feat(fellowship): mark 2026 applications as closed

[miantalha45]

Description

Updates the Fellowship 2026 page to clearly communicate that applications are closed and removes access to the application form.

Related Issue

Fixes #

Type of Change

• 🐛 Bug fix (non-breaking change that fixes an issue)
• ✨ New feature (non-breaking change that adds functionality)
• 💥 Breaking change (fix or feature that would cause existing functionality to not work as expected)
• 📝 Documentation update
• 🎨 Style/UI update
• ♻️ Code refactor (no functional changes)
• ⚡ Performance improvement
• 🔧 Configuration change
• 🧪 Test update

Changes Made

• Changed Fellowship 2026 messaging from “Applications Open” to “Applications Closed.”
• Replaced application CTAs with links to the “What Comes Next” fellowship update.
• Disabled track-selection application buttons and removed the Google Form action.

Screenshots / Videos

Before	After
Applications presented as open	Applications clearly presented as closed

Testing

Test Environment

• OS: macOS
• Browser: tested
• Node.js Version: Not recorded

Test Steps

1. Verified no “Applications Open” or fellowship application CTA remains on the Fellowship page.
2. Verified informational CTAs route to /blog/fellowship-2026-next-steps.
3. Ran git diff --check successfully.

Code Quality

• My code follows the project's coding style and conventions
• I have performed a self-review of my code
• I have commented my code, particularly in hard-to-understand areas
• My changes generate no new warnings or errors

Testing

• I have tested my changes locally
• Existing tests pass with my changes
• I have added tests for new functionality (if applicable)

Documentation

• I have updated the documentation accordingly (if applicable)
• I have updated the README if needed

Build & Lint

• npm run build completes successfully
• npm run lint passes without errors

Security

• No sensitive data (API keys, passwords, etc.) is committed
• Security implications have been considered

Additional Notes

A repository-wide TypeScript check currently reports pre-existing errors in unrelated admin, API, and UI files. No errors were reported from the Fellowship page changes.

[junaiddshaukat]

LGTM

[junaiddshaukat]

@copilot resolve the merge conflicts on this branch.

[Copilot]

@copilot resolve the merge conflicts on this branch.

Resolved by merging main into this branch and fixing the conflict in components/headline-bar.tsx in commit b92ccd0.