feat/Implement Alumni Page — Officers Hierarchy + Role-Grouped Members

[nzdable]

Build the Alumni page using the provided JSON and design reference.

Two sections:

1. officer hierarchy and
2. role-grouped member lists.

Acceptance Criteria

• Hero section with title, batch year, and tagline
• Officers displayed in tiered layout
• Members grouped by role, sorted alphabetically
• Responsive on mobile
• All data sourced from alumni.json

Use the ff design as reference, or refer to this Figma File:

Use the ff json file content:

{
  "title": "Alumni (2024–2025)",
  "batchYear": "2024–2025",
  "officers": [
    { "firstName": "Jiyo Seth",       "lastName": "Valmoria",  "role": "Director" },
    { "firstName": "Arabella Grace",  "lastName": "Mejorada",  "role": "Deputy Director" },
    { "firstName": "Jan Patrick",     "lastName": "Matayabas", "role": "External Affairs Head" },
    { "firstName": "Mariel",          "lastName": "Mabano",    "role": "Secretary-General" },
    { "firstName": "Isabelle Faith",  "lastName": "Labuguen",  "role": "Auditor" },
    { "firstName": "Aaron Justin",    "lastName": "Macias",    "role": "Treasurer" },
    { "firstName": "Paolo Luis",      "lastName": "Ramirez",   "role": "Front End Development Head" },
    { "firstName": "Ivan Sam",        "lastName": "Wabina",    "role": "Back End Development Head" },
    { "firstName": "Maverick",        "lastName": "Pigao",     "role": "UI/UX Design Head" },
    { "firstName": "Mark Lyod",       "lastName": "Carin",     "role": "Creatives Head" }
  ],
  "data": [
    {
      "role": "Front-End Developer",
      "members": [
        { "firstName": "Kervi Kent",      "lastName": "Asombrado" },
        { "firstName": "Kirby Josh",      "lastName": "Calong"    },
        { "firstName": "Peter Andre",     "lastName": "Casiano"   },
        { "firstName": "Sean Elijah",     "lastName": "Chavez"    },
        { "firstName": "Anya Patricia",   "lastName": "Kuan"      },
        { "firstName": "Mariel",          "lastName": "Mabano"    },
        { "firstName": "Paolo Luis",      "lastName": "Ramirez"   },
        { "firstName": "Yassir",          "lastName": "Utara"     },
      ]
    },
    {
      "role": "Back-End Developer",
      "members": [
        { "firstName": "Adrianne Mykhel",    "lastName": "Bulao"     },
        { "firstName": "Mark Cyryl",         "lastName": "Clarde"    },
        { "firstName": "Isabelle Faith",     "lastName": "Labuguen"  },
        { "firstName": "Janriz Christian",   "lastName": "Prado"     },
        { "firstName": "Ivan Sam",           "lastName": "Wabina"    },
        { "firstName": "Anthony Dexter",     "lastName": "Yap"       }
      ]
    },
    {
      "role": "FullStack Developer",
      "members": [
        { "firstName": "Ron Joshua",           "lastName": "Bersabal"  },
        { "firstName": "Marvin Paul",          "lastName": "Eloja"     },
        { "firstName": "Derick Lance",         "lastName": "Eroy"      },
        { "firstName": "Aaron Justin",         "lastName": "Macias"    },
        { "firstName": "Jan Patrick",          "lastName": "Matayabas" },
        { "firstName": "Marjhealou Nina Anne", "lastName": "Paraiso"   },
        { "firstName": "Jiyo Seth",            "lastName": "Valmoria"  }
      ]
    },
    {
      "role": "UI/UX Designer",
      "members": [
        { "firstName": "Dominic Miguel",  "lastName": "Almonte"    },
        { "firstName": "Martina Aaron",   "lastName": "Angeles"    },
        { "firstName": "Clyde Cedrick",   "lastName": "Macabangon" },
        { "firstName": "Maverick Jasper", "lastName": "Pigao"      }
      ]
    },
    {
      "role": "Creatives",
      "members": [
        { "firstName": "Josh Elizalde",   "lastName": "Banggud"  },
      ]
    },
    {
      "role": "Project Manager",
      "members": [
        { "firstName": "Martina Aaron",   "lastName": "Angeles"  },
        { "firstName": "Isabelle Faith",  "lastName": "Labuguen" },
        { "firstName": "Jan Patrick",     "lastName": "Matayabas"},
        { "firstName": "Jiyo Seth",       "lastName": "Valmoria" }
      ]
    },
    {
      "role": "Quality Assurance Specialist",
      "members": [
        { "firstName": "Jiyo Seth",     "lastName": "Valmoria"   }
      ]
    }
  ]
}