refactor: remove AI profile functionality and related components

- Deleted the AI profile management feature, including all associated views, hooks, and types.
- Updated settings and navigation components to remove references to AI profiles.
- Adjusted local storage and settings synchronization logic to reflect the removal of AI profiles.
- Cleaned up tests and utility functions that were dependent on the AI profile feature.

These changes streamline the application by eliminating unused functionality, improving maintainability and reducing complexity.

apps/ui/tests/utils/git/worktree.ts

@@ -357,7 +357,6 @@ export async function setupProjectWithPath(page: Page, projectPath: string): Pro
         chatSessions: [],
         chatHistoryOpen: false,
         maxConcurrency: 3,
-        aiProfiles: [],
         useWorktrees: true, // Enable worktree feature for tests
         currentWorktreeByProject: {
           [pathArg]: { path: null, branch: 'main' }, // Initialize to main branch
@@ -414,7 +413,6 @@ export async function setupProjectWithPathNoWorktrees(
         chatSessions: [],
         chatHistoryOpen: false,
         maxConcurrency: 3,
-        aiProfiles: [],
         useWorktrees: false, // Worktree feature DISABLED
         currentWorktreeByProject: {},
         worktreesByProject: {},
@@ -470,7 +468,6 @@ export async function setupProjectWithStaleWorktree(
         chatSessions: [],
         chatHistoryOpen: false,
         maxConcurrency: 3,
-        aiProfiles: [],
         useWorktrees: true, // Enable worktree feature for tests
         currentWorktreeByProject: {
           // This is STALE data - pointing to a worktree path that doesn't exist