feat(ai): add browsing context and fix tool loading (#16476)

## Summary

- Add `BrowsingContext` type to automatically pass what the user is
currently viewing (recordPage or listView) to the AI chat
- Simplify context architecture: remove toggleable context UI, make it
automatic and invisible to the user
- Fix tool loading: add `unionOf` handling in
`getDatabaseToolsForObject` and fix regex ordering so `find_one_*` tools
are properly registered
- Use plural names for find tools (`find_people` vs `find_one_person`)
for better semantics
- Clean up unused components and states

## Changes

### Frontend
- New `BrowsingContext` type and `useGetBrowsingContext` hook to gather
context from Recoil state
- Simplified `useAgentChat` to use the new browsing context
- Removed toggleable context UI components
(`AgentChatContextRecordPreview`, `SendMessageWithRecordsContextButton`,
etc.)
- Removed `isAgentChatCurrentContextActiveState`

### Backend
- New `BrowsingContextType` for recordPage and listView contexts
- Updated `ChatExecutionService` to build context from browsing context
- Fixed `tool-registry.service.ts`:
  - Added `unionOf` handling in permission config
- Fixed regex ordering (`find_one` before `find`) so tools load
correctly
- Use plural names for search tools (`find_people` instead of
`find_person`)

## Test plan

- [x] Typecheck passes
- [x] Lint passes
- [ ] Test AI chat on record page - should show context in system prompt
- [ ] Test AI chat on list view - should show view name and filters
- [ ] Test `find_one_*` tools now load correctly
- [ ] Test `find_*` tools use plural naming

packages/twenty-front/src/modules/ai/components/internal/SendMessageButton.tsx

@@ -1,18 +1,13 @@
 import { AI_CHAT_INPUT_ID } from '@/ai/constants/AiChatInputId';
 import { useAgentChatContextOrThrow } from '@/ai/hooks/useAgentChatContextOrThrow';
 import { agentChatInputState } from '@/ai/states/agentChatInputState';
-import { type ObjectRecord } from '@/object-record/types/ObjectRecord';
 import { useHotkeysOnFocusedElement } from '@/ui/utilities/hotkey/hooks/useHotkeysOnFocusedElement';
 import { t } from '@lingui/core/macro';
 import { useRecoilValue } from 'recoil';
 import { Key } from 'ts-key-enum';
 import { Button } from 'twenty-ui/input';
 
-export const SendMessageButton = ({
-  records,
-}: {
-  records?: ObjectRecord[];
-}) => {
+export const SendMessageButton = () => {
   const agentChatInput = useRecoilValue(agentChatInputState);
   const { handleSendMessage, isLoading } = useAgentChatContextOrThrow();
 
@@ -21,7 +16,7 @@ export const SendMessageButton = ({
     callback: (event: KeyboardEvent) => {
       if (!event.ctrlKey && !event.metaKey) {
         event.preventDefault();
-        handleSendMessage(records);
+        handleSendMessage();
       }
     },
     focusId: AI_CHAT_INPUT_ID,
@@ -34,7 +29,7 @@ export const SendMessageButton = ({
   return (
     <Button
       hotkeys={agentChatInput && !isLoading ? ['⏎'] : undefined}
-      onClick={() => handleSendMessage(records)}
+      onClick={() => handleSendMessage()}
       disabled={!agentChatInput || isLoading}
       variant="primary"
       accent="blue"