refactor: reorganize tests into __tests__/ and harden supply chain security

.envrc

@@ -0,0 +1,2 @@
+use flake
+watch_file flake.lock

.github/workflows/check.yml

@@ -22,10 +22,16 @@ jobs:
 
       - run: pnpm install --frozen-lockfile
 
+      - name: Verify lockfile is up to date
+        run: pnpm install --lockfile-only && git diff --exit-code pnpm-lock.yaml
+
       - name: Type check
         working-directory: ./subtrack
         run: pnpm lint:types
 
       - run: pnpm build
 
       - run: pnpm test
+
+      - name: Audit dependencies
+        run: pnpm audit --audit-level=high

.github/workflows/scorecard.yml

@@ -0,0 +1,35 @@
+name: OpenSSF Scorecard
+
+on:
+  push:
+    branches: [main]
+  schedule:
+    - cron: "0 0 * * 1"
+  workflow_dispatch:
+
+permissions:
+  contents: read
+
+jobs:
+  analysis:
+    runs-on: ubuntu-latest
+    permissions:
+      contents: read
+      id-token: write
+      security-events: write
+
+    steps:
+      - uses: actions/checkout@v4
+        with:
+          persist-credentials: false
+
+      - uses: ossf/scorecard-action@v2.4.0
+        with:
+          results_file: results.sarif
+          results_format: sarif
+          publish_results: true
+
+      - name: Upload Scorecard SARIF result
+        uses: github/codeql-action/upload-sarif@v3
+        with:
+          sarif_file: results.sarif

SECURITY.md

@@ -0,0 +1,49 @@
+# Security Policy
+
+## Reporting a Vulnerability
+
+If you discover a security vulnerability in subtrack, please report it privately.
+
+**Do not** report security vulnerabilities via public GitHub issues.
+
+Instead, send a description of the issue (including steps to reproduce, affected versions, and any relevant code context) to one of the following:
+
+- Open a **private security advisory** at: https://github.com/nazozokc/subtrack/security/advisories/new
+- Email: **nazozokc@icloud.com**
+
+You should receive a response within **48 hours**. If you don't hear back, follow up via the advisory thread.
+
+## Scope
+
+This policy covers the `subtrack` npm package and the `subtrack-monorepo` at https://github.com/nazozokc/subtrack.
+
+The following are **out of scope**:
+- The documentation site under `docs/`
+- Third-party dependencies (report those to the respective maintainers)
+- Theoretical vulnerabilities without a practical exploit path
+
+## What to Expect
+
+- I will acknowledge receipt of your report within 48 hours
+- I will investigate and provide a timeline for a fix
+- Once a fix is ready, I will release a patch and credit you in the release notes (unless you prefer to remain anonymous)
+
+## Supported Versions
+
+| Version | Supported |
+|---------|-----------|
+| >= 4.x  | ✅ Active |
+| < 4.x   | ❌ No longer supported |
+
+## Supply Chain Security
+
+subtrack takes supply chain security seriously:
+
+- **Provenance attestation**: All npm releases use `pnpm publish --provenance` (SLSA Level 1+)
+- **Dependency review**: Every pull request is scanned for new vulnerabilities via GitHub's dependency review action
+- **Renovate bot**: Dependencies are updated with a 7-day minimum release age to detect malicious releases before they reach this project
+- **Lockfile**: A `pnpm-lock.yaml` is committed and verified with `--frozen-lockfile` in CI
+- **Limited build scripts**: Only `esbuild` is permitted to run postinstall scripts (`pnpm.onlyBuiltDependencies`)
+- **CodeQL**: Static analysis runs on every push and PR
+- **pnpm audit**: Runs in CI to catch known vulnerabilities
+- **OpenSSF Scorecard**: Automated supply chain health assessment

pnpm-workspace.yaml

@@ -2,5 +2,8 @@ packages:
   - "subtrack"
   - "docs"
 
+# Only esbuild is permitted to run install scripts.
+# All other dependencies (including transitive) are blocked from running
+# postinstall/preinstall scripts as a supply chain security measure.
 allowBuilds:
   esbuild: true

subtrack/README.md

@@ -6,7 +6,7 @@
 <h1>subtrack</h1>
 </div>
 
-[![Socket Badge](https://badge.socket.dev/npm/package/subtrack/4.0.3)](https://badge.socket.dev/npm/package/subtrack/4.0.3)
+[![Socket Badge](https://badge.socket.dev/npm/package/subtrack)](https://socket.dev/npm/package/subtrack)
 
 <p align="center">
   <img src="images/subtrack-demo.png" alt="subtrack demo" width="700"/>