Feat/onboarding wizard (#2086)

* feat(web): add onboarding wizard for guided bot creation

Implement a full-screen 4-step wizard at /wizard that guides users
through selecting a platform, configuring a bot, choosing an AI engine,
and completing setup. The wizard uses DynamicFormComponent for adapter
and pipeline configuration, embeds BotLogListComponent for real-time
debugging, persists state to localStorage, and integrates with Space
OAuth flow. Also fixes a prompt-editor crash in DynamicFormComponent
when value is undefined.

* feat(wizard): redesign step 0/1 flow, add skip dialog, auto-expand log images

- Step 0: Remove bot name/description fields; auto-derive name from adapter
  label; create disabled bot on confirm; advance to Step 1 automatically
- Step 1: Replace 'Create Bot' with 'Save & Enable Bot'; update adapter
  config and enable bot; disable form fields after saving
- Add skip confirmation AlertDialog with i18n message
- Add LanguageSelector to wizard header
- Move wizard sidebar entry to last position to prevent fallback redirect loop
- Add defaultExpanded prop to BotLogCard; auto-expand entries with images
  in wizard via autoExpandImages prop on BotLogListComponent
- Remove automatic default pipeline creation (write_default_pipeline) from
  backend persistence manager since the wizard now handles pipeline creation
- Update all 4 locale files (en-US, zh-Hans, zh-Hant, ja-JP)

* fix(wizard): hide detailed logs link in wizard, allow re-editing bot config after save

- Add hideDetailedLogsLink prop to BotLogListComponent; pass it in wizard
- Remove isEditing on DynamicFormComponent so form stays editable after save
- Always show save button; label changes to 'Re-save' after first save
- Add resaveBot i18n key to all 4 locale files

* style(wizard): move save button into config card header

* fix(wizard): initialize userInfo/systemInfo so model selector works

The wizard runs outside /home layout, so userInfo was null. This caused
the model-fallback-selector to filter out all Space models, showing an
empty dropdown. Fix by calling initializeUserInfo() and
initializeSystemInfo() before fetching wizard data.

Also:
- Hide log toolbar in wizard via hideToolbar prop on BotLogListComponent
- Add empty state message for bot logs (noLogs i18n key, all 4 locales)

* feat(wizard): redesign AI Engine step with left-right split layout

Before selecting a runner: centered grid of runner cards.
After selecting: left panel shows compact runner list for switching,
right panel shows runner config form with slide-in animations.

Also fix prompt field default: add default value to prompt-editor field
in ai.yaml metadata so the prompt is pre-populated with
'You are a helpful assistant.' instead of being empty.

* feat(pipeline): add default values to ai.yaml runner configs and show_if for n8n auth fields

- Sync default values from default-pipeline-config.json to all runner
  config fields in ai.yaml so wizard forms are pre-populated
- Add show_if conditions to n8n-service-api auth fields so only the
  relevant credentials appear based on selected auth-type
- Fix prompt-editor crash in DynamicFormItemComponent when field.value
  is undefined (Array.isArray guard + fallback)
- Improve wizard Step 2 split layout with fixed column widths,
  independent scroll, ring clipping fix, and mobile responsiveness
- Use key={selected} on DynamicFormComponent to force remount on
  runner switch
- Improve pipeline creation flow: create → fetch defaults → merge AI
  section → update (preserves trigger/safety/output defaults)

* feat(dynamic-form): add systemContext prop with __system.* namespace for show_if conditions

- Add systemContext prop to DynamicFormComponent for injecting external
  variables accessible via __system.* prefix in show_if conditions
- Extract resolveShowIfValue() helper for cleaner field resolution
- Pass { is_wizard: true } from wizard to hide knowledge-bases field
- Remove bot config save toast in wizard (keep inline indicator)

* feat(sidebar): render wizard as standalone item before Home group with fallback redirect fix

* fix(wizard): remove unused setBotDescription to fix lint error

web/src/app/home/components/dynamic-form/DynamicFormComponent.tsx

@@ -16,6 +16,30 @@ import { extractI18nObject } from '@/i18n/I18nProvider';
 import { useTranslation } from 'react-i18next';
 import { cn } from '@/lib/utils';
 
+/**
+ * Resolve the value referenced by a `show_if.field` string.
+ *
+ * Fields prefixed with `__system.` are looked up in the caller-supplied
+ * `systemContext` dictionary (e.g. `__system.is_wizard` → `systemContext.is_wizard`).
+ * All other field names are resolved from the live form values first, then
+ * fall back to `externalDependentValues`.
+ */
+function resolveShowIfValue(
+  field: string,
+  watchedValues: Record<string, unknown>,
+  externalDependentValues?: Record<string, unknown>,
+  systemContext?: Record<string, unknown>,
+): unknown {
+  if (field.startsWith('__system.')) {
+    const key = field.slice('__system.'.length);
+    return systemContext?.[key];
+  }
+  if (watchedValues[field] !== undefined) {
+    return watchedValues[field];
+  }
+  return externalDependentValues?.[field];
+}
+
 export default function DynamicFormComponent({
   itemConfigList,
   onSubmit,
@@ -23,6 +47,7 @@ export default function DynamicFormComponent({
   onFileUploaded,
   isEditing,
   externalDependentValues,
+  systemContext,
 }: {
   itemConfigList: IDynamicFormItemSchema[];
   onSubmit?: (val: object) => unknown;
@@ -30,6 +55,9 @@ export default function DynamicFormComponent({
   onFileUploaded?: (fileKey: string) => void;
   isEditing?: boolean;
   externalDependentValues?: Record<string, unknown>;
+  /** Extra variables accessible via the `__system.*` namespace in show_if conditions.
+   *  e.g. `{ is_wizard: true }` makes `show_if: { field: "__system.is_wizard", ... }` work. */
+  systemContext?: Record<string, unknown>;
 }) {
   const isInitialMount = useRef(true);
   const previousInitialValues = useRef(initialValues);
@@ -61,6 +89,13 @@ export default function DynamicFormComponent({
         fallbacks: [],
       };
     }
+    if (item.type === 'prompt-editor') {
+      if (Array.isArray(value)) {
+        return value;
+      }
+      // Default to a single empty system prompt entry
+      return [{ role: 'system', content: '' }];
+    }
     return value;
   };
 
@@ -241,14 +276,12 @@ export default function DynamicFormComponent({
       <div className="space-y-4">
         {itemConfigList.map((config) => {
           if (config.show_if) {
-            const dependValue =
-              watchedValues[
-                config.show_if.field as keyof typeof watchedValues
-              ] !== undefined
-                ? watchedValues[
-                    config.show_if.field as keyof typeof watchedValues
-                  ]
-                : externalDependentValues?.[config.show_if.field];
+            const dependValue = resolveShowIfValue(
+              config.show_if.field,
+              watchedValues as Record<string, unknown>,
+              externalDependentValues,
+              systemContext,
+            );
 
             if (
               config.show_if.operator === 'eq' &&