feat: add build_supervised_worker macro

[0xgleb]

Motivation

Every consumer wiring a job worker should get the same concurrency, retry
policy, circuit breaker, and terminal-failure handling without re-deriving it.
ADR-0001 puts that wiring behind a macro in event-sorcery.

Solution

• build_supervised_worker!(::<Job>, index, backend, input, fail_stop, failure_notify[, injector]) builds a WorkerBuilder with concurrency 1, 3
  retries + RETRY_BACKOFF, a circuit breaker, on_terminal_failure, and the
  work::<J> handler; under test-support it also wires a FailureInjector.
• The registered worker name is {WORKER_NAME}-{index}.
• Re-exports Monitor and CircuitBreakerConfig, plus a hidden __apalis
  module holding the apalis items the macro expands to, so consumers need no
  direct apalis dependency.
• Test: the macro constructs a worker over an in-memory backend.

Closes RAI-916.

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📥 Commits

Reviewing files that changed from the base of the PR and between 6427003 and 359f1aa.

📒 Files selected for processing (3)

• AGENTS.md
• crates/event-sorcery/src/job.rs
• crates/event-sorcery/src/lib.rs

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[0xgleb]

Warning

This pull request is not mergeable via GitHub because a downstack PR is open. Once all requirements are satisfied, merge this PR as a stack on Graphite.
Learn more

• adr: gradual consumer migration from services to jobs #19
• docs: migrate docs to the jobs model #20
• feat: migrate examples to the jobs model #16
• feat: replace EventSourced::Services with Jobs and wire atomic enqueue #15
• feat: add buffered JobQueue and apalis enqueue #14
• feat: add build_supervised_worker macro #13 👈 (View in Graphite)
• feat: job worker #12
• feat: add job module #11
• adr: jobs replace services #8
• fix: sink events as they happen #24 : 1 other dependent PR (#25 )
• master

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[linear-code]

RAI-916

[findolor]

Approved.