Make falcon pip-installable as falcon-sbi

[cweniger]

Summary

• Rename PyPI distribution from falcon to falcon-sbi to avoid collision with the Falcon web framework
• Consolidate setup.py into a full PEP 621 pyproject.toml (version 0.2.1)
• Add minimum version bounds to all dependencies
• Rename config files from .yaml to .yml across the project
• Update all pip install references in README and docs
• Add GitHub Actions workflow for automatic PyPI publishing on release (trusted publisher / OIDC)

Import name (import falcon) and CLI command (falcon) are unchanged.

Test plan

• pip install -e . succeeds and installs as falcon-sbi
• falcon CLI prints correct version
• python -c "import falcon; print(falcon.__version__)" works
• pip show falcon-sbi shows correct metadata
• CI tests pass
• Configure trusted publisher on PyPI for publish.yml

🤖 Generated with Claude Code

[codecov-commenter]

Codecov Report

❌ Patch coverage is 11.11111% with 8 lines in your changes missing coverage. Please review.
✅ Project coverage is 10.51%. Comparing base (a26d0a4) to head (8afda76).
⚠️ Report is 1 commits behind head on main.

Files with missing lines	Patch %	Lines
falcon/cli.py	0.00%	6 Missing ⚠️
falcon/core/run_loader.py	0.00%	2 Missing ⚠️

Additional details and impacted files

@@           Coverage Diff           @@
##             main      #35   +/-   ##
=======================================
  Coverage   10.51%   10.51%           
=======================================
  Files          32       32           
  Lines        3813     3813           
=======================================
  Hits          401      401           
  Misses       3412     3412           

Flag	Coverage Δ
unit	10.51% <11.11%> (ø)

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