fix(protocol): drop stack traces from DCL error logs

[Apollon77]

Summary

DCL download/update errors logged the full error object, dumping multi-line stack traces for routine transient failures (e.g. DCL timeouts). Now they log the message + cause chain via Diagnostic.errorMessage, no stack.

Before:

INFO DclVendorInfoService Error updating vendor information [dcl-response] Error fetching /dcl/vendorinfo/vendors from DCL: 500 - The operation was aborted due to timeout
    at DclClient.#fetchJson (.../DclClient.ts:97:19)
    at async DclClient.#fetchPaginatedJson (.../DclClient.ts:63:30)
    ... (full stack)
  Caused by: The operation was aborted due to timeout

After:

INFO DclVendorInfoService Error updating vendor information [dcl-response] Error fetching /dcl/vendorinfo/vendors from DCL: 500 - The operation was aborted due to timeout: The operation was aborted due to timeout

Changes

• DclVendorInfoService.ts — vendor-info update failure
• DclOtaUpdateService.ts — OTA image validation/re-download + OTA file read failures

🤖 Generated with Claude Code

[Copilot]

Pull request overview

This PR reduces log noise in the DCL (Distributed Compliance Ledger) integration by avoiding multi-line stack traces for routine/transient failures, logging a concise message plus the cause chain via Diagnostic.errorMessage(...) instead.

Changes:

• Update DclVendorInfoService to log vendor update failures using Diagnostic.errorMessage(asError(error)) instead of logging the raw error object.
• Update DclOtaUpdateService to log OTA validation/re-download and OTA file read failures using Diagnostic.errorMessage(asError(error)) (and add the needed asError import).

Reviewed changes

Copilot reviewed 2 out of 2 changed files in this pull request and generated 1 comment.

File	Description
packages/protocol/src/dcl/DclVendorInfoService.ts	Replace raw error logging with Diagnostic.errorMessage(asError(...)) for vendor update failures to avoid stack traces.
packages/protocol/src/dcl/DclOtaUpdateService.ts	Replace raw error logging with Diagnostic.errorMessage(asError(...)) for OTA validation and OTA file read failures; add asError import.

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