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CSV content stays in this page
The worksheet has no file upload. CSV text, headings, column IDs, rows, filenames, mappings, results, and manifest contents are not transmitted and remain in page memory unless you explicitly download the local JSON manifest.
Optional measurement remains off until one trusted allow decision for the open page. Deny does not load the provider. After allow, the controls close and the choice cannot be changed or described as provider unload or withdrawal. The choice and event deduplication stay only in JavaScript memory and disappear on reload or close.
If allowed, only tool_start and tool_complete are sent without payload fields. The provider still receives ordinary connection metadata such as IP address and browser headers and may set cookies. Automatic hits or pageviews, autoGoals, replay, clickmap, link tracking, hash tracking, and title collection are disabled.
tool_complete means only that the user exported a complete, conflict-free, explicitly confirmed one-to-one mapping manifest for the exact current input and mapping snapshot. It does not mean semantic correctness, migration safety, or import success. Sample, QA, default, programmatic, invalid, unknown, unmapped, conflicting, stale, and reset flows cannot complete.