slosh: layout files are *.layout, not *.layout.kdl

The old name argued that the extension should say how to read the
file. The argument lost to a collision: zellij speaks the same KDL
syntax under that same extension with a different schema, and to
anyone arriving from there .kdl said *whose* file it is -- naming the
wrong owner is worse than not naming the parser. So a layout is
x.layout, a project's is slosh.layout, the name says what the file is
and --check says how it was read. (It is still KDL underneath; point
your editor's highlighting at *.layout.)

Nobody's checked-in workspace vanishes on upgrade: the project scan
still finds slosh.layout.kdl, never writes it, and where both
spellings exist the new one wins, because two files disagreeing needs
one answer. The unparseable-file heuristic in --check learned the new
suffix -- it matched '.layout.' with a trailing dot, which the new
name no longer has.

The webdemo overlay moves with it (demo.layout), rebuilt and
boot-checked.

1 files changed, 7 insertions, 0 deletions

diff --git a/src/project.c b/src/project.c
index 9146971..296cb25 100644
--- a/src/project.c
+++ b/src/project.c
@@ -81,6 +81,13 @@ static bool describe(const char *path, project_t *p) {
     p->mtime = (int64_t)lst.st_mtime;
     return true;
   }
+  /* The old spelling, found but never written: see PROJECT_LAYOUT_FILE_OLD. */
+  if (exists(p->path, PROJECT_LAYOUT_FILE_OLD, &lst)) {
+    snprintf(p->layout, sizeof p->layout, "%s/%s", p->path,
+             PROJECT_LAYOUT_FILE_OLD);
+    p->mtime = (int64_t)lst.st_mtime;
+    return true;
+  }
   return exists(p->path, ".git", NULL);
 }