diff --git a/web/package-lock.json b/web/package-lock.json
index 9d195ae..1f4167e 100644
--- a/web/package-lock.json
+++ b/web/package-lock.json
@@ -8,6 +8,9 @@
       "name": "vibe-erp-web",
       "version": "0.0.0",
       "dependencies": {
+        "@rjsf/core": "^5.24.13",
+        "@rjsf/utils": "^5.24.13",
+        "@rjsf/validator-ajv8": "^5.24.13",
         "react": "^18.3.1",
         "react-dom": "^18.3.1",
         "react-router-dom": "^6.28.0"
@@ -807,6 +810,62 @@
         "node": ">=14.0.0"
       }
     },
+    "node_modules/@rjsf/core": {
+      "version": "5.24.13",
+      "resolved": "https://registry.npmjs.org/@rjsf/core/-/core-5.24.13.tgz",
+      "integrity": "sha512-ONTr14s7LFIjx2VRFLuOpagL76sM/HPy6/OhdBfq6UukINmTIs6+aFN0GgcR0aXQHFDXQ7f/fel0o/SO05Htdg==",
+      "license": "Apache-2.0",
+      "dependencies": {
+        "lodash": "^4.17.21",
+        "lodash-es": "^4.17.21",
+        "markdown-to-jsx": "^7.4.1",
+        "prop-types": "^15.8.1"
+      },
+      "engines": {
+        "node": ">=14"
+      },
+      "peerDependencies": {
+        "@rjsf/utils": "^5.24.x",
+        "react": "^16.14.0 || >=17"
+      }
+    },
+    "node_modules/@rjsf/utils": {
+      "version": "5.24.13",
+      "resolved": "https://registry.npmjs.org/@rjsf/utils/-/utils-5.24.13.tgz",
+      "integrity": "sha512-rNF8tDxIwTtXzz5O/U23QU73nlhgQNYJ+Sv5BAwQOIyhIE2Z3S5tUiSVMwZHt0julkv/Ryfwi+qsD4FiE5rOuw==",
+      "license": "Apache-2.0",
+      "dependencies": {
+        "json-schema-merge-allof": "^0.8.1",
+        "jsonpointer": "^5.0.1",
+        "lodash": "^4.17.21",
+        "lodash-es": "^4.17.21",
+        "react-is": "^18.2.0"
+      },
+      "engines": {
+        "node": ">=14"
+      },
+      "peerDependencies": {
+        "react": "^16.14.0 || >=17"
+      }
+    },
+    "node_modules/@rjsf/validator-ajv8": {
+      "version": "5.24.13",
+      "resolved": "https://registry.npmjs.org/@rjsf/validator-ajv8/-/validator-ajv8-5.24.13.tgz",
+      "integrity": "sha512-oWHP7YK581M8I5cF1t+UXFavnv+bhcqjtL1a7MG/Kaffi0EwhgcYjODrD8SsnrhncsEYMqSECr4ZOEoirnEUWw==",
+      "license": "Apache-2.0",
+      "dependencies": {
+        "ajv": "^8.12.0",
+        "ajv-formats": "^2.1.1",
+        "lodash": "^4.17.21",
+        "lodash-es": "^4.17.21"
+      },
+      "engines": {
+        "node": ">=14"
+      },
+      "peerDependencies": {
+        "@rjsf/utils": "^5.24.x"
+      }
+    },
     "node_modules/@rolldown/pluginutils": {
       "version": "1.0.0-beta.27",
       "resolved": "https://registry.npmjs.org/@rolldown/pluginutils/-/pluginutils-1.0.0-beta.27.tgz",
@@ -1314,6 +1373,39 @@
         "vite": "^4.2.0 || ^5.0.0 || ^6.0.0 || ^7.0.0"
       }
     },
+    "node_modules/ajv": {
+      "version": "8.18.0",
+      "resolved": "https://registry.npmjs.org/ajv/-/ajv-8.18.0.tgz",
+      "integrity": "sha512-PlXPeEWMXMZ7sPYOHqmDyCJzcfNrUr3fGNKtezX14ykXOEIvyK81d+qydx89KY5O71FKMPaQ2vBfBFI5NHR63A==",
+      "license": "MIT",
+      "dependencies": {
+        "fast-deep-equal": "^3.1.3",
+        "fast-uri": "^3.0.1",
+        "json-schema-traverse": "^1.0.0",
+        "require-from-string": "^2.0.2"
+      },
+      "funding": {
+        "type": "github",
+        "url": "https://github.com/sponsors/epoberezkin"
+      }
+    },
+    "node_modules/ajv-formats": {
+      "version": "2.1.1",
+      "resolved": "https://registry.npmjs.org/ajv-formats/-/ajv-formats-2.1.1.tgz",
+      "integrity": "sha512-Wx0Kx52hxE7C18hkMEggYlEifqWZtYaRgouJor+WMdPnQyEK13vgEWyVNup7SoeeoLMsr4kf5h6dOW11I15MUA==",
+      "license": "MIT",
+      "dependencies": {
+        "ajv": "^8.0.0"
+      },
+      "peerDependencies": {
+        "ajv": "^8.0.0"
+      },
+      "peerDependenciesMeta": {
+        "ajv": {
+          "optional": true
+        }
+      }
+    },
     "node_modules/any-promise": {
       "version": "1.3.0",
       "resolved": "https://registry.npmjs.org/any-promise/-/any-promise-1.3.0.tgz",
@@ -1531,6 +1623,27 @@
         "node": ">= 6"
       }
     },
+    "node_modules/compute-gcd": {
+      "version": "1.2.1",
+      "resolved": "https://registry.npmjs.org/compute-gcd/-/compute-gcd-1.2.1.tgz",
+      "integrity": "sha512-TwMbxBNz0l71+8Sc4czv13h4kEqnchV9igQZBi6QUaz09dnz13juGnnaWWJTRsP3brxOoxeB4SA2WELLw1hCtg==",
+      "dependencies": {
+        "validate.io-array": "^1.0.3",
+        "validate.io-function": "^1.0.2",
+        "validate.io-integer-array": "^1.0.0"
+      }
+    },
+    "node_modules/compute-lcm": {
+      "version": "1.1.2",
+      "resolved": "https://registry.npmjs.org/compute-lcm/-/compute-lcm-1.1.2.tgz",
+      "integrity": "sha512-OFNPdQAXnQhDSKioX8/XYT6sdUlXwpeMjfd6ApxMJfyZ4GxmLR1xvMERctlYhlHwIiz6CSpBc2+qYKjHGZw4TQ==",
+      "dependencies": {
+        "compute-gcd": "^1.2.1",
+        "validate.io-array": "^1.0.3",
+        "validate.io-function": "^1.0.2",
+        "validate.io-integer-array": "^1.0.0"
+      }
+    },
     "node_modules/convert-source-map": {
       "version": "2.0.0",
       "resolved": "https://registry.npmjs.org/convert-source-map/-/convert-source-map-2.0.0.tgz",
@@ -1646,6 +1759,12 @@
         "node": ">=6"
       }
     },
+    "node_modules/fast-deep-equal": {
+      "version": "3.1.3",
+      "resolved": "https://registry.npmjs.org/fast-deep-equal/-/fast-deep-equal-3.1.3.tgz",
+      "integrity": "sha512-f3qQ9oQy9j2AhBe/H9VC91wLmKBCCU/gDOnKNAYG5hswO7BLKj09Hc5HYNz9cGI++xlpDCIgDaitVs03ATR84Q==",
+      "license": "MIT"
+    },
     "node_modules/fast-glob": {
       "version": "3.3.3",
       "resolved": "https://registry.npmjs.org/fast-glob/-/fast-glob-3.3.3.tgz",
@@ -1676,6 +1795,22 @@
         "node": ">= 6"
       }
     },
+    "node_modules/fast-uri": {
+      "version": "3.1.0",
+      "resolved": "https://registry.npmjs.org/fast-uri/-/fast-uri-3.1.0.tgz",
+      "integrity": "sha512-iPeeDKJSWf4IEOasVVrknXpaBV0IApz/gp7S2bb7Z4Lljbl2MGJRqInZiUrQwV16cpzw/D3S5j5Julj/gT52AA==",
+      "funding": [
+        {
+          "type": "github",
+          "url": "https://github.com/sponsors/fastify"
+        },
+        {
+          "type": "opencollective",
+          "url": "https://opencollective.com/fastify"
+        }
+      ],
+      "license": "BSD-3-Clause"
+    },
     "node_modules/fastq": {
       "version": "1.20.1",
       "resolved": "https://registry.npmjs.org/fastq/-/fastq-1.20.1.tgz",
@@ -1865,6 +2000,35 @@
         "node": ">=6"
       }
     },
+    "node_modules/json-schema-compare": {
+      "version": "0.2.2",
+      "resolved": "https://registry.npmjs.org/json-schema-compare/-/json-schema-compare-0.2.2.tgz",
+      "integrity": "sha512-c4WYmDKyJXhs7WWvAWm3uIYnfyWFoIp+JEoX34rctVvEkMYCPGhXtvmFFXiffBbxfZsvQ0RNnV5H7GvDF5HCqQ==",
+      "license": "MIT",
+      "dependencies": {
+        "lodash": "^4.17.4"
+      }
+    },
+    "node_modules/json-schema-merge-allof": {
+      "version": "0.8.1",
+      "resolved": "https://registry.npmjs.org/json-schema-merge-allof/-/json-schema-merge-allof-0.8.1.tgz",
+      "integrity": "sha512-CTUKmIlPJbsWfzRRnOXz+0MjIqvnleIXwFTzz+t9T86HnYX/Rozria6ZVGLktAU9e+NygNljveP+yxqtQp/Q4w==",
+      "license": "MIT",
+      "dependencies": {
+        "compute-lcm": "^1.1.2",
+        "json-schema-compare": "^0.2.2",
+        "lodash": "^4.17.20"
+      },
+      "engines": {
+        "node": ">=12.0.0"
+      }
+    },
+    "node_modules/json-schema-traverse": {
+      "version": "1.0.0",
+      "resolved": "https://registry.npmjs.org/json-schema-traverse/-/json-schema-traverse-1.0.0.tgz",
+      "integrity": "sha512-NM8/P9n3XjXhIZn1lLhkFaACTOURQXjWhV4BA/RnOv8xvgqtqpAX9IO4mRQxSx1Rlo4tqzeqb0sOlruaOy3dug==",
+      "license": "MIT"
+    },
     "node_modules/json5": {
       "version": "2.2.3",
       "resolved": "https://registry.npmjs.org/json5/-/json5-2.2.3.tgz",
@@ -1878,6 +2042,15 @@
         "node": ">=6"
       }
     },
+    "node_modules/jsonpointer": {
+      "version": "5.0.1",
+      "resolved": "https://registry.npmjs.org/jsonpointer/-/jsonpointer-5.0.1.tgz",
+      "integrity": "sha512-p/nXbhSEcu3pZRdkW1OfJhpsVtW1gd4Wa1fnQc9YLiTfAjn0312eMKimbdIQzuZl9aa9xUGaRlP9T/CJE/ditQ==",
+      "license": "MIT",
+      "engines": {
+        "node": ">=0.10.0"
+      }
+    },
     "node_modules/lilconfig": {
       "version": "3.1.3",
       "resolved": "https://registry.npmjs.org/lilconfig/-/lilconfig-3.1.3.tgz",
@@ -1898,6 +2071,18 @@
       "dev": true,
       "license": "MIT"
     },
+    "node_modules/lodash": {
+      "version": "4.18.1",
+      "resolved": "https://registry.npmjs.org/lodash/-/lodash-4.18.1.tgz",
+      "integrity": "sha512-dMInicTPVE8d1e5otfwmmjlxkZoUpiVLwyeTdUsi/Caj/gfzzblBcCE5sRHV/AsjuCmxWrte2TNGSYuCeCq+0Q==",
+      "license": "MIT"
+    },
+    "node_modules/lodash-es": {
+      "version": "4.18.1",
+      "resolved": "https://registry.npmjs.org/lodash-es/-/lodash-es-4.18.1.tgz",
+      "integrity": "sha512-J8xewKD/Gk22OZbhpOVSwcs60zhd95ESDwezOFuA3/099925PdHJ7OFHNTGtajL3AlZkykD32HykiMo+BIBI8A==",
+      "license": "MIT"
+    },
     "node_modules/loose-envify": {
       "version": "1.4.0",
       "resolved": "https://registry.npmjs.org/loose-envify/-/loose-envify-1.4.0.tgz",
@@ -1920,6 +2105,23 @@
         "yallist": "^3.0.2"
       }
     },
+    "node_modules/markdown-to-jsx": {
+      "version": "7.7.17",
+      "resolved": "https://registry.npmjs.org/markdown-to-jsx/-/markdown-to-jsx-7.7.17.tgz",
+      "integrity": "sha512-7mG/1feQ0TX5I7YyMZVDgCC/y2I3CiEhIRQIhyov9nGBP5eoVrOXXHuL5ZP8GRfxVZKRiXWJgwXkb9It+nQZfQ==",
+      "license": "MIT",
+      "engines": {
+        "node": ">= 10"
+      },
+      "peerDependencies": {
+        "react": ">= 0.14.0"
+      },
+      "peerDependenciesMeta": {
+        "react": {
+          "optional": true
+        }
+      }
+    },
     "node_modules/merge2": {
       "version": "1.4.1",
       "resolved": "https://registry.npmjs.org/merge2/-/merge2-1.4.1.tgz",
@@ -2003,7 +2205,6 @@
       "version": "4.1.1",
       "resolved": "https://registry.npmjs.org/object-assign/-/object-assign-4.1.1.tgz",
       "integrity": "sha512-rJgTQnkUnH1sFw8yT6VSU3zD3sWmu6sZhIseY8VX+GRu3P6F7Fu+JNDoXfklElbLJSnc3FUQHVe4cU5hj+BcUg==",
-      "dev": true,
       "license": "MIT",
       "engines": {
         "node": ">=0.10.0"
@@ -2229,6 +2430,23 @@
       "dev": true,
       "license": "MIT"
     },
+    "node_modules/prop-types": {
+      "version": "15.8.1",
+      "resolved": "https://registry.npmjs.org/prop-types/-/prop-types-15.8.1.tgz",
+      "integrity": "sha512-oj87CgZICdulUohogVAR7AjlC0327U4el4L6eAvOqCeudMDVU0NThNaV+b9Df4dXgSP1gXMTnPdhfe/2qDH5cg==",
+      "license": "MIT",
+      "dependencies": {
+        "loose-envify": "^1.4.0",
+        "object-assign": "^4.1.1",
+        "react-is": "^16.13.1"
+      }
+    },
+    "node_modules/prop-types/node_modules/react-is": {
+      "version": "16.13.1",
+      "resolved": "https://registry.npmjs.org/react-is/-/react-is-16.13.1.tgz",
+      "integrity": "sha512-24e6ynE2H+OKt4kqsOvNd8kBpV65zoxbA4BVsEOB3ARVWQki/DHzaUoC5KuON/BiccDaCCTZBuOcfZs70kR8bQ==",
+      "license": "MIT"
+    },
     "node_modules/queue-microtask": {
       "version": "1.2.3",
       "resolved": "https://registry.npmjs.org/queue-microtask/-/queue-microtask-1.2.3.tgz",
@@ -2275,6 +2493,12 @@
         "react": "^18.3.1"
       }
     },
+    "node_modules/react-is": {
+      "version": "18.3.1",
+      "resolved": "https://registry.npmjs.org/react-is/-/react-is-18.3.1.tgz",
+      "integrity": "sha512-/LLMVyas0ljjAtoYiPqYiL8VWXzUUdThrmU5+n20DZv+a+ClRoevUzw5JxU+Ieh5/c87ytoTBV9G1FiKfNJdmg==",
+      "license": "MIT"
+    },
     "node_modules/react-refresh": {
       "version": "0.17.0",
       "resolved": "https://registry.npmjs.org/react-refresh/-/react-refresh-0.17.0.tgz",
@@ -2340,6 +2564,15 @@
         "node": ">=8.10.0"
       }
     },
+    "node_modules/require-from-string": {
+      "version": "2.0.2",
+      "resolved": "https://registry.npmjs.org/require-from-string/-/require-from-string-2.0.2.tgz",
+      "integrity": "sha512-Xf0nWe6RseziFMu+Ap9biiUbmplq6S9/p+7w7YXP/JBHhrUDDUhwa+vANyubuqfZWTveU//DYVGsDG7RKL/vEw==",
+      "license": "MIT",
+      "engines": {
+        "node": ">=0.10.0"
+      }
+    },
     "node_modules/resolve": {
       "version": "1.22.11",
       "resolved": "https://registry.npmjs.org/resolve/-/resolve-1.22.11.tgz",
@@ -2694,6 +2927,39 @@
       "dev": true,
       "license": "MIT"
     },
+    "node_modules/validate.io-array": {
+      "version": "1.0.6",
+      "resolved": "https://registry.npmjs.org/validate.io-array/-/validate.io-array-1.0.6.tgz",
+      "integrity": "sha512-DeOy7CnPEziggrOO5CZhVKJw6S3Yi7e9e65R1Nl/RTN1vTQKnzjfvks0/8kQ40FP/dsjRAOd4hxmJ7uLa6vxkg==",
+      "license": "MIT"
+    },
+    "node_modules/validate.io-function": {
+      "version": "1.0.2",
+      "resolved": "https://registry.npmjs.org/validate.io-function/-/validate.io-function-1.0.2.tgz",
+      "integrity": "sha512-LlFybRJEriSuBnUhQyG5bwglhh50EpTL2ul23MPIuR1odjO7XaMLFV8vHGwp7AZciFxtYOeiSCT5st+XSPONiQ=="
+    },
+    "node_modules/validate.io-integer": {
+      "version": "1.0.5",
+      "resolved": "https://registry.npmjs.org/validate.io-integer/-/validate.io-integer-1.0.5.tgz",
+      "integrity": "sha512-22izsYSLojN/P6bppBqhgUDjCkr5RY2jd+N2a3DCAUey8ydvrZ/OkGvFPR7qfOpwR2LC5p4Ngzxz36g5Vgr/hQ==",
+      "dependencies": {
+        "validate.io-number": "^1.0.3"
+      }
+    },
+    "node_modules/validate.io-integer-array": {
+      "version": "1.0.0",
+      "resolved": "https://registry.npmjs.org/validate.io-integer-array/-/validate.io-integer-array-1.0.0.tgz",
+      "integrity": "sha512-mTrMk/1ytQHtCY0oNO3dztafHYyGU88KL+jRxWuzfOmQb+4qqnWmI+gykvGp8usKZOM0H7keJHEbRaFiYA0VrA==",
+      "dependencies": {
+        "validate.io-array": "^1.0.3",
+        "validate.io-integer": "^1.0.4"
+      }
+    },
+    "node_modules/validate.io-number": {
+      "version": "1.0.3",
+      "resolved": "https://registry.npmjs.org/validate.io-number/-/validate.io-number-1.0.3.tgz",
+      "integrity": "sha512-kRAyotcbNaSYoDnXvb4MHg/0a1egJdLwS6oJ38TJY7aw9n93Fl/3blIXdyYvPOp55CNxywooG/3BcrwNrBpcSg=="
+    },
     "node_modules/vite": {
       "version": "5.4.21",
       "resolved": "https://registry.npmjs.org/vite/-/vite-5.4.21.tgz",
diff --git a/web/package.json b/web/package.json
index 17c449c..bb0006e 100644
--- a/web/package.json
+++ b/web/package.json
@@ -9,6 +9,9 @@
     "preview": "vite preview"
   },
   "dependencies": {
+    "@rjsf/core": "^5.24.13",
+    "@rjsf/utils": "^5.24.13",
+    "@rjsf/validator-ajv8": "^5.24.13",
     "react": "^18.3.1",
     "react-dom": "^18.3.1",
     "react-router-dom": "^6.28.0"
diff --git a/web/src/App.tsx b/web/src/App.tsx
index ae02fcc..c0e67d1 100644
--- a/web/src/App.tsx
+++ b/web/src/App.tsx
@@ -42,6 +42,11 @@ import { ShopFloorPage } from '@/pages/ShopFloorPage'
 import { AccountsPage } from '@/pages/AccountsPage'
 import { JournalEntriesPage } from '@/pages/JournalEntriesPage'
 
+// Stub pages (will be replaced in later tasks)
+function MetadataAdminPage() { return <div>Metadata Admin - coming soon</div> }
+function FormDesignerPage() { return <div>Form Designer - coming soon</div> }
+function ListViewDesignerPage() { return <div>List View Designer - coming soon</div> }
+
 export default function App() {
   return (
     <Routes>
@@ -83,6 +88,11 @@ export default function App() {
         <Route path="shop-floor" element={<ShopFloorPage />} />
         <Route path="accounts" element={<AccountsPage />} />
         <Route path="journal-entries" element={<JournalEntriesPage />} />
+        <Route path="admin/metadata" element={<MetadataAdminPage />} />
+        <Route path="admin/metadata/forms/new" element={<FormDesignerPage />} />
+        <Route path="admin/metadata/forms/:slug/edit" element={<FormDesignerPage />} />
+        <Route path="admin/metadata/list-views/new" element={<ListViewDesignerPage />} />
+        <Route path="admin/metadata/list-views/:slug/edit" element={<ListViewDesignerPage />} />
       </Route>
       <Route path="*" element={<Navigate to="/" replace />} />
     </Routes>
diff --git a/web/src/api/client.ts b/web/src/api/client.ts
index 2b53941..3727bcd 100644
--- a/web/src/api/client.ts
+++ b/web/src/api/client.ts
@@ -26,9 +26,14 @@
 
 import type {
   Account,
+  CustomFieldDef,
+  FormDefinition,
   Item,
   JournalEntry,
+  ListViewDefinition,
   Location,
+  MetadataEntity,
+  MetadataPermission,
   MetaInfo,
   Partner,
   PurchaseOrder,
@@ -75,7 +80,7 @@ export function registerUnauthorizedHandler(handler: () => void) {
   onUnauthorized = handler
 }
 
-async function apiFetch<T>(
+export async function apiFetch<T>(
   path: string,
   init: RequestInit = {},
   expectJson = true,
@@ -283,6 +288,36 @@ export const production = {
 
 // ─── Finance ─────────────────────────────────────────────────────────
 
+// ─── Metadata admin ─────────────────────────────────────────────────
+
+export const metadata = {
+  entities: () => apiFetch<MetadataEntity[]>('/api/v1/_meta/metadata/entities'),
+  permissions: () => apiFetch<MetadataPermission[]>('/api/v1/_meta/metadata/permissions'),
+  menus: () => apiFetch<any[]>('/api/v1/_meta/metadata/menus'),
+  customFields: () => apiFetch<CustomFieldDef[]>('/api/v1/_meta/metadata/custom-fields'),
+  customFieldsFor: (entity: string) => apiFetch<CustomFieldDef[]>(`/api/v1/_meta/metadata/custom-fields/${entity}`),
+  listForms: () => apiFetch<FormDefinition[]>('/api/v1/_meta/metadata/forms'),
+  getForm: (slug: string) => apiFetch<FormDefinition>(`/api/v1/_meta/metadata/forms/${slug}`),
+  saveForm: (slug: string, body: Omit<FormDefinition, 'source'>) =>
+    apiFetch<FormDefinition>(`/api/v1/_meta/metadata/forms/${slug}`, { method: 'PUT', body: JSON.stringify(body) }),
+  deleteForm: (slug: string) =>
+    apiFetch<void>(`/api/v1/_meta/metadata/forms/${slug}`, { method: 'DELETE' }, false),
+  listListViews: () => apiFetch<ListViewDefinition[]>('/api/v1/_meta/metadata/list-views'),
+  getListView: (slug: string) => apiFetch<ListViewDefinition>(`/api/v1/_meta/metadata/list-views/${slug}`),
+  saveListView: (slug: string, body: Omit<ListViewDefinition, 'source'>) =>
+    apiFetch<ListViewDefinition>(`/api/v1/_meta/metadata/list-views/${slug}`, { method: 'PUT', body: JSON.stringify(body) }),
+  deleteListView: (slug: string) =>
+    apiFetch<void>(`/api/v1/_meta/metadata/list-views/${slug}`, { method: 'DELETE' }, false),
+  createCustomField: (body: Omit<CustomFieldDef, 'source'>) =>
+    apiFetch<CustomFieldDef>('/api/v1/_meta/metadata/custom-fields', { method: 'POST', body: JSON.stringify(body) }),
+  updateCustomField: (key: string, body: Omit<CustomFieldDef, 'source'>) =>
+    apiFetch<CustomFieldDef>(`/api/v1/_meta/metadata/custom-fields/${key}`, { method: 'PUT', body: JSON.stringify(body) }),
+  deleteCustomField: (key: string) =>
+    apiFetch<void>(`/api/v1/_meta/metadata/custom-fields/${key}`, { method: 'DELETE' }, false),
+}
+
+// ─── Finance ─────────────────────────────────────────────────────────
+
 export const finance = {
   listAccounts: () => apiFetch<Account[]>('/api/v1/finance/accounts'),
   createAccount: (body: {
diff --git a/web/src/i18n/messages.ts b/web/src/i18n/messages.ts
index b4b409d..5eae9bb 100644
--- a/web/src/i18n/messages.ts
+++ b/web/src/i18n/messages.ts
@@ -35,6 +35,7 @@ export const en = {
   'nav.system': 'System',
   'nav.users': 'Users',
   'nav.roles': 'Roles',
+  'nav.metadataAdmin': 'Metadata',
 
   // ─── Actions ───────────────────────────────────────────────
   'action.confirm': 'Confirm',
@@ -62,6 +63,11 @@ export const en = {
   'action.newRole': '+ New Role',
   'action.newAccount': '+ New Account',
   'action.adjustStock': 'Adjust Stock',
+  'action.addField': 'Add Field',
+  'action.addSection': 'Add Section',
+  'action.discard': 'Discard',
+  'action.delete': 'Delete',
+  'action.newCustomField': 'New Custom Field',
 
   // ─── Status badges ────────────────────────────────────────
   'status.DRAFT': 'Draft',
@@ -96,6 +102,30 @@ export const en = {
   'label.noRows': 'No rows.',
   'label.loading': 'Loading…',
   'label.error': 'Error',
+
+  // ─── Metadata admin ───────────────────────────────────────
+  'page.metadataAdmin.title': 'Metadata Admin',
+  'tab.entities': 'Entities',
+  'tab.customFields': 'Custom Fields',
+  'tab.permissions': 'Permissions',
+  'tab.menus': 'Menus',
+  'tab.forms': 'Forms',
+  'tab.listViews': 'List Views',
+  'page.formDesigner.title': 'Form Designer',
+  'page.listViewDesigner.title': 'List View Designer',
+  'label.slug': 'Slug',
+  'label.entity': 'Entity',
+  'label.purpose': 'Purpose',
+  'label.preview': 'Preview',
+  'label.source': 'Source',
+  'label.columns': 'Columns',
+  'label.filters': 'Filters',
+  'label.sorting': 'Sorting',
+  'label.pageSize': 'Page Size',
+  'label.fieldKey': 'Field Key',
+  'label.targetEntity': 'Target Entity',
+  'label.fieldType': 'Field Type',
+  'confirm.delete': 'Are you sure?',
 } as const
 
 export const zhCN: Record<MessageKey, string> = {
@@ -122,6 +152,7 @@ export const zhCN: Record<MessageKey, string> = {
   'nav.system': '系统',
   'nav.users': '用户',
   'nav.roles': '角色',
+  'nav.metadataAdmin': '元数据',
 
   // ─── 操作 ──────────────────────────────────────────────────
   'action.confirm': '确认',
@@ -149,6 +180,11 @@ export const zhCN: Record<MessageKey, string> = {
   'action.newRole': '+ 新角色',
   'action.newAccount': '+ 新科目',
   'action.adjustStock': '库存调整',
+  'action.addField': '添加字段',
+  'action.addSection': '添加分区',
+  'action.discard': '放弃',
+  'action.delete': '删除',
+  'action.newCustomField': '新建自定义字段',
 
   // ─── 状态 ──────────────────────────────────────────────────
   'status.DRAFT': '草稿',
@@ -183,6 +219,30 @@ export const zhCN: Record<MessageKey, string> = {
   'label.noRows': '暂无数据',
   'label.loading': '加载中…',
   'label.error': '错误',
+
+  // ─── 元数据管理 ────────────────────────────────────────────
+  'page.metadataAdmin.title': '元数据管理',
+  'tab.entities': '实体',
+  'tab.customFields': '自定义字段',
+  'tab.permissions': '权限',
+  'tab.menus': '菜单',
+  'tab.forms': '表单',
+  'tab.listViews': '列表视图',
+  'page.formDesigner.title': '表单设计器',
+  'page.listViewDesigner.title': '列表视图设计器',
+  'label.slug': '标识',
+  'label.entity': '实体',
+  'label.purpose': '用途',
+  'label.preview': '预览',
+  'label.source': '来源',
+  'label.columns': '列',
+  'label.filters': '筛选',
+  'label.sorting': '排序',
+  'label.pageSize': '每页行数',
+  'label.fieldKey': '字段键',
+  'label.targetEntity': '目标实体',
+  'label.fieldType': '字段类型',
+  'confirm.delete': '确定删除？',
 }
 
 export const locales = {
diff --git a/web/src/layout/AppLayout.tsx b/web/src/layout/AppLayout.tsx
index 6e1745b..d238347 100644
--- a/web/src/layout/AppLayout.tsx
+++ b/web/src/layout/AppLayout.tsx
@@ -64,6 +64,7 @@ const NAV: NavGroup[] = [
     items: [
       { to: '/users', labelKey: 'nav.users' },
       { to: '/roles', labelKey: 'nav.roles' },
+      { to: '/admin/metadata', labelKey: 'nav.metadataAdmin' },
     ],
   },
 ]
diff --git a/web/src/types/api.ts b/web/src/types/api.ts
index f0963d4..85b5627 100644
--- a/web/src/types/api.ts
+++ b/web/src/types/api.ts
@@ -284,3 +284,71 @@ export interface JournalEntry {
   postedAt: string
   lines: JournalEntryLine[]
 }
+
+// ─── Metadata Definitions ───────────────────────────────────────────
+
+export type FormPurpose = 'create' | 'edit' | 'user-task' | 'view'
+
+export interface FormDefinition {
+  entityName: string
+  slug: string
+  title: string
+  purpose: FormPurpose
+  jsonSchema: Record<string, unknown>
+  uiSchema: Record<string, unknown>
+  version: number
+  source?: string
+}
+
+export interface ListViewColumnDef {
+  field: string
+  label: string
+  width?: string
+  sortable: boolean
+  format?: 'date' | 'money' | 'status-badge' | 'link'
+}
+
+export interface ListViewDefinition {
+  entityName: string
+  slug: string
+  title: string
+  columns: ListViewColumnDef[]
+  defaultSort?: { field: string; direction: 'asc' | 'desc' }
+  filters?: { field: string; operator: string; label: string }[]
+  pageSize: number
+  version: number
+  source?: string
+}
+
+export interface CustomFieldType {
+  kind: string
+  maxLength?: number
+  precision?: number
+  scale?: number
+  targetEntity?: string
+  allowedValues?: string[]
+}
+
+export interface CustomFieldDef {
+  key: string
+  targetEntity: string
+  type: CustomFieldType
+  required: boolean
+  pii: boolean
+  labelTranslations: Record<string, string>
+  source?: string
+}
+
+export interface MetadataEntity {
+  name: string
+  pbc: string
+  table: string
+  description?: string
+  source?: string
+}
+
+export interface MetadataPermission {
+  key: string
+  description: string
+  source?: string
+}