diff --git a/packages/fallbacks/data-drift.test.ts b/packages/fallbacks/data-drift.test.ts
new file mode 100644
index 0000000..b1714e9
--- /dev/null
+++ b/packages/fallbacks/data-drift.test.ts
@@ -0,0 +1,25 @@
+/**
+ * `src/data.ts` is generated from `records.json` by `scripts/generate-data.ts`; records.json is the only
+ * file a reviewer hand-edits. This guards the two against drift: a hand-edit to data.ts, or an edit to
+ * records.json without re-running `bun run gen:data`, fails here. The generator is pure, so the test
+ * re-renders the module in memory and byte-compares it to the checked-in file.
+ */
+import { describe, expect, test } from "bun:test";
+import { readFileSync } from "node:fs";
+import {
+  DATA_PATH,
+  loadRecords,
+  renderDataModule,
+} from "./scripts/generate-data";
+import { SUBSTITUTION_EVIDENCE } from "./src/index";
+
+describe("data.ts is generated from records.json", () => {
+  test("checked-in src/data.ts matches the generator output (run `bun run gen:data` if this fails)", () => {
+    const onDisk = readFileSync(DATA_PATH, "utf8");
+    expect(onDisk).toBe(renderDataModule(loadRecords()));
+  });
+
+  test("the exported rows deep-equal records.json", () => {
+    expect(SUBSTITUTION_EVIDENCE).toEqual(loadRecords());
+  });
+});
diff --git a/packages/fallbacks/fallbacks.test.ts b/packages/fallbacks/fallbacks.test.ts
index c815a5e..90c40c7 100644
--- a/packages/fallbacks/fallbacks.test.ts
+++ b/packages/fallbacks/fallbacks.test.ts
@@ -289,3 +289,58 @@ describe("glyphExceptions projection", () => {
     ).toHaveLength(1);
   });
 });
+
+describe("Cooper Black -> Caprasimo (Regular-only, metric_safe)", () => {
+  const renderAll = { canRenderFamily: () => true };
+  const onlyCaprasimo = { canRenderFamily: (f: string) => f === "Caprasimo" };
+
+  test("the family resolves to Caprasimo as an exact, line-break-safe Regular substitute", () => {
+    // Unlike Baskerville -> Bacasime (visual_only, NBSP reflows), Cooper measures 0% across the Latin
+    // core, so the row is metric_safe with no glyph exceptions.
+    expect(getRenderableFallback("Cooper Black", renderAll)).toEqual({
+      substituteFamily: "Caprasimo",
+      policyAction: "substitute",
+      verdict: "metric_safe",
+      lineBreakSafe: true,
+      faces: { regular: true, bold: false, italic: false, boldItalic: false },
+      evidenceId: "cooper-black",
+    });
+  });
+
+  test("Regular maps; bold/italic/boldItalic are face_missing (never faux-styled onto Caprasimo)", () => {
+    expect(
+      getRenderableFallbackForFace("Cooper Black", "regular", renderAll)
+        ?.substituteFamily,
+    ).toBe("Caprasimo");
+    for (const face of ["bold", "italic", "boldItalic"] as const) {
+      expect(
+        getRenderableFallbackForFace("Cooper Black", face, renderAll),
+        `Cooper Black ${face}`,
+      ).toBeNull();
+      expect(
+        getFallbackDecisionForFace("Cooper Black", face, renderAll),
+        `Cooper Black ${face} decision`,
+      ).toEqual({
+        kind: "face_missing",
+        substituteFamily: "Caprasimo",
+        evidenceId: "cooper-black",
+      });
+    }
+  });
+
+  test("stays asset-aware: a consumer that does not bundle Caprasimo gets asset_missing, not a render", () => {
+    // Asset gate: Cooper stays inert until a consumer actually bundles Caprasimo.
+    expect(
+      getFallbackDecision("Cooper Black", { canRenderFamily: () => false }),
+    ).toEqual({
+      kind: "asset_missing",
+      substituteFamily: "Caprasimo",
+      verdict: "metric_safe",
+      evidenceId: "cooper-black",
+    });
+    expect(
+      getRenderableFallbackForFace("Cooper Black", "regular", onlyCaprasimo)
+        ?.substituteFamily,
+    ).toBe("Caprasimo");
+  });
+});
diff --git a/packages/fallbacks/package.json b/packages/fallbacks/package.json
index 9e70df8..6b0fca2 100644
--- a/packages/fallbacks/package.json
+++ b/packages/fallbacks/package.json
@@ -35,6 +35,7 @@
     "directory": "packages/fallbacks"
   },
   "scripts": {
+    "gen:data": "bun run scripts/generate-data.ts",
     "build": "tsc -p tsconfig.build.json",
     "prepack": "bun run build"
   },
diff --git a/packages/fallbacks/records.json b/packages/fallbacks/records.json
new file mode 100644
index 0000000..7614b79
--- /dev/null
+++ b/packages/fallbacks/records.json
@@ -0,0 +1,660 @@
+[
+  {
+    "evidenceId": "calibri",
+    "logicalFamily": "Calibri",
+    "physicalFamily": "Carlito",
+    "verdict": "metric_safe",
+    "faces": {
+      "regular": true,
+      "bold": true,
+      "italic": true,
+      "boldItalic": true
+    },
+    "gates": {
+      "static": "pass",
+      "metric": "pass",
+      "layout": "pass",
+      "ship": "pass"
+    },
+    "policyAction": "substitute",
+    "measurementRefs": [
+      "calibri__carlito#analytic_advance#2026-06-03",
+      "calibri__carlito#face_aggregate#2026-06-03"
+    ],
+    "exportRule": "preserve_original_name",
+    "advance": {
+      "meanDelta": 0,
+      "maxDelta": 0
+    },
+    "candidateLicense": "OFL-1.1"
+  },
+  {
+    "evidenceId": "cambria",
+    "logicalFamily": "Cambria",
+    "physicalFamily": "Caladea",
+    "verdict": "visual_only",
+    "faces": {
+      "regular": true,
+      "bold": true,
+      "italic": true,
+      "boldItalic": true
+    },
+    "gates": {
+      "static": "pass",
+      "metric": "pass",
+      "layout": "not_run",
+      "ship": "pass"
+    },
+    "policyAction": "substitute",
+    "measurementRefs": [
+      "cambria_regular__caladea#regular#w400#d2f6cad3#analytic_advance#2026-06-04",
+      "cambria_bold__caladea#bold#w700#74eda4fc#analytic_advance#2026-06-04",
+      "cambria_italic__caladea#italic#w400#9c968bf6#analytic_advance#2026-06-04",
+      "cambria_boldItalic__caladea#boldItalic#w700#f47a35ad#analytic_advance#2026-06-04"
+    ],
+    "exportRule": "preserve_original_name",
+    "advance": {
+      "meanDelta": 0.0002378,
+      "maxDelta": 0.2310758
+    },
+    "candidateLicense": "Apache-2.0",
+    "faceVerdicts": {
+      "regular": "metric_safe",
+      "bold": "metric_safe",
+      "italic": "metric_safe",
+      "boldItalic": "visual_only"
+    },
+    "glyphExceptions": [
+      {
+        "slot": "boldItalic",
+        "codepoint": 96,
+        "advanceDelta": 0.231,
+        "note": "Caladea Bold Italic grave accent (U+0060) advance diverges ~23% from Cambria; lines containing it reflow. All other glyphs, and the regular/bold/italic faces, are within the direct metric threshold."
+      }
+    ]
+  },
+  {
+    "evidenceId": "arial",
+    "logicalFamily": "Arial",
+    "physicalFamily": "Liberation Sans",
+    "verdict": "metric_safe",
+    "faces": {
+      "regular": true,
+      "bold": true,
+      "italic": true,
+      "boldItalic": true
+    },
+    "gates": {
+      "static": "pass",
+      "metric": "pass",
+      "layout": "not_run",
+      "ship": "pass"
+    },
+    "policyAction": "substitute",
+    "measurementRefs": ["arial__liberation-sans#analytic_advance#2026-06-03"],
+    "exportRule": "preserve_original_name",
+    "advance": {
+      "meanDelta": 0,
+      "maxDelta": 0
+    },
+    "candidateLicense": "OFL-1.1"
+  },
+  {
+    "evidenceId": "times-new-roman",
+    "logicalFamily": "Times New Roman",
+    "physicalFamily": "Liberation Serif",
+    "verdict": "metric_safe",
+    "faces": {
+      "regular": true,
+      "bold": true,
+      "italic": true,
+      "boldItalic": true
+    },
+    "gates": {
+      "static": "pass",
+      "metric": "pass",
+      "layout": "not_run",
+      "ship": "pass"
+    },
+    "policyAction": "substitute",
+    "measurementRefs": [
+      "times-new-roman__liberation-serif#analytic_advance#2026-06-03"
+    ],
+    "exportRule": "preserve_original_name",
+    "advance": {
+      "meanDelta": 0,
+      "maxDelta": 0
+    },
+    "candidateLicense": "OFL-1.1"
+  },
+  {
+    "evidenceId": "courier-new",
+    "logicalFamily": "Courier New",
+    "physicalFamily": "Liberation Mono",
+    "verdict": "metric_safe",
+    "faces": {
+      "regular": true,
+      "bold": true,
+      "italic": true,
+      "boldItalic": true
+    },
+    "gates": {
+      "static": "pass",
+      "metric": "pass",
+      "layout": "not_run",
+      "ship": "pass"
+    },
+    "policyAction": "substitute",
+    "measurementRefs": [
+      "courier-new__liberation-mono#analytic_advance#2026-06-03"
+    ],
+    "exportRule": "preserve_original_name",
+    "advance": {
+      "meanDelta": 0,
+      "maxDelta": 0
+    },
+    "candidateLicense": "OFL-1.1"
+  },
+  {
+    "evidenceId": "georgia",
+    "logicalFamily": "Georgia",
+    "physicalFamily": "Gelasio",
+    "verdict": "near_metric",
+    "faces": {
+      "regular": true,
+      "bold": true,
+      "italic": true,
+      "boldItalic": true
+    },
+    "gates": {
+      "static": "pass",
+      "metric": "pass",
+      "layout": "pass",
+      "ship": "fail"
+    },
+    "policyAction": "substitute",
+    "measurementRefs": [
+      "georgia_regular__gelasio#regular#w400#1543f04d#analytic_advance#2026-06-04",
+      "georgia_bold__gelasio#bold#w700#5a1b9bd7#analytic_advance#2026-06-04",
+      "georgia_italic__gelasio#italic#w400#be1243a9#analytic_advance#2026-06-04",
+      "georgia_boldItalic__gelasio#boldItalic#w700#6f3b3f7a#analytic_advance#2026-06-04",
+      "georgia_regular__gelasio#regular#w400#1543f04d#live_layout#2026-06-03",
+      "georgia_bold__gelasio#bold#w700#5a1b9bd7#live_layout#2026-06-03",
+      "georgia_italic__gelasio#italic#w400#be1243a9#live_layout#2026-06-03",
+      "georgia_boldItalic__gelasio#boldItalic#w700#6f3b3f7a#live_layout#2026-06-03"
+    ],
+    "exportRule": "preserve_original_name",
+    "advance": {
+      "meanDelta": 0.0000197,
+      "maxDelta": 0.0183727
+    },
+    "candidateLicense": "OFL-1.1",
+    "faceVerdicts": {
+      "regular": "metric_safe",
+      "bold": "metric_safe",
+      "italic": "near_metric",
+      "boldItalic": "near_metric"
+    },
+    "glyphExceptions": [
+      {
+        "slot": "italic",
+        "codepoint": 210,
+        "advanceDelta": 0.0184,
+        "note": "Georgia Italic vs Gelasio Italic: accented capital O (U+00D2-D8: O-grave/acute/circumflex/diaeresis/stroke) advance differs ~1.84%. 5 rare glyphs; all other glyphs exact, mean 0%."
+      },
+      {
+        "slot": "boldItalic",
+        "codepoint": 204,
+        "advanceDelta": 0.011,
+        "note": "Georgia Bold Italic vs Gelasio Bold Italic: accented capital I (U+00CC-CE: I-grave/acute/circumflex) advance differs ~1.10%. 3 rare glyphs; all other glyphs exact, mean ~0%."
+      }
+    ]
+  },
+  {
+    "evidenceId": "arial-narrow",
+    "logicalFamily": "Arial Narrow",
+    "physicalFamily": "Liberation Sans Narrow",
+    "verdict": "visual_only",
+    "faces": {
+      "regular": true,
+      "bold": true,
+      "italic": true,
+      "boldItalic": true
+    },
+    "gates": {
+      "static": "pass",
+      "metric": "pass",
+      "layout": "not_run",
+      "ship": "fail"
+    },
+    "policyAction": "substitute",
+    "measurementRefs": [
+      "arial-narrow_regular__liberation-sans-narrow#regular#w400#546e8957#analytic_advance#2026-06-04",
+      "arial-narrow_bold__liberation-sans-narrow#bold#w700#8e5eb509#analytic_advance#2026-06-04",
+      "arial-narrow_italic__liberation-sans-narrow#italic#w400#c5de4127#analytic_advance#2026-06-04",
+      "arial-narrow_boldItalic__liberation-sans-narrow#boldItalic#w700#57fe1513#analytic_advance#2026-06-04"
+    ],
+    "exportRule": "preserve_original_name",
+    "advance": {
+      "meanDelta": 0,
+      "maxDelta": 0.5
+    },
+    "candidateLicense": "GPLv2-with-font-exception",
+    "faceVerdicts": {
+      "regular": "metric_safe",
+      "bold": "visual_only",
+      "italic": "metric_safe",
+      "boldItalic": "metric_safe"
+    },
+    "glyphExceptions": [
+      {
+        "slot": "bold",
+        "codepoint": 160,
+        "advanceDelta": 0.5,
+        "note": "Arial Narrow Bold no-break space (U+00A0) is double-width (2x the regular space); Liberation Sans Narrow Bold matches the regular space, so lines containing a non-breaking space reflow. All other glyphs, and the regular/italic/boldItalic faces, match within the direct metric threshold."
+      }
+    ]
+  },
+  {
+    "evidenceId": "aptos",
+    "logicalFamily": "Aptos",
+    "physicalFamily": null,
+    "verdict": "no_substitute",
+    "faces": {
+      "regular": false,
+      "bold": false,
+      "italic": false,
+      "boldItalic": false
+    },
+    "gates": {
+      "static": "not_run",
+      "metric": "fail",
+      "layout": "not_run",
+      "ship": "not_run"
+    },
+    "policyAction": "customer_supplied",
+    "measurementRefs": ["aptos#top_candidates#2026-06-03"],
+    "exportRule": "preserve_original_name",
+    "candidateLicense": null
+  },
+  {
+    "evidenceId": "consolas",
+    "logicalFamily": "Consolas",
+    "physicalFamily": "Inconsolata SemiExpanded",
+    "verdict": "cell_width_only",
+    "faces": {
+      "regular": false,
+      "bold": false,
+      "italic": false,
+      "boldItalic": false
+    },
+    "gates": {
+      "static": "not_run",
+      "metric": "not_run",
+      "layout": "not_run",
+      "ship": "not_run"
+    },
+    "policyAction": "category_fallback",
+    "measurementRefs": [
+      "consolas__inconsolata-semiexpanded#analytic_advance#2026-06-03"
+    ],
+    "exportRule": "preserve_original_name",
+    "advance": {
+      "meanDelta": 0.00035999999999999997,
+      "maxDelta": 0.00035999999999999997
+    },
+    "candidateLicense": "OFL-1.1"
+  },
+  {
+    "evidenceId": "verdana",
+    "logicalFamily": "Verdana",
+    "physicalFamily": null,
+    "verdict": "visual_only",
+    "faces": {
+      "regular": false,
+      "bold": false,
+      "italic": false,
+      "boldItalic": false
+    },
+    "gates": {
+      "static": "not_run",
+      "metric": "fail",
+      "layout": "not_run",
+      "ship": "not_run"
+    },
+    "policyAction": "category_fallback",
+    "measurementRefs": ["verdana#top_candidates#2026-06-03"],
+    "exportRule": "preserve_original_name",
+    "candidateLicense": null
+  },
+  {
+    "evidenceId": "tahoma",
+    "logicalFamily": "Tahoma",
+    "physicalFamily": null,
+    "verdict": "visual_only",
+    "faces": {
+      "regular": false,
+      "bold": false,
+      "italic": false,
+      "boldItalic": false
+    },
+    "gates": {
+      "static": "not_run",
+      "metric": "fail",
+      "layout": "not_run",
+      "ship": "not_run"
+    },
+    "policyAction": "category_fallback",
+    "measurementRefs": ["tahoma#top_candidates#2026-06-03"],
+    "exportRule": "preserve_original_name",
+    "candidateLicense": null
+  },
+  {
+    "evidenceId": "trebuchet-ms",
+    "logicalFamily": "Trebuchet MS",
+    "physicalFamily": null,
+    "verdict": "visual_only",
+    "faces": {
+      "regular": false,
+      "bold": false,
+      "italic": false,
+      "boldItalic": false
+    },
+    "gates": {
+      "static": "not_run",
+      "metric": "fail",
+      "layout": "not_run",
+      "ship": "not_run"
+    },
+    "policyAction": "category_fallback",
+    "measurementRefs": ["trebuchet-ms#top_candidates#2026-06-03"],
+    "exportRule": "preserve_original_name",
+    "candidateLicense": null
+  },
+  {
+    "evidenceId": "comic-sans-ms",
+    "logicalFamily": "Comic Sans MS",
+    "physicalFamily": "Comic Neue",
+    "verdict": "visual_only",
+    "faces": {
+      "regular": false,
+      "bold": false,
+      "italic": false,
+      "boldItalic": false
+    },
+    "gates": {
+      "static": "not_run",
+      "metric": "fail",
+      "layout": "not_run",
+      "ship": "not_run"
+    },
+    "policyAction": "category_fallback",
+    "measurementRefs": [
+      "comic-sans-ms__comic-neue#analytic_advance#2026-06-03"
+    ],
+    "exportRule": "preserve_original_name",
+    "advance": {
+      "meanDelta": 0.1005,
+      "maxDelta": 0.1419
+    },
+    "candidateLicense": "OFL-1.1"
+  },
+  {
+    "evidenceId": "candara",
+    "logicalFamily": "Candara",
+    "physicalFamily": null,
+    "verdict": "visual_only",
+    "faces": {
+      "regular": false,
+      "bold": false,
+      "italic": false,
+      "boldItalic": false
+    },
+    "gates": {
+      "static": "not_run",
+      "metric": "fail",
+      "layout": "not_run",
+      "ship": "not_run"
+    },
+    "policyAction": "category_fallback",
+    "measurementRefs": ["candara#top_candidates#2026-06-03"],
+    "exportRule": "preserve_original_name",
+    "candidateLicense": null
+  },
+  {
+    "evidenceId": "constantia",
+    "logicalFamily": "Constantia",
+    "physicalFamily": null,
+    "verdict": "visual_only",
+    "faces": {
+      "regular": false,
+      "bold": false,
+      "italic": false,
+      "boldItalic": false
+    },
+    "gates": {
+      "static": "not_run",
+      "metric": "fail",
+      "layout": "not_run",
+      "ship": "not_run"
+    },
+    "policyAction": "category_fallback",
+    "measurementRefs": ["constantia#top_candidates#2026-06-03"],
+    "exportRule": "preserve_original_name",
+    "candidateLicense": null
+  },
+  {
+    "evidenceId": "corbel",
+    "logicalFamily": "Corbel",
+    "physicalFamily": null,
+    "verdict": "visual_only",
+    "faces": {
+      "regular": false,
+      "bold": false,
+      "italic": false,
+      "boldItalic": false
+    },
+    "gates": {
+      "static": "not_run",
+      "metric": "fail",
+      "layout": "not_run",
+      "ship": "not_run"
+    },
+    "policyAction": "category_fallback",
+    "measurementRefs": ["corbel#top_candidates#2026-06-03"],
+    "exportRule": "preserve_original_name",
+    "candidateLicense": null
+  },
+  {
+    "evidenceId": "lucida-console",
+    "logicalFamily": "Lucida Console",
+    "physicalFamily": "Cousine",
+    "verdict": "cell_width_only",
+    "faces": {
+      "regular": false,
+      "bold": false,
+      "italic": false,
+      "boldItalic": false
+    },
+    "gates": {
+      "static": "not_run",
+      "metric": "not_run",
+      "layout": "not_run",
+      "ship": "not_run"
+    },
+    "policyAction": "category_fallback",
+    "measurementRefs": ["lucida-console__cousine#analytic_advance#2026-06-03"],
+    "exportRule": "preserve_original_name",
+    "advance": {
+      "meanDelta": 0.004050000000000001,
+      "maxDelta": 0.004050000000000001
+    },
+    "candidateLicense": "OFL-1.1"
+  },
+  {
+    "evidenceId": "aptos-display",
+    "logicalFamily": "Aptos Display",
+    "physicalFamily": null,
+    "verdict": "customer_supplied",
+    "faces": {
+      "regular": false,
+      "bold": false,
+      "italic": false,
+      "boldItalic": false
+    },
+    "gates": {
+      "static": "not_run",
+      "metric": "not_run",
+      "layout": "not_run",
+      "ship": "fail"
+    },
+    "policyAction": "customer_supplied",
+    "measurementRefs": [],
+    "exportRule": "preserve_original_name"
+  },
+  {
+    "evidenceId": "cambria-math",
+    "logicalFamily": "Cambria Math",
+    "physicalFamily": null,
+    "verdict": "preserve_only",
+    "faces": {
+      "regular": false,
+      "bold": false,
+      "italic": false,
+      "boldItalic": false
+    },
+    "gates": {
+      "static": "not_run",
+      "metric": "not_run",
+      "layout": "not_run",
+      "ship": "not_run"
+    },
+    "policyAction": "preserve_only",
+    "measurementRefs": [],
+    "exportRule": "preserve_original_name"
+  },
+  {
+    "evidenceId": "helvetica",
+    "logicalFamily": "Helvetica",
+    "physicalFamily": "Liberation Sans",
+    "verdict": "metric_safe",
+    "faces": {
+      "regular": true,
+      "bold": true,
+      "italic": true,
+      "boldItalic": true
+    },
+    "gates": {
+      "static": "not_run",
+      "metric": "pass",
+      "layout": "not_run",
+      "ship": "pass"
+    },
+    "policyAction": "substitute",
+    "measurementRefs": [
+      "helvetica__liberation-sans#analytic_advance#2026-06-03"
+    ],
+    "exportRule": "preserve_original_name",
+    "advance": {
+      "meanDelta": 0,
+      "maxDelta": 0
+    },
+    "candidateLicense": "OFL-1.1"
+  },
+  {
+    "evidenceId": "calibri-light",
+    "logicalFamily": "Calibri Light",
+    "physicalFamily": "Carlito",
+    "verdict": "visual_only",
+    "faces": {
+      "regular": false,
+      "bold": false,
+      "italic": false,
+      "boldItalic": false
+    },
+    "gates": {
+      "static": "not_run",
+      "metric": "fail",
+      "layout": "not_run",
+      "ship": "fail"
+    },
+    "policyAction": "category_fallback",
+    "measurementRefs": ["calibri-light__carlito#analytic_advance#2026-06-05"],
+    "exportRule": "preserve_original_name",
+    "advance": {
+      "meanDelta": 0.0148,
+      "maxDelta": 0.066
+    },
+    "candidateLicense": "OFL-1.1"
+  },
+  {
+    "evidenceId": "baskerville-old-face",
+    "logicalFamily": "Baskerville Old Face",
+    "physicalFamily": "Bacasime Antique",
+    "verdict": "visual_only",
+    "faces": {
+      "regular": true,
+      "bold": false,
+      "italic": false,
+      "boldItalic": false
+    },
+    "gates": {
+      "static": "pass",
+      "metric": "fail",
+      "layout": "not_run",
+      "ship": "not_run"
+    },
+    "policyAction": "substitute",
+    "measurementRefs": [
+      "baskerville-old-face_regular__bacasime-antique#regular#w400#7dac1e5f#analytic_advance#2026-06-05"
+    ],
+    "exportRule": "preserve_original_name",
+    "advance": {
+      "meanDelta": 0,
+      "maxDelta": 0.4915590863952334
+    },
+    "candidateLicense": "OFL-1.1",
+    "faceVerdicts": {
+      "regular": "visual_only"
+    },
+    "glyphExceptions": [
+      {
+        "slot": "regular",
+        "codepoint": 160,
+        "advanceDelta": 0.4916,
+        "note": "Bacasime Antique Regular's no-break space (U+00A0) advance diverges ~49% from Baskerville Old Face; lines containing NBSP reflow. Every other Latin-core glyph is advance-identical, which is why this is visual_only with a single named exception, not near_metric."
+      }
+    ]
+  },
+  {
+    "evidenceId": "cooper-black",
+    "logicalFamily": "Cooper Black",
+    "physicalFamily": "Caprasimo",
+    "verdict": "metric_safe",
+    "faces": {
+      "regular": true,
+      "bold": false,
+      "italic": false,
+      "boldItalic": false
+    },
+    "gates": {
+      "static": "pass",
+      "metric": "pass",
+      "layout": "not_run",
+      "ship": "not_run"
+    },
+    "policyAction": "substitute",
+    "measurementRefs": [
+      "cooper-black_regular__caprasimo#regular#w400#786ab84e#analytic_advance#2026-06-05"
+    ],
+    "exportRule": "preserve_original_name",
+    "advance": {
+      "meanDelta": 0,
+      "maxDelta": 0
+    },
+    "candidateLicense": "OFL-1.1",
+    "faceVerdicts": {
+      "regular": "metric_safe"
+    }
+  }
+]
diff --git a/packages/fallbacks/scripts/generate-data.ts b/packages/fallbacks/scripts/generate-data.ts
new file mode 100644
index 0000000..f5824ed
--- /dev/null
+++ b/packages/fallbacks/scripts/generate-data.ts
@@ -0,0 +1,39 @@
+/**
+ * Generate `src/data.ts` from `records.json`, the reviewed source of truth.
+ *
+ * `records.json` is the only file a reviewer edits to add or change a row; `src/data.ts` is a
+ * derived, biome-ignored TypeScript module (a typed re-export of the same rows). Run `bun run gen:data`
+ * after editing records.json. The drift test (`data-drift.test.ts`) re-renders in memory and fails if
+ * the checked-in module is stale, so the two can never silently diverge.
+ */
+import { readFileSync, writeFileSync } from "node:fs";
+import { join } from "node:path";
+import type { SubstitutionEvidence } from "../src/types.js";
+
+const PKG_DIR = join(import.meta.dir, "..");
+export const RECORDS_PATH = join(PKG_DIR, "records.json");
+export const DATA_PATH = join(PKG_DIR, "src", "data.ts");
+
+/** Load the reviewed rows from records.json. */
+export function loadRecords(): SubstitutionEvidence[] {
+  return JSON.parse(
+    readFileSync(RECORDS_PATH, "utf8"),
+  ) as SubstitutionEvidence[];
+}
+
+/** Render the `src/data.ts` module text for a set of reviewed rows. Pure, so the drift test can diff it. */
+export function renderDataModule(
+  records: readonly SubstitutionEvidence[],
+): string {
+  const rows = JSON.stringify(records, null, 2);
+  return `// Generated from records.json by scripts/generate-data.ts. Do not edit by hand.
+import type { SubstitutionEvidence } from "./types.js";
+
+export const SUBSTITUTION_EVIDENCE: readonly SubstitutionEvidence[] = ${rows};
+`;
+}
+
+if (import.meta.main) {
+  writeFileSync(DATA_PATH, renderDataModule(loadRecords()));
+  console.log(`Wrote ${DATA_PATH}`);
+}
diff --git a/packages/fallbacks/src/data.ts b/packages/fallbacks/src/data.ts
index dca6541..4ccc309 100644
--- a/packages/fallbacks/src/data.ts
+++ b/packages/fallbacks/src/data.ts
@@ -1,4 +1,4 @@
-// Generated from reviewed docfonts evidence. Do not edit by hand.
+// Generated from records.json by scripts/generate-data.ts. Do not edit by hand.
 import type { SubstitutionEvidence } from "./types.js";
 
 export const SUBSTITUTION_EVIDENCE: readonly SubstitutionEvidence[] = [
@@ -648,5 +648,36 @@ export const SUBSTITUTION_EVIDENCE: readonly SubstitutionEvidence[] = [
         "note": "Bacasime Antique Regular's no-break space (U+00A0) advance diverges ~49% from Baskerville Old Face; lines containing NBSP reflow. Every other Latin-core glyph is advance-identical, which is why this is visual_only with a single named exception, not near_metric."
       }
     ]
+  },
+  {
+    "evidenceId": "cooper-black",
+    "logicalFamily": "Cooper Black",
+    "physicalFamily": "Caprasimo",
+    "verdict": "metric_safe",
+    "faces": {
+      "regular": true,
+      "bold": false,
+      "italic": false,
+      "boldItalic": false
+    },
+    "gates": {
+      "static": "pass",
+      "metric": "pass",
+      "layout": "not_run",
+      "ship": "not_run"
+    },
+    "policyAction": "substitute",
+    "measurementRefs": [
+      "cooper-black_regular__caprasimo#regular#w400#786ab84e#analytic_advance#2026-06-05"
+    ],
+    "exportRule": "preserve_original_name",
+    "advance": {
+      "meanDelta": 0,
+      "maxDelta": 0
+    },
+    "candidateLicense": "OFL-1.1",
+    "faceVerdicts": {
+      "regular": "metric_safe"
+    }
   }
 ];