Address code review: add advisory comment on existsSync, improve test assertions

Co-authored-by: data-douser <70299490+data-douser@users.noreply.github.com>

Author: Copilot

server/src/prompts/workflow-prompts.ts

@@ -93,7 +93,9 @@ export function resolvePromptFilePath(
     };
   }
 
-  // Check existence on disk.
+  // Check existence on disk (advisory only — the resolved path is always
+  // returned so that downstream tools can attempt the operation themselves
+  // and surface their own errors).
   if (!existsSync(absolutePath)) {
     return {
       resolvedPath: absolutePath,

server/test/src/prompts/workflow-prompts.test.ts

@@ -1559,6 +1559,8 @@ describe('Workflow Prompts', () => {
       });
       const text = result.messages[0].content.text;
       expect(text).toContain('does not exist');
+      // Verify the warning contains the resolved absolute path
+      expect(text).toContain('nonexistent/query.ql');
     });
 
     it('document_codeql_query handler should include warning for nonexistent queryPath', async () => {
@@ -1569,6 +1571,7 @@ describe('Workflow Prompts', () => {
       });
       const text = result.messages[0].content.text;
       expect(text).toContain('does not exist');
+      expect(text).toContain('nonexistent/nowhere/query.ql');
     });
 
     it('workshop_creation_workflow handler should include warning for nonexistent queryPath', async () => {
@@ -1579,8 +1582,11 @@ describe('Workflow Prompts', () => {
       });
       const text = result.messages[0].content.text;
       expect(text).toContain('does not exist');
+      expect(text).toContain('missing/Workshop.ql');
     });
 
+    // Only the `database` parameter is a file path — sourceFiles, sourceFunction,
+    // and targetFunction are plain string identifiers (not paths on disk).
     it('tools_query_workflow handler should include warning for nonexistent database path', async () => {
       const handler = getRegisteredHandler(mockServer, 'tools_query_workflow');
       const result: PromptResult = await handler({
@@ -1589,6 +1595,7 @@ describe('Workflow Prompts', () => {
       });
       const text = result.messages[0].content.text;
       expect(text).toContain('does not exist');
+      expect(text).toContain('nonexistent/db');
     });
   });
 });