CONTEXT OPS · BROWSER-LOCAL FLAGSHIP
Data and Log Preparation Workbench
Prepare bounded data and debugging evidence with explicit transforms, literal log reduction, local-file chunking, exact receipts, and no automatic run.
BROWSER-LOCAL · EXPLICIT RUN · PRESERVE ORIGINALS
Choose one bounded preparation lane
Paste structured text, reduce literal log neighborhoods, or inspect and select records from one local file. Selection and samples are inert: Nothing has run until you use a run, preview, or apply button.
LANE 1
Convert and prepare tabular records
CSV, TSV, JSON, and JSONL are admitted strictly. The source is never overwritten; prepared output is published separately.
Advanced explicit transform plan
Operations run in the exact order shown. Only trim, explicit null mapping, selected type conversion, rename, keep/drop, stable exact dedupe, and one stable scalar sort are admitted.
- No transforms selected; admitted order and values will be preserved.
LANE 2
Reduce literal log neighborhoods
Literal markers only. No regex, monitoring, model call, or inferred root cause.
LANE 3
Inspect metadata, then select bounded local records
The file stays in this browser. Size is checked before the first bounded chunk read. Choosing a file reveals metadata only and never starts processing.
No file selected. Nothing has run.
Nothing has run. Choose a lane, review the source, then run explicitly.
CURRENT GENERATION
Progressive output and exact evidence
Prepared output
Exact receipt
Malformed rows, rejections, and omissions
Export only this valid explicit run
Incomplete or truncated evidence is rejected with INCOMPLETE_EVIDENCE. Every mutation clears reports, packs, receipts, copy state, and owned downloads.
Hosted text handoffs (optional and inert)
Hosted equivalents accept only bounded text you intentionally submit. This local-file lane has no hosted equivalent, and these links do not carry source data.