diff --git a/index.js b/index.js
index 24b864b..ccc8c1b 100644
--- a/index.js
+++ b/index.js
@@ -5,7 +5,7 @@ const { glob } = require("glob");
 const path = require("path");
 
 /**
- * Replaces specific placeholder strings within the provided content with corresponding dynamic values.
+ * Replaces placeholder strings in content with dynamic values.
  *
  * @param {string} content
  * @param {string} hostname
@@ -30,7 +30,7 @@ function replacePlaceholders(content, hostname) {
 }
 
 /**
- * Replaces placeholders in files matching a glob pattern.
+ * Replaces placeholders in files matched by glob.
  *
  * @param {string} pattern
  * @param {string} [prefix]
@@ -41,14 +41,12 @@ function readReplaceAndWriteFiles(pattern, prefix, hostname) {
   return new Promise((resolve, reject) => {
     const globPattern = prefix ? path.join(prefix, pattern) : pattern;
 
-    glob(globPattern, async (err, files) => {
-      if (err) {
-        return reject(err);
-      }
+    glob(globPattern, (err, files) => {
+      if (err) return reject(err);
 
       if (!files.length) {
         core.warning(
-          `No files matched for placeholder replacement with pattern: ${globPattern}`,
+          `No files matched for placeholder replacement: ${globPattern}`,
         );
         return resolve([]);
       }
@@ -56,71 +54,62 @@ function readReplaceAndWriteFiles(pattern, prefix, hostname) {
       core.info(`📝 Matched files for replacement:`);
       files.forEach((file) => core.info(`  - ${file}`));
 
-      let processPromises = [];
-
-      files.forEach((file) => {
-        core.info(`Replacing placeholders in file: ${file}`);
-        let processPromise = fs.promises
+      const promises = files.map((file) =>
+        fs.promises
           .readFile(file, "utf8")
           .then((content) => {
             content = replacePlaceholders(content, hostname);
             return fs.promises.writeFile(file, content);
-          });
+          })
+          .then(() => {
+            core.info(`Replaced placeholders in file: ${file}`);
+          }),
+      );
 
-        processPromises.push(processPromise);
-      });
-
-      try {
-        await Promise.all(processPromises);
-        core.info(`Replaced placeholders in ${files.length} file(s).`);
-        resolve(files);
-      } catch (processError) {
-        reject(processError);
-      }
+      Promise.all(promises)
+        .then(() => {
+          core.info(
+            `Successfully replaced placeholders in ${files.length} file(s).`,
+          );
+          resolve(files);
+        })
+        .catch(reject);
     });
   });
 }
 
 /**
- * Reads files matching a glob pattern into a dictionary.
+ * Reads files into a dictionary of key → content.
  *
  * @param {string} pattern
  * @param {string} prefix
  * @returns {Promise<Object>}
  */
 function readFilesIntoDict(pattern, prefix) {
-  const globPattern = prefix ? path.join(prefix, pattern) : pattern;
-
   return new Promise((resolve, reject) => {
+    const globPattern = prefix ? path.join(prefix, pattern) : pattern;
+
     glob(globPattern, (err, files) => {
-      if (err) {
-        return reject(err);
-      }
+      if (err) return reject(err);
 
       if (!files.length) {
-        core.warning(
-          `No files matched for upload with pattern: ${globPattern}`,
-        );
+        core.warning(`No files matched for upload: ${globPattern}`);
       } else {
         core.info(`📁 Matched files for upload:`);
         files.forEach((file) => core.info(`  - ${file}`));
       }
 
-      let fileDict = {};
-      let readPromises = [];
-
-      files.forEach((file) => {
-        let readPromise = fs.promises.readFile(file, "utf8").then((content) => {
+      const fileDict = {};
+      const readPromises = files.map((file) =>
+        fs.promises.readFile(file, "utf8").then((content) => {
           let key = file;
           if (prefix && file.startsWith(prefix)) {
             key = key.slice(prefix.length);
           }
           key = path.basename(key, path.extname(key));
           fileDict[key] = content;
-        });
-
-        readPromises.push(readPromise);
-      });
+        }),
+      );
 
       Promise.all(readPromises)
         .then(() => resolve(fileDict))
@@ -130,7 +119,7 @@ function readFilesIntoDict(pattern, prefix) {
 }
 
 /**
- * Validates the provided authentication credentials.
+ * Validates provided credentials.
  *
  * @param {string} token
  * @param {string} username
@@ -138,26 +127,17 @@ function readFilesIntoDict(pattern, prefix) {
  * @returns {string|null}
  */
 function validateAuthentication(token, username, password) {
-  if (token) {
-    if (username || password) {
-      return "Token is defined along with username and/or password.";
-    }
-  } else {
-    if (!username && !password) {
-      return "Neither token nor password and username are defined.";
-    }
-    if (username && !password) {
-      return "Username is defined but no password is provided.";
-    }
-    if (!username && password) {
-      return "Password is defined but no username is provided.";
-    }
+  if (token && (username || password)) {
+    return "Token is defined along with username and/or password.";
+  }
+  if (!token && (!username || !password)) {
+    return "Username and password must both be defined if token is not used.";
   }
   return null;
 }
 
 /**
- * Main execution logic for the Screeps upload action.
+ * Main logic for uploading code to Screeps.
  */
 function postCode() {
   core.info("🟢 Starting Screeps upload action...");
@@ -201,10 +181,7 @@ function postCode() {
     : Promise.resolve();
 
   return replacePromise
-    .then(() => {
-      core.info("✅ Placeholder replacement complete.");
-      return readFilesIntoDict(pattern, prefix);
-    })
+    .then(() => readFilesIntoDict(pattern, prefix))
     .then((files_to_push) => {
       const fileCount = Object.keys(files_to_push).length;
       core.info(`📦 Files prepared for upload: ${fileCount}`);
@@ -219,9 +196,6 @@ function postCode() {
         core.info(`  - ${key}`);
       });
 
-      core.info("🔐 Authentication:");
-      core.info(JSON.stringify(login_arguments, null, 2));
-
       const api = new ScreepsAPI(login_arguments);
 
       if (token) {
@@ -230,7 +204,7 @@ function postCode() {
           core.info(`✅ Code uploaded to branch '${branch}' using token.`);
         });
       } else {
-        core.info(`Logging in as user '${username}'...`);
+        core.info(`🔐 Logging in as user '${username}'...`);
         return api
           .auth(username, password, login_arguments)
           .then(() => api.code.set(branch, files_to_push))
@@ -239,10 +213,9 @@ function postCode() {
           });
       }
     });
-  core.info("✅ Done Screeps upload action...");
 }
 
-// Run the action and catch any errors
+// Kick off the process and ensure failures are surfaced
 postCode().catch((err) => {
   core.setFailed(err.message || err);
 });