feat(desktop): quick-ask panel with prompt picker and paste-back

[CREDO23]

Summary

• Add quick-ask floating panel triggered by Cmd+Option+S — captures clipboard, shows prompt picker, sends to chat, and pastes back transformed text
• Add custom prompts CRUD (backend model + migration + API routes + settings UI)
• Add / prompt picker in the chat composer for all users (web + desktop)

Test plan

• Trigger quick-ask shortcut with text in clipboard
• Select a prompt from the picker — verify it sends and pastes back
• Dismiss clipboard chip — verify composer returns to normal
• Use / in composer on web — verify prompt picker works
• Create, edit, delete custom prompts in settings

High-level PR Summary

This PR introduces a quick-ask desktop feature triggered by Cmd+Option+S that captures clipboard text, displays a prompt picker, sends the transformed text to chat, and optionally pastes it back. It also adds a full CRUD system for custom prompts (backend database migration, API routes, and settings UI) and implements a / prompt picker in the chat composer for both web and desktop users. The feature enables users to quickly transform or explore text using predefined or custom prompt templates.

⏱️ Estimated Review Time: 30-90 minutes

💡 Review Order Suggestion

Order	File Path
1	surfsense_backend/alembic/versions/109_add_prompts_table.py
2	surfsense_backend/app/db.py
3	surfsense_backend/app/schemas/prompts.py
4	surfsense_backend/app/routes/prompts_routes.py
5	surfsense_backend/app/routes/__init__.py
6	surfsense_web/contracts/types/prompts.types.ts
7	surfsense_web/lib/apis/prompts-api.service.ts
8	surfsense_web/app/dashboard/[search_space_id]/user-settings/components/PromptsContent.tsx
9	surfsense_web/components/settings/user-settings-dialog.tsx
10	surfsense_web/components/new-chat/prompt-picker.tsx
11	surfsense_web/components/assistant-ui/inline-mention-editor.tsx
12	surfsense_web/components/assistant-ui/thread.tsx
13	surfsense_web/components/assistant-ui/assistant-message.tsx
14	surfsense_desktop/src/ipc/channels.ts
15	surfsense_desktop/src/modules/platform.ts
16	surfsense_desktop/src/modules/quick-ask.ts
17	surfsense_desktop/src/preload.ts
18	surfsense_web/types/window.d.ts
19	surfsense_web/app/dashboard/page.tsx
20	surfsense_web/app/dashboard/[search_space_id]/new-chat/[[...chat_id]]/page.tsx

[vercel]

@CREDO23 is attempting to deploy a commit to the Rohan Verma's projects Team on Vercel.

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[recurseml]

Review by RecurseML

🔍 Review performed on cae4262..b8a1d1f

✨ No bugs found, your code is sparkling clean

✅ Files analyzed, no issues (20)

• surfsense_backend/alembic/versions/109_add_prompts_table.py
• surfsense_backend/app/db.py
• surfsense_backend/app/routes/__init__.py
• surfsense_backend/app/routes/prompts_routes.py
• surfsense_backend/app/schemas/prompts.py
• surfsense_desktop/src/ipc/channels.ts
• surfsense_desktop/src/modules/platform.ts
• surfsense_desktop/src/modules/quick-ask.ts
• surfsense_desktop/src/preload.ts
• surfsense_web/app/dashboard/[search_space_id]/new-chat/[[...chat_id]]/page.tsx
• surfsense_web/app/dashboard/[search_space_id]/user-settings/components/PromptsContent.tsx
• surfsense_web/app/dashboard/page.tsx
• surfsense_web/components/assistant-ui/assistant-message.tsx
• surfsense_web/components/assistant-ui/inline-mention-editor.tsx
• surfsense_web/components/assistant-ui/thread.tsx
• surfsense_web/components/new-chat/prompt-picker.tsx
• surfsense_web/components/settings/user-settings-dialog.tsx
• surfsense_web/contracts/types/prompts.types.ts
• surfsense_web/lib/apis/prompts-api.service.ts
• surfsense_web/types/window.d.ts

[MODSetter]

@CREDO23 It should be no 111