{
  "pack": "zeus-performance-100y-v3",
  "version": "1.0.0",
  "freezeDate": "2026-05-06",
  "nextReviewYear": 2031,
  "horizonYear": 2076,
  "provenanceRoot": "84bec430b87b1163b9b51d3124c2f4c0a603bb8ceeae1bb61e6e28db76d155f7",
  "owner": {
    "name": "Vladoi Ionut",
    "email": "vladoi_ionut@yahoo.com",
    "btc": "bc1q4f7e66z87mdfj56kz0dj5hvcnpmh0qh4wuv22e"
  },
  "timestamp": "2026-06-10T18:20:08.374Z",
  "title": "Semantic Stability Pact — 50-Year HTML Schema Pledge",
  "purpose": "Pledge that the semantic skeleton of public pages (landmarks, heading levels, ARIA roles, microdata) will remain backward-compatible for 50 years. Future scrapers, assistive tech and archival robots can rely on it.",
  "pinned": {
    "landmarks": [
      "header",
      "nav",
      "main",
      "footer"
    ],
    "headingLevels": {
      "max": 3,
      "never": [
        "h4",
        "h5",
        "h6"
      ]
    },
    "ariaRoles": [
      "banner",
      "navigation",
      "main",
      "contentinfo"
    ],
    "microdata": [
      "Organization",
      "WebSite",
      "Article",
      "BreadcrumbList"
    ]
  },
  "guarantees": [
    "Existing element ids/anchors remain stable or get permanent 301 alias.",
    "Heading hierarchy never regresses (no h4+ added back).",
    "Removed semantic elements get deprecation notice + 5-year grace period."
  ],
  "pledgedUntil": "2076-05-06"
}