[Bug]: 5 projects reference missing starter code files (20-24: flashcard_app, budget_tracker, port_scanner, typing_test, course_tracker) - View Code/Download 404

[ionfwsrijan]

Summary

Five projects in data/projects.json reference starter-code files that do not exist in the repository. On the project detail page, "View Code" and "Download" for these projects return 404 (the file-server route read_starter_code/resolve_starter_file can't find the referenced path).

Evidence

Cross-checking every starter_code value in data/projects.json against starter_code/:

Project id	Title	Referenced path	Status
20	Flashcard Study App	starter_code/flashcard_app.html	missing
21	Budget Tracker Web App	starter_code/budget_tracker.html	missing
22	Network Port Scanner	starter_code/port_scanner.py	missing
23	Typing Speed Test	starter_code/typing_test.html	missing
24	Course Progress Tracker	starter_code/course_tracker.py	missing

All other referenced files (including password_checker.py and url_shortener.py, previously reported as missing in #480/#550) now exist — only these five are still broken.

The project pages render a "Starter Code" tab unconditionally for these projects, and src/utils/file_server.py resolves the path against the starter_code/ directory, so clicking the links surfaces a 404.

Impact

• 5 of the 34 advertised projects ship with broken "View Code" / "Download" starter-code actions — the core value proposition ("starter code ready") is broken for those projects.
• The detail-page UI gives no indication the file is missing.

Suggested Fix

• Add the five missing files to starter_code/ (they're listed in the README's dataset as available), or
• Set starter_code: null for those projects and have the template hide the starter-code tab when null, and/or
• Add a startup/test validation that every non-null starter_code reference resolves to an existing file.