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Prepare ElectronicsStoreRollUp for preservation as a known-good version, but do not stage, commit, push, or merge yet.

Show the complete diff and explain every material change. Confirm that accepted source, tests, documentation, and the flight record are included, while credentials, caches, generated output, temporary files, source-data modifications, and unrelated changes are excluded.

Summarize the mission, starting state, files changed, calculations, tests, runtime and browser evidence, reconciliation, limitations, and remaining risks. Propose one concise commit message and wait for approval before staging.

After staging is separately approved, stage only the accepted files, show the staged diff and status, and wait again before committing. Do not push or merge.