{
  "$schema": "https://www.digitaltableteur.com/schemas/contract-spec/1.0/contract.schema.json",
  "specVersion": "1.0",
  "name": "BlogCategoryFilter",
  "status": "stable",
  "description": "Single-select tag filter for the blog archive: a labelled group of toggle chips with an implicit All, three visual treatments, optional per-tag counts and an optional collapsed mode.",
  "props": {
    "tags": {
      "type": "string[]",
      "optional": false,
      "description": "Array of unique tags"
    },
    "selectedTag": {
      "type": "string | null",
      "optional": false,
      "description": "Currently selected tag (null means \"All\")"
    },
    "onTagChange": {
      "type": "(tag: string | null) => void",
      "optional": false,
      "description": "Callback when tag selection changes"
    },
    "showCounts": {
      "type": "boolean",
      "optional": true,
      "description": "Show post counts per tag"
    },
    "tagCounts": {
      "type": "Record<string, number>",
      "optional": true,
      "description": "Tag counts object"
    },
    "variant": {
      "type": "union",
      "values": [
        "pills",
        "underline",
        "minimal"
      ],
      "optional": true,
      "description": "Style variant"
    },
    "size": {
      "type": "union",
      "values": [
        "sm",
        "md",
        "lg"
      ],
      "optional": true,
      "description": "Size variant"
    },
    "collapsible": {
      "type": "boolean",
      "optional": true,
      "description": "Collapse to the selected chip and a disclosure button; expanding shows\nevery chip and picking one collapses back to it."
    },
    "className": {
      "type": "string",
      "optional": true,
      "description": "Custom className"
    }
  },
  "accessibility": {
    "criteria": [
      {
        "id": "axe-no-violations",
        "statement": "Required stories produce no axe violations at the configured severity.",
        "verification": "automated",
        "wcag": [
          "2.5.8"
        ],
        "check": "npm run test:stories:matrix:ci",
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            "passed": true,
            "runner": "local-recapture"
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            "passed": true,
            "runner": "local-recapture"
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            "capturedAt": "2026-11-03T22:26:30.623Z",
            "passed": true,
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            "passed": true,
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            "capturedAt": "2026-11-03T22:26:31.016Z",
            "passed": true,
            "runner": "local-recapture"
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            "capturedAt": "2026-11-03T22:36:53.538Z",
            "passed": true,
            "runner": "local-recapture"
          },
          {
            "artifact": "../../../nextjs-app/shared/components/BlogCategoryFilter/__a11y-evidence__/site-blogcategoryfilter-forced-colors.json",
            "sourceCommit": "930c562b591b6d9967e1e8c214899052624d9a2f",
            "capturedAt": "2026-11-03T22:19:36.386Z",
            "passed": true,
            "runner": "local-recapture"
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            "artifact": "../../../nextjs-app/shared/components/BlogCategoryFilter/__a11y-evidence__/site-blogcategoryfilter-forced-colors.light.json",
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            "capturedAt": "2026-11-03T22:26:31.440Z",
            "passed": true,
            "runner": "local-recapture"
          }
        ]
      },
      {
        "id": "accessibility-tree",
        "statement": "The accessibility tree (role, name, state) matches the committed snapshot for every required story.",
        "verification": "automated",
        "wcag": [
          "1.3.1",
          "4.1.2"
        ],
        "check": "npm run test:stories:matrix:ci",
        "evidence": [
          {
            "artifact": "../../../nextjs-app/shared/components/BlogCategoryFilter/__a11y-evidence__/site-blogcategoryfilter-default.dark.json",
            "sourceCommit": "930c562b591b6d9967e1e8c214899052624d9a2f",
            "capturedAt": "2026-11-03T22:36:52.910Z",
            "passed": true,
            "runner": "local-recapture"
          },
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            "capturedAt": "2026-11-03T22:46:58.108Z",
            "passed": true,
            "runner": "local-recapture"
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            "capturedAt": "2026-11-03T22:19:35.751Z",
            "passed": true,
            "runner": "local-recapture"
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            "passed": true,
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            "passed": true,
            "runner": "local-recapture"
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            "capturedAt": "2026-11-03T22:46:58.443Z",
            "passed": true,
            "runner": "local-recapture"
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            "artifact": "../../../nextjs-app/shared/components/BlogCategoryFilter/__a11y-evidence__/site-blogcategoryfilter-example.json",
            "sourceCommit": "930c562b591b6d9967e1e8c214899052624d9a2f",
            "capturedAt": "2026-11-03T22:19:36.058Z",
            "passed": true,
            "runner": "local-recapture"
          },
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            "artifact": "../../../nextjs-app/shared/components/BlogCategoryFilter/__a11y-evidence__/site-blogcategoryfilter-example.light.json",
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            "capturedAt": "2026-11-03T22:26:31.016Z",
            "passed": true,
            "runner": "local-recapture"
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            "capturedAt": "2026-11-03T22:36:53.538Z",
            "passed": true,
            "runner": "local-recapture"
          },
          {
            "artifact": "../../../nextjs-app/shared/components/BlogCategoryFilter/__a11y-evidence__/site-blogcategoryfilter-forced-colors.forced-colors.json",
            "sourceCommit": "930c562b591b6d9967e1e8c214899052624d9a2f",
            "capturedAt": "2026-11-03T22:46:58.752Z",
            "passed": true,
            "runner": "local-recapture"
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          {
            "artifact": "../../../nextjs-app/shared/components/BlogCategoryFilter/__a11y-evidence__/site-blogcategoryfilter-forced-colors.json",
            "sourceCommit": "930c562b591b6d9967e1e8c214899052624d9a2f",
            "capturedAt": "2026-11-03T22:19:36.386Z",
            "passed": true,
            "runner": "local-recapture"
          },
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            "artifact": "../../../nextjs-app/shared/components/BlogCategoryFilter/__a11y-evidence__/site-blogcategoryfilter-forced-colors.light.json",
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            "capturedAt": "2026-11-03T22:26:31.440Z",
            "passed": true,
            "runner": "local-recapture"
          }
        ]
      },
      {
        "id": "forced-colors-real-browser",
        "statement": "The component remains legible and operable under a real browser forced-colors: active pass.",
        "verification": "automated",
        "check": "npm run test:stories:hc",
        "evidence": [
          {
            "artifact": "../../../nextjs-app/shared/components/BlogCategoryFilter/__a11y-evidence__/site-blogcategoryfilter-default.forced-colors.json",
            "sourceCommit": "930c562b591b6d9967e1e8c214899052624d9a2f",
            "capturedAt": "2026-11-03T22:46:58.108Z",
            "passed": true,
            "runner": "local-recapture"
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            "artifact": "../../../nextjs-app/shared/components/BlogCategoryFilter/__a11y-evidence__/site-blogcategoryfilter-example.forced-colors.json",
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            "capturedAt": "2026-11-03T22:46:58.443Z",
            "passed": true,
            "runner": "local-recapture"
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            "artifact": "../../../nextjs-app/shared/components/BlogCategoryFilter/__a11y-evidence__/site-blogcategoryfilter-forced-colors.forced-colors.json",
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            "capturedAt": "2026-11-03T22:46:58.752Z",
            "passed": true,
            "runner": "local-recapture"
          }
        ]
      },
      {
        "id": "keyboard-contract",
        "statement": "Every documented keyboard interaction works as specified.",
        "verification": "unverified",
        "wcag": [
          "2.1.1",
          "2.1.2"
        ],
        "note": "No exportable evidence record for this check; re-run the check to capture one."
      },
      {
        "id": "aria-requirements",
        "statement": "Documented ARIA roles, states, and properties are present on the rendered output.",
        "verification": "unverified",
        "wcag": [
          "4.1.2"
        ],
        "note": "No exportable evidence record for this check; re-run the check to capture one."
      },
      {
        "id": "human-a11y-review",
        "statement": "A human completed an end-to-end accessibility review of this component.",
        "verification": "manual",
        "note": "2026-07-06 alpha->beta: axe clean via test-storybook a11y test:error across base + light + dark + forced-colors on all stories and all three variants; 4-mode AT snapshots captured and compare-clean. 2026-07-07: reconciled the a11y model with CategoryFilter to role=group + aria-pressed toggle buttons. A filter that re-renders a results grid is a set of UI controls, not a tablist (a tablist implies tab panels it does not have), so the earlier role=tablist + roving-tabindex was dropped in favour of independently focusable toggle buttons. Tailwind className styling retained as an intentional per-surface owner call. 2026-07-08 — beta→stable: 4-mode AT (base/light/dark/forced-colors) verified on a non-6010 Storybook; accessibility tree and real-browser forced-colors confirmed.",
        "reviewedAt": "2026-11-04"
      }
    ]
  },
  "governance": {
    "owner": "design-system",
    "lastReviewed": "2026-11-04",
    "note": "Reviewed by Petri Lahdelma; prepared by Claude from a code review on 2026-11-03"
  },
  "source": [
    "../../../nextjs-app/shared/components/BlogCategoryFilter/BlogCategoryFilter.tsx"
  ]
}