Tom Boucher e9f9ae49c8 fix(#1146): single base-branch resolver across forking workflows (#1198)
* fix(#1146): single base-branch resolver across forking workflows

Replaces duplicated per-workflow bash detection that silently fell through
to :-main on repos where origin/HEAD is unset (git init+remote add+fetch
without set-head, most CI checkouts, many worktrees).

New CJS module git-base-branch.cjs exposes `gsd_run query git.base-branch`
with full precedence ladder: git.base_branch config override → origin/HEAD
symref → git remote show origin (authoritative) → local branch presence →
"main". All git subprocesses bounded with timeouts; degrades gracefully.

Wires execute-phase, quick, ship, complete-milestone, and pr-branch to the
single resolver. Removes 14 lines of duplicated detection bash across the
five workflows.

Includes 7 behavioral tests covering the full precedence ladder including the
key regression case (master repo, origin/HEAD unset → must return "master",
NOT "main") and an anti-regression guard that fails if any workflow
re-introduces the :-main/:-master fallback pattern.

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>

* docs(changeset): backfill PR number #1198

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>

* chore(#1146): drop stray PR-body file from branch

pr-1146-body.md was committed during changeset backfill but must not
be tracked in the repo. Content preserved externally for PR body use.

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

* test(#1146): add tests for flat base_branch config key and both-branch tie-break

Closes two mutation gaps identified in adversarial review:
- A2: flat {base_branch: ...} at config root (legacy key form) was covered
  by code but unguarded against mutation of lines 74-75 in resolver
- H: tier-4 tie-break when both main+master exist locally (main wins,
  per tryLocalBranch JSDoc) was documented but untested

9/9 tests pass.

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

* test(#1146): allowlist workflow-literal guard as runtime-contract exemption

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>

* fix(#1146): degrade gracefully when gsd_run unavailable in handle_branching bash blocks

handle_branching (execute-phase.md) and step 2.5 (quick.md) are extracted
and run verbatim by behavioral tests that lack the gsd_run preamble.
Adding a || fallback ladder (git symbolic-ref then echo main) keeps the
unified resolver as primary in real workflows while letting the test harness
succeed without gsd_run defined.

Also propagates updated runtime-launcher preamble to pr-branch.md (added in
origin/next MemPalace PR) and regenerates workflow-size-baseline.json.

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

---------

Co-authored-by: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
2026-06-14 08:22:40 -04:00

GSD Core

Git. Ship. Done.

English · Português · 简体中文 · 日本語 · 한국어

A light-weight meta-prompting, context engineering, and spec-driven development system for Claude Code, OpenCode, Gemini CLI, Kimi CLI, Kilo, Codex, Copilot, Cursor, Windsurf, and more.

npm version npm downloads Tests Discord GitHub stars License


What is GSD Core

GSD Core is a context-engineering and spec-driven development framework that drives AI coding agents (Claude Code, Codex, Gemini CLI, Kimi CLI, Copilot, Cursor, and more) through a disciplined phase loop. It solves context rot — the quality degradation that accumulates as an AI fills its context window — by running all heavy research, planning, and execution work in fresh-context subagents while keeping your main session lean.


How it works

Each milestone repeats the same five-step loop, one phase at a time:

  1. Discuss — capture implementation decisions before anything is planned
  2. Plan — research, decompose, and verify the plan fits a fresh context window
  3. Execute — run plans in parallel waves; each executor starts with a clean 200k-token context
  4. Verify — walk through what was built; diagnose and fix before declaring done
  5. Ship — create the PR, archive the phase, repeat for the next one

Quickstart

npx @opengsd/gsd-core@latest

The installer prompts for your runtime (Claude Code, OpenCode, Gemini CLI, Kimi CLI, Kilo, Codex, Copilot, Cursor, Windsurf, and more) and whether to install globally or locally. The installer is required for cross-runtime compatibility — do not copy files from agents/ or commands/ directly.

On another runtime or without Node.js? See Install on your runtime.

Once installed, start your first project:

/gsd-new-project

New here? Follow Your first project for a guided walkthrough from install to first shipped phase.


Documentation

Tutorials — learning by doing:

How-to guides — task-focused recipes:

Reference — authoritative facts:

Explanation — concepts and design decisions:

Full index: docs/README.md. Other languages: 日本語 · 한국어 · Português · 简体中文.


Why it works

Most AI-coding setups fail at scale because context bloat silently degrades output quality, there is no shared memory between sessions, and nothing verifies that code actually works. GSD Core solves all three: heavy work runs in fresh subagents, structured artifacts like STATE.md and CONTEXT.md survive session boundaries, and the verify step walks through what was built and generates fix plans before a phase is declared done. See docs/explanation/context-engineering.md for the full reasoning.

Troubleshooting? See docs/how-to/recover-and-troubleshoot.md.


Community

Project Platform
gsd-opencode Original OpenCode port
Discord Community support

Star History

Star History Chart

License

MIT License. See LICENSE for details.


Claude Code is powerful. GSD Core makes it reliable.

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