fix(workspace): fix Gradle init script output parsing for root project

The parser used split("::") which failed on root project lines where
project.path is ":" — the single colon merged with the :: delimiters,
creating an ambiguous sequence that split consumed incorrectly.

Replaced with lastIndexOf-based parsing: strip the ::DA_PROJECT::
prefix, find the last :: separator (directory paths never contain ::),
and extract path and dir from there.

Also fixed test data to use the correct number of colons matching
actual Gradle init script output (::DA_PROJECT:: + ":" + :: = 5 colons
for the root project line).

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

Author: Strum355

src/main/java/io/github/guacsec/trustifyda/impl/ExhortApi.java

@@ -1040,20 +1040,21 @@ static List<GradleProject> parseGradleInitScriptOutput(String raw) {
     if (raw == null || raw.isBlank()) {
       return List.of();
     }
+    String prefix = "::DA_PROJECT::";
     List<GradleProject> projects = new ArrayList<>();
     for (String line : raw.split("\n")) {
-      if (!line.startsWith("::DA_PROJECT::")) {
+      if (!line.startsWith(prefix)) {
         continue;
       }
-      String[] parts = line.split("::");
-      List<String> nonEmpty = new ArrayList<>();
-      for (String part : parts) {
-        if (!part.isEmpty()) {
-          nonEmpty.add(part);
-        }
+      String remainder = line.substring(prefix.length());
+      int lastSep = remainder.lastIndexOf("::");
+      if (lastSep < 0) {
+        continue;
       }
-      if (nonEmpty.size() >= 3) {
-        projects.add(new GradleProject(nonEmpty.get(1), nonEmpty.get(2)));
+      String path = remainder.substring(0, lastSep);
+      String dir = remainder.substring(lastSep + 2);
+      if (!path.isEmpty() && !dir.isEmpty()) {
+        projects.add(new GradleProject(path, dir));
       }
     }
     return projects;

src/test/java/io/github/guacsec/trustifyda/impl/GradleWorkspaceDiscoveryTest.java

@@ -41,7 +41,7 @@ class GradleWorkspaceDiscoveryTest {
   @Test
   void parseGradleInitScriptOutput_standardOutput() {
     String raw =
-        "::DA_PROJECT::::/home/project\n"
+        "::DA_PROJECT:::::/home/project\n"
             + "::DA_PROJECT:::app::/home/project/app\n"
             + "::DA_PROJECT:::lib::/home/project/lib\n";
 
@@ -57,7 +57,7 @@ void parseGradleInitScriptOutput_standardOutput() {
   @Test
   void parseGradleInitScriptOutput_nestedProjects() {
     String raw =
-        "::DA_PROJECT::::/home/project\n"
+        "::DA_PROJECT:::::/home/project\n"
             + "::DA_PROJECT:::libs:core::/home/project/libs/core\n"
             + "::DA_PROJECT:::libs:util::/home/project/libs/util\n";
 
@@ -96,7 +96,7 @@ void discoverWorkspaceManifests_gradleMultiProject() throws IOException {
         GRADLE_FIXTURES.resolve("gradle_multi_project").toAbsolutePath().normalize();
 
     String initScriptOutput =
-        "::DA_PROJECT::::"
+        "::DA_PROJECT:::::"
             + workspaceDir
             + "\n"
             + "::DA_PROJECT:::app::"
@@ -136,7 +136,7 @@ void discoverWorkspaceManifests_nestedSubprojects() throws IOException {
         GRADLE_FIXTURES.resolve("gradle_nested_subprojects").toAbsolutePath().normalize();
 
     String initScriptOutput =
-        "::DA_PROJECT::::"
+        "::DA_PROJECT:::::"
             + workspaceDir
             + "\n"
             + "::DA_PROJECT:::libs:core::"
@@ -184,7 +184,7 @@ void discoverWorkspaceManifests_mixedGroovyAndKotlin() throws IOException {
         GRADLE_FIXTURES.resolve("gradle_mixed_variants").toAbsolutePath().normalize();
 
     String initScriptOutput =
-        "::DA_PROJECT::::"
+        "::DA_PROJECT:::::"
             + workspaceDir
             + "\n"
             + "::DA_PROJECT:::app::"
@@ -223,7 +223,7 @@ void discoverWorkspaceManifests_noSubprojects() throws IOException {
     Path workspaceDir =
         GRADLE_FIXTURES.resolve("gradle_no_subprojects").toAbsolutePath().normalize();
 
-    String initScriptOutput = "::DA_PROJECT::::" + workspaceDir + "\n";
+    String initScriptOutput = "::DA_PROJECT:::::" + workspaceDir + "\n";
 
     try (MockedStatic<Operations> mockOps = Mockito.mockStatic(Operations.class)) {
       mockOps.when(() -> Operations.getWrapperPreference("gradle")).thenReturn(false);
@@ -276,7 +276,7 @@ void discoverWorkspaceManifests_missingSubprojectDirectory() throws IOException
         GRADLE_FIXTURES.resolve("gradle_missing_subproject").toAbsolutePath().normalize();
 
     String initScriptOutput =
-        "::DA_PROJECT::::"
+        "::DA_PROJECT:::::"
             + workspaceDir
             + "\n"
             + "::DA_PROJECT:::app::"
@@ -314,7 +314,7 @@ void discoverWorkspaceManifests_ignorePatternFiltering() throws IOException {
         GRADLE_FIXTURES.resolve("gradle_multi_project").toAbsolutePath().normalize();
 
     String initScriptOutput =
-        "::DA_PROJECT::::"
+        "::DA_PROJECT:::::"
             + workspaceDir
             + "\n"
             + "::DA_PROJECT:::app::"