fix: correct relative imports after component reorganization

Fixed import paths for 43 components moved into features/ directories.
Key fixes:
- api/, types/, hooks/, state/, utils/ imports need ../../../ from features/*/
- components/ imports need ../../ from features/*/
- Cross-feature imports use relative paths (e.g., ../tool/tools-bottom-sheet)
- app-shell.tsx updated to import from features/ subdirectories

Frontend typecheck now passes except for one pre-existing error:
xterm-addon-webgl missing type declarations.

Quality gates: ruff passed on backend, py_compile passed on all backend files.

apps/web/src/components/features/project/repositories-settings-tab.tsx

@@ -1,9 +1,9 @@
 import React, { useCallback, useEffect, useState } from "react";
 import { useParams } from "react-router-dom";
 
-import { deleteRepository, listRepositories, type GitRepository } from "../api/git-repositories";
+import { deleteRepository, listRepositories, type GitRepository } from "../../../api/git-repositories";
 import { RepositoryCreateDialog } from "./repository-create-dialog";
-import { Icon } from "./icon";
+import { Icon } from "../../icon";
 
 export const RepositoriesSettingsTab: React.FC = () => {
   const { projectId } = useParams<{ projectId: string }>();