chore: add script to check for malformed build scripts

[Opulencechuks]

Closes #333

Description

This PR introduces a script to check for malformed build scripts across all package.json files in the monorepo. It specifically checks if build, typecheck, or lint scripts have accidentally been concatenated (e.g., "build": "tsc -p tsconfig.json pnpm start pnpm typecheck pnpm lint"). This ensures workspace packages maintain clean, single-purpose script entries without cross-contamination.

Linked Issue

Closes #

Type of Change

• 🐛 Bug fix
• ✨ New feature / enhancement
• 📝 Documentation update
• 🔧 Chore / refactor
• 🧪 Tests only

Changes Made

• Added scripts/check-scripts.js to recursively read all workspace package.json files and check for concatenated script anti-patterns.
• Ran a workspace-wide verification which confirmed all existing packages (including @guildpass/integration-client) currently have correctly isolated build, typecheck, and lint commands.

Test Evidence

Running the new diagnostic script yields a clean bill of health across the workspace:

> node scripts/check-scripts.js
--- Malformed Scripts Report ---
No malformed scripts found! All build, typecheck, and lint scripts are clean and single-purpose.

Checklist

• I have read CONTRIBUTING.md
• This PR is linked to an open issue
• pnpm typecheck passes with no errors
• pnpm lint passes (or issues are pre-existing and documented)
• pnpm test passes (all existing tests still pass)
• The dashboard starts and renders correctly (if UI or API code changed)
• The Discord bot still starts and responds to commands (if bot code changed)
• Docs site renders correctly (if docs changed): pnpm dev:docs
• No secrets, tokens, or API keys are included in this PR
• Environment variable changes are reflected in .env.example
• I have updated documentation if new behaviour was introduced

Screenshots / Recordings

N/A - CI/CLI Tooling change only.

Additional Notes

Initial investigation showed that @guildpass/integration-client and all other packages are currently clean on this branch. The addition of this script fulfills the acceptance criteria to have a repeatable check/checklist for this issue going forward.