One present blocker plus a few optional nits.

Blocker: skills/bkt/rules/pr.md on this branch head is already drifted from fresh generator output. Running go run ./cmd/docgen -o skills/bkt/rules on a clean checkout adds a trailing newline at EOF — committed is 1368 lines, regenerated is 1369. This isn't a future hazard; the generated artifact on the branch is stale right now. (PR #148's staleness gate will start catching this automatically once it lands, but the drift exists today.) Fix: run make generate-skill from a clean tree and commit the result without any post-processing that strips EOF whitespace — some formatters and pre-commit hooks do.

Everything else looks good:

• Alias is on the leaf newEditCmd, so bkt pr update <id> --title ... inherits all flags and examples for free with zero duplication.
• edit_alias_test.go drives root.NewCmdRoot(factory) + runCLI, so it exercises Cobra's real alias resolution through the root command — right level.
• No subcommand collision: audited all 19 newXxxCmd registrations in pkg/cmd/pr/pr.go, no existing update, no other alias using it.
• The generator already handles Aliases rendering (internal/docgen/generate.go:313-316), so the docs change flowed through codegen rather than being hand-edited.

Non-blocking:

• Consider mentioning the alias in newEditCmd.Long, e.g. "Edit a pull request's title, description, and/or reviewers. Also available as 'pr update'." — carries context into the generated rules prose, not just the **Alias:** line.
• edit_alias_test.go could additionally assert stdout byte-equality between pr edit --help and pr update --help to catch a future refactor that accidentally repoints update at a different command with the same flag shape.
• If agent intuition is the motivator, a follow-up sweep for other verbs (close→decline, reply→comment) would be consistent.

Reviewed the updated diff.

The alias wiring on pr edit looks correct, the generated docs were refreshed, and the tests now cover canonical help, alias help, and output equality. I did not find actionable issues in the current patch.