fix: align show/snippet integration tests with lookup tiers

Lone name:Token without wildcards is fast-tier equality; substring and
multi-field queries use slow-tier LIKE (kind:class name:Auth).

Author: SutuSebastian

src/application/http-server.test.ts

@@ -469,7 +469,7 @@ describe("http-server — POST /tool/{other tools}", () => {
     expect(r.json.matches[0]).toHaveProperty("missing");
   });
 
-  it("show with query returns field-qualified matches", async () => {
+  it("show with query fast tier returns exact name matches", async () => {
     const db = openDb();
     try {
       db.run(
@@ -480,7 +480,28 @@ describe("http-server — POST /tool/{other tools}", () => {
       closeDb(db);
     }
     serverHandle = await startServer();
-    const r = await postTool(serverHandle.port, "show", { query: "name:Auth" });
+    const r = await postTool(serverHandle.port, "show", {
+      query: "name:AuthService",
+    });
+    expect(r.status).toBe(200);
+    expect(r.json.matches).toHaveLength(1);
+    expect(r.json.matches[0].name).toBe("AuthService");
+  });
+
+  it("show with query returns field-qualified substring matches", async () => {
+    const db = openDb();
+    try {
+      db.run(
+        `INSERT INTO symbols (file_path, name, kind, line_start, line_end, signature, doc_comment)
+         VALUES ('src/a.ts', 'AuthService', 'class', 1, 1, 'class AuthService', NULL)`,
+      );
+    } finally {
+      closeDb(db);
+    }
+    serverHandle = await startServer();
+    const r = await postTool(serverHandle.port, "show", {
+      query: "kind:class name:Auth",
+    });
     expect(r.status).toBe(200);
     expect(r.json.matches).toHaveLength(1);
     expect(r.json.matches[0].name).toBe("AuthService");
@@ -518,7 +539,7 @@ describe("http-server — POST /tool/{other tools}", () => {
     }
     serverHandle = await startServer();
     const r = await postTool(serverHandle.port, "snippet", {
-      query: "name:Auth",
+      query: "kind:class name:Auth",
     });
     expect(r.status).toBe(200);
     expect(r.json.matches).toHaveLength(1);

src/application/mcp-server.test.ts

@@ -1607,14 +1607,31 @@ describe("MCP server — show + snippet tools", () => {
     }
   });
 
+  it("show with query fast tier returns exact name matches", async () => {
+    seedSymbol({ file: "src/a.ts", name: "AuthService", kind: "class" });
+    seedSymbol({ file: "src/b.ts", name: "Other", kind: "class" });
+    const { client, server } = await makeClient();
+    try {
+      const r = await client.callTool({
+        name: "show",
+        arguments: { query: "name:AuthService" },
+      });
+      const json = readJson(r);
+      expect(json.matches).toHaveLength(1);
+      expect(json.matches[0].name).toBe("AuthService");
+    } finally {
+      await server.close();
+    }
+  });
+
   it("show with query field search returns substring matches", async () => {
     seedSymbol({ file: "src/a.ts", name: "AuthService", kind: "class" });
     seedSymbol({ file: "src/b.ts", name: "Other", kind: "class" });
     const { client, server } = await makeClient();
     try {
       const r = await client.callTool({
         name: "show",
-        arguments: { query: "name:Auth" },
+        arguments: { query: "kind:class name:Auth" },
       });
       const json = readJson(r);
       expect(json.matches).toHaveLength(1);
@@ -1637,7 +1654,7 @@ describe("MCP server — show + snippet tools", () => {
     try {
       const r = await client.callTool({
         name: "snippet",
-        arguments: { query: "name:Auth" },
+        arguments: { query: "kind:class name:Auth" },
       });
       const json = readJson(r);
       expect(json.matches).toHaveLength(1);