DLC: Security Scan

Run security checks against the current project and create a GitHub issue with findings.

Before running, read ../dlc/references/ISSUE-TEMPLATE.md now for the issue format, and read ../dlc/references/REPORT-FORMAT.md now for the findings data structure.

Step 1: Detect Project Type

Scan the repository root for project indicators:

Indicator	Project Type	Primary Tool
`package.json` / `package-lock.json` / `bun.lockb`	Node.js	`npm audit` / `bun audit`
`requirements.txt` / `pyproject.toml` / `Pipfile`	Python	`pip-audit`
`Cargo.toml`	Rust	`cargo audit`
`go.mod`	Go	`govulncheck`
`pom.xml` / `build.gradle`	Java/Kotlin	`dependency-check`
`Gemfile`	Ruby	`bundler-audit`