DOC-6574 Job queue use case

[andy-stark-redis]

This PR:

• Adds a new use case example: job queue.
• Updates the existing use cases to give better access to the source files via Github links (previously had links to files in the docs that didn't always lead anywhere useful).
• Adds an agent skill to create new use cases more easily.

Skills are usually described from the perspective of making them sharable. However, a nice, obvious-with-hindsight thing I discovered here is that it's fine to make skills self-modifying if they're only designed to be used from your own repo. You can specify (as part of the skill) that the LLM should reflect on what went right/wrong while using it and add gotchas and good practice suggestions to a file somewhere within the skill folder. So you get a kind of self-sharpening skill that learns from its own usage without any manual instruction to do so.

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Note

Medium Risk
Mostly additive docs and example code, but it introduces a sizable new multi-language job-queue implementation (Lua scripts + concurrency/claim/reclaim logic) where subtle correctness issues could mislead users if wrong.

Overview
Adds a new Job queue use case under content/develop/use-cases/job-queue/, including a landing page and initial per-client implementations (notably full runnable demos for go and dotnet) that cover enqueue/claim, retries, token-guarded complete/fail, and visibility-timeout reclaim (Lua-scripted where needed).

Introduces a new agent skill, redis-use-case-ports, with templates, checklists, and a shared demo HTML template to parallelize and audit future 9-client use-case ports, and updates the use-cases index to link to the new job-queue entry.

^{Reviewed by Cursor Bugbot for commit 4738fa9. Bugbot is set up for automated code reviews on this repo. Configure here.}

[github-actions]

DOC-6574

[github-actions]

Staging links:
https://redis.io/docs/staging/DOC-6574-job-queue-use-case/develop/use-cases/
https://redis.io/docs/staging/DOC-6574-job-queue-use-case/develop/use-cases/job-queue/
https://redis.io/docs/staging/DOC-6574-job-queue-use-case/develop/use-cases/job-queue/dotnet/
https://redis.io/docs/staging/DOC-6574-job-queue-use-case/develop/use-cases/job-queue/go/
https://redis.io/docs/staging/DOC-6574-job-queue-use-case/develop/use-cases/job-queue/java-jedis/

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[dwdougherty]

\0/ a new agent skill! :) LGTM, though I didn't scrutinize code.

[andy-stark-redis]

Thanks @dwdougherty !