Sync from livetemplate@main

[adnaan]

End-to-end validation of the Phase 3 sync workflow.

The workflow successfully cloned livetemplate/livetemplate@main, ran the Go sync tool (cmd/sync), and pushed this branch. PR creation failed at the last step (org policy blocks GITHUB_TOKEN from creating PRs) so I'm opening it manually here to verify the diff.

If this looks right, the workflow needs only a small adjustment to pass a DOCS_BOT_TOKEN PAT to peter-evans/create-pull-request — the actual sync logic is sound. Documented in the next commit.

[Copilot]

Pull request overview

This PR syncs mirrored documentation content from livetemplate/livetemplate@main by updating frontmatter metadata to reflect the latest source commit and aligning page titles with the current upstream docs.

Changes:

• Updated source_commit frontmatter across multiple mirrored guide/reference pages to 5635ad1e....
• Adjusted several frontmatter title values to match current page headings/naming from upstream.
• Rewrote cross-repo CONTRIBUTING links to point to the local docs-site routes under /contributing/*.

Reviewed changes

Copilot reviewed 19 out of 19 changed files in this pull request and generated no comments.

Show a summary per file

File	Description
content/reference/uploads.md	Update mirrored metadata (title + source_commit).
content/reference/template-support-matrix.md	Update mirrored metadata (title + source_commit).
content/reference/session.md	Update mirrored metadata (title + source_commit).
content/reference/server-actions.md	Update mirrored metadata (title + source_commit).
content/reference/pubsub.md	Update mirrored metadata (title + source_commit).
content/reference/navigate.md	Update mirrored metadata (title + source_commit).
content/reference/limitations.md	Update mirrored metadata (source_commit).
content/reference/error-handling.md	Update mirrored metadata (title + source_commit).
content/reference/controller-pattern.md	Update mirrored metadata (title + source_commit).
content/reference/configuration.md	Update mirrored metadata (title + source_commit).
content/reference/client-attributes.md	Update mirrored metadata (title + source_commit).
content/reference/authentication.md	Update mirrored metadata (title + source_commit).
content/reference/api.md	Update mirrored metadata (title + source_commit).
content/guides/standard-html-reactivity.md	Update mirrored metadata (source_commit).
content/guides/scaling.md	Update mirrored metadata (title + source_commit).
content/guides/progressive-complexity.md	Update mirrored metadata (title + source_commit).
content/guides/observability.md	Update mirrored metadata (title + source_commit).
content/guides/ephemeral-components.md	Update mirrored metadata (title + source_commit).
content/contributing/livetemplate.md	Update mirrored metadata and convert external GitHub CONTRIBUTING links to local /contributing/* routes.

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