chore(skills-next): remaining unorganized skills-next content

[evanpurkhiser]

No description provided.

[sentry]

Bug: The documentation for issue.category lists frontend and outage as valid values, but these are not supported by Sentry.
_{Severity: MEDIUM}

Suggested Fix

Update the documentation to replace the incorrect values frontend and outage with the correct list of Sentry issue categories: error, performance, feedback, replay, and cron.

Prompt for AI Agent

Review the code at the location below. A potential bug has been identified by an AI
agent. Verify if this is a real issue. If it is, propose a fix; if not, explain why it's
not valid.

Location: skills-next/references/search-query-language.md#L93-L94

Potential issue: The documentation file `search-query-language.md` incorrectly lists
`frontend` and `outage` as valid values for the `issue.category` search filter. The
actual valid values are `error`, `performance`, `feedback`, `replay`, and `cron`. This
discrepancy will cause systems or users, particularly AI agents relying on this
documentation, to construct invalid search queries, leading to failed searches.

_{Did we get this right? 👍 / 👎 to inform future reviews.}