fix(mcp): relax library id and name matching

- accept single-segment library ids like /whisper-rtx2080 returned by
  resolve-library-id in get-library-docs
- accept common owner-qualified aliases such as /mozempk/whisper-rtx2080
  when the indexed repo is stored as a single-segment name
- accept single-segment ids with explicit versions such as
  /whisper-rtx2080/v0.0.1
- relax resolve-library-id scoring across separator-only differences so
  queries like whisperrtx2080 still match whisper-rtx2080
- update MCP tool descriptions to document the accepted id formats

Validated with focused regression tests:
- TrueRefMcpToolsTest
- LibraryResolverTest

trueref-adapters/src/main/java/com/trueref/adapter/in/mcp/TrueRefMcpTools.java

@@ -10,6 +10,7 @@ import com.trueref.domain.port.in.IndexVersion;
 import com.trueref.domain.port.in.QueryCatalog;
 import com.trueref.domain.port.in.ResolveLibraryId;
 import com.trueref.domain.port.in.SearchLibraryDocs;
+import java.util.ArrayList;
 import java.util.Comparator;
 import java.util.List;
 import java.util.Optional;
@@ -64,8 +65,9 @@ public class TrueRefMcpTools {
             description =
                     "Resolves a package/product name to a trueref-compatible library ID and "
                             + "returns matching libraries. Context7-compatible. Each result "
-                            + "includes: Title, Context7-compatible library ID (format "
-                            + "/owner/repo[/version]), Description, Code Snippets, Versions, "
+                        + "includes: Title, Context7-compatible library ID (format "
+                        + "/project, /project/version, /owner/repo, or /owner/repo/version), "
+                        + "Description, Code Snippets, Versions, "
                             + "and a relevance Score.")
     public String resolveLibraryId(
             @ToolParam(
@@ -97,12 +99,14 @@ public class TrueRefMcpTools {
                     "Fetches up-to-date documentation for a library. You MUST call "
                             + "'resolve-library-id' first to obtain the exact library ID "
                             + "required to use this tool, UNLESS the user explicitly provides "
-                            + "a library ID in the format /org/project or /org/project/version.")
+                        + "a library ID in the format /project, /project/version, "
+                        + "/org/project, or /org/project/version.")
     public String getLibraryDocs(
             @ToolParam(
                             description =
                                     "Exact trueref-compatible library ID (format: "
-                                            + "/org/project or /org/project/version) "
+                                + "/project, /project/version, "
+                                + "/org/project, or /org/project/version) "
                                             + "retrieved from 'resolve-library-id'.")
                     String libraryId,
             @ToolParam(
@@ -117,22 +121,21 @@ public class TrueRefMcpTools {
                                     "Max number of tokens to return. Clamped to "
                                             + "[500, 50000]; defaults to 5000.")
                     @Nullable Integer tokens) {
-        ParsedId parsed = parseLibraryId(libraryId);
-        if (parsed == null) {
+        List<ParsedId> candidates = parseLibraryIdCandidates(libraryId);
+        if (candidates.isEmpty()) {
             return "Invalid libraryId: " + libraryId
-                    + ". Expected format: /org/project or /org/project/version.";
+                    + ". Expected format: /project, /project/version, "
+                    + "/org/project, or /org/project/version.";
         }
 
-        Optional<Repository> repoOpt = catalog.listRepositories().stream()
-                .filter(r -> r.name().equalsIgnoreCase(parsed.repoName()))
-                .findFirst();
-        if (repoOpt.isEmpty()) {
+        ResolvedLibrary resolved = resolveLibrary(catalog.listRepositories(), candidates);
+        if (resolved == null) {
             return "No matching library found for ID: " + libraryId;
         }
-        Repository repo = repoOpt.get();
+        Repository repo = resolved.repo();
         List<Version> versions = catalog.listVersions(repo.id());
 
-        SelectedVersion selected = selectVersion(repo, versions, parsed.version());
+        SelectedVersion selected = selectVersion(repo, versions, resolved.version());
         if (selected.searchTarget() == null) {
             return "No indexed version available for /" + repo.name()
                     + ". Indexing has been enqueued; retry in ~"
@@ -278,20 +281,57 @@ public class TrueRefMcpTools {
         return sb.toString();
     }
 
-    static @Nullable ParsedId parseLibraryId(String raw) {
-        if (raw == null || raw.isBlank()) return null;
-        String s = raw.startsWith("/") ? raw.substring(1) : raw;
+    static List<ParsedId> parseLibraryIdCandidates(String raw) {
+        if (raw == null || raw.isBlank()) return List.of();
+        String s = raw.strip();
+        s = s.startsWith("/") ? s.substring(1) : s;
         String[] parts = s.split("/");
+        for (String part : parts) {
+            if (part.isBlank()) return List.of();
+        }
+        if (parts.length == 1) {
+            return List.of(new ParsedId(parts[0], null));
+        }
         if (parts.length == 2) {
-            return new ParsedId(parts[0] + "/" + parts[1], null);
+            return dedupeCandidates(
+                    new ParsedId(parts[0] + "/" + parts[1], null),
+                    new ParsedId(parts[1], null),
+                    new ParsedId(parts[0], parts[1]));
         }
         if (parts.length == 3) {
-            return new ParsedId(parts[0] + "/" + parts[1], parts[2]);
+            return dedupeCandidates(
+                    new ParsedId(parts[0] + "/" + parts[1], parts[2]),
+                    new ParsedId(parts[1], parts[2]));
+        }
+        return List.of();
+    }
+
+    private static List<ParsedId> dedupeCandidates(ParsedId... candidates) {
+        List<ParsedId> result = new ArrayList<>();
+        for (ParsedId candidate : candidates) {
+            if (!result.contains(candidate)) {
+                result.add(candidate);
+            }
+        }
+        return List.copyOf(result);
+    }
+
+    private static @Nullable ResolvedLibrary resolveLibrary(
+            List<Repository> repositories, List<ParsedId> candidates) {
+        for (ParsedId candidate : candidates) {
+            Optional<Repository> repo = repositories.stream()
+                    .filter(r -> r.name().equalsIgnoreCase(candidate.repoName()))
+                    .findFirst();
+            if (repo.isPresent()) {
+                return new ResolvedLibrary(repo.get(), candidate.version());
+            }
         }
         return null;
     }
 
     record ParsedId(String repoName, @Nullable String version) {}
 
+    private record ResolvedLibrary(Repository repo, @Nullable String version) {}
+
     private record SelectedVersion(@Nullable Version searchTarget, @Nullable String banner) {}
 }

trueref-adapters/src/test/java/com/trueref/adapter/in/mcp/TrueRefMcpToolsTest.java

@@ -0,0 +1,90 @@
+package com.trueref.adapter.in.mcp;
+
+import static org.assertj.core.api.Assertions.assertThat;
+import static org.mockito.Mockito.mock;
+
+import com.trueref.application.resolve.LibraryResolver;
+import com.trueref.domain.model.Repository;
+import com.trueref.domain.model.RepositoryId;
+import com.trueref.domain.model.Version;
+import com.trueref.domain.model.VersionId;
+import com.trueref.domain.model.VersionStatus;
+import com.trueref.domain.port.in.IndexVersion;
+import com.trueref.domain.port.in.QueryCatalog;
+import com.trueref.domain.port.in.ResolveLibraryId;
+import com.trueref.domain.port.in.SearchLibraryDocs;
+import com.trueref.domain.port.out.RepositoryStore;
+import java.time.Duration;
+import java.time.Instant;
+import java.util.List;
+import java.util.Optional;
+import org.junit.jupiter.api.Test;
+
+class TrueRefMcpToolsTest {
+
+    @Test
+    void getLibraryDocsAcceptsIdsReturnedByResolveAndCommonOwnerQualifiedVariants() {
+        Repository repo = repository("whisper-rtx2080");
+        Version version = indexedVersion(repo.id(), "v0.0.1", 206);
+
+        QueryCatalog catalog = new QueryCatalog() {
+            @Override
+            public List<Repository> listRepositories() {
+                return List.of(repo);
+            }
+
+            @Override
+            public Optional<Repository> findRepository(RepositoryId id) {
+                return Optional.of(repo);
+            }
+
+            @Override
+            public List<Version> listVersions(RepositoryId repoId) {
+                return List.of(version);
+            }
+        };
+
+        SearchLibraryDocs search = query -> new SearchLibraryDocs.Result(List.of(), 0);
+        LibraryResolver libraryResolver = new LibraryResolver(mock(RepositoryStore.class), mock(IndexVersion.class));
+        TrueRefMcpTools tools = new TrueRefMcpTools(
+                query -> new ResolveLibraryId.Result(List.of()),
+                libraryResolver,
+                catalog,
+                search,
+                mock(IndexVersion.class),
+                new McpProperties(5000, 500, 50_000));
+
+        assertThat(tools.getLibraryDocs("/whisper-rtx2080", "install", 500)).contains("CODE SNIPPETS");
+        assertThat(tools.getLibraryDocs("/mozempk/whisper-rtx2080", "install", 500)).contains("CODE SNIPPETS");
+        assertThat(tools.getLibraryDocs("/whisper-rtx2080/v0.0.1", "install", 500)).contains("CODE SNIPPETS");
+    }
+
+    private static Repository repository(String name) {
+        Instant now = Instant.parse("2026-05-06T00:00:00Z");
+        return new Repository(
+                RepositoryId.random(),
+                name,
+                null,
+                "/tmp/" + name,
+                false,
+                List.of(),
+                1_000_000L,
+                Duration.ZERO,
+                10,
+                List.of(),
+                now,
+                now);
+    }
+
+    private static Version indexedVersion(RepositoryId repoId, String tag, int chunkCount) {
+        return new Version(
+                VersionId.random(),
+                repoId,
+                tag,
+                "deadbeef",
+                VersionStatus.INDEXED,
+                Instant.parse("2026-05-06T00:00:00Z"),
+                chunkCount,
+                null);
+    }
+}

trueref-adapters/src/test/java/com/trueref/application/resolve/LibraryResolverTest.java

@@ -0,0 +1,67 @@
+package com.trueref.application.resolve;
+
+import static org.assertj.core.api.Assertions.assertThat;
+import static org.mockito.Mockito.mock;
+import static org.mockito.Mockito.when;
+
+import com.trueref.domain.model.Repository;
+import com.trueref.domain.model.RepositoryId;
+import com.trueref.domain.model.Version;
+import com.trueref.domain.model.VersionStatus;
+import com.trueref.domain.port.in.IndexVersion;
+import com.trueref.domain.port.in.ResolveLibraryId;
+import com.trueref.domain.port.out.RepositoryStore;
+import java.time.Duration;
+import java.time.Instant;
+import java.util.List;
+import org.junit.jupiter.api.Test;
+
+class LibraryResolverTest {
+
+    @Test
+    void resolveMatchesCollapsedNamesAcrossSeparators() {
+        Repository repo = repository("whisper-rtx2080");
+        Version version = version(repo.id(), "v0.0.1", 206);
+        RepositoryStore store = mock(RepositoryStore.class);
+        when(store.findAll()).thenReturn(List.of(repo));
+        when(store.findVersionsByRepo(repo.id())).thenReturn(List.of(version));
+
+        LibraryResolver resolver = new LibraryResolver(store, mock(IndexVersion.class));
+
+        ResolveLibraryId.Result result = resolver.resolve(new ResolveLibraryId.Query("whisperrtx2080", null, null));
+
+        assertThat(result.matches()).singleElement().satisfies(match -> {
+            assertThat(match.libraryId()).isEqualTo("/whisper-rtx2080");
+            assertThat(match.score()).isGreaterThanOrEqualTo(0.9);
+        });
+    }
+
+    private static Repository repository(String name) {
+        Instant now = Instant.parse("2026-05-06T00:00:00Z");
+        return new Repository(
+                RepositoryId.random(),
+                name,
+                null,
+                "/tmp/" + name,
+                false,
+                List.of(),
+                1_000_000L,
+                Duration.ZERO,
+                10,
+                List.of(),
+                now,
+                now);
+    }
+
+    private static Version version(RepositoryId repoId, String tag, int chunkCount) {
+        return new Version(
+                com.trueref.domain.model.VersionId.random(),
+                repoId,
+                tag,
+                "deadbeef",
+                VersionStatus.INDEXED,
+                Instant.parse("2026-05-06T00:00:00Z"),
+                chunkCount,
+                null);
+    }
+}