b5c8a3e590
Phase 1 of approved feature #1817. Implements the body-structure derivability contract landed in ADR-1817 (Phase 0, PR #1828). Source changes (src/state-transition.cts): - Add `rebuild` as the 11th intent in StateTransitionIntent (ADR-1769 transition set extended per ADR-1817 §1). - Add `phaseInventoryProvider` optional dep + PhaseInventoryRecord type (Leaky-Abstractions guard: pure core stays testable without disk I/O; rebuild skips table reconciliation when the provider is absent). - Add `case 'rebuild':` dispatch arm to transitionCore (the missing-case compile-time guarantee extends to the 11th case). - Implement rebuildCore orchestrator + four drift-class helpers per ADR-1817 §2: * reconcileCurrentPosition — body prose re-derived from frontmatter * reconcileByPhaseTable — **By Phase:** table re-derived from disk inventory via the new dep * stripTemplatePlaceholders — `**Field:** [placeholder]` → `**Field:** (pending)` (no canonical source available) * deduplicateSessionArchive — keep most-recent 3 archived H3 blocks - Implement appendRebuildLogSection per ADR-1817 §3 — every mutation appends a structured entry (timestamp/kind/section/before/after/reason) to `## Rebuild Log`. Idempotency guarantee (ADR-1817 §4): a no-mutation rebuild appends NO log entry, so two successive runs on a clean file are byte-identical. Compiled output (gsd-core/bin/lib/state-transition.cjs): regenerated via `npm run build:lib` (tsc -p tsconfig.build.json). Tests (tests/state-rebuild.test.cjs, 18 cases): - Dispatch + idempotency contract (3 tests, including the load-bearing 'rebuild on a clean file is a no-op' that pins §4). - Current Position prose reconciliation, criterion #1 (3 tests). - Template-placeholder removal, criterion #3 (3 tests). - Session Continuity Archive de-duplication, criterion #4 (4 tests). - **By Phase:** table reconciliation via phaseInventoryProvider, criterion #2 (3 tests, including the Leaky-Abstractions no-op guard). - Regression guard for sync + prune, criterion #7 (2 tests). Verified: node --test tests/state-rebuild.test.cjs → 18/18 pass. Verified: node --test tests/state-transition.test.cjs → 85/85 pass (no regression on the existing 10 transitions). Phase 2 (#1826) wires the CLI surface (cmdStateRebuild + --dry-run + integration tests + docs + changeset). This PR adds the engine only — no user-visible command yet, so no-changelog label applied.
GSD Core
Git. Ship. Done.
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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.
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:
- Discuss — capture implementation decisions before anything is planned
- Plan — research, decompose, and verify the plan fits a fresh context window
- Execute — run plans in parallel waves; each executor starts with a clean 200k-token context
- Verify — walk through what was built; diagnose and fix before declaring done
- 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
License
MIT License. See LICENSE for details.
Claude Code is powerful. GSD Core makes it reliable.