diff --git a/app/src/composables/configPanels.ts b/app/src/composables/configPanels.ts
new file mode 100644
index 00000000..f303f82b
--- /dev/null
+++ b/app/src/composables/configPanels.ts
@@ -0,0 +1,372 @@
+import evaluate from 'simple-evaluate'
+import { computed, ref, toValue, type MaybeRefOrGetter, type Ref } from 'vue'
+import { useI18n } from 'vue-i18n'
+
+import { asUnreffed, isObjectLiteral } from '@/helpers/commons'
+import * as validators from '@/helpers/validators'
+import { formatI18nField } from '@/helpers/yunohostArguments'
+import type { MergeUnion, Obj } from '@/types/commons'
+import type {
+  AnyFormField,
+  ConfigPanel,
+  ConfigPanels,
+} from '@/types/configPanels'
+import { OPTION_COMPONENT_RESOLVER, isIn } from '@/types/configPanels'
+import type {
+  AnyOption,
+  AnyWritableOption,
+  CoreConfigPanel,
+  CoreConfigPanels,
+  JSExpression,
+} from '@/types/core/options'
+import {
+  ANY_DISPLAY_OPTION_TYPE,
+  ANY_INPUT_OPTION_TYPE,
+  ANY_WRITABLE_OPTION_TYPE,
+} from '@/types/core/options'
+import type {
+  AnyDisplayItemProps,
+  AnyWritableItemProps,
+  FormField,
+  FormFieldDict,
+  FormFieldDisplay,
+  FormFieldReadonly,
+} from '@/types/form'
+import {
+  isAdressModelValue,
+  isFileModelValue,
+  isNonWritableComponent,
+} from '@/types/form'
+
+function formatOptionValue(option: AnyWritableOption) {
+  let value = option.value ?? null
+
+  if ('tags' === option.type) {
+    // FIXME format in core?
+    if (typeof value === 'string') {
+      value = value.split(',')
+    } else if (!value) {
+      value = []
+    }
+  } else if ('boolean' === option.type) {
+    // FIXME format in core?
+    if (value !== null) {
+      value = ['1', 'yes', 'y', 'true'].includes(String(value).toLowerCase())
+    } else if (option.default !== null && option.default !== undefined) {
+      value = ['1', 'yes', 'y', 'true'].includes(
+        String(option.default).toLowerCase(),
+      )
+    }
+  } else if ('file' === option.type) {
+    value = {
+      // in case of already defined file, we receive only the file path (not the actual file)
+      file: value ? new File([''], value) : null,
+      content: '',
+      current: !!value,
+      removed: false,
+    }
+  }
+
+  if (value === null && option.default !== undefined) {
+    value = option.default
+  }
+
+  return value
+}
+
+/**
+ * Format app install and config panel Option into a Field that can be consumed
+ * by form field components.
+ *
+ * @param option - a core Option written by a packager
+ * @param form - a ref containing all related form values for expressions's evaluations
+ * @return Formated `FormField | FormFieldReadonly | FormFieldDisplay` props with form items props.
+ */
+function formatOption(option: AnyOption, form: Ref<Obj>): AnyFormField {
+  const visible = useExpression(option.visible, form)
+
+  if (isIn(ANY_DISPLAY_OPTION_TYPE, option)) {
+    const component = OPTION_COMPONENT_RESOLVER[option.type]
+    // TODO: could be improved, for simplicity props can be be any display item props
+    // but this is not type safe.
+    const props = {
+      label: formatI18nField(option.ask),
+      id: option.id,
+    } as MergeUnion<AnyDisplayItemProps>
+    const field: FormFieldDisplay<typeof component> = {
+      component,
+      visible,
+      props,
+    }
+
+    if (isIn(['button', 'alert'], option)) {
+      props.type = option.style
+      props.icon = option.icon
+      if (option.type === 'button') {
+        props.enabled = useExpression(option.enabled, form)
+      }
+    }
+
+    return field
+  } else if (isIn(ANY_WRITABLE_OPTION_TYPE, option)) {
+    if ('tags' === option.type && option.choices) {
+      // TODO: update in core directly?
+      option.type = 'tags-select'
+    }
+
+    const component = OPTION_COMPONENT_RESOLVER[option.type]
+    // TODO: could be improved, for simplicity props can be be any writable item props
+    // but this is not type safe.
+    const props = {
+      id: option.id,
+      placeholder: option.example,
+    } as MergeUnion<AnyWritableItemProps>
+    const rules: FormField['rules'] = {}
+    const field:
+      | FormField<typeof component>
+      | FormFieldReadonly<typeof component> = {
+      component,
+      label: formatI18nField(option.ask),
+      props,
+      readonly: option.readonly,
+      rules,
+      visible,
+      description: formatI18nField(option.help),
+    }
+
+    // We don't care about component props in case of readonly
+    if (field.readonly) return field
+
+    const { t } = useI18n()
+
+    if (isIn(ANY_INPUT_OPTION_TYPE, option)) {
+      props.type = isIn(['string', 'path'], option) ? 'text' : option.type
+      // trim
+      // autocomplete
+
+      if (option.type === 'password') {
+        field.description ??= t('good_practices_about_admin_password')
+        rules.passwordLenght = validators.minLength(8)
+        props.placeholder = '••••••••••••'
+      } else if (isIn(['number', 'range'], option)) {
+        rules.numValue = validators.integer
+        props.step = option.step
+
+        if (option.min !== undefined) {
+          rules.minValue = validators.minValue(option.min)
+        }
+        if (option.max !== undefined) {
+          rules.maxValue = validators.maxValue(option.max)
+        }
+      }
+    } else if (isIn(['select', 'user', 'domain', 'app', 'group'], option)) {
+      props.choices = isObjectLiteral(option.choices)
+        ? Object.entries(option.choices).map(([k, v]) => ({
+            text: v,
+            value: k,
+          }))
+        : option.choices // FIXME rename choices to options?
+      if (option.type !== 'select') {
+        field.link = {
+          name: option.type + '-list',
+          text: t(`manage_${option.type}s`),
+        }
+      }
+    } else if (isIn(['tags', 'tags-select'], option)) {
+      // props.limit = option.limit  // FIXME limit is not defined in core?
+      props.placeholder = option.placeholder
+      props.tagIcon = option.icon
+
+      if ('tags-select' === option.type) {
+        props.options = option.choices
+        props.auto = true
+        props.itemsName = ''
+        props.label = option.placeholder
+      }
+    } else if ('boolean' === option.type) {
+      // FIXME
+      // props.choices = option.choices
+    }
+
+    if ('file' === option.type) {
+      props.accept = option.accept
+    }
+
+    if ('boolean' !== option.type && option.optional === false) {
+      rules.required = validators.required
+    }
+
+    if (isIn(['string', 'text', 'path', 'url'], option) && option.pattern) {
+      rules.pattern = validators.helpers.withMessage(
+        formatI18nField(option.pattern.error),
+        validators.helpers.regex(new RegExp(option.pattern.regexp)),
+      )
+    }
+
+    return field
+  } else {
+    throw new TypeError(
+      'Unknown Option type: ' + (option as { type: unknown }).type,
+    )
+  }
+}
+
+/**
+ * Format app install and config panel's options into a form and fields that
+ * can be used to populate `useForm` composable and CardForm component.
+ *
+ * @param options - a core Option array written by a packager
+ * @return An object with form and fields
+ */
+function formatOptions<MV extends Obj>(
+  options: AnyOption[],
+): {
+  fields: FormFieldDict<MV>
+  form: Ref<MV>
+} {
+  const form = ref(
+    Object.fromEntries(
+      options
+        .filter((option) => isIn(ANY_WRITABLE_OPTION_TYPE, option))
+        .map((option) => {
+          return [option.id, formatOptionValue(option as AnyWritableOption)]
+        }),
+    ),
+  ) as Ref<MV>
+
+  return {
+    form,
+    fields: Object.fromEntries(
+      options.map((option) => [option.id, formatOption(option, form)]),
+    ) as FormFieldDict<MV>,
+  }
+}
+
+function formatConfigPanel<NestedMV extends Obj, MV extends Obj<NestedMV>>(
+  panel: CoreConfigPanel<MV>,
+): {
+  form: Ref<NestedMV>
+  panel: ConfigPanel<NestedMV, MV>
+} {
+  const options = panel.sections.flatMap((section) => section.options)
+  const { form, fields } = formatOptions<NestedMV>(options)
+  let hasApplyButton = false
+
+  const sections = panel.sections.map((section) => {
+    const sectionFieldsIds = section.options.map(
+      (option) => option.id,
+    ) as ConfigPanel<NestedMV, MV>['sections'][number]['fields']
+
+    if (
+      !section.is_action_section &&
+      sectionFieldsIds.some((id) => !isNonWritableComponent(fields[id]))
+    ) {
+      hasApplyButton = true
+    }
+
+    return {
+      help: formatI18nField(section.help),
+      fields: sectionFieldsIds,
+      id: section.id,
+      isActionSection: section.is_action_section,
+      name: formatI18nField(section.name),
+      visible: useExpression(section.visible, form),
+    }
+  })
+
+  return {
+    form,
+    panel: {
+      fields,
+      help: formatI18nField(panel.help),
+      hasApplyButton,
+      id: panel.id,
+      name: formatI18nField(panel.name),
+      sections,
+    },
+  }
+}
+
+export function formatConfigPanels<
+  NestedMV extends Obj,
+  MV extends Obj<NestedMV>,
+>(config: CoreConfigPanels<MV>): ConfigPanels<NestedMV, MV> {
+  return config.panels.reduce(
+    (cps, panel_) => {
+      const { form, panel } = formatConfigPanel<NestedMV, MV>(panel_)
+      cps.forms[panel.id] = form
+      cps.panels.push(panel)
+      return cps
+    },
+    {
+      forms: {} as Record<keyof MV, Ref<NestedMV>>,
+      panels: [],
+      routes: config.panels.map((panel) => ({
+        to: { params: { tabId: panel.id } },
+        text: formatI18nField(panel.name),
+        icon: panel.icon || 'wrench',
+      })),
+    } as ConfigPanels<NestedMV, MV>,
+  )
+}
+
+function useExpression(
+  expression: JSExpression | undefined,
+  form: Ref<Obj>,
+): boolean {
+  if (typeof expression === 'boolean') return expression
+  if (typeof expression === 'string') {
+    // FIXME normalize expression in core? ('', 'false', 'true') and rm next 2 lines
+    if (!expression || expression === 'true') return true
+    if (expression === 'false') return false
+    // FIXME remove asUnreffed and manage ref type?
+    return asUnreffed(useEvaluation(expression, form))
+  }
+  return true
+}
+
+/**
+ * Evaluate config panel string expression that can contain regular expressions.
+ * Expressions are evaluated with the config panel's form as context.
+ *
+ * @param expression - A string expression to evaluate as a boolean
+ * @param form - An object to serve as evaluation context
+ * @return A computed boolean
+ */
+function useEvaluation(expression: string, form: MaybeRefOrGetter<Obj>) {
+  function buildContext(f: Obj) {
+    // FIXME deepClone?
+    const ctx: Obj = { ...f }
+    let exp = expression
+
+    for (const key in ctx) {
+      if (isFileModelValue(ctx[key])) {
+        ctx[key] = ctx[key].content
+      }
+      if (isAdressModelValue(ctx[key])) {
+        ctx[key] = ctx[key].value().join('')
+      }
+    }
+
+    // Allow to use match(var,regexp) function
+    const matchRe = /match(\s*(\w+)\s*,\s*"([^"]+)"\s*)/g
+    for (const matched of expression.matchAll(matchRe)) {
+      const [fullMatch, varMatch, regExpMatch] = matched
+      const varName = varMatch + '__re' + matched.index
+      ctx[varName] = new RegExp(regExpMatch, 'm').test(ctx[varMatch])
+      exp = expression.replace(fullMatch, varName)
+    }
+
+    return { exp, ctx }
+  }
+
+  return computed(() => {
+    const { exp, ctx } = buildContext(toValue(form))
+
+    try {
+      return !!evaluate(ctx, exp)
+    } catch {
+      return false
+    }
+  })
+}
diff --git a/app/src/helpers/yunohostArguments.ts b/app/src/helpers/yunohostArguments.ts
index 1fa1e304..27673809 100644
--- a/app/src/helpers/yunohostArguments.ts
+++ b/app/src/helpers/yunohostArguments.ts
@@ -67,394 +67,6 @@ export function adressToFormValue(address) {
   return { localPart, separator, domain }
 }
 
-/**
- * Evaluate config panel string expression that can contain regular expressions.
- * Expression are evaluated with the config panel form as context.
- *
- * @param {String} expression - A String to evaluate.
- * @param {Object} forms - A nested form used in config panels.
- * @return {Boolean} - expression evaluation result.
- */
-export function evaluateExpression(expression, form, nested = true) {
-  if (!expression) return true
-  if (expression === '"false"') return false
-
-  const context = nested
-    ? Object.values(form).reduce((merged, next) => ({ ...merged, ...next }))
-    : form
-
-  for (const key in context) {
-    if (isObjectLiteral(context[key]) && 'file' in context[key]) {
-      context[key] = context[key].content
-    }
-  }
-
-  // Allow to use match(var,regexp) function
-  const matchRe = /match(\s*(\w+)\s*,\s*"([^"]+)"\s*)/g
-  for (const matched of expression.matchAll(matchRe)) {
-    const [fullMatch, varMatch, regExpMatch] = matched
-    const varName = varMatch + '__re' + matched.index
-    context[varName] = new RegExp(regExpMatch, 'm').test(context[varMatch])
-    expression = expression.replace(fullMatch, varName)
-  }
-
-  try {
-    return !!evaluate(context, expression)
-  } catch {
-    return false
-  }
-}
-
-// Adds a property to an Object that will dynamically returns a expression evaluation result.
-function addEvaluationGetter(prop, obj, expr, ctx, nested) {
-  Object.defineProperty(obj, prop, {
-    get: () => evaluateExpression(expr, ctx, nested),
-  })
-}
-
-/**
- * Format app install, actions and config panel argument into a data structure that
- * will be automaticly transformed into a component on screen.
- *
- * @param {Object} arg - a yunohost arg options written by a packager.
- * @return {Object} an formated argument containing formItem props, validation and base value.
- */
-export function formatYunoHostArgument(arg) {
-  let value = arg.value !== undefined ? arg.value : null
-  let validation = {}
-  arg.ask = formatI18nField(arg.ask)
-  const field = {
-    is: arg.readonly ? 'FormFieldReadonly' : 'FormField',
-    visible: arg.visible,
-    props: {
-      label: arg.ask,
-      component: undefined,
-      props: {},
-    },
-  }
-
-  const defaultProps = ['id', 'placeholder:example']
-  const components = [
-    {
-      types: ['string', 'path'],
-      name: 'InputItem',
-      props: defaultProps.concat(['autocomplete', 'trim', 'choices']),
-    },
-    {
-      types: ['email', 'url', 'date', 'time', 'color'],
-      name: 'InputItem',
-      props: defaultProps.concat(['type', 'trim']),
-    },
-    {
-      types: ['password'],
-      name: 'InputItem',
-      props: defaultProps.concat(['type', 'autocomplete', 'trim']),
-      callback: function () {
-        if (!arg.help) {
-          arg.help = i18n.global.t('good_practices_about_admin_password')
-        }
-        arg.example = '••••••••••••'
-        validation.passwordLenght = validators.minLength(8)
-      },
-    },
-    {
-      types: ['number', 'range'],
-      name: 'InputItem',
-      props: defaultProps.concat(['type', 'min', 'max', 'step']),
-      callback: function () {
-        if (arg.min !== undefined) {
-          validation.minValue = validators.minValue(arg.min)
-        }
-        if (arg.max !== undefined) {
-          validation.maxValue = validators.maxValue(arg.max)
-        }
-        validation.numValue = validators.integer
-      },
-    },
-    {
-      types: ['select', 'user', 'domain', 'app', 'group'],
-      name: 'SelectItem',
-      props: ['id', 'choices'],
-      callback: function () {
-        if (arg.type !== 'select') {
-          field.props.link = {
-            name: arg.type + '-list',
-            text: i18n.global.t(`manage_${arg.type}s`),
-          }
-        }
-      },
-    },
-    {
-      types: ['file'],
-      name: 'FileItem',
-      props: defaultProps.concat(['accept']),
-      callback: function () {
-        value = {
-          // in case of already defined file, we receive only the file path (not the actual file)
-          file: value ? new File([''], value) : null,
-          content: '',
-          current: !!value,
-          removed: false,
-        }
-      },
-    },
-    {
-      types: ['text'],
-      name: 'TextAreaItem',
-      props: defaultProps,
-    },
-    {
-      types: ['tags'],
-      name: 'TagsItem',
-      props: defaultProps.concat([
-        'limit',
-        'placeholder',
-        'options:choices',
-        'tagIcon:icon',
-      ]),
-      callback: function () {
-        if (arg.choices && arg.choices.length) {
-          this.name = 'TagsSelectizeItem'
-          Object.assign(field.props.props, {
-            auto: true,
-            itemsName: '',
-            label: arg.placeholder,
-          })
-        }
-        if (typeof value === 'string' && value) {
-          value = value.split(',')
-        } else if (!value) {
-          value = []
-        }
-      },
-    },
-    {
-      types: ['boolean'],
-      name: 'CheckboxItem',
-      props: ['id', 'choices'],
-      callback: function () {
-        if (value !== null && value !== undefined) {
-          value = ['1', 'yes', 'y', 'true'].includes(
-            String(value).toLowerCase(),
-          )
-        } else if (arg.default !== null && arg.default !== undefined) {
-          value = ['1', 'yes', 'y', 'true'].includes(
-            String(arg.default).toLowerCase(),
-          )
-        }
-      },
-    },
-    {
-      types: ['alert'],
-      name: 'ReadOnlyAlertItem',
-      props: ['type:style', 'label:ask', 'icon'],
-      renderSelf: true,
-    },
-    {
-      types: ['markdown'],
-      name: 'MarkdownItem',
-      props: ['label:ask'],
-      renderSelf: true,
-    },
-    {
-      types: ['display_text'],
-      name: 'DisplayTextItem',
-      props: ['label:ask'],
-      renderSelf: true,
-    },
-    {
-      types: ['button'],
-      name: 'ButtonItem',
-      props: ['type:style', 'label:ask', 'icon', 'enabled'],
-      renderSelf: true,
-    },
-  ]
-
-  // Default type management if no one is filled
-  if (arg.type !== 'tags' && arg.choices && arg.choices.length) {
-    arg.type = 'select'
-  }
-  if (arg.type === undefined) {
-    if (arg.choices && arg.choices.length) {
-      arg.type = 'select'
-    } else {
-      arg.type = 'string'
-    }
-  }
-
-  // Search the component bind to the type
-  const component = components.find((element) =>
-    element.types.includes(arg.type),
-  )
-  if (component === undefined) throw new TypeError('Unknown type: ' + arg.type)
-
-  // Callback use for specific behaviour
-  if (component.callback) component.callback()
-  field.props.component = component.name
-  // Affect properties to the field Item
-  for (let prop of component.props) {
-    prop = prop.split(':')
-    const propName = prop[0]
-    const argName = prop.slice(-1)[0]
-
-    if (argName in arg) {
-      if (propName === 'choices') {
-        field.props.props[propName] = Object.entries(arg[argName]).map(
-          ([value, text]) => ({ value, text }),
-        )
-      } else {
-        field.props.props[propName] = arg[argName]
-      }
-    }
-  }
-
-  // Required (no need for checkbox its value can't be null)
-  if (
-    !component.renderSelf &&
-    arg.type !== 'boolean' &&
-    arg.optional !== true
-  ) {
-    validation.required = validators.required
-  }
-  if (arg.pattern && arg.type !== 'tags') {
-    validation.pattern = validators.helpers.withMessage(
-      formatI18nField(arg.pattern.error),
-      validators.helpers.regex(new RegExp(arg.pattern.regexp)),
-    )
-  }
-
-  // Default value if still `null`
-  if (value === null && arg.default) {
-    value = arg.default
-  }
-
-  // Help message
-  if (arg.help) {
-    field.props.description = formatI18nField(arg.help)
-  }
-
-  // Help message
-  if (arg.helpLink) {
-    field.props.link = {
-      href: arg.helpLink.href,
-      text: i18n.global.t(arg.helpLink.text),
-    }
-  }
-
-  if (component.renderSelf) {
-    field.is = field.props.component
-    field.props = field.props.props
-  }
-
-  return {
-    value,
-    field,
-    // Return null instead of empty object if there's no validation
-    validation: Object.keys(validation).length === 0 ? null : validation,
-  }
-}
-
-/**
- * Format app install, actions and config panel manifest args into a form that can be used
- * as v-model values, fields that can be passed to a FormField component and validations.
- *
- * @param {Array} args - a yunohost arg array written by a packager.
- * @param {Object|null} forms - nested form used as the expression evualuations context.
- * @return {Object} an object containing all parsed values to be used in vue views.
- */
-export function formatYunoHostArguments(args, forms) {
-  const form = {}
-  const fields = {}
-  const validations = {}
-
-  for (const arg of args) {
-    const { value, field, validation } = formatYunoHostArgument(arg)
-    fields[arg.id] = field
-    form[arg.id] = value
-    if (validation) validations[arg.id] = validation
-
-    if ('visible' in arg && typeof arg.visible === 'string') {
-      addEvaluationGetter(
-        'visible',
-        field,
-        arg.visible,
-        forms || form,
-        forms !== undefined,
-      )
-    }
-
-    if ('enabled' in arg && typeof arg.enabled === 'string') {
-      addEvaluationGetter(
-        'enabled',
-        field.props,
-        arg.enabled,
-        forms || form,
-        forms !== undefined,
-      )
-    }
-  }
-
-  return { form, fields, validations }
-}
-
-export function formatYunoHostConfigPanels(data) {
-  const result = {
-    panels: [],
-    forms: {},
-    validations: {},
-  }
-
-  for (const { id: panelId, name, help, sections } of data.panels) {
-    const panel = {
-      id: panelId,
-      sections: [],
-      serverError: '',
-      hasApplyButton: false,
-    }
-    result.forms[panelId] = {}
-    result.validations[panelId] = {}
-
-    if (name) panel.name = formatI18nField(name)
-    if (help) panel.help = formatI18nField(help)
-
-    for (const _section of sections) {
-      const section = {
-        id: _section.id,
-        isActionSection: _section.is_action_section,
-        visible: _section.visible,
-      }
-      if (_section.help) section.help = formatI18nField(_section.help)
-      if (_section.name) section.name = formatI18nField(_section.name)
-      if (typeof _section.visible === 'string') {
-        addEvaluationGetter('visible', section, section.visible, result.forms)
-      }
-
-      const { form, fields, validations } = formatYunoHostArguments(
-        _section.options,
-        result.forms,
-      )
-      // Merge all sections forms to the panel to get a unique form
-      Object.assign(result.forms[panelId], form)
-      Object.assign(result.validations[panelId], validations)
-      section.fields = fields
-      panel.sections.push(section)
-
-      if (
-        !section.isActionSection &&
-        Object.values(fields).some(
-          (field) => !NO_VALUE_FIELDS.includes(field.is),
-        )
-      ) {
-        panel.hasApplyButton = true
-      }
-    }
-
-    result.panels.push(panel)
-  }
-
-  return result
-}
-
 /**
  * Parse a front-end value to its API equivalent. This function returns a Promise or an
  * Object `{ key: Promise }` if `key` is supplied. When parsing a form, all those
diff --git a/app/src/types/commons.ts b/app/src/types/commons.ts
index 18145a1b..e464d3b6 100644
--- a/app/src/types/commons.ts
+++ b/app/src/types/commons.ts
@@ -32,3 +32,10 @@ export type ArrInnerType<T> = T extends (infer ElementType)[]
   ? ElementType
   : never
 export type KeyOfStr<T extends Obj> = Extract<keyof T, string>
+export type MergeUnion<U extends Record<string, unknown>> = {
+  [K in U extends unknown ? keyof U : never]: U extends unknown
+    ? K extends keyof U
+      ? U[K]
+      : never
+    : never
+}
diff --git a/app/src/types/configPanels.ts b/app/src/types/configPanels.ts
new file mode 100644
index 00000000..aa9e6902
--- /dev/null
+++ b/app/src/types/configPanels.ts
@@ -0,0 +1,80 @@
+import type { Ref } from 'vue'
+
+import type { Obj, KeyOfStr, CustomRoute } from '@/types/commons'
+import type {
+  FormField,
+  FormFieldReadonly,
+  FormFieldDisplay,
+  FormFieldDict,
+} from '@/types/form'
+import type {
+  AnyOptionType,
+  AnyOption,
+  OptionTypeToOptionResolver,
+} from '@/types/core/options'
+
+export const OPTION_COMPONENT_RESOLVER = {
+  display_text: 'DisplayTextItem',
+  markdown: 'MarkdownItem',
+  alert: 'ReadOnlyAlertItem',
+  button: 'ButtonItem',
+  string: 'InputItem',
+  text: 'TextAreaItem',
+  password: 'InputItem',
+  color: 'InputItem',
+  number: 'InputItem',
+  range: 'InputItem',
+  boolean: 'CheckboxItem',
+  date: 'InputItem',
+  time: 'InputItem',
+  email: 'InputItem',
+  path: 'InputItem',
+  url: 'InputItem',
+  file: 'FileItem',
+  select: 'SelectItem',
+  tags: 'TagsItem',
+  'tags-select': 'TagsSelectizeItem',
+  domain: 'SelectItem',
+  app: 'SelectItem',
+  user: 'SelectItem',
+  group: 'SelectItem',
+} as const
+
+export function isIn<T extends AnyOptionType, U extends AnyOption>(
+  coll: ReadonlyArray<T>,
+  el: U,
+): el is U & OptionTypeToOptionResolver[T] {
+  return coll.includes(el.type as T)
+}
+
+// FIXME move to types/form.ts?
+export type AnyFormField = FormField | FormFieldReadonly | FormFieldDisplay
+
+export type ConfigSection<MV extends Obj, FFD extends FormFieldDict<MV>> = {
+  help: string
+  fields: KeyOfStr<FFD>[]
+  id: string
+  isActionSection: boolean
+  name?: string
+  visible: boolean
+}
+
+export type ConfigPanel<
+  NestedMV extends Obj,
+  MV extends Obj<NestedMV>,
+  FFD extends FormFieldDict<NestedMV> = FormFieldDict<NestedMV>,
+> = {
+  fields: FFD
+  help: string
+  hasApplyButton: boolean
+  id: KeyOfStr<MV>
+  icon?: string
+  name: string
+  sections?: ConfigSection<NestedMV, FFD>[]
+}
+
+export type ConfigPanels<NestedMV extends Obj, MV extends Obj<NestedMV>> = {
+  forms: Record<keyof MV, Ref<NestedMV>>
+  panels: ConfigPanel<NestedMV, MV>[]
+  routes: CustomRoute[]
+}
diff --git a/app/src/types/core/options.ts b/app/src/types/core/options.ts
index 78008b60..fc5ab4f6 100644
--- a/app/src/types/core/options.ts
+++ b/app/src/types/core/options.ts
@@ -8,7 +8,7 @@ type Pattern = {
 
 // CONFIG PANELS
 
-export type CoreConfigPanels<MV extends Obj<Obj>> = {
+export type CoreConfigPanels<MV extends Obj<Obj> = Obj<Obj>> = {
   panels: CoreConfigPanel<MV>[]
 }
 
@@ -17,7 +17,7 @@ export type CoreConfigPanel<MV extends Obj> = {
   icon?: string
   id: KeyOfStr<MV>
   name?: Translation
-  sections: CoreConfigSection[]
+  sections?: CoreConfigSection[]
 }
 
 export type CoreConfigSection = {
diff --git a/app/src/types/form.ts b/app/src/types/form.ts
index 28d94a5e..50dba32b 100644
--- a/app/src/types/form.ts
+++ b/app/src/types/form.ts
@@ -5,6 +5,7 @@ import type {
 } from '@vuelidate/core'
 import type { RouteLocationRaw } from 'vue-router'
 
+import { isObjectLiteral } from '@/helpers/commons'
 import type { ArrInnerType, Cols, Obj, StateVariant } from '@/types/commons'
 
 type StateValidation = false | null
@@ -129,6 +130,21 @@ export type TextAreaItemProps = BaseWritableItemProps & {
   // type?: string // FIXME unused?
 }
 
+export type AnyDisplayItemProps =
+  | ButtonItemProps
+  | DisplayTextItemProps
+  | MarkdownItemProps
+  | ReadOnlyAlertItemProps
+export type AnyWritableItemProps =
+  | AdressItemProps
+  | CheckboxItemProps
+  | FileItemProps
+  | InputItemProps
+  | SelectItemProps
+  | TagsItemProps
+  | TagsSelectizeItemProps
+  | TextAreaItemProps
+
 // FIELDS
 
 const ANY_WRITABLE_COMPONENTS = [
@@ -178,6 +194,16 @@ export function isDisplayComponent(
   )
 }
 
+export function isNonWritableComponent(
+  field:
+    | FormField<AnyWritableComponents>
+    | FormField
+    | FormFieldReadonly
+    | FormFieldDisplay,
+): field is FormFieldDisplay | FormFieldReadonly {
+  return isDisplayComponent(field) || !!field.readonly
+}
+
 type ItemComponentToItemProps = {
   // DISPLAY
   ButtonItem: ButtonItemProps
@@ -235,7 +261,7 @@ export type FormField<
   readonly?: false
 }
 
-type FormFieldReadonly<
+export type FormFieldReadonly<
   C extends AnyWritableComponents = AnyWritableComponents,
 > = BaseFormField<C> & {
   label: string
@@ -243,7 +269,9 @@ type FormFieldReadonly<
   readonly: true
 }
 
-type FormFieldDisplay<C extends AnyDisplayComponents = AnyDisplayComponents> = {
+export type FormFieldDisplay<
+  C extends AnyDisplayComponents = AnyDisplayComponents,
+> = {
   component: C
   props: ItemComponentToItemProps[C]
   visible?: boolean
@@ -275,6 +303,7 @@ export type FormFieldDict<T extends Obj = Obj> = {
         | FormFieldDisplay<AnyDisplayComponents>
 }
 
+// Type to check if object satisfies specified Field and Item
 export type FieldProps<
   C extends AnyItemComponents = 'InputItem',
   MV extends any = never,
@@ -283,3 +312,11 @@ export type FieldProps<
   : C extends AnyDisplayComponents
     ? FormFieldDisplay<C>
     : never
+
+export function isFileModelValue(value: any): value is FileModelValue {
+  return isObjectLiteral(value) && 'file' in value
+}
+
+export function isAdressModelValue(value: any): value is AdressModelValue {
+  return isObjectLiteral(value) && 'separator' in value
+}