Adding migrations and lot of work. Starting work on the demo scope

server/evidenceMatching.test.ts

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+import { describe, expect, it } from 'vitest'
+import { evaluateEvidenceRules, normalizeEvidenceText, scoreEvidenceAnchor } from './evidenceMatching.js'
+
+const barricelliRule = {
+  id: 'rule-barricelli',
+  name: 'Contemporary Barricelli fire report',
+  flagKey: 'barricelli.child-rescue-source',
+  minimumAnchorMatches: 1,
+  anchors: [{
+    id: 'parents',
+    phrase: 'den italienske maler og opfinder Barricelli og frue, født Aall',
+    minimumSimilarity: 0.72,
+  }, {
+    id: 'drink',
+    phrase: 'Han vækkede nemlig sin mor for at faa noget at drikke',
+    minimumSimilarity: 0.72,
+  }],
+}
+
+describe('evidence text matching', () => {
+  it('normalizes historical Norwegian characters and page layout noise', () => {
+    expect(normalizeEvidenceText('Født Aall — 2½ aar\n gammel')).toBe('fodt aall 2 1 2 aar gammel')
+  })
+
+  it('tolerates plausible OCR substitutions in a distinctive passage', () => {
+    const result = scoreEvidenceAnchor(
+      normalizeEvidenceText('I kvistleiligheden boede den italienske maler og opfinder Barrioelli og frue, født Aall, med sin lille søn.'),
+      barricelliRule.anchors[0].phrase,
+    )
+    expect(result.similarity).toBeGreaterThan(0.9)
+  })
+
+  it('awards the data-defined flag when one configured anchor is present', () => {
+    const evaluations = evaluateEvidenceRules('Han vækkede nemlig sin mor for at faa noget at drikke, og da ser hun huset brænder.', [barricelliRule])
+    expect(evaluations[0]).toMatchObject({ matched: true, matchedAnchorCount: 1, flagKey: 'barricelli.child-rescue-source' })
+  })
+
+  it('does not match generic words from an unrelated fire report', () => {
+    const evaluations = evaluateEvidenceRules('A family escaped from a boarding-house fire during the night.', [barricelliRule])
+    expect(evaluations[0]).toMatchObject({ matched: false, matchedAnchorCount: 0 })
+  })
+
+  it('can require multiple anchors for a stricter level rule', () => {
+    const rule = { ...barricelliRule, minimumAnchorMatches: 2 }
+    expect(evaluateEvidenceRules(barricelliRule.anchors[0].phrase, [rule])[0].matched).toBe(false)
+    expect(evaluateEvidenceRules(barricelliRule.anchors.map(anchor => anchor.phrase).join(' '), [rule])[0].matched).toBe(true)
+  })
+})