Add 'Who is this for' section to website and README

Co-authored-by: Ona <no-reply@ona.com>

Author: Siddhant-K-code

README.md

@@ -6,6 +6,10 @@ Concepts, workflows, and team practices for AI agent infrastructure. 10 parts, 3
 
 **Read online:** [agents.siddhantkhare.com](https://agents.siddhantkhare.com)
 
+## Who is this for?
+
+Written for engineering leaders and senior engineers adopting AI agents. Half the book covers decisions that don't require writing code: AI fatigue, the conductor model, adoption playbooks, governance, and measuring what matters. The technical chapters (context engineering, authorization, sandboxing, cost control) assume familiarity with how software systems work. Technical PMs and engineering managers will get full value. Non-technical readers will find roughly a third useful.
+
 ## Development
 
 ```bash

src/pages/index.astro

@@ -83,9 +83,12 @@ const totalChapters = allChapters.filter((c) => c.chapter).length;
         <span class="font-[var(--font-mono)] text-xs tracking-widest uppercase text-[var(--text-tertiary)] mb-4 block">
           /About
         </span>
-        <p class="text-[var(--text-secondary)] leading-relaxed max-w-xl">
+        <p class="text-[var(--text-secondary)] leading-relaxed max-w-xl mb-4">
           This book is for engineering leaders navigating the shift to AI-assisted development. It covers the decisions, trade-offs, and organizational patterns that determine whether AI agents become a force multiplier or a source of burnout. From context engineering to cost control, from authorization to adoption playbooks.
         </p>
+        <p class="text-sm text-[var(--text-tertiary)] leading-relaxed max-w-xl">
+          Written for engineering leaders and senior engineers adopting AI agents. Half the book covers decisions that don't require writing code: AI fatigue, the conductor model, adoption playbooks, governance, and measuring what matters. The technical chapters assume familiarity with how software systems work. Technical PMs and engineering managers will get full value. Non-technical readers will find roughly a third useful.
+        </p>
       </div>
     </section>