Add xlsx url source for testing#11

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frozenhelium wants to merge 3 commits into

feat/xlsx-url-source

Commits on Jul 9, 2026

feat(source): add XLSX-from-URL mock mode for QA instances
frozenhelium
committed
refactor(naming): make identifiers clear and consistent
frozenhelium
committed
refactor(http): extract isHTTPSuccess helper for 2xx checks
frozenhelium
committed