Add employee cards, filters, and selection behavior with “You” contact card fallback

[VihaanIyer]

Summary

• Add employee cards, search, and filter dropdowns based on uploaded data
• Show selected employee in the left panel
• Reset selection to the “You” card when clicking empty space below the top toolbar

Testing

• Not run (UI-only changes)

[Thomasbenissan]

Updated this PR to align with issue #58 and the current directory architecture. Key changes made:\n\n- moved implementation into existing flow instead of the alternate dashboard/root component stack\n- added a full profile side panel under search/filters with view and edit states\n- added self-only edit controls (view others, edit your own profile)\n- added profile photo upload in edit mode with immediate preview\n- added editable profile fields (name, position, department, location, bio, contact, birthday) and explicit non-mutable fields (employee ID, email)\n- wired search + department/role/location filters into directory state and results rendering\n- kept selection behavior so clicking empty results space resets selection to the current user\n- removed duplicate temporary components/types introduced in the earlier version\n\nValidation run locally:\n- \n-

odyssey@0.0.1 lint
next lint

./src/components/hrservices/career-dev/CareerDev.tsx
284:11 Warning: Using <img> could result in slower LCP and higher bandwidth. Consider using <Image /> from next/image or a custom image loader to automatically optimize images. This may incur additional usage or cost from your provider. See: https://nextjs.org/docs/messages/no-img-element @next/next/no-img-element

info - Need to disable some ESLint rules? Learn more here: https://nextjs.org/docs/basic-features/eslint#disabling-rules (passes; one unrelated existing warning in )\n

[Thomasbenissan]

Updated this PR to align with issue #58 and the current directory architecture. Key changes made:\n\n- moved implementation into existing src/components/directory flow instead of the alternate dashboard/root component stack\n- added a full profile side panel under search/filters with view and edit states\n- added self-only edit controls (view others, edit your own profile)\n- added profile photo upload in edit mode with immediate preview\n- added editable profile fields (name, position, department, location, bio, contact, birthday) and explicit non-mutable fields (employee ID, email)\n- wired search + department/role/location filters into directory state and results rendering\n- kept selection behavior so clicking empty results space resets selection to the current user\n- removed duplicate temporary components/types introduced in the earlier version\n\nValidation run locally:\n- npx tsc --noEmit\n- npm run lint (passes; one unrelated existing warning in CareerDev.tsx)\n

[Thomasbenissan]

Implemented the requested #58 profile panel scope on this branch and validated locally. This is now aligned with the existing directory architecture and ready for merge once branch protection requirements are satisfied.