update personal bio and refine slide titles

index.md

@@ -78,6 +78,7 @@ section {
 
 **Michał Czechowski**
 - University Lecturer at DHBW Stuttgart & LFH Hannover
+- Employed at a dictionary publisher (PONS Langenscheidt GmbH)
 - 20+ years software engineering experience
 - FOSS transformation specialist
 - Polish-German background: generational experience with authoritarian control
@@ -305,11 +306,12 @@ h1 {
 }
 </style>
 
-# FOSS vs. "Open Source" vs. Proprietary
+# Who Controls Your Software?
+## FOSS vs. "Open Source" vs. Proprietary
 
 ---
 
-# Software Models Compared
+# Three Types of Software Explained
 
 * **Proprietary Software:**
   - Black box code, vendor control, only licenses
@@ -425,9 +427,7 @@ table {
   - Publishing Systems
 
 * **3. Kyū (green belt 🟢):**
-  - Cloud storage
-  - Self-hosting
-  - Complete sovereignty
+  - Cloud storage & Self-hosting
 
 ---