diff --git a/.forgejo/workflows/build-push.yml b/.forgejo/workflows/build-push.yml
index 673d9cd..e0501f9 100644
--- a/.forgejo/workflows/build-push.yml
+++ b/.forgejo/workflows/build-push.yml
@@ -5,7 +5,7 @@ on:
     branches:
       - main
       - master
-      - 'ci/*'
+      - fix_robustness_dockerize_project
     tags:
       - 'v*'
 
diff --git a/Dockerfile b/Dockerfile
index 4e9a9a7..639045e 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -1,18 +1,22 @@
+# Use official lightweight Python base image
 FROM python:3.11-slim
 
+# Set working directory inside container
 WORKDIR /app
 
-# Prevent Python from writing .pyc files & buffer stdout/stderr
-ENV PYTHONDONTWRITEBYTECODE=1 \
-    PYTHONUNBUFFERED=1 \
-    PORT=8000 \
-    USER_AGENT="Phikipathia/1.0 (https://git.depeuter.dev/tdpeuter/2022ST-project-Phikipathia)"
-
+# Install Python dependencies first to leverage Docker layer caching
 COPY requirements.txt .
 RUN pip install --no-cache-dir -r requirements.txt
 
+# Copy application files
 COPY . .
 
+# Expose default port
 EXPOSE 8000
 
+# Set default environment variables
+ENV PORT=8000
+ENV USER_AGENT="Phikipathia/1.0 (Wikipedia Philosophy Path Visualizer; https://github.com/tdpeuter/2022ST-project-Phikipathia)"
+
+# Run Python HTTP server
 CMD ["python", "server.py"]
diff --git a/cgi-bin/scraper.py b/cgi-bin/scraper.py
index a7fe6ca..e48883e 100644
--- a/cgi-bin/scraper.py
+++ b/cgi-bin/scraper.py
@@ -18,7 +18,7 @@ import requests
 
 # Default HTTP User-Agent adhering to Wikimedia API policy
 DEFAULT_USER_AGENT = (
-    "Phikipathia/1.0 (https://git.depeuter.dev/tdpeuter/2022ST-project-Phikipathia; contact@phikipathia.org)"
+    "Phikipathia/1.0 (https://github.com/tdpeuter/2022ST-project-Phikipathia; contact@phikipathia.org)"
 )
 
 # Per-request HTTP timeout in seconds
diff --git a/docker-compose.yml b/docker-compose.yml
index 57d3d5c..37a64e3 100644
--- a/docker-compose.yml
+++ b/docker-compose.yml
@@ -10,7 +10,7 @@ services:
       - "${PORT:-8000}:8000"
     environment:
       - PORT=8000
-      - USER_AGENT=${USER_AGENT:-Phikipathia/1.0 (https://git.depeuter.dev/tdpeuter/2022ST-project-Phikipathia)}
+      - USER_AGENT=${USER_AGENT:-Phikipathia/1.0 (https://github.com/tdpeuter/2022ST-project-Phikipathia)}
     healthcheck:
       test: ["CMD-SHELL", "python -c 'import urllib.request; urllib.request.urlopen(\"http://localhost:8000/\")'"]
       interval: 30s
diff --git a/index.html b/index.html
index 48ee37d..388cda4 100644
--- a/index.html
+++ b/index.html
@@ -22,12 +22,7 @@
     <div class="form-row">
       <div class="form-group">
         <label for="taal">Taal: </label>
-        <select id="taal">
-          <option value="en" selected>en (English)</option>
-          <option value="nl">nl (Nederlands)</option>
-          <option value="fr">fr (Français)</option>
-          <option value="de">de (Deutsch)</option>
-        </select>
+        <input type="text" id="taal" placeholder="en" autocomplete="off" />
       </div>
       <div class="form-group">
         <label for="start">Startpagina: </label>
@@ -84,10 +79,6 @@
     bij <a href="https://en.wikipedia.org/wiki/Philosophy" target="_blank" rel="noopener">filosofie</a> uitkomt. Lees er
     <a href="https://en.wikipedia.org/wiki/Wikipedia:Getting_to_Philosophy" target="_blank" rel="noopener">hier</a> meer over.
   </p>
-  <p class="footer-meta">
-    Code bijgewerkt in 2026. Originele baseline:
-    <a href="https://git.depeuter.dev/tdpeuter/2022ST-project-Phikipathia/src/commit/5ed9fdf2c1eb71068a08256fd4bc46f47b7f1889" target="_blank" rel="noopener">bekijk originele code (commit 5ed9fdf)</a>.
-  </p>
   <small>© 2022 Tibo De Peuter</small>
 </footer>
 
diff --git a/index.js b/index.js
index 9351740..7059da0 100644
--- a/index.js
+++ b/index.js
@@ -357,10 +357,7 @@
     function init() {
         if (toevoegKnop) toevoegKnop.addEventListener('click', zoek);
         if (wisKnop) wisKnop.addEventListener('click', clearTree);
-        if (taal) {
-            taal.addEventListener('input', inputWaarschuwing);
-            taal.addEventListener('change', inputWaarschuwing);
-        }
+        if (taal) taal.addEventListener('input', inputWaarschuwing);
         if (einde) einde.addEventListener('input', inputWaarschuwing);
         if (errorDismiss) errorDismiss.addEventListener('click', hideError);
 
diff --git a/style.css b/style.css
index bd84e7a..b7566d6 100644
--- a/style.css
+++ b/style.css
@@ -101,18 +101,16 @@ main > .box:first-child {
     gap: 4px;
 }
 
-.form-group input[type="text"],
-.form-group select {
+.form-group input[type="text"] {
     padding: 3px 6px;
     border: 1px solid #a2a9b1;
     border-radius: 2px;
     font-size: 0.95em;
     font-family: sans-serif;
-    background-color: #ffffff;
 }
 
 #taal {
-    min-width: 9em;
+    width: 3.5em;
 }
 
 #start, #einde {