Malformed JSX in AdminHome.jsx breaks frontend build

[teja-311]

Bug Description

The frontend fails to build/run due to a JSX syntax error.

Error

X [ERROR] Expected ")" but found "variant"
src/components/admin/AdminHome.jsx:133:10

Root Cause

In frontend/src/components/admin/AdminHome.jsx, the <nav> containing the dashboard tab buttons (Users / Payments / Activity Logs) is malformed. The "Activity Logs" button is missing its opening <Button tag, and appears to have been merged incorrectly with a second, duplicate <nav> block. This also splits what should be a single three-way conditional (payments / activity-logs / default users) into two separate, broken conditional blocks:

{activeSection === "payments" ? (
  <PaymentRecords />
    variant={
      activeSection === "activity-logs" ? "contained" : "outlined"
    }
    ...
  </Button>
</nav>

{activeSection === "activity-logs" ? (
  <ActivityLogs />
) : (
  <section ...>

Proposed Fix

Merge into a single <nav> with all three buttons properly opened/closed, and combine the conditionals into one clean three-way check:

<nav aria-label="Admin dashboard sections" style={{ ... }}>
  <Button variant={activeSection === "users" ? "contained" : "outlined"} ... >Users</Button>
  <Button variant={activeSection === "payments" ? "contained" : "outlined"} ... >Payments</Button>
  <Button variant={activeSection === "activity-logs" ? "contained" : "outlined"} ... >Activity Logs</Button>
</nav>

{activeSection === "payments" ? (
  <PaymentRecords />
) : activeSection === "activity-logs" ? (
  <ActivityLogs />
) : (
  <section ...>
    ...

Confirmed the frontend builds and runs cleanly after this fix. Happy to open a PR if assigned.

[udaycodespace]

@teja-311 LGTM. You can work on this.

While submitting the PR, please:

1. Include local test/build output (or screenshots) confirming the frontend builds successfully.
2. Keep the PR focused only on this fix.
3. Do not modify unrelated files (e.g., lockfiles, formatting, or other components) unless they're required for this issue.