Clean up tech debt: remove dead code, fix SQL injection

[Copilot]

Repository-wide cleanup to eliminate unused code and fix a critical SQL injection vulnerability.

Removed Dead Code

• Empty files: python/point.py, python/tests/test_calculator.py, terraform/iac.tf (and their empty parent directories)
• Unused imports: System.IO, Microsoft.Extensions.FileProviders from DotnetApp/Program.cs; os, re, defaultdict from scripts/report_bofa_emu_versions.py

Security Fix

Fixed SQL injection in python/sql.py by converting string concatenation to parameterized queries:

# Before (vulnerable)
query = "SELECT * FROM users WHERE username = '" + username + "'"
cursor.execute(query)

# After (safe)
query = "SELECT * FROM users WHERE username = %s"
cursor.execute(query, (username,))

Also fixed broken add_user() function where mysql.connector.connect was missing call parentheses.

Module Completion

• Added rust/tcp.rs to provide the missing module referenced by server.rs (std-only per repo conventions)

Original prompt

Go clean up my code

Custom agent used: Janitor
Perform janitorial tasks on any codebase including cleanup, simplification, and tech debt remediation.

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[sonarqubecloud]

Quality Gate failed

Failed conditions
E Security Rating on New Code (required ≥ A)

See analysis details on SonarQube Cloud

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