ref(logging): Decouple async log context

[sentry-junior]

Bind provider-neutral correlation data to a typed async context domain so nested logs and spans inherit it without Slack-shaped logging contracts.

What changed

• log-context.ts now owns the typed LogContext, its telemetry projection, and a strictly scoped runWithLogContext() API.
• removed the public enterWith() mutation path.
• LogTape and the direct-emission fallback consume the same AsyncLocalStorage.
• agent runs bind conversation, destination, user, actor, and run correlation once at the execution boundary; downstream spans and errors only add local fields such as model ID.
• provider-neutral field names preserve existing OpenTelemetry/Sentry attribute names.
• tests cover nested restoration and concurrent isolation.

Checks

• pnpm --filter @sentry/junior typecheck
• pnpm lint
• direct async-context concurrency check
• focused Vitest is blocked locally because Postgres is unavailable at 127.0.0.1:54322; CI exercises the suite.

Requested by David Cramer via Junior.

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Project	Deployment	Actions	Updated (UTC)
junior-docs	Ready	Preview	Jul 23, 2026 1:21am

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