[warp-agent-staging]

Keep the original task log-export error in worker zerolog output so operators can diagnose collector failures. The task-context logger is deliberately bypassed, and OpenTelemetry still receives only task log export failed.

Raw collector errors can contain reflected credentials. These details now appear in operator-controlled worker logs, not task OTLP logs. Trace exporters and initialization/shutdown errors are unchanged.

Validation

• Added an HTTP collector regression test for local diagnostic visibility, an untouched task-context logger, and a sanitized returned error. It fails before the fix and passes afterward.
• Passed go test -race ./internal/tasktelemetry/....
• Passed go vet ./internal/tasktelemetry/..., golangci-lint run ./internal/tasktelemetry/..., and go build ./....
• Applied gofmt -s to both changed files.

Request

[warp-agent-staging]

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