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/i18n/locales/en-US.ts

@@ -5,6 +5,7 @@ const enUS = {
     installedPlugins: 'Installed Plugins',
     pluginMarket: 'Marketplace',
     mcpServers: 'MCP Servers',
+    quickStart: 'Quick Start',
   },
   common: {
     login: 'Login',
@@ -321,6 +322,7 @@ const enUS = {
     viewDetails: 'Details',
     collapse: 'Collapse',
     imagesAttached: 'image(s) attached',
+    noLogs: 'No logs yet',
     sessionMonitor: {
       title: 'Sessions',
       sessions: 'Sessions',
@@ -1109,6 +1111,68 @@ const enUS = {
     maxExtensionsReached:
       'Maximum number of extensions ({{max}}) reached. Please remove an existing MCP server or plugin before adding a new one.',
   },
+  wizard: {
+    sidebarDescription: 'Create a bot with guided steps',
+    loading: 'Loading wizard...',
+    loadError: 'Failed to load wizard data',
+    skip: 'Skip',
+    skipConfirmMessage:
+      'You can re-enter the Quick Start wizard from the sidebar later, or create a bot manually.',
+    skipConfirmOk: 'OK',
+    prev: 'Previous',
+    next: 'Next',
+    finish: 'Create & Deploy',
+    confirmCreateBot: 'Confirm, Create Bot',
+    createSuccess: 'Pipeline created and linked to bot successfully!',
+    botCreateSuccess: 'Bot created successfully!',
+    botSaveSuccess: 'Bot configuration saved and enabled!',
+    createError: 'Failed to create resources',
+    spaceAuthError: 'Failed to initiate Space authorization',
+    step: {
+      platform: 'Platform',
+      botConfig: 'Bot Setup',
+      aiEngine: 'AI Engine',
+      done: 'Done',
+    },
+    platform: {
+      title: 'Select a Platform',
+      description: 'Choose the messaging platform your bot will connect to.',
+    },
+    botConfig: {
+      title: 'Configure Your Bot',
+      description: 'Set up your bot and verify it works before continuing.',
+      saveBot: 'Save & Enable Bot',
+      resaveBot: 'Re-save Configuration',
+      botSaved:
+        'Bot configuration saved and enabled. Check the logs to verify the connection.',
+      logsTitle: 'Bot Logs',
+      logsDescription:
+        'Monitor bot activity to verify the platform connection is working.',
+    },
+    aiEngine: {
+      title: 'Select an AI Engine',
+      description:
+        "Choose the AI engine that will power your bot's intelligence.",
+    },
+    spaceBanner: {
+      message:
+        'Connect to LangBot Space for free trial model credits and zero-config instant setup!',
+      action: 'Authorize with Space',
+    },
+    config: {
+      botInfo: 'Bot Information',
+      botNamePlaceholder: 'Enter bot name',
+      botDescPlaceholder: 'Enter bot description (optional)',
+      platformConfig: '{{platform}} Configuration',
+      aiConfig: '{{engine}} Configuration',
+    },
+    done: {
+      title: 'All Set!',
+      description:
+        'Your bot has been created and connected to the AI pipeline. You can now manage it from the workbench.',
+      backToWorkbench: 'Back to Workbench',
+    },
+  },
 };
 
 export default enUS;