[PM-34027] fix: use fileURLToPath for main module detection

[tecnologicachile]

Summary

• Replace the brittle process.argv[1].endsWith('index.js') main module check with process.argv[1] === fileURLToPath(import.meta.url)
• Add import { fileURLToPath } from 'url' to support the new check
• The previous check fails when the server is invoked via the npm binary wrapper (mcp-server-bitwarden), because process.argv[1] points to the symlink/wrapper script rather than index.js, so the server never starts

Test plan

• npm run build compiles successfully
• Run npx mcp-server-bitwarden and verify the server starts (previously it would silently exit)
• Run node dist/index.js directly and verify it still starts correctly

Fixes #158

🤖 Generated with Claude Code

[CLAassistant]

All committers have signed the CLA.

[bitwarden-bot]

Thank you for your contribution! We've added this to our internal tracking system for review.
ID: PM-34027
Link: https://bitwarden.atlassian.net/browse/PM-34027

Details on our contribution process can be found here: https://contributing.bitwarden.com/contributing/pull-requests/community-pr-process.

[withinfocus]

Thanks for your contribution. We pin dependencies and you can remove your unrelated change.

[withinfocus]

This can be reverted.

[sonarqubecloud]

Quality Gate passed

Issues
0 New issues
0 Accepted issues

Measures
0 Security Hotspots
0.0% Coverage on New Code
0.0% Duplication on New Code

See analysis details on SonarQube Cloud

[codecov]

Codecov Report

❌ Patch coverage is 0% with 1 line in your changes missing coverage. Please review.
✅ Project coverage is 51.92%. Comparing base (38762b7) to head (287a24d).
⚠️ Report is 2 commits behind head on main.
✅ All tests successful. No failed tests found.

Files with missing lines	Patch %	Lines
src/index.ts	0.00%	1 Missing ⚠️

Additional details and impacted files

@@           Coverage Diff           @@
##             main     #168   +/-   ##
=======================================
  Coverage   51.92%   51.92%           
=======================================
  Files          12       12           
  Lines         909      909           
  Branches      197      197           
=======================================
  Hits          472      472           
  Misses        387      387           
  Partials       50       50           

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[github-actions]

Checkmarx One – Scan Summary & Details – d0550273-286c-4802-8942-5952f193bcaf

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New Issues (1)

Checkmarx found the following issues in this Pull Request

#	Severity	Issue	Source File / Package	Checkmarx Insight
1		CVE-2026-33228	Npm-flatted-3.4.1	details Recommended version: 3.4.2 Description: The "parse()" function in flatted can use attacker-controlled string values from the parsed JSON as direct array index keys, without validating t... Attack Vector: NETWORK Attack Complexity: LOW Vulnerable Package