IronClaw: Extra configuration during install to ensure Web Gateway can run

[SystemIdleProcess]

✍️ Description

Using default install of both debian and alpine I could not get onboard to run without db_error after final prompt and when I did get it to work using onboard --quick I could not get the gateway to start no matter were I set the values to enable it. After much trial and error I found that the .env can easily get a IRONCLAW_PROFILE=local value. Looking to nearai\ironclaw repo I found that this enables cli and disabled gateway. We can set the values needed in the .env, on the service (debian) and in the database using ironclaw config set commands. I added some clarifying steps and outputs for post install steps also. I think they are okay and meet standards. If you feel that this change is not needed or the extra steps are cumbersome I understand if you do not wish to merge it. But I had to have an install that worked. I only have local Ollama so could not test configuring some during onboard but I've tested the actual install over and over.

• Add more post setup messaging for "Next Steps"
• Debian pull gnu binary
• Store gateway auth key in creds file
• Add all gateway and database related values to environment file and service file (debian only)
• Update database using ironclaw config set to store gateway config
• Clear secret from .env so Environment can be properly chosen during onboard

🔗 Related Issue

Fixes #13983

✅ Prerequisites (X in brackets)

• Self-review completed – Code follows project standards.
• Tested thoroughly – Changes work as expected.
• No security risks – No hardcoded secrets, unnecessary privilege escalations, or permission issues.

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🛠️ Type of Change (X in brackets)

• 🐞 Bug fix – Resolves an issue without breaking functionality.
• ✨ New feature – Adds new, non-breaking functionality.
• 💥 Breaking change – Alters existing functionality in a way that may require updates.
• 🆕 New script – A fully functional and tested script or script set.
• 🌍 Website update – Changes to script metadata (PocketBase/website data).
• 🔧 Refactoring / Code Cleanup – Improves readability or maintainability without changing functionality.
• 📝 Documentation update – Changes to README, AppName.md, CONTRIBUTING.md, or other docs.