Add generic_cylinders.py path for aircond; archive aircond_ef.py

[DLWoodruff]

Summary

Conservative migration — aircond is heavily rst-documented (examples.rst, properbundles.rst, amalgamator.rst, seqsamp.rst) and also referenced from the external DLWoodruff/aircond companion repo, so existing driver filenames are preserved.

• Archive examples/aircond/aircond_ef.py (no callers anywhere) under examples/aircond/archive/.
• examples/run_all.py: add a parallel generic_cylinders.py --module-name ../../mpisppy/tests/examples/aircond invocation next to the existing aircond_cylinders.py entry. generic_cylinders asserts --stage2EFsolvern for multistage --xhatshuffle and aircond.py doesn't register that option, so the parallel entry uses --xhatxbar instead; the xhatshuffle path stays covered by the custom driver above.
• doc/src/examples.rst: expand the aircond section to note that runs can go through the generic driver too (pointing --module-name at mpisppy/tests/examples/aircond); aircond_cylinders.py stays the rst's starting-point / bundles worked example.

Retained in place: aircond_cylinders.py, aircond_ama.py, aircond_seqsampling.py, bundle_pickler.py (all rst-referenced), and every bash/slurm script.

Test plan

• mpiexec -np 3 python -m mpi4py ../../mpisppy/generic_cylinders.py --module-name ../../mpisppy/tests/examples/aircond --branching-factors '4 3 2' --max-iterations=5 --default-rho=1 --lagrangian --xhatxbar --solver-name=gurobi_persistent — runs, lagrangian + xhatxbar converge to ~3.7% cylinder gap after 5 iters
• ruff check examples/run_all.py
• CI run_all job on this PR

🤖 Generated with Claude Code

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 70.72%. Comparing base (b726347) to head (d32cf20).

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #662      +/-   ##
==========================================
+ Coverage   70.71%   70.72%   +0.01%     
==========================================
  Files         153      153              
  Lines       19005    19005              
==========================================
+ Hits        13439    13442       +3     
+ Misses       5566     5563       -3     

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