implements PLN-0105

discussion/index.ndjson

@@ -10,7 +10,7 @@
 {"type":"discussion","id":"DSC-0057","status":"open","ticket":"multi-frontend-frontend-backend-contract","title":"Estabilizar contrato entre frontend e backend comum","created_at":"2026-07-15","updated_at":"2026-07-15","tags":["compiler","compiler-general","compiler-pbs","ir","backend","multi-frontend"],"agendas":[{"id":"AGD-0060","file":"AGD-0060-multi-frontend-frontend-backend-contract.md","status":"open","created_at":"2026-07-15","updated_at":"2026-07-15"}],"decisions":[],"plans":[],"lessons":[]}
 {"type":"discussion","id":"DSC-0056","status":"open","ticket":"multi-frontend-remove-pbs-branches","title":"Remover verificacoes explicitas de PBS do codigo comum","created_at":"2026-07-15","updated_at":"2026-07-15","tags":["compiler","compiler-general","compiler-pbs","studio","frontend","coupling","multi-frontend"],"agendas":[{"id":"AGD-0059","file":"AGD-0059-multi-frontend-remove-pbs-branches.md","status":"open","created_at":"2026-07-15","updated_at":"2026-07-15"}],"decisions":[],"plans":[],"lessons":[]}
 {"type":"discussion","id":"DSC-0055","status":"open","ticket":"multi-frontend-compiler-vs-language-services","title":"Separar compilacao de servicos editoriais de frontend","created_at":"2026-07-15","updated_at":"2026-07-15","tags":["compiler","compiler-general","studio","lsp","editor","frontend","multi-frontend"],"agendas":[{"id":"AGD-0058","file":"AGD-0058-multi-frontend-compiler-vs-language-services.md","status":"open","created_at":"2026-07-15","updated_at":"2026-07-15"}],"decisions":[],"plans":[],"lessons":[]}
-{"type":"discussion","id":"DSC-0054","status":"in_progress","ticket":"multi-frontend-provider-contract","title":"Introduzir provider completo de frontend","created_at":"2026-07-15","updated_at":"2026-07-15","tags":["compiler","compiler-general","studio","frontend","registry","multi-frontend"],"agendas":[{"id":"AGD-0057","file":"AGD-0057-multi-frontend-provider-contract.md","status":"accepted","created_at":"2026-07-15","updated_at":"2026-07-15"}],"decisions":[{"id":"DEC-0040","file":"DEC-0040-frontendprovider-explicito-como-contrato-de-frontend.md","status":"accepted","created_at":"2026-07-15","updated_at":"2026-07-15","ref_agenda":"AGD-0057"}],"plans":[{"id":"PLN-0103","file":"PLN-0103-specify-frontend-provider-and-registry-contract.md","status":"done","created_at":"2026-07-15","updated_at":"2026-07-15","ref_decisions":["DEC-0040"]},{"id":"PLN-0104","file":"PLN-0104-introduce-frontendprovider-registry-api.md","status":"done","created_at":"2026-07-15","updated_at":"2026-07-15","ref_decisions":["DEC-0040"]},{"id":"PLN-0105","file":"PLN-0105-wrap-pbs-frontend-as-explicit-provider.md","status":"open","created_at":"2026-07-15","updated_at":"2026-07-15","ref_decisions":["DEC-0040"]},{"id":"PLN-0106","file":"PLN-0106-migrate-common-consumers-to-provider-lookup.md","status":"open","created_at":"2026-07-15","updated_at":"2026-07-15","ref_decisions":["DEC-0040"]}],"lessons":[]}
+{"type":"discussion","id":"DSC-0054","status":"in_progress","ticket":"multi-frontend-provider-contract","title":"Introduzir provider completo de frontend","created_at":"2026-07-15","updated_at":"2026-07-15","tags":["compiler","compiler-general","studio","frontend","registry","multi-frontend"],"agendas":[{"id":"AGD-0057","file":"AGD-0057-multi-frontend-provider-contract.md","status":"accepted","created_at":"2026-07-15","updated_at":"2026-07-15"}],"decisions":[{"id":"DEC-0040","file":"DEC-0040-frontendprovider-explicito-como-contrato-de-frontend.md","status":"accepted","created_at":"2026-07-15","updated_at":"2026-07-15","ref_agenda":"AGD-0057"}],"plans":[{"id":"PLN-0103","file":"PLN-0103-specify-frontend-provider-and-registry-contract.md","status":"done","created_at":"2026-07-15","updated_at":"2026-07-15","ref_decisions":["DEC-0040"]},{"id":"PLN-0104","file":"PLN-0104-introduce-frontendprovider-registry-api.md","status":"done","created_at":"2026-07-15","updated_at":"2026-07-15","ref_decisions":["DEC-0040"]},{"id":"PLN-0105","file":"PLN-0105-wrap-pbs-frontend-as-explicit-provider.md","status":"done","created_at":"2026-07-15","updated_at":"2026-07-15","ref_decisions":["DEC-0040"]},{"id":"PLN-0106","file":"PLN-0106-migrate-common-consumers-to-provider-lookup.md","status":"open","created_at":"2026-07-15","updated_at":"2026-07-15","ref_decisions":["DEC-0040"]}],"lessons":[]}
 {"type":"discussion","id":"DSC-0053","status":"open","ticket":"pbs-lsp-call-and-type-hierarchy","title":"PBS LSP Call and Type Hierarchy","created_at":"2026-07-15","updated_at":"2026-07-15","tags":["studio","lsp","vscode","compiler-pbs","editor","call-hierarchy","type-hierarchy"],"agendas":[{"id":"AGD-0056","file":"AGD-0056-pbs-lsp-call-and-type-hierarchy.md","status":"open","created_at":"2026-07-15","updated_at":"2026-07-15"}],"decisions":[],"plans":[],"lessons":[]}
 {"type":"discussion","id":"DSC-0052","status":"open","ticket":"pbs-lsp-document-links","title":"PBS LSP Document Links","created_at":"2026-07-15","updated_at":"2026-07-15","tags":["studio","lsp","vscode","compiler-pbs","editor","document-links","imports"],"agendas":[{"id":"AGD-0055","file":"AGD-0055-pbs-lsp-document-links.md","status":"open","created_at":"2026-07-15","updated_at":"2026-07-15"}],"decisions":[],"plans":[],"lessons":[]}
 {"type":"discussion","id":"DSC-0051","status":"open","ticket":"pbs-lsp-diagnostics-ux","title":"PBS LSP Diagnostics UX","created_at":"2026-07-15","updated_at":"2026-07-15","tags":["studio","lsp","vscode","compiler-pbs","editor","diagnostics","ux"],"agendas":[{"id":"AGD-0054","file":"AGD-0054-pbs-lsp-diagnostics-ux.md","status":"open","created_at":"2026-07-15","updated_at":"2026-07-15"}],"decisions":[],"plans":[],"lessons":[]}

discussion/workflow/plans/PLN-0105-wrap-pbs-frontend-as-explicit-provider.md

@@ -2,7 +2,7 @@
 id: PLN-0105
 ticket: multi-frontend-provider-contract
 title: Wrap PBS frontend as explicit provider
-status: open
+status: done
 created: 2026-07-15
 ref_decisions: [DEC-0040]
 tags: [compiler, compiler-general, studio, frontend, registry, multi-frontend]

prometeu-app/build.gradle.kts

@@ -7,6 +7,8 @@ dependencies {
     implementation(project(":prometeu-infra"))
     implementation(project(":prometeu-lsp:prometeu-lsp-api"))
     implementation(project(":prometeu-lsp:prometeu-lsp-v1"))
+    implementation(project(":prometeu-compiler:frontends:prometeu-frontend-pbs"))
+    implementation(project(":prometeu-compiler:prometeu-frontend-registry"))
     implementation(project(":prometeu-packer:prometeu-packer-api"))
     implementation(project(":prometeu-packer:prometeu-packer-v1"))
     implementation(project(":prometeu-studio"))

prometeu-app/src/main/java/p/studio/AppContainer.java

@@ -2,6 +2,7 @@ package p.studio;
 
 import com.fasterxml.jackson.databind.ObjectMapper;
 import p.packer.Packer;
+import p.studio.compiler.FrontendRegistryService;
 import p.studio.lsp.api.LspServerLifecycle;
 import p.studio.lsp.events.StudioEventBus;
 import p.studio.lsp.events.StudioPackerEventAdapter;
@@ -24,6 +25,7 @@ public final class AppContainer implements Container {
     private final LspServerLifecycle lspServerLifecycle;
 
     public AppContainer() {
+        FrontendRegistryService.bootstrapDefaults();
         this.i18nService = new I18nService();
         this.themeService = new ThemeService();
         this.studioEventBus = new StudioEventBus();

prometeu-compiler/frontends/prometeu-frontend-pbs/src/main/java/p/studio/compiler/PBSFrontendProvider.java

@@ -0,0 +1,28 @@
+package p.studio.compiler;
+
+import p.studio.compiler.models.FrontendSpec;
+import p.studio.compiler.services.FrontendPhaseService;
+import p.studio.compiler.services.FrontendProvider;
+import p.studio.compiler.services.PBSFrontendPhaseService;
+
+public final class PBSFrontendProvider implements FrontendProvider {
+    private final FrontendPhaseService compiler;
+
+    public PBSFrontendProvider() {
+        this(new PBSFrontendPhaseService());
+    }
+
+    PBSFrontendProvider(final FrontendPhaseService compiler) {
+        this.compiler = compiler;
+    }
+
+    @Override
+    public FrontendSpec specification() {
+        return PBSDefinitions.PBS;
+    }
+
+    @Override
+    public FrontendPhaseService compiler() {
+        return compiler;
+    }
+}

prometeu-compiler/frontends/prometeu-frontend-pbs/src/test/java/p/studio/compiler/PBSFrontendProviderTest.java

@@ -0,0 +1,20 @@
+package p.studio.compiler;
+
+import org.junit.jupiter.api.Test;
+import p.studio.compiler.services.PBSFrontendPhaseService;
+
+import static org.junit.jupiter.api.Assertions.assertEquals;
+import static org.junit.jupiter.api.Assertions.assertFalse;
+import static org.junit.jupiter.api.Assertions.assertInstanceOf;
+
+class PBSFrontendProviderTest {
+
+    @Test
+    void shouldExposePbsSpecificationAndCompiler() {
+        final var provider = new PBSFrontendProvider();
+
+        assertEquals(PBSDefinitions.PBS.getLanguageId(), provider.specification().getLanguageId());
+        assertInstanceOf(PBSFrontendPhaseService.class, provider.compiler());
+        assertFalse(provider.languageService().isPresent());
+    }
+}

prometeu-compiler/prometeu-frontend-registry/src/main/java/p/studio/compiler/FrontendRegistryService.java

@@ -3,7 +3,6 @@ package p.studio.compiler;
 import p.studio.compiler.models.FrontendSpec;
 import p.studio.compiler.services.FrontendPhaseService;
 import p.studio.compiler.services.FrontendProvider;
-import p.studio.compiler.services.PBSFrontendPhaseService;
 
 import java.util.HashMap;
 import java.util.List;
@@ -14,7 +13,11 @@ public class FrontendRegistryService {
     private static final Map<String, FrontendProvider> FRONTEND_PROVIDERS = new HashMap<>();
 
     static {
-        register(new StaticFrontendProvider(PBSDefinitions.PBS, new PBSFrontendPhaseService()));
+        bootstrapDefaults();
+    }
+
+    public static void bootstrapDefaults() {
+        registerIfAbsent(new PBSFrontendProvider());
     }
 
     public static FrontendSpec getDefaultFrontendSpec() {
@@ -64,8 +67,7 @@ public class FrontendRegistryService {
         FRONTEND_PROVIDERS.put(languageId, provider);
     }
 
-    private record StaticFrontendProvider(
+    private static void registerIfAbsent(final FrontendProvider provider) {
-            FrontendSpec specification,
+        FRONTEND_PROVIDERS.putIfAbsent(provider.specification().getLanguageId(), provider);
-            FrontendPhaseService compiler) implements FrontendProvider {
     }
 }