Reuse the bounded fence filter for every scenario-card structural check so headings, coverage text, and falsification prose inside examples cannot satisfy the gate. Valid cards may still contain unrelated fenced examples.\n\nTreat each Card cell as a filename stem: remove at most one enclosing backtick pair, require lowercase kebab case, and reject invalid values before they can be stored or joined to the cards directory. This blocks parent traversal, subdirectories, uppercase names, and empty segments.\n\nAdd real-process RED/GREEN coverage for fenced-only cards, traversal, invalid stems, preserved backtick behavior, and the explicit diagnostic for intentionally unsupported pipe-less tables.
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.
