Open PR

Input: [base-branch] [--ready] [--dry-run]

Base: the input, else the repository's default branch as reported by the remote. Draft unless --ready. Invalid base, current branch equal to base, or empty diff: stop.

Read the branch diff, its commits, the repository's PR rules, and existing verification evidence. An open PR for this branch exists: report its URL and stop. Uncommitted changes are not part of the PR; report them without staging or committing.

Title: the repository's convention, normally at most 70 characters. Body:

• Why.
• Changed behavior.
• Shape of the change, when it alters a structure (call flow, file layout, component tree, types): one diff of that structure.
• Verification: checks that actually passed, apart from checks proposed for reviewers. Never infer tests from file existence.
• Risks and rollback. Never promise rollback is harmless.
• Migration or breaking-change details, when present.

--dry-run: print the title and body and stop. Otherwise the request authorizes a normal push if needed and PR creation. Local and remote branch diverged: stop. Never force-push or bypass repository checks. Pass the body through a file or safely quoted input. Assign as the user's rules say. Report the URL and any blockers.