resolve syntax errors in script.js breaking project recommendations

[Kazuma-Codes]

Summary

Fixed critical JavaScript syntax errors in static/script.js that completely broke the project recommendation feature. The fetch API's .catch() error handler contained a duplicated payload variable block instead of proper error handling logic, and was missing closing brackets. Additionally, the renderResults function had a duplicated and incorrectly nested if (!projects || projects.length === 0) conditional block. These two issues caused a SyntaxError: Unexpected end of input at line 933, preventing the browser from executing any client-side JavaScript — making the entire "Find Projects" form non-functional.

Related Issue

Closes #672

Type of Change

• Bug fix — resolves a broken behaviour
• Feature — adds new functionality
• Data — adds new projects to data/projects.json
• Documentation — updates docs, README, or code comments only
• Style — CSS or visual changes only, no logic change
• Refactor — restructures code without changing behaviour
• Test — adds or updates tests

What Was Changed

File	Change made
static/script.js	Fixed broken .catch() block — replaced duplicated payload code with proper error handling and restored missing closing brackets
static/script.js	Fixed renderResults() — removed duplicated nested empty-check conditional and consolidated into a single block

How to Test This PR

1. Clone this branch: frontend-bug
2. Install dependencies: pip install -r requirements.txt
3. Verify the JavaScript has no syntax errors: node -c static/script.js (should produce no output)
4. Run the app: python app.py
5. Open http://127.0.0.1:5000/
6. Enter a skill, select Experience Level, Area of Interest , Time Availability
7. Click the submit button — project recommendation cards should now appear

Expected test output:

27 passed, 0 failed out of 27 tests

Test Results

40 passed, 0 failed out of 40 tests

Self-Review Checklist

• I have read CONTRIBUTING.md and followed all guidelines
• My branch name follows the convention: feat/, fix/, docs/, data/, style/, test/
• I have run python tests/test_basic.py and all 27 tests pass
• I have run flake8 . locally and there are no errors
• I have not introduced any print() or console.log() debug statements
• Every new function I wrote has a docstring
• I have not modified files outside the scope of the linked issue
• If I changed the UI, I tested it at 375px (mobile) and 1280px (desktop)
• If I added a project to the dataset, it has all required JSON fields

Notes for Reviewer

The root cause was static/script.js as duplicated code blocks broke the .catch() handler and renderResults()

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