# Validation: Article Creation Gates

## Source case

The implementation targets the behavior observed in `brain-analysis (4).json`:

- research evidence was learned successfully;
- article cycles repeatedly ended with `articles_created: 0` and `articles_skipped: 1`;
- generated queries included invalid restrictions such as `site:digital-forensics`, `site:assetmanagement` and `site:cleanroomrecovery`;
- editorial definition and differentiation requests remained critical;
- at least one run reached `article.draft.started` without a visible rejection reason.

## Automated checks

The following focused engine tests pass:

- valid FQDN restrictions are retained;
- topic labels are rejected as domains;
- invalid query-level `site:` filters are removed;
- editorial critical gaps are downgraded only with a grounded core;
- rollback/data-loss gaps remain critical;
- legacy editorial missing information becomes optional;
- concept drafts pass the type-aware minimum with grounded key points;
- the same short content fails the operational how-to minimum;
- deterministic rejection metadata includes reason, field, actual and required values;
- existing research-gate and knowledge-brief tests continue to pass.

Commands used in the isolated validation copy:

```bash
go test ./internal/engine -run 'Test(NormalizeKnowledgeBrief|HeuristicResearchAssessment|FilterUsableResearchEvidence|AppendResearchEvidence|GapExpectsActionable|NormalizeResearchPlan|SelectResearchCandidates|CanonicalResearchURL|FilterKnowledgeBriefReferences|ArticleContentToDraft|NormalizeArticleContent|ArticleQualityContext|ArticleDraftContext|ValidateArticleDraft|ArticleDraftValidationMetadata|CleanDomains|SanitizeSearchQuery)' -count=1
go test ./... -run '^$' -count=1
node --check internal/web/static/app.js
```

## Environment limitation

The project declares Go 1.26 and depends on `modernc.org/sqlite`. The available validation environment provides Go 1.23.2 and no internet access. Compilation validation therefore used a temporary Go 1.23 copy and a compile-only local SQLite package stub. The original `go.mod` and production source remain unchanged.

Focused pure-logic tests were executed normally. Full runtime tests that open a real SQLite database must be rerun in the regular project build environment:

```bash
go test ./...
make build
```

The existing precompiled `neural-brain` file was not rebuilt in this environment.