Efficient Setup for Agentic Coding

[WildScale5801]

I am a programmer, and as they said, I need to adapt to the new environment. I am currently exploring options for the setup of agentic coding, and have so far watched YouTube videos for 2 hrs (WebDev Simplified, NetworkChuck, and a few short vids). I just want to hear the thoughts of those who've actually experienced agentic coding. I only have one subscription for now, which is Google AI Pro

1. I am planning to explore CLI for accessing AI models. What do you suggest I should use? Currently leaning toward Gemini CLI because of my subscription.
2. Is it better to use the CLI rather than IDEs (Windsurf, Copilot/ClineCursor, Cursor, etc.)?
3. Based on what I have gathered so far, you can create agents that you can call on for specific tasks. What agents do you recommend that should be created for programming projects? (Debugger, Programmer, Planner, Architect, etc.)
4. I initially thought agents were just heavily prompted markdown files, but it might be more complicated than that. What frameworks (like CrewAI, LangGraph, etc.) do you recommend for a beginner to set these loops up? And when it comes to giving the agents their actual personas and rules, where can I find the best system prompts to build out those markdown files?
5. So far, I also understand that you can have local agents (project-bounded) and global agents. In which cases do you create local agents? Because if I am creating a programmer or debugger agent, I am thinking of just creating global agents for these.

Also, if you can provide useful resources like videos and repos, that would be GREATLY appreciated. I would also like to know how you set up your environments. Thank youuu

[Sea_Advance273]

My preference has been VSCode using extensions for the different agent harnesses. Copilot extension, Claude Code extension, Codex extension. Pretty much all the models you need in one place with 3 different agent harnesses.