✨ Feat/projection management

[ccamel]

Adds a (small) management layer around projection runners: explicit start/stop by projection name, lookup, supervision, and cleanup when runners die.

Also wires the demo app to run a simple in-memory balance projection.

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⚙️ Run configuration

Configuration used: Path: .coderabbit.yaml

Review profile: CHILL

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Run ID: 6839cf96-2edd-4d79-8b9c-071a6247a92b

📥 Commits

Reviewing files that changed from the base of the PR and between 911c43b and 4a597e2.

📒 Files selected for processing (14)

• README.md
• apps/es_projection/src/es_projection.app.src
• apps/es_projection/src/es_projection.erl
• apps/es_projection/src/es_projection_app.erl
• apps/es_projection/src/es_projection_mgr.erl
• apps/es_projection/src/es_projection_root_sup.erl
• apps/es_projection/src/es_projection_sup.erl
• apps/es_projection/test/es_projection_management_tests.erl
• apps/es_projection/test/es_projection_tests.erl
• apps/es_xp/examples/demo_bank.script
• apps/es_xp/src/bank_account_balance_projection.erl
• apps/es_xp/src/es_xp.app.src
• apps/es_xp/src/es_xp_app.erl
• codecov.yml

✨ Finishing Touches

🧪 Generate unit tests (beta)

• Create PR with unit tests
• Commit unit tests in branch feat/projection-management

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[codecov]

Codecov Report

❌ Patch coverage is 87.93103% with 7 lines in your changes missing coverage. Please review.
✅ Project coverage is 79.62%. Comparing base (911c43b) to head (4a597e2).

Files with missing lines	Patch %	Lines
apps/es_projection/src/es_projection_mgr.erl	79.41%	7 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main      #61      +/-   ##
==========================================
+ Coverage   75.99%   79.62%   +3.63%     
==========================================
  Files          26       27       +1     
  Lines         654      697      +43     
==========================================
+ Hits          497      555      +58     
+ Misses        157      142      -15     

Flag	Coverage Δ
erlang	79.62% <87.93%> (+3.63%)	⬆️

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