Tom Boucher ed360cd99f chore(#2995): extend fragment emission to agents/ and reclaim size-cap headroom (#3058)
* feat(#2995): extend fragment emission to agents/ across every read point

Epic #1671 Phase 6.4. `composeWorkflow` stripped `<!-- gsd:section -->` markers
only for `gsd-core/workflows/`, so a marked agent shipped its markers verbatim
into every runtime — and agent text is loaded into a subagent's context on every
dispatch.

The issue proposed widening the `copyWithPathReplacement` guard. That is a no-op
for agents: agents never traverse that function. Agent content is read for
emission at five independent points, and the obvious chokepoint
`stageAgentsForProfile` short-circuits on the DEFAULT `full` profile
(`skills === '*'` returns the real unstaged directory), so a hook placed there is
dead code on most installs.

Composition now happens at two call sites instead of five parallel surfaces:
`stageAgentsForRuntimeWithConverter` (with `agentsKind` and `kimiAgentsKind`
routed through it via an identity converter) and the inline agent loop in
bin/install.js. Both compose BEFORE any path rewrite, so a `.claude/` ->
`.windsurf/` regex can never reach inside a marker attribute — the ordering
#2930 established for workflows.

`installCodexConfig` was the fifth read point: Codex embeds each agent's prompt
into a per-agent `.toml` via its own readFileSync. Call-graph analysis missed it;
the exhaustive per-runtime emission sweep found it. That is why the new guard is
behavioral rather than structural — a sixth read point fails the sweep without
anyone remembering to extend a list.

tests/agent-fragments-emission.install.test.cjs spawns a real installer for every
runtime at every agent-bearing scope, derived from RUNTIME_META and the
capability registry at run time so a new runtime cannot be silently
under-covered. It asserts markers are absent AND the `when="always"` body is
retained, so marker-absence cannot be satisfied by dropping content. An
identity-composer negative control proves the assertion can fail.

Verified: 0 install failures, 0 marker leaks, body retained on 27 runtime/scope
paths; red before the wiring on claude(global+local), zcode(global+local),
kimi, codex and opencode.

Refs #2995

* chore(#2995): give the tightest agents headroom and correct the design lock

Epic #1671 Phase 6.4, second half.

`agents/gsd-verifier.md` had 12 bytes of headroom under its 49,152-byte LARGE
cap and `agents/gsd-debugger.md` had 147 under its 57,344-byte XL cap. Both now
extract reference material to `gsd-core/references/` behind an @-reference — the
documented DEFECT.AGENT-FILE-SIZE-CAP-BREACH remedy:

  gsd-verifier  49,140 -> 46,371 B   headroom    12 -> 2,781
  gsd-debugger  57,197 -> 48,851 B   headroom   147 -> 8,493

Byte accounting proves no content was lost: the combined agent+reference delta
is exactly the new files' headers plus the agents' slim replacement blocks. Each
agent keeps its routing table and a one-line summary per entry, so it degrades
gracefully on a runtime that does not inline @-references.

`agents/gsd-planner.md` is untouched and still passes both char guards
(49,130 < 49,152); it needed no change, so it took none.

The other nine LARGE/XL agents carry NO gsd:section markers, and that is
deliberate, not deferred. `when=` selection is read from
gsd-core/workflows/section-manifest.json, which gen-section-manifest.cjs derives
from gsd-core/workflows/*.md only — shape `{workflows: ...}`, no per-agent key,
no per-agent init entry point. An agent atom therefore fails admission gate (2)
("a fact the init seam demonstrably computes at a real entry point") and would
evaluate false forever while looking like working gating. Marking agents would
manufacture exactly the silent-inertness rot the frozen vocabulary exists to
prevent.

ADR-1671 gains three amendments, two of which close gaps /adr-phase-coverage
found against what actually merged:

  - The 19 -> 29 vocabulary widening shipped in #2994 with no coordinated ADR
    amendment, which that bullet's own rule forbids. Recorded now.
  - `flag:--verify-only` was one of six atoms #2992 withheld and deferred to
    "the LARGE/XL rollout phase". Five shipped; this one is permanently
    rejected, and that disposition lived only in a merged PR body.
  - Phase 6.4's own finding: emission extends to agents/, gating does not.

CONTEXT.md's glossary was stale on both seams — Workflow Fragments Module still
listed the original 4-atom vocabulary and described when= as "not yet acted on",
and Section Manifest Module still described InvocationFacts as
{waveFlag, phaseNumber, hasPriorPhases}. Both now match the shipped contract.

Inventory manifest regenerated AFTER build:lib per the documented ordering
landmine; 19 install-tree fixtures pick up the two new references.

Refs #2995

* chore(#2995): correct the compose-site count and mark the raw stager

Self-review found two comment defects in the prior commit. The agentsKind
comment claimed composition lands at TWO call sites; it is three, since
installCodexConfig's per-agent .toml writer was added after that comment was
written. And stageAgentsForProfile is now production-dead — both callers route
through the composing stager — while staying exported and unit-tested, which
makes it a trap: it does a raw copyFileSync and short-circuits to the unstaged
source directory under the default profile, so a future caller would silently
reintroduce the marker-shipping path. Its JSDoc now says so.

* test(#2995): guard the marker-documenting-doc class for agents

Widening the composer's scope to agents/ makes reachable the exact class #2930
narrowed scope to avoid: a file that DOCUMENTS the marker syntax with an
unfenced example is indistinguishable from a real marker, so the composer drops
that line from the emitted artifact.

Three rows. A fenced example must compose byte-identically. No shipped agent may
carry a marker outside a fence — asserted by parsing every real agent and
requiring zero explicit sections, which is what makes the fence protection
load-bearing rather than decorative. And a non-vacuity row asserts an UNFENCED
marker IS parsed as a real marker, so if that ever stops being true the second
row is guarding nothing.

Also applies two review findings: stageAgentsForProfile's new JSDoc claimed it
had no production caller, which is false — bin/install.js's _stageAgents still
calls it, and its consumers compose before writing. Corrected to state the
invariant instead. And a let/const nit in the emission sweep.

* fix(#2995): keep verifier status vocabulary in the agent, fix a wrong fixture

The first remote run came back red with three failures. Both root causes were
mine.

1. tests/agent-frontmatter.test.cjs requires agents/gsd-verifier.md to literally
   contain HOLLOW and DISCONNECTED. The Step 4b extraction moved that status
   vocabulary into gsd-core/references/verifier-wiring-patterns.md, so the agent
   no longer had it.

   Byte accounting said no content was lost, and byte-wise that was true — but a
   contract required those tokens to live IN THE AGENT. That is ADR-1671:66's
   flexReserve floor stated concretely: a load-bearing fragment must not be
   trimmed out of its host, and "the bytes still exist somewhere" is not the
   test. The two status tables are restored to the agent and deliberately
   mirrored in the reference with a note saying so, so the procedure there still
   reads standalone. gsd-verifier lands at 47,069 B — headroom 12 -> 2,083,
   rather than the 2,781 the first attempt claimed.

2. Row 12b of the new marker-documentation guard asserted that an unfenced
   marker example parses as a real marker, and threw instead:
   "unmatched /gsd:section close marker". The grammar is WHOLE-LINE only. The
   fixture had put the OPEN marker inline mid-sentence, so it was correctly not
   recognised as an open while the close, on its own line, was.

   That is a real refinement of the hazard this guard exists for: only a marker
   on its OWN line is mis-parsed — which is exactly how a documentation example
   is normally written. Row 12b now uses a whole-line marker, and a new row 12c
   pins the inline case as explicitly NOT a marker.

No test was weakened to accommodate the change; the change was corrected to
satisfy the tests.

Refs #2995

* chore(#2995): backfill changeset pr number to 3058

---------

Co-authored-by: sim <sim@local>
2026-08-04 18:10:31 -04:00

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, Antigravity CLI, Kimi CLI, Kilo, Codex, Copilot, Cursor, Windsurf, and more.

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What is GSD Core

GSD Core is a context-engineering and spec-driven development framework that drives AI coding agents (Claude Code, Codex, Antigravity 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, Antigravity 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 a new project or onboard an existing repo:

/gsd-new-project   # greenfield project
/gsd-onboard       # existing codebase

New here? Follow Your first project for a guided walkthrough from install to first shipped phase, or Onboarding an existing codebase for brownfield setup.


Documentation

What's new in 1.7.0 → docs/whats-new-1.7.0.md

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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