Vigilante Rush Monorepo Issue Implementation

Overview

Implement one GitHub issue from Vigilante dispatch through validated code changes, a pushed branch, and an opened pull request from the provided worktree. Always work inside the assigned worktree, respect repository instructions, and keep the GitHub issue updated with start, plan, progress, PR, and failure comments.

Rush Focus

• Read the repo/process context supplied in the prompt before changing code.
• Confirm Rush signals such as rush.json, project folders, and workspace roots before choosing commands.
• Identify the smallest affected package or app scope first and keep that scope explicit in validation and progress updates.
• Prefer Rush-native commands and repo-defined scripts over generic workspace guesses.
• If the affected package or app needs local services, call the bundled vigilante-local-service-dependencies skill and prefer the repository's docker-compose-launch flow when it exists.

Workflow

1. Inspect issue and repository constraints

• Read the issue details supplied by Vigilante and confirm the issue scope before coding.
• Read development constraints from repository markdown files before making changes:
• AGENTS.md when present
• README.md
• other root or package-specific docs that affect touched files
• If repository instructions conflict, follow the more specific instruction.

1. Announce session start on GitHub

• Post a comment on the issue as soon as work begins using vigilante gh issue comment.
• Include that Vigilante launched the session, the working branch, and that implementation is in progress.

1. Post an implementation plan early

• After inspecting the issue and repository constraints, post a concise implementation plan to the issue using vigilante gh issue comment.
• The plan comment should name the likely Rush package or app scope when it is already clear, or state that scope detection is the next step.

1. Detect a stacked base branch

• Scan the issue body for an explicit, single-line directive of the form Base branch: <branch-name> (label is case-insensitive; <branch-name> is trimmed and may be surrounded by backticks).
• Only honor the directive when it appears as its own top-level line in the issue body. Do not infer a stacked base from prose or sub-issue links.
• If no directive is present, branch from and target the watch target's base branch as today.
• When the directive is present:
• Run git fetch origin <base> inside the assigned worktree before code changes.
• If the fetch fails because the branch does not exist on the remote, stop work, post a failure comment on the issue, and do not silently fall back to the default branch.
• Re-root the work branch onto origin/<base> with git reset --hard origin/<base> (no commits yet) or git rebase origin/<base> (commits present).
• Use <base> as the PR target later and mention it in the implementation-plan comment.

1. Implement inside the assigned worktree only

• Use only the provided worktree path.
• Never edit the root checkout when a worktree was assigned.
• Keep changes scoped to the issue.
• Prefer native repository tooling and avoid unnecessary new dependencies.
• When multiple Rush projects exist, determine the relevant package or app before making broad edits.

1. Validate incrementally with Rush-compatible commands

• Prefer targeted Rush validation for the affected package or app, such as repo-defined rush test, rush build, rushx, phased commands, or package-level scripts invoked through Rush-compatible flows.
• Avoid full-repo validation unless the repository workflow requires it or targeted validation is unavailable.
• If validation fails, first inspect the per-issue session log with vigilante logs --repo <owner/name> --issue <n> to determine whether the problem is in the code, test setup, or environment before retrying.

1. Commit, push, and open a pull request

• Use vigilante commit for all commit-producing operations. Do not use git commit or GitHub CLI commit flows directly.
• Commit only issue-relevant changes in the assigned branch.
• Any commit or amend must preserve the user's existing git author, committer, and signing configuration. Commit on behalf of the user and do not overwrite git config with a coding-agent identity.
• Do not add Co-authored by: trailers or any other agent attribution for Codex, Claude, Gemini, or similar coding-agent identities.
• Push the assigned branch to the remote.
• Open a pull request targeting the repository default branch unless the issue specified a stacked base branch in step 4 or other repository instructions say otherwise.
• When a stacked base branch was specified, pass --base <base> to vigilante gh pr create and state in the PR body and the PR-opened issue comment that the PR is stacked on <base>.

1. Report progress and failures clearly

• Use vigilante gh issue comment for progress updates, milestone updates, PR creation, and execution failures.
• If execution is blocked, validation fails, or a resumed session is unclear, inspect vigilante logs --repo <owner/name> --issue <n> before retrying or reporting the blocker.
• A Base branch: directive that points at a branch missing from the remote is a blocker: comment a failure on the issue and stop instead of falling back to the default branch.
• Keep comments concise, factual, and tied to real progress.