test(oracle): compare resolveOracleClientLocation home with separators neutralized

The Windows daily test failed on test_system.R:1287:

  Expected 'resolved$home' to equal 'homeLayout'.
  x[1]: "C:/Users/.../file18b41bfa68e1/client64"
  y[1]: "C:\\Users\\...\\file18b41bfa68e1/client64"

Test-only bug, not a production one. On Windows tempfile() returns backslashes,
file.path() appends with a forward slash, so homeLayout is a MIXED-separator
string. resolveOracleClientLocation derives home via dirname(), and dirname()
on Windows rewrites every separator to a forward slash -- so the two strings
describe the same directory but can never be identical() there. Mac/Linux never
see it because tempfile() already returns forward slashes.

Compare with the separators neutralized instead (a no-op on Mac/Linux). The
assertion still pins that home is the parent of the lib directory -- the zip
layout's home == "" case and the libDir assertion are untouched.

Verified on the Windows daily-test box (exp-test1) against the installed
package: identical() is FALSE pre-fix and TRUE post-fix; full test_system.R
still passes on Mac ARM.

No DESCRIPTION bump: tests only, no shipped R code change, so no rebuilt
binaries are required.

Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>

Author: hidekoji

tests/testthat/test_system.R

@@ -1282,9 +1282,13 @@ test_that("resolveOracleClientLocation only reports an ORACLE_HOME for the lib s
   file.create(file.path(zipLayout, "libclntsh.dylib.23.1"))
 
   # ROracle only ever looks at $ORACLE_HOME/lib, so home is the parent of the lib directory.
+  # resolveOracleClientLocation derives home with dirname(), which on Windows rewrites every
+  # separator to a forward slash, while tempfile() hands back backslashes -- so compare with the
+  # separators neutralized rather than against the raw homeLayout string. (no-op on Mac/Linux)
+  forwardSlashes <- function(p) gsub("\\\\", "/", p)
   resolved <- exploratory:::resolveOracleClientLocation(homeLayout)
   expect_equal(resolved$libDir, file.path(homeLayout, "lib"))
-  expect_equal(resolved$home, homeLayout)
+  expect_equal(forwardSlashes(resolved$home), forwardSlashes(homeLayout))
 
   # The zip layout cannot be expressed as an ORACLE_HOME, so home stays empty and the
   # caller falls back to loading the library directly.