fix(bundler): change build metadata verification into a warning

.changes/change.md

@@ -0,0 +1,5 @@
+---
+'tauri-bundler': 'patch:bug'
+---
+
+Removed NSIS bundler semver numeric validation

crates/tauri-bundler/src/bundle/windows/nsis/installer.nsi

@@ -77,12 +77,12 @@ OutFile "${OUTFILE}"
 !define PLACEHOLDER_INSTALL_DIR "placeholder\${PRODUCTNAME}"
 InstallDir "${PLACEHOLDER_INSTALL_DIR}"
 
-VIProductVersion "${VERSIONWITHBUILD}"
+VIProductVersion "${VERSION}"
 VIAddVersionKey "ProductName" "${PRODUCTNAME}"
 VIAddVersionKey "FileDescription" "${PRODUCTNAME}"
 VIAddVersionKey "LegalCopyright" "${COPYRIGHT}"
 VIAddVersionKey "FileVersion" "${VERSION}"
-VIAddVersionKey "ProductVersion" "${VERSION}"
+VIAddVersionKey "ProductVersion" "${VERSIONWITHBUILD}"
 
 ; Plugins path, currently exists for linux only
 !if "${PLUGINSPATH}" != ""

crates/tauri-bundler/src/bundle/windows/nsis/mod.rs

@@ -131,7 +131,7 @@ fn get_and_extract_nsis(nsis_toolset_path: &Path, _tauri_tools_path: &Path) -> c
   Ok(())
 }
 
-fn add_build_number_if_needed(version_str: &str) -> anyhow::Result<String> {
+fn try_add_numeric_build_number(version_str: &str) -> anyhow::Result<String> {
   let version = semver::Version::parse(version_str).context("invalid app version")?;
   if !version.build.is_empty() {
     let build = version.build.parse::<u64>();
@@ -140,8 +140,6 @@ fn add_build_number_if_needed(version_str: &str) -> anyhow::Result<String> {
         "{}.{}.{}.{}",
         version.major, version.minor, version.patch, version.build
       ));
-    } else {
-      anyhow::bail!("optional build metadata in app version must be numeric-only");
     }
   }
 
@@ -150,6 +148,22 @@ fn add_build_number_if_needed(version_str: &str) -> anyhow::Result<String> {
     version.major, version.minor, version.patch,
   ))
 }
+
+fn add_build_number(version_str: &str) -> anyhow::Result<String> {
+  let version = semver::Version::parse(version_str).context("invalid app version")?;
+  if !version.build.is_empty() {
+    return Ok(format!(
+      "{}.{}.{}.{}",
+      version.major, version.minor, version.patch, version.build
+    ));
+  }
+
+  Ok(format!(
+    "{}.{}.{}.0",
+    version.major, version.minor, version.patch,
+  ))
+}
+
 fn build_nsis_app_installer(
   settings: &Settings,
   _nsis_toolset_path: &Path,
@@ -211,11 +225,8 @@ fn build_nsis_app_installer(
   }
 
   let version = settings.version_string();
-  data.insert("version", to_json(version));
-  data.insert(
-    "version_with_build",
-    to_json(add_build_number_if_needed(version)?),
-  );
+  data.insert("version", to_json(try_add_numeric_build_number(version)?));
+  data.insert("version_with_build", to_json(add_build_number(version)?));
 
   data.insert(
     "allow_downgrades",