emit gh-aw.aic as OTLP Sum metric for backend-native consumption

[Copilot]

The platform bills in AI Credits (AIC), not USD. OTLP backends (Sentry, Datadog, Grafana) can natively aggregate and alert on OTel metrics, but gh-aw.aic was only available as a span attribute — not as a consumable metric signal. This change makes AIC a first-class OTLP metric without surfacing any USD cost.

Changes

• actions/setup/js/send_otlp_span.cjs — adds buildOTLPMetricsPayload, sendOTLPMetric, and sendOTLPMetricToAllEndpoints. When aiCredits > 0, the job conclusion span now also posts gh_aw.aic as an OTLP Sum metric (cumulative, monotonic) to /v1/metrics on all configured endpoints. Emission is gated to agent/detection jobs (jobEmitsOwnTokenUsage) to prevent double-counting. The span attribute gh-aw.aic is unchanged.
• actions/setup/js/send_otlp_span.test.cjs — adds coverage for buildOTLPMetricsPayload payload structure and for the three sendJobConclusionSpan metric-emission scenarios (AIC > 0, AIC = 0, non-agent job).
• docs/src/content/docs/reference/open-telemetry.mdx — adds an "OTLP metrics" section documenting gh_aw.aic (Sum, cumulative, monotonic) with its data point attributes.
• specs/otel-observability-spec.md — adds §10.6 "OTLP Metrics Signal" with full metric contract, data point attributes, and aggregation temporality guidance.

The lock.yml files generated by a previous agent run are also removed from this branch — they were noise unrelated to this change.

[mnkiefer]

@copilot Don't surface cost, only aic and consider making it a consumable metric.

[Copilot]

@copilot Don't surface cost, only aic and consider making it a consumable metric.

Done in 6da001e. Removed gen_ai.usage.cost entirely — no USD is surfaced. Instead, gh-aw.aic is now also emitted as a proper OTLP Sum metric (cumulative, monotonic) to /v1/metrics, making it natively consumable by backends without custom field mappings. The span attribute gh-aw.aic is unchanged.

[mnkiefer]

@copilot Revert .github/workflows/test-create-pr-error-handling.lock.yml to main

[Copilot]

@copilot Revert .github/workflows/test-create-pr-error-handling.lock.yml to main

Done — .github/workflows/test-create-pr-error-handling.lock.yml has been restored to its state on main in the latest commit.

[mnkiefer]

@copilot Undo all other unrelated .lock.yml file changes and also update PR body.

[Copilot]

Pull request overview

This PR makes AI Credits (AIC) a first-class OpenTelemetry (OTLP) metrics signal (gh_aw.aic) by emitting it as a cumulative, monotonic Sum to /v1/metrics, enabling backend-native aggregation/alerting without relying on span-attribute extraction.

Changes:

• Add OTLP metrics payload construction + multi-endpoint metric export, and emit gh_aw.aic from the token-usage owning job to avoid double counting.
• Add unit tests covering the metrics payload shape and the emission gating scenarios.
• Document the new OTLP metric contract in both reference docs and the observability spec.

Show a summary per file

File	Description
actions/setup/js/send_otlp_span.cjs	Adds OTLP metrics payload builder/sender and emits gh_aw.aic as an OTLP Sum metric from the conclusion span path.
actions/setup/js/send_otlp_span.test.cjs	Adds tests for metrics payload structure and for sendJobConclusionSpan metric emission gating.
docs/src/content/docs/reference/open-telemetry.mdx	Documents the new gh_aw.aic OTLP metric and its attributes.
specs/otel-observability-spec.md	Specifies the OTLP metrics contract for gh_aw.aic and references it from the span attribute contract.

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• Files reviewed: 4/4 changed files
• Comments generated: 3