docs(fork): carried files for the sync's App push and Renovate off

[teemow]

Problem

Three fork-only commits on top of the pin — ci(fork): open the sync's pull requests in this repository, not the parent, ci(fork): mirror as the App and cancel the runs upstream's files start, chore: declare Renovate off on the fork line — have no row in the carried ledger (#326 lists them as unrecorded).

Proposed solution

One file each under fork/carried/, from the commits' own messages; scripts/fork/carried.sh --check keys them to the commits.

Acceptance criteria

• fork-ledger green.
• The proof for Carried pull requests conflict on FORK.md's last table rows #324: this pull request and docs(fork): carried files for the line's first CI wiring #329 each add files to fork/carried/; after docs(fork): carried files for the line's first CI wiring #329 merges, this one still shows mergeable on GitHub (today both would be DIRTY).

[teemow]

Replaced by #342, rebuilt once off the current giantswarm for the strict base. Closed by the agent working #324.