fix(cli): performance fixes and correctness improvements

[jdmanring]

Summary

Multiple CLI performance and correctness fixes:

• L-01: Removed spawnWrapper no-op re-export
• L-02: Merged processUtils into relaunch
• L-03: Fixed errors.ts never-resolving promise pattern
• L-04: Used ANSI escape for clearScreen instead of console.clear
• L-05: Deduplicated apiPreconnect default URLs
• L-06: Removed Object.freeze in CommandService
• L-07: Fixed sessionPaths off-by-one in insertRecentFile
• L-10: Replaced O(n) queue.shift() with splice(0) in flush
• L-11,L-12: Used Object.fromEntries for env filtering, removed unused param

Files Changed

• packages/cli/src/utils/*.ts (multiple files)
• packages/cli/src/services/CommandService.ts

Type of Change

• Bug fix
• Performance improvement
• Refactor
• New feature

Testing

• Unit tests pass
• Integration tests pass