Add initialization step logs

[RyanLee-Dev]

The ingress initialization command previously emitted only completion messages, making startup failures difficult to locate. It now uses the shared structured logger to record initialization steps, durations, metadata copies, credential creation or reuse, and the failing step. Logs include revision and trace identity without credential values or digests. Initialization remains offline and preserves existing restart behavior.

Updates deployment guidance and the English and Chinese operations guide.

Validation:

• go test -race ./services/core/cmd/oac and go vet ./services/core/cmd/oac passed.
• Documentation bundle checks, distribution manifest tests, translation checks, and git diff --check passed.
• Local Linux amd64 ingress container checks with networking disabled passed for first initialization, restart, mismatched revision, and modified installation files; checked actual logs for credential leakage.
• Independent diff review found no actionable issues.
• The full distribution target did not pass locally: node tests require a Linux/service-user host setup absent on the macOS host and minimal test container. The locally installed golangci-lint was built with an older Go version and could not run.

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