Investigate Size Change action minification

[KyleAMathews]

Add build:minified scripts that enable minification during builds, and configure the compressed-size-action to use these scripts.

This ensures that bundle size measurements in PRs reflect actual code changes rather than being inflated by comments and whitespace, while keeping the published packages readable and unminified.

Changes:

• Add build:minified script to root package.json
• Add build:minified scripts to @tanstack/db and @tanstack/react-db
• Configure compressed-size-action to use build:minified script

🎯 Changes

✅ Checklist

• I have followed the steps in the Contributing guide.
• I have tested this code locally with pnpm test:pr.

🚀 Release Impact

• This change affects published code, and I have generated a changeset.
• This change is docs/CI/dev-only (no release).

[changeset-bot]

⚠️ No Changeset found

Latest commit: 6bbfc52

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[pkg-pr-new]

More templates

• todos
• tanstack-start-db-projects-example
• @tanstack/db-example-react-todo
• @tanstack/db-example-solid-todo

@tanstack/angular-db

npm i https://pkg.pr.new/@tanstack/angular-db@736

@tanstack/db

npm i https://pkg.pr.new/@tanstack/db@736

@tanstack/db-ivm

npm i https://pkg.pr.new/@tanstack/db-ivm@736

@tanstack/electric-db-collection

npm i https://pkg.pr.new/@tanstack/electric-db-collection@736

@tanstack/query-db-collection

npm i https://pkg.pr.new/@tanstack/query-db-collection@736

@tanstack/react-db

npm i https://pkg.pr.new/@tanstack/react-db@736

@tanstack/rxdb-db-collection

npm i https://pkg.pr.new/@tanstack/rxdb-db-collection@736

@tanstack/solid-db

npm i https://pkg.pr.new/@tanstack/solid-db@736

@tanstack/svelte-db

npm i https://pkg.pr.new/@tanstack/svelte-db@736

@tanstack/trailbase-db-collection

npm i https://pkg.pr.new/@tanstack/trailbase-db-collection@736

@tanstack/vue-db

npm i https://pkg.pr.new/@tanstack/vue-db@736

commit: 6bbfc52

[samwillis]

@KyleAMathews the Preview CI task is failing with this error (and it doesn't seem to be a flake):

  /home/runner/setup-pnpm/node_modules/.bin/pnpm run build:minified
   ERR_PNPM_NO_SCRIPT  Missing script: build:minified
  
  Command "build:minified" not found.
  Error: The process '/home/runner/setup-pnpm/node_modules/.bin/pnpm' failed with exit code 1

[KyleAMathews]

@samwillis it's trying to run the script on main where it doesn't exist yet — so once we merge this in it should work.