Trim customer docs to user-facing proof; relocate production docs to the wiki

[SebaSOFT]

Summary

The gh-pages site was publishing ~15 internal asset-production pages (image-gen prompts, storyboards, a visual design system, asset manifests, a playground capture spec, folder rules, asset metadata) inside the customer-facing "Proof Assets" nav. These are developer/operator-oriented, were the origin of the private chaos-vault citations, and made the earlier proof PRs brittle (most failing tests policed internal docs). This PR makes the customer site serve only user-relevant proof.

Customer-facing "Benchmarks & Proof" (now lean)

• docs/benchmarks/index.md — tight proof landing: intro + explainability diagram + links.
• docs/benchmarks/methodology.md — user-readable: competitor/scenario/input-size matrices, how each metric is measured, a result-field dictionary, and the no-fabrication policy (embeds the methodology card).
• docs/benchmarks/results.md — measured charts + table (unchanged; generated).
• docs/benchmarks/ai-rule-safety.md — new explainer embedding the 5 carousel slides, reframed as "why AI-drafted rules need validation".
• Nav trimmed to Overview / Benchmark Results / Methodology / AI-Rule Safety. All generated SVGs kept.

Relocated out of the repo

The internal production docs were moved into the private chaos-vault wiki (50-research/neuron-js-proof-assets/) and removed here: prompt-kit, visual-proof-system, benchmark-visual-pack, asset prompts/*, storyboard/*, asset-manifest, folder READMEs, the assets/generated/*.md metadata, and the playground capture spec (+ empty docs/playground/). (That wiki commit is local on the owner's machine; not part of this PR.)

Tests

• Deleted playground-capture-contract.test.ts (it policed the moved playground spec/storyboard/nav entry).
• Added customer-docs-surface.test.ts: asserts the customer pages + generated SVGs exist, the internal pages are absent, and customer pages contain no chaos-vault references.
• benchmark-contract.test.ts / benchmark-results.test.ts unchanged and passing.

Validation

• yarn lint ✅ (50 files) · yarn test ✅ (13 files / 68) · yarn examples ✅ · yarn build ✅ · yarn docs:build ✅
• dist has no chaos-vault strings, and no internal pages built (visual-proof-system, prompt-kit, benchmark-visual-pack, playground/ all absent); the 4 customer pages build and the chart/diagram/carousel SVGs ship.

Why this also fixes the recurring issues

1. Private-research leak — the pages that cited chaos-vault are gone from the published surface, removing the whole class of leak (not just scrubbed strings).
2. SVGs not shown — the images that matter now have clear customer placement (results, diagram on the landing, carousel on the AI-rule-safety page).
3. Brittle PRs — tests no longer police internal process docs; the surface guard prevents regressions.

🤖 Generated with Claude Code

[gemini-code-assist]

Code Review

This pull request cleans up the public documentation by removing internal asset-production files, prompts, and storyboards, while introducing a new AI-rule safety page and updating the benchmark index and methodology. It also adds a contract test to ensure only customer-relevant pages and assets are published. The feedback suggests expanding the test's SVG asset list to include all newly referenced diagrams and carousel images, ensuring complete coverage of the customer-facing documentation surface.

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