Add reference docs for Cache, Task scheduler, and Telemetry

[nscuro]

No description provided.

[Copilot]

Pull request overview

Adds new configuration reference pages for cache behavior, the task scheduler, and telemetry, and wires them into the MkDocs build/navigation.

Changes:

• Enable the Markdown footnotes extension (needed for the new task-scheduler doc).
• Add new reference docs: Cache, Task scheduler, Telemetry.
• Update configuration section navigation and normalize a couple of page titles.

Reviewed changes

Copilot reviewed 7 out of 7 changed files in this pull request and generated 2 comments.

Show a summary per file

File	Description
mkdocs.yml	Enables footnotes Markdown extension for docs rendering.
docs/reference/configuration/cache.md	New page documenting cache providers and TTL configuration.
docs/reference/configuration/task-scheduler.md	New page documenting scheduler behavior, cron format, and built-in tasks.
docs/reference/configuration/telemetry.md	New page documenting telemetry payload, schedule, and opt-out options.
docs/reference/configuration/file-storage.md	Normalizes the H1 title casing.
docs/reference/configuration/datasources.md	Normalizes the H1 title casing.
docs/reference/configuration/.pages	Adds the new pages to the configuration nav and reorders entries.

---

💡 Add Copilot custom instructions for smarter, more guided reviews. Learn how to get started.

[Copilot]

Pull request overview

Copilot reviewed 7 out of 7 changed files in this pull request and generated 3 comments.