Filter backtick and tilde fenced examples before locating the E2E scenario-card table, so illustrative Markdown cannot satisfy the mechanical gate or shadow a later real table.\n\nParse only the documented leading/trailing-pipe row form and require a same-width delimiter row whose cells contain at least three hyphens with optional alignment colons. Missing or malformed delimiters now remain check failures instead of being silently treated as data.\n\nThe process-level harness records RED reproductions for both false-pass forms, fenced-only tables, and fenced examples before real tables, then verifies the focused GREEN behavior and prior contracts.
