Fix: simple agent template notes

[mendonk]

• Remove youtube starter template
• Replace existing simple agent.json with updated readme, description, and key node.

[codspeed-hq]

CodSpeed Performance Report

Merging #4709 will degrade performances by 42.62%

_{Comparing fix-simple-agent-template-notes (962869a) with main (a0acf39)}

Summary

⚡ 2 improvements
❌ 1 regressions
✅ 12 untouched benchmarks

⚠️ Please fix the performance issues or acknowledge them on CodSpeed.

Benchmarks breakdown

	Benchmark	main	fix-simple-agent-template-notes	Change
⚡	test_successful_run_with_input_type_any	298.1 ms	187.4 ms	+59.04%
❌	test_successful_run_with_output_type_any	141.1 ms	245.9 ms	-42.62%
⚡	test_successful_run_with_output_type_debug	249.7 ms	216.5 ms	+15.33%

[ogabrielluiz]

Hey @mendonk

The conflicts are just due to formatting. If you fix them, please run the backend once to make sure the formatting is correct.

[ogabrielluiz]

Hey @mendonk there's probably something wrong with the JSON you added.

[edwinjosechittilappilly]

@mendonk Docs are spinning up.
Investigating why the playwright tests failed!

[mendonk]

@edwinjosechittilappilly the docs are OK
The JSON issue yesterday was because I didn't have a [tag] in the file
Try to start the simple-agent starter template flow in this branch, that's where the issue im seeing is

[edwinjosechittilappilly]

Error in Simple agent flow template:

Flow is Saved correctly, But when loaded as a template, the edges from the URL component as Tools to the agent are missing.
@ogabrielluiz.
We are not updating the flows anywhere in front end, right?