Step 1: i18n foundation (@angular/localize) + data inventory

Domain reference data already lives in the backend (per ADR-0001); the only
residual "move" was ~90 inlined Dutch UI strings with no i18n layer.

- Wire @angular/localize ($localize) — Angular first-party, no third-party lib
- Pin the pattern on shared/ui/async: Dutch fallbacks → language-agnostic
  input()s with localizable $localize defaults (English-shared-UI rule)
- CLAUDE.md: drop i18n (now in scope) + stale "real backend"/"OpenAPI codegen"
  (both already shipped); document the $localize convention

Bulk string sweep deferred to Step 2 to avoid touching ~36 files twice.

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>

package-lock.json

@@ -26,6 +26,7 @@
         "@angular/build": "^22.0.4",
         "@angular/cli": "^22.0.4",
         "@angular/compiler-cli": "^22.0.0",
+        "@angular/localize": "^22.0.4",
         "@angular/platform-browser-dynamic": "^22.0.0",
         "@compodoc/compodoc": "^1.2.1",
         "@storybook/addon-a11y": "^10.4.6",
@@ -781,6 +782,79 @@
         "rxjs": "^6.5.3 || ^7.4.0"
       }
     },
+    "node_modules/@angular/localize": {
+      "version": "22.0.4",
+      "resolved": "https://registry.npmjs.org/@angular/localize/-/localize-22.0.4.tgz",
+      "integrity": "sha512-BJELtGDcTqPjNn10pUa5Ly0Zv+yOyhNOhMl7OA7izRwgK0bWCqgTRnCFh9OWuvn+KyTLfsd9HKVxSDTmtJYEJQ==",
+      "dev": true,
+      "license": "MIT",
+      "dependencies": {
+        "@babel/core": "7.29.7",
+        "@types/babel__core": "7.20.5",
+        "tinyglobby": "^0.2.12",
+        "yargs": "^18.0.0"
+      },
+      "bin": {
+        "localize-extract": "tools/bundles/src/extract/cli.js",
+        "localize-migrate": "tools/bundles/src/migrate/cli.js",
+        "localize-translate": "tools/bundles/src/translate/cli.js"
+      },
+      "engines": {
+        "node": "^22.22.3 || ^24.15.0 || >=26.0.0"
+      },
+      "peerDependencies": {
+        "@angular/compiler": "22.0.4",
+        "@angular/compiler-cli": "22.0.4"
+      }
+    },
+    "node_modules/@angular/localize/node_modules/@babel/core": {
+      "version": "7.29.7",
+      "resolved": "https://registry.npmjs.org/@babel/core/-/core-7.29.7.tgz",
+      "integrity": "sha512-RgHBCvtjbOK2gXSNBNIkNoEc9qoVEtau3hj8gEqKQuL3HZAibKarWFEI3Lfm6EYKkLalOh8eSrj9b+ch9H/VBA==",
+      "dev": true,
+      "license": "MIT",
+      "dependencies": {
+        "@babel/code-frame": "^7.29.7",
+        "@babel/generator": "^7.29.7",
+        "@babel/helper-compilation-targets": "^7.29.7",
+        "@babel/helper-module-transforms": "^7.29.7",
+        "@babel/helpers": "^7.29.7",
+        "@babel/parser": "^7.29.7",
+        "@babel/template": "^7.29.7",
+        "@babel/traverse": "^7.29.7",
+        "@babel/types": "^7.29.7",
+        "@jridgewell/remapping": "^2.3.5",
+        "convert-source-map": "^2.0.0",
+        "debug": "^4.1.0",
+        "gensync": "^1.0.0-beta.2",
+        "json5": "^2.2.3",
+        "semver": "^6.3.1"
+      },
+      "engines": {
+        "node": ">=6.9.0"
+      },
+      "funding": {
+        "type": "opencollective",
+        "url": "https://opencollective.com/babel"
+      }
+    },
+    "node_modules/@angular/localize/node_modules/convert-source-map": {
+      "version": "2.0.0",
+      "resolved": "https://registry.npmjs.org/convert-source-map/-/convert-source-map-2.0.0.tgz",
+      "integrity": "sha512-Kvp459HrV2FEJ1CAsi1Ku+MY3kasH19TFykTz2xWmMeq6bk2NU3XXvfJ+Q61m0xktWwt+1HSYf3JZsTms3aRJg==",
+      "dev": true,
+      "license": "MIT"
+    },
+    "node_modules/@angular/localize/node_modules/semver": {
+      "version": "6.3.1",
+      "resolved": "https://registry.npmjs.org/semver/-/semver-6.3.1.tgz",
+      "integrity": "sha512-BR7VvDCVHO+q2xBEWskxS6DJE1qRnb7DxzUrogb71CWoSficBxYsiAGd+Kl0mmq/MprG9yArRkyrQxTO6XjMzA==",
+      "dev": true,
+      "license": "ISC",
+      "bin": {
+        "semver": "bin/semver.js"
+      }
+    },
     "node_modules/@angular/platform-browser": {
       "version": "22.0.2",
       "resolved": "https://registry.npmjs.org/@angular/platform-browser/-/platform-browser-22.0.2.tgz",
@@ -8317,6 +8391,51 @@
         "tslib": "^2.4.0"
       }
     },
+    "node_modules/@types/babel__core": {
+      "version": "7.20.5",
+      "resolved": "https://registry.npmjs.org/@types/babel__core/-/babel__core-7.20.5.tgz",
+      "integrity": "sha512-qoQprZvz5wQFJwMDqeseRXWv3rqMvhgpbXFfVyWhbx9X47POIA6i/+dXefEmZKoAgOaTdaIgNSMqMIU61yRyzA==",
+      "dev": true,
+      "license": "MIT",
+      "dependencies": {
+        "@babel/parser": "^7.20.7",
+        "@babel/types": "^7.20.7",
+        "@types/babel__generator": "*",
+        "@types/babel__template": "*",
+        "@types/babel__traverse": "*"
+      }
+    },
+    "node_modules/@types/babel__generator": {
+      "version": "7.27.0",
+      "resolved": "https://registry.npmjs.org/@types/babel__generator/-/babel__generator-7.27.0.tgz",
+      "integrity": "sha512-ufFd2Xi92OAVPYsy+P4n7/U7e68fex0+Ee8gSG9KX7eo084CWiQ4sdxktvdl0bOPupXtVJPY19zk6EwWqUQ8lg==",
+      "dev": true,
+      "license": "MIT",
+      "dependencies": {
+        "@babel/types": "^7.0.0"
+      }
+    },
+    "node_modules/@types/babel__template": {
+      "version": "7.4.4",
+      "resolved": "https://registry.npmjs.org/@types/babel__template/-/babel__template-7.4.4.tgz",
+      "integrity": "sha512-h/NUaSyG5EyxBIp8YRxo4RMe2/qQgvyowRwVMzhYhBCONbW8PUsg4lkFMrhgZhUe5z3L3MiLDuvyJ/CaPa2A8A==",
+      "dev": true,
+      "license": "MIT",
+      "dependencies": {
+        "@babel/parser": "^7.1.0",
+        "@babel/types": "^7.0.0"
+      }
+    },
+    "node_modules/@types/babel__traverse": {
+      "version": "7.28.0",
+      "resolved": "https://registry.npmjs.org/@types/babel__traverse/-/babel__traverse-7.28.0.tgz",
+      "integrity": "sha512-8PvcXf70gTDZBgt9ptxJ8elBeBjcLOAcOtoO/mPJjtji1+CdGbHgm77om1GrsPxsiE+uXIpNSK64UYaIwQXd4Q==",
+      "dev": true,
+      "license": "MIT",
+      "dependencies": {
+        "@babel/types": "^7.28.2"
+      }
+    },
     "node_modules/@types/body-parser": {
       "version": "1.19.6",
       "resolved": "https://registry.npmjs.org/@types/body-parser/-/body-parser-1.19.6.tgz",