👷 change how we compute the migration progress

Issue: CLDSRV-860

Author: DarkIsDude

.github/scripts/count-async-functions.mjs

@@ -67,17 +67,21 @@ for (const sourceFile of project.getSourceFiles()) {
     }
 }
 
-const migrationPercent = totalFunctions > 0
+const asyncFunctionPercent = totalFunctions > 0
     ? ((asyncFunctions / totalFunctions) * 100).toFixed(1)
     : '0.0';
 
+const migrationPercent = (asyncFunctions + callbackFunctions) > 0
+    ? ((asyncFunctions / (asyncFunctions + callbackFunctions)) * 100).toFixed(1)
+    : '0.0';
+
 console.log('=== Async/Await Migration Progress ===');
 console.log(`Total functions:      ${totalFunctions}`);
-console.log(`Async functions:      ${asyncFunctions} (${migrationPercent}%)`);
+console.log(`Async functions:      ${asyncFunctions} (${asyncFunctionPercent}%)`);
 console.log(`Callback functions:   ${callbackFunctions}`);
 console.log(`Remaining .then():    ${thenChains}`);
 console.log('');
-console.log(`Migration: ${asyncFunctions}/${totalFunctions} functions (${migrationPercent}%)`);
+console.log(`Migration (trend):    ${asyncFunctions}/${asyncFunctions + callbackFunctions} (${migrationPercent}%)`);
 
 if (process.env.GITHUB_STEP_SUMMARY) {
     const { appendFileSync } = await import('node:fs');
@@ -87,9 +91,10 @@ if (process.env.GITHUB_STEP_SUMMARY) {
         `| Metric | Count |`,
         `|--------|-------|`,
         `| Total functions | ${totalFunctions} |`,
-        `| Async functions | ${asyncFunctions} (${migrationPercent}%) |`,
+        `| Async functions | ${asyncFunctions} (${asyncFunctionPercent}%) |`,
         `| Callback-style functions | ${callbackFunctions} |`,
         `| Remaining \`.then()\` chains | ${thenChains} |`,
+        `| Migration trend (async / (async + callback)) | ${asyncFunctions}/${asyncFunctions + callbackFunctions} (${migrationPercent}%) |`,
         '',
     ].join('\n'));
 }