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feat: add Nyquist validation layer to plan-phase pipeline

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Adds automated feedback architecture research to gsd-phase-researcher,
enforces it as Dimension 8 in gsd-plan-checker, and introduces
{phase}-VALIDATION.md as the per-phase validation contract.

Ensures every phase plan includes automated verify commands before
execution begins. Opt-out via workflow.nyquist_validation: false.

Closes #122 (partial), related #117

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
This commit is contained in:
Bantuson
2026-02-20 13:46:39 +02:00
parent 3cf26d69ee
commit e0f9c738c9
9 changed files with 352 additions and 13 deletions
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22
docs/USER-GUIDE.md
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@@ -97,6 +97,24 @@ A detailed reference for workflows, troubleshooting, and configuration. For quic
└── Done
```
### Validation Architecture (Nyquist Layer)
During plan-phase research, GSD now maps automated test coverage to each phase
requirement before any code is written. This ensures that when Claude's executor
commits a task, a feedback mechanism already exists to verify it within seconds.
The researcher detects your existing test infrastructure, maps each requirement to
a specific test command, and identifies any test scaffolding that must be created
before implementation begins (Wave 0 tasks).
The plan-checker enforces this as an 8th verification dimension: plans where tasks
lack automated verify commands will not be approved.
**Output:** `{phase}-VALIDATION.md` -- the feedback contract for the phase.
**Disable:** Set `workflow.nyquist_validation: false` in `/gsd:settings` for
rapid prototyping phases where test infrastructure isn't the focus.
### Execution Wave Coordination
```
@@ -206,7 +224,8 @@ GSD stores project settings in `.planning/config.json`. Configure during `/gsd:n
"workflow": {
"research": true,
"plan_check": true,
"verifier": true
"verifier": true,
"nyquist_validation": true
},
"git": {
"branching_strategy": "none",
@@ -240,6 +259,7 @@ GSD stores project settings in `.planning/config.json`. Configure during `/gsd:n
| `workflow.research` | `true`, `false` | `true` | Domain investigation before planning |
| `workflow.plan_check` | `true`, `false` | `true` | Plan verification loop (up to 3 iterations) |
| `workflow.verifier` | `true`, `false` | `true` | Post-execution verification against phase goals |
| `workflow.nyquist_validation` | `true`, `false` | `true` | Validation architecture research during plan-phase; 8th plan-check dimension |
Disable these to speed up phases in familiar domains or when conserving tokens.