Index the is_error boolean from JSONL tool_result blocks into a new
column, replacing the old ERROR_PATS text-matching approach that
produced ~90% false positives. Bash exit code pattern kept as fallback.
- Replace readFileSync+split with chunked line reader (readLines) to
avoid loading entire JSONL files into memory at once
- Wrap each file's indexing in its own transaction so one corrupt file
doesn't roll back the entire index
- Log warnings to stderr instead of silently swallowing errors in
indexSubagentMeta, indexWorkflows, and indexHistory
- Add try/catch around readdirSync calls in discoverJsonlFiles and
indexWorkflows to survive unreadable directories
- Push error-pattern filtering in failures() into SQL LIKE clauses
instead of scanning all tool_results in JS
tommy0103