enum('asc', 'desc')` |
 | `schema.s3Path` | S3 URI | `'s3://athena-results/queries/'` |

llms.txt

@@ -55,7 +55,7 @@ Schema mode validates at define-time (schema keys must match template tokens) an
 - `schema.isoDate` - YYYY-MM-DD with calendar validation
 - `schema.isoTimestamp` - ISO 8601 with timezone (e.g. 2022-02-22T00:00:00Z)
 - `schema.identifier` - SQL identifier, up to 3 dot-separated parts (db.schema.table)
-- `schema.uuid` - RFC 4122 UUID
+- `schema.uuid` - UUID hex format (8-4-4-4-12 hex digits)
 - `schema.positiveInt` - integer greater than 0
 - `schema.enum(...values)` - whitelist of allowed string values
 - `schema.s3Path` - S3 URI (s3://athena-results/queries/)