feat(stream_contract): add overflow-safe calculate_claimable helper f… #45

	name: Security Checks

	on:
	push:
	branches: [ main, develop ]
	pull_request:
	branches: [ main ]
	schedule:
	# Run security checks weekly on Sundays at 2 AM UTC
	- cron: '0 2 * * 0'

	jobs:
	dependency-check:
	name: Dependency Vulnerability Scan
	runs-on: ubuntu-latest

	steps:
	- name: Checkout code
	uses: actions/checkout@v4

	- name: Setup Node.js
	uses: actions/setup-node@v4
	with:
	node-version: '20'
	cache: 'npm'

	- name: Install dependencies
	run: npm ci

	- name: Run npm audit
	run: npm audit --audit-level=moderate

	- name: Check for known vulnerabilities in frontend
	run: \|
	cd frontend
	npm audit --audit-level=moderate

	- name: Check for known vulnerabilities in backend
	run: \|
	cd backend
	npm audit --audit-level=moderate

	codeql-analysis:
	name: CodeQL Analysis
	runs-on: ubuntu-latest
	permissions:
	actions: read
	contents: read
	security-events: write

	strategy:
	fail-fast: false
	matrix:
	language: [ 'javascript', 'typescript' ]

	steps:
	- name: Checkout repository
	uses: actions/checkout@v4

	- name: Initialize CodeQL
	uses: github/codeql-action/init@v3
	with:
	languages: ${{ matrix.language }}

	- name: Autobuild
	uses: github/codeql-action/autobuild@v3

	- name: Perform CodeQL Analysis
	uses: github/codeql-action/analyze@v3

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