Add unique job deletion by ID or job value

[reneklacan]

Summary

• add Storage::delete_unique_job for JobId and typed Job inputs
• centralize deterministic unique job ID construction behind UniqueJobId
• atomically remove deleted jobs from waiting queues, scheduled jobs, retries, and current-process tracking
• cover ID deletion, typed job deletion, non-unique rejection, and safe re-enqueueing from every pending state

Verification

• cargo fmt --all -- --check
• cargo clippy --all-features --workspace --all-targets -- -D warnings
• cargo test --all-features --workspace (208 passed, 3 ignored)

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Note

Medium Risk
Touches Redis job-deletion paths used for queue/schedule/retry membership, so incomplete cleanup could leave stale unique-job state. Changes are narrowly scoped and covered by new integration tests.

Overview
Adds Storage::delete_unique_job, so callers can cancel a unique job by either its JobId or a typed Job value without manually reconstructing the deterministic ID.

Introduces a shared UniqueJobId trait that centralizes {job_name}/{unique_id} resolution, and wires envelope creation through it.

Also hardens delete_job to atomically clear membership from waiting queues, the schedule set, retries, and the current processing list—including corrupt payloads—so deleted unique jobs can be safely re-enqueued from any pending state.

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