feat(dashboard-api): HTTP tracing and metrics

[ben-fornefeld]

Summary

• add request tracing middleware to dashboard-api so request logs inherit trace_id and span_id
• add route-level OTEL HTTP metrics middleware for dashboard-api, excluding /health
• align the local middleware shape with the main API service pattern so the new Grafana HTTP panels have consistent metric names and labels

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[cursor]

PR Summary

Medium Risk
Adds new request-level tracing/metrics and a hard request timeout to dashboard-api, which can change request cancellation behavior and metric/log labeling. Also upgrades core dependencies (notably gin and OpenTelemetry) across several services, which may introduce subtle runtime/compatibility regressions.

Overview
Adds OpenTelemetry HTTP tracing and route-level metrics to dashboard-api (excluding /health) so logs inherit trace/span IDs and metrics align with the main API’s naming/labels, and enforces a RequestTimeout middleware for long-running requests. Across services, bumps gin to v1.12.0 and updates OpenTelemetry and related transitive deps, plus switches API services to use shared OTEL middleware packages instead of service-local ones.

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[claude]

Review comments on otel middleware.

[dobrac]

If this is the same implementation as in the API, can we please first move it to shared and reuse it here?

[cursor]

Cursor Bugbot has reviewed your changes and found 1 potential issue.

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[matthewlouisbrockman]

lotta version changes, seems to still work

[ben-fornefeld]

resolving all bugbot comments since i don't want to change the middleware directly in this pr. it just got shared