feat(sse): implement Sinatra SSE + improvement on connection handling

[DayTF]

Definition of Done

task: CU-86c5ucmr0

General

• Write an explicit title for the Pull Request, following Conventional Commits specification
• Test manually the implemented changes
• Validate the code quality (indentation, syntax, style, simplicity, readability)

Security

• Consider the security impact of the changes made

[qltysh]

All good ✅
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[qltysh]

Diff Coverage: The code coverage on the diff in this pull request is 71.2%.

Total Coverage: This PR will decrease coverage by 0.24%.

File Coverage Changes

Path	File Coverage Δ	Indirect
packages/forest_admin_datasource_rpc/lib/forest_admin_datasource_rpc/Utils/sse_client.rb	0.8
packages/forest_admin_rpc_agent/lib/forest_admin_rpc_agent/routes/sse.rb	-29.3

🛟 Help

• Diff Coverage: Coverage for added or modified lines of code (excludes deleted files). Learn more.

• Total Coverage: Coverage for the whole repository, calculated as the sum of all File Coverage. Learn more.

• File Coverage: Covered Lines divided by Covered Lines plus Missed Lines. (Excludes non-executable lines including blank lines and comments.)

  • Indirect Changes: Changes to File Coverage for files that were not modified in this PR. Learn more.

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