feat: Slate & Ice Modern aesthetic redesign (#94)

* chore: update Google Fonts to Bricolage Grotesque, IBM Plex Sans, JetBrains Mono

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

* chore: update Tailwind config to Slate & Ice theme colors and fonts

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

* feat: update CSS variables and glass-card utilities for Slate & Ice theme

- Replace all color variables with Slate & Ice palette
- Add glass system vars (--glass-bg, --glass-blur, --shadow-float)
- Replace legacy glass-card with new variable-driven glass classes
- Add breatheGlow, bellWobble, slideDown, fadeInRight keyframes
- Update font references to IBM Plex Sans and Bricolage Grotesque

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

* feat: recolor BrandLogo to cyan gradient, split BrandWordmark for gradient Flow text

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

* feat: update TopBar with glassmorphism backdrop and cyan accent styling

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

* feat: update Sidebar with glassmorphism backdrop

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

* feat: add ambient atmosphere gradient orbs behind app shell

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

* feat: update QuickStats and SessionsPanel with glass-card styling

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

* feat: add WeeklyCalendar, QuickActions, OpenSessions, RecentActivity dashboard components

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

* feat: redesign dashboard layout with calendar, open sessions, and glass-card panels

New layout: greeting → calendar+actions → sessions+stats → activity
Replaces old QuickStats and SessionsPanel with new dashboard components

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

* fix: replace remaining purple hex references with ice-cyan accent

Sweep of hardcoded purple hex values (#818cf8, #6366f1) replaced with
new cyan accent (#06b6d4) in QuickActions, RecentActivity, QuickLaunch,
and SVG brand assets.

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

* docs: update CLAUDE.md branding and design system for Slate & Ice Modern

Updated Last Updated date, branding section (fonts, colors, glass
utilities, atmosphere orbs), component styling rules, and Design System
section to reflect the new ice-cyan glassmorphism theme.

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

* docs: add Slate & Ice Modern design doc and implementation plan

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

* feat: redesign login page with Slate & Ice Modern design system

Apply glassmorphism styling, atmosphere orbs, branded wordmark, and
consistent design tokens to match the updated app shell aesthetic.

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

* fix: raise TopBar z-index so profile dropdown renders above main content

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

* feat: add AI assistant with in-session copilot and standalone chat with RAG

Implements three-phase AI assistant feature:
- Phase 0: RAG infrastructure with pgvector embeddings, Voyage AI integration,
  tree chunking service, and semantic search over team's flow library
- Phase 1: In-session copilot panel during flow navigation with contextual
  AI help, current step awareness, and suggested related flows
- Phase 2: Standalone AI chat page with persistent conversation history,
  pin/delete, and configurable retention policies (account-level)

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

* feat: add account management, email verification, AI fixes, and user guides

- Profile settings, account transfer, delete/leave account flows
- Email verification with JWT tokens and Resend integration
- AI assistant/copilot fixes: markdown rendering, shared RAG helpers,
  token tracking, input refocus, model_validate usage
- User guides hub + detail pages with 13 topic guides
- Sidebar and top bar navigation for guides

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

* fix: prevent stale chunk errors after deployments

- Set Cache-Control no-cache on index.html in nginx so browsers always
  fetch fresh chunk references after a deploy
- Auto-reload on chunk load failures (stale deploy detection) with
  loop prevention via sessionStorage
- Show friendly "App Updated" message if auto-reload doesn't resolve it

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

* feat: add email verification toggle to admin settings

Adds platform-level toggle to enable/disable email verification.
When disabled, the verification banner is hidden and the send
endpoint returns 403.

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

---------

Co-authored-by: Claude Opus 4.6 <noreply@anthropic.com>

frontend/src/api/accounts.ts

@@ -48,6 +48,22 @@ export const accountsApi = {
     const response = await apiClient.post<AccountInvite>(`/accounts/me/invites/${inviteId}/resend`)
     return response.data
   },
+
+  async transferOwnership(currentPassword: string, targetUserId: string): Promise<Account> {
+    const response = await apiClient.post<Account>('/accounts/me/transfer-ownership', {
+      current_password: currentPassword,
+      target_user_id: targetUserId,
+    })
+    return response.data
+  },
+
+  async leaveAccount(): Promise<void> {
+    await apiClient.post('/accounts/me/leave')
+  },
+
+  async deleteAccount(currentPassword: string): Promise<void> {
+    await apiClient.delete('/accounts/me', { data: { current_password: currentPassword } })
+  },
 }
 
 export default accountsApi

frontend/src/api/assistantChat.ts

@@ -0,0 +1,59 @@
+import apiClient from './client'
+import type {
+  AssistantChat,
+  ChatListItem,
+  ChatMessageResponse,
+  RetentionSettings,
+} from '@/types/assistant-chat'
+
+export const assistantChatApi = {
+  async createChat(): Promise<AssistantChat> {
+    const response = await apiClient.post<AssistantChat>('/assistant/chats', {})
+    return response.data
+  },
+
+  async listChats(page = 1, size = 20): Promise<ChatListItem[]> {
+    const response = await apiClient.get<ChatListItem[]>('/assistant/chats', {
+      params: { page, size },
+    })
+    return response.data
+  },
+
+  async getChat(chatId: string): Promise<AssistantChat> {
+    const response = await apiClient.get<AssistantChat>(`/assistant/chats/${chatId}`)
+    return response.data
+  },
+
+  async sendMessage(chatId: string, message: string): Promise<ChatMessageResponse> {
+    const response = await apiClient.post<ChatMessageResponse>(
+      `/assistant/chats/${chatId}/messages`,
+      { message }
+    )
+    return response.data
+  },
+
+  async updateChat(chatId: string, data: { title?: string; pinned?: boolean }): Promise<AssistantChat> {
+    const response = await apiClient.patch<AssistantChat>(`/assistant/chats/${chatId}`, data)
+    return response.data
+  },
+
+  async deleteChat(chatId: string): Promise<void> {
+    await apiClient.delete(`/assistant/chats/${chatId}`)
+  },
+
+  async bulkDeleteChats(olderThanDays: number): Promise<void> {
+    await apiClient.delete('/assistant/chats', { params: { older_than_days: olderThanDays } })
+  },
+
+  async getRetentionSettings(): Promise<RetentionSettings> {
+    const response = await apiClient.get<RetentionSettings>('/assistant/retention')
+    return response.data
+  },
+
+  async updateRetentionSettings(data: Partial<RetentionSettings>): Promise<RetentionSettings> {
+    const response = await apiClient.patch<RetentionSettings>('/assistant/retention', data)
+    return response.data
+  },
+}
+
+export default assistantChatApi

frontend/src/api/auth.ts

@@ -1,5 +1,5 @@
 import apiClient from './client'
-import type { Token, User, UserCreate, UserLogin } from '@/types'
+import type { Token, User, UserCreate, UserLogin, UserUpdate } from '@/types'
 
 export const authApi = {
   async register(data: UserCreate): Promise<User> {
@@ -53,6 +53,24 @@ export const authApi = {
       new_password: newPassword,
     })
   },
+
+  async updateProfile(data: UserUpdate): Promise<User> {
+    const response = await apiClient.patch<User>('/auth/me', data)
+    return response.data
+  },
+
+  async getVerificationStatus(): Promise<{ enabled: boolean }> {
+    const response = await apiClient.get<{ enabled: boolean }>('/auth/email/verification-status')
+    return response.data
+  },
+
+  async sendVerificationEmail(): Promise<void> {
+    await apiClient.post('/auth/email/send-verification')
+  },
+
+  async verifyEmail(token: string): Promise<void> {
+    await apiClient.post('/auth/email/verify', { token })
+  },
 }
 
 export default authApi

frontend/src/api/copilot.ts

@@ -0,0 +1,30 @@
+import apiClient from './client'
+import type {
+  CopilotStartRequest,
+  CopilotStartResponse,
+  CopilotMessageRequest,
+  CopilotMessageResponse,
+  CopilotConversation,
+} from '@/types/copilot'
+
+export const copilotApi = {
+  async startConversation(data: CopilotStartRequest): Promise<CopilotStartResponse> {
+    const response = await apiClient.post<CopilotStartResponse>('/copilot/conversations', data)
+    return response.data
+  },
+
+  async sendMessage(conversationId: string, data: CopilotMessageRequest): Promise<CopilotMessageResponse> {
+    const response = await apiClient.post<CopilotMessageResponse>(
+      `/copilot/conversations/${conversationId}/messages`,
+      data
+    )
+    return response.data
+  },
+
+  async getConversation(conversationId: string): Promise<CopilotConversation> {
+    const response = await apiClient.get<CopilotConversation>(`/copilot/conversations/${conversationId}`)
+    return response.data
+  },
+}
+
+export default copilotApi

frontend/src/api/index.ts

@@ -18,3 +18,5 @@ export { maintenanceSchedulesApi, batchLaunchApi } from './maintenanceSchedules'
 export { default as feedbackApi } from './feedback'
 export { default as aiBuilderApi } from './aiBuilder'
 export { default as aiChatApi } from './aiChat'
+export { copilotApi } from './copilot'
+export { assistantChatApi } from './assistantChat'