fix: align Gemfile with Runner Ruby 2.7 and add Gemfile.lock

- Downgrade cocoapods to ~> 1.15.2 (matching other projects)
- Add Gemfile.lock with BUNDLED WITH 2.4.22 (compatible with Ruby 2.7)
- Add legacy-peer-deps=true to .npmrc for emb npm install
- Remove CI debug commands
1 job for main in 3 seconds (queued for 2 seconds)
Status Job ID Name Coverage
  Build
failed #127591
studio triggered
ci-build

00:00:03

 
Name Stage Failure
failed
ci-build Build
  output: [ null, null, null ],
pid: 32566,
stdout: null,
stderr: null
}

Node.js v18.20.4
Cleaning up project directory and file based variables
ERROR: Job failed: exit status 1