Use one bound JSON selection set for inventory metadata, keeping raw-name byte
comparison and filtering inside SQLite while preserving caller projection order
and repetition. Large requests reach native result-column capacity attribution.
Separate unavailable row sources from generated-expression failures. Preserve
SQLite's reason and selected table/path, offer schema-only recovery, and avoid
claiming corruption or recommending unreadable columns.
Validated UTF-8/UTF-16 identity, native inspection/worker tests and CLI/MCP failure
and recovery workflows. The large CLI selection uses the existing framed CLI
fixture to avoid host argv limits. Source bytes and identity remain unchanged.
Fixes#6855Fixes#6604
Read raw column metadata through the built-in PRAGMA in the private empty temp schema. Validate bytes before names become SQL identifiers, and select inventory subsets by exact encoded identity so unrelated malformed names cannot alias valid columns.
Validation: 5 focused identity controls; 15 selected producer/provider controls (33 skipped); public CLI baseline collision, fixed format refusal and valid-subset success; check:fast and docs:check. Generated inert SQLite fixtures on macOS arm64 with Node 24.18.0; no Windows qualification or large-file/stress workload.
Refs #4710
morluto