git:20260907.012a971 to git:20261013.30600c3

7 added, 0 removed. Audit A to A.

# AgentFEM Case Instructions
+ - Export through `step.solve_result(output=...)`; for custom loops use
+ `io.ResultWriter`. Do not hand-write connectivity, node permutations or XDMF
+ blocks. Use the result manifest's recommended visualization artifact.
+ - Keep point/cell/quadrature fields distinct. Use explicit cell identities for
+ external arrays, not equal-length assumptions or default interface smoothing.
+ - Apply Warp once to reference geometry, never again to already deformed output.
+
- Keep the finite-element sequence visible in `case.py`.
- Use named mesh regions and existing AgentFEM materials, constraints, loads,
steps, and result helpers before writing UFL directly.
- Run `agentfem doctor`, then `agentfem check`, then `agentfem run`.
- Read `outputs/latest.json` and the referenced result manifest
before reporting success.
- Do not describe a completed computation as verified unless the manifest
contains accepted verification evidence.
- Store generated fields, plots, datasets, and reports through the active
`project.RunContext`; do not write into the installed package.