WIP: feat: add jobs DLQ attempts and lease history views

[ralphschuler]

Summary

Adds a read-only admin job views slice for Jobs and Replay/DLQ operators.

Changes

• Adds /admin/api/v1/job-views for scoped, read-only job summaries, DLQ entries, attempt history, and lease history.
• Keeps raw payloads, idempotency keys, job metadata, constraints, and failure messages out of admin responses by default.
• Adds SSR copy for /admin/jobs and /admin/replay-dlq explaining read-only views and disabled mutation/redrive controls.
• Fixes admin section lookup so path-style admin ids resolve correctly.
• Adds behavior tests for admin API auth, read-only data shape, redaction, and SSR route copy.

Validation

• yarn workspace @helix/control-plane test -- admin-ssr job-views
• yarn workspace @helix/control-plane check
• yarn validate

Risks/Rollback

• Risk: this is intentionally read-only and omits raw payload/log detail; future operator UX may need dedicated safe detail endpoints.
• Rollback: revert this commit to remove the admin job views endpoint, route copy, and tests.

Related Issues

Closes #77

Conversation Context

Implemented as a behavior-first vertical slice for issue #77: expose jobs, DLQ, attempt, and lease history to admins without enabling mutation controls or exposing raw payload/log data.