add app sripts, fix python version, small updates

anyeye

Author: Tieqiong

pyproject.toml

@@ -14,7 +14,7 @@ maintainers = [
 description = "Crystal structure container and parsers for structure formats."
 keywords = ['diffpy', 'crystal structure data storage CIF PDB']
 readme = "README.rst"
-requires-python = ">=3.10"
+requires-python = ">=3.10, < 3.13"
 classifiers = [
         'Development Status :: 5 - Production/Stable',
         'Environment :: Console',
@@ -36,6 +36,9 @@ classifiers = [
 Homepage = "https://github.com/diffpy/diffpy.structure/"
 Issues = "https://github.com/diffpy/diffpy.structure/issues/"
 
+[project.scripts]
+transtru = "diffpy.structure.apps.transtru:main"
+
 [tool.setuptools-git-versioning]
 enabled = true
 template = "{tag}"

src/diffpy/structure/apps/anyeye.py

@@ -265,7 +265,7 @@ def main():
         spawnargs = (pd["viewer"], pd["viewer"], pd["tmpfile"], env)
         # load strufile in atomeye
         if pd["watch"]:
-            signal.signal(signal.SIGCLD, signalHandler)
+            signal.signal(signal.SIGCHLD, signalHandler)
             os.spawnlpe(os.P_NOWAIT, *spawnargs)
             watchStructureFile(pd)
         else: