[pull] develop from lammps:develop

.claude/CLAUDE.md

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+# LAMMPS Project Instructions (Claude Code entry point)
+
+@../.github/copilot-instructions.md
+
+The imported file above is the always-loaded core shared with GitHub Copilot.  Its
+"Task-Specific Guides" index lists the detailed guides in `.github/instructions/` and
+`.github/dev-docs/`; read the matching guide BEFORE starting that kind of work.  The
+files in `.claude/rules/` load the path-scoped guides automatically when matching
+source files are read.
+
+Machine- and user-specific facts (local build directory, git remotes, worktrees) live
+in the untracked, gitignored `CLAUDE.local.md` at the repository root, which Claude
+Code loads automatically when present.

.claude/rules/documentation.md

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+---
+paths:
+  - "doc/**"
+---
+
+Working on documentation: read `.github/instructions/documentation.instructions.md`
+now (versionadded/versionchanged policy, build/spelling mechanics, wording rules,
+figure workflow).

.claude/rules/force-style-tests.md

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+---
+paths:
+  - "unittest/**"
+---
+
+Working on unit tests: read `.github/instructions/force-style-tests.instructions.md`
+now (YAML force-style test mechanics, accelerator-suffix auto-testing, respa
+tolerances, reference regeneration).

.claude/rules/granular-tests.md

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+---
+paths:
+  - "unittest/granular/**"
+  - "src/GRANULAR/**"
+---
+
+Working on granular/DEM code or tests: read
+`.github/instructions/granular-tests.instructions.md` now (test-suite architecture,
+YAML regeneration, atom-map and physics-setup gotchas).

.claude/rules/kokkos.md

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+---
+paths:
+  - "src/KOKKOS/**"
+---
+
+Working on KOKKOS package files: read `.github/instructions/kokkos.instructions.md`
+now (rules and policies).  When porting a style to KOKKOS, also read
+`.github/dev-docs/kokkos-porting-guide.md` (templates, lessons) and
+`.github/dev-docs/kokkos-porting-backlog.md` (what remains; trust `ls src/KOKKOS/`
+and `git log` over its tables).

.gitattributes

@@ -1,6 +1,7 @@
 .gitattributes export-ignore
 .gitignore export-ignore
 .github export-ignore
+.claude export-ignore
 .lgtm.yml export-ignore
 SECURITY.md export-ignore
 CITATION.cff export-ignore