Revert version files to dev defaults

These are build-time placeholders — release workflow injects the
actual version from the git tag via -p:Version and Inno Setup regex.

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

Author: yahu2

Directory.Build.props

@@ -1,6 +1,6 @@
 <Project>
   <PropertyGroup>
-    <Version>0.4.0</Version>
+    <Version>1.0.0-dev</Version>
     <Product>RamDrive</Product>
   </PropertyGroup>
 </Project>

setup/RamDrive.iss

@@ -3,7 +3,7 @@
 ; Supports both portable (green) and Windows Service modes
 
 #define MyAppName      "RamDrive"
-#define MyAppVersion   "0.4.0"
+#define MyAppVersion   "1.0.0"
 #define MyAppPublisher "HYProjects"
 #define MyAppExeName   "RamDrive.exe"
 #define MyAppURL       "https://github.com/hooyao/RamDrive"