有可能panic

The issue only says "possible panic" and includes only an image reference, so no target file, test, or exact failing step is provided. Start by reading the repository README, reproducing the panic locally, and running `go test ./...` to capture full Go panic output. Then trace the panic to a specific backend code path before proposing any change. Mark it done only if you can document a reproducible case, fix it, and validate with a regression test or explicit manual verification steps.

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