Fix ccr code flag

[TonyGeez]

Description

ccr code was unable to properly forward CLI flags (like --settings, --verbose, --model, etc.) to the underlying claude command.

ccr code --settings settings.json

The command would fail with an error:

Error: Settings file not found: [settings.json,{"env":{...}}]

(See #949)

Fixes

• Removed unnecessary argument parsing and reconstruction
• Simplified settings detection (only checks if --settings exists in args array to avoid conflicts)
• Preserved all CLI functionality
• All claude CLI flags now work through ccr code

Changes

• Removed minimist and shell-quote parsing logic in src/utils/codeCommand.ts
• Simplified argument handling to pass args directly to spawn in src/utils/codeCommand.ts
• Fixed settings flag detection to avoid conflicts
• $\color{Yellow}{\textsf{*}}$ Changed shell: true to shell: false for more reliable execution and fix Node.js deprecation warning (See #892)

$\color{Yellow}{\textsf{*}}$ No shell features was used, so it won't break nothing.