dough-core and all of that

dough-fs/src/commonMain/kotlin/gay/pizza/dough/fs/FsOperations.kt

@@ -1,10 +1,12 @@
 package gay.pizza.dough.fs
 
+import gay.pizza.dough.core.time.UnixTime
 import kotlinx.serialization.DeserializationStrategy
 import kotlinx.serialization.SerializationStrategy
 
 interface FsOperations {
   fun exists(path: FsPath): Boolean
+
   fun isDirectory(path: FsPath): Boolean
   fun isRegularFile(path: FsPath): Boolean
   fun isSymbolicLink(path: FsPath): Boolean
@@ -12,6 +14,8 @@ interface FsOperations {
   fun isWritable(path: FsPath): Boolean
   fun isExecutable(path: FsPath): Boolean
 
+  fun lastModified(path: FsPath): UnixTime
+
   fun list(path: FsPath): Sequence<FsPath>
 
   fun walk(path: FsPath): Sequence<FsPath>

dough-fs/src/commonMain/kotlin/gay/pizza/dough/fs/FsProvider.kt

@@ -0,0 +1,8 @@
+package gay.pizza.dough.fs
+
+interface FsProvider {
+  val currentWorkingDirectory: FsPath
+  val operations: FsOperations
+
+  fun resolve(path: String): FsPath
+}

dough-fs/src/commonMain/kotlin/gay/pizza/dough/fs/PlatformSpecific.kt

@@ -1,3 +1,3 @@
 package gay.pizza.dough.fs
 
-expect fun FsPath(path: String): FsPath
+expect val PlatformFsProvider: FsProvider