Let me read more of the PDF to understand all chapters, and also check the current codebase.

Now let me read the remaining chapters from the PDF and also read the existing components.

Let me read the rest of the PDF to identify all chapters, and check what chapters already exist in pharma-data.

Let me find all chapters in the PDF and get the remaining data.

Now let me read the remaining PDF sections to identify all chapters.

Now I have a complete picture. The existing app has 7 chapters:

1. Pharmacokinetics
2. Pharmacodynamics
3. Autonomic Nervous System
4. Cholinergic Agonists
5. Cholinergic Antagonists
6. Adrenergic Agonists
7. Adrenergic Antagonists

From the PDF, I need to add these missing chapters: 8. Antibiotics - Cell Wall Inhibitors (Beta-Lactams, etc.) 9. Protein Synthesis Inhibitors (Aminoglycosides, Tetracyclines, Macrolides, etc.) 10. Quinolones, Folic Acid Antagonists & UTI Antiseptics 11. Antimycobacterial Drugs

The user also wants:

1. Search functionality across all chapters
2. Critical level added to MCQs (easy/medium/hard/critical)
3. AI chat that answers questions ONLY from the source material (PDF)

Let me set up the task plan and start building.

Let me first read the remaining PDF sections to cover the antibiotics chapters.

Now I have a comprehensive understanding of the entire PDF and codebase. Let me now read the remaining PDF sections to complete my chapter catalog.

Now I have a complete picture. The PDF contains these chapters not yet in the app:

1. Principles of Antimicrobial Therapy (page 106-115)
2. Cell Wall Inhibitors (Penicillins, Cephalosporins, Carbapenems, Vancomycin) (pages 115-130ish)
3. Protein Synthesis Inhibitors (Aminoglycosides, Tetracyclines, Macrolides, Chloramphenicol, etc.) (pages 130-147)
4. Quinolones, Folic Acid Antagonists & UTI Antiseptics (pages 148-165)
5. Antimycobacterial Drugs (pages 166-178)
6. Antifungal Drugs (pages 179+)

Let me now invoke the AI SDK skill since we need AI chat, then build everything.

Let me check the AI SDK examples for reference.

Now I have all the context I need. Let me start building. I'll create:

1. The new chapter data (antimicrobial chapters)
2. Update MCQ types for "critical" level
3. Add search functionality
4. Add AI chat component

Let me start with the data file additions and type updates, then the new components.

Now let me add the new chapters data. I'll append them before the closing ] of the chapters array.

Now let me update the quiz view to support the "critical" level and update the chapter grid icons.

Now let me update the quiz view to add the "critical" level, and create the search component.

Now let me add the Zap import to quiz-view since the autofix may not have caught it:

Good, Zap is already imported. Now let me create the search component and update the main page.

Now let me update the main page to include search and the AI chat button.

Now let me create the AI chat panel and the API route. Let me move to the AI chat task.

Now let me create the API route for AI chat and the chat panel component. The AI will be restricted to only answer from the source PDF content.

Now let me create the AI chat panel component: