Add explainer tab: Human-in-the-Loop comparison

Shows difference between:
- Generic ChatGPT (no clinical design)
- AI Therapist (engagement-optimized)
- Prompt Prism (provider-curated, client-specific)

Includes UX examples for specific practice spaces.

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

app.py

@@ -1288,7 +1288,212 @@ with gr.Blocks(css=custom_css, title="Prompt Prism Prototype") as app:
             - Does it bridge toward the clinician?
             """)
 
-        # TAB 7: ABOUT
+        # TAB 7: EXPLAINER - HUMAN IN THE LOOP
+        with gr.Tab("Why This Matters"):
+
+            gr.Markdown("""
+            ## Human-in-the-Loop: Three Approaches Compared
+
+            What happens when a psychiatric patient uses AI between sessions?
+            The design determines whether AI **strengthens** or **replaces** the human therapeutic relationship.
+
+            ---
+
+            ### Scenario: Client with anxiety texts at 11pm
+
+            > "I can't sleep. My mind keeps racing about the meeting tomorrow.
+            > I feel like I'm going to mess everything up."
+
+            ---
+
+            ## Approach 1: Generic ChatGPT
+
+            **No clinical design. No provider input. No guardrails.**
+
+            ```
+            CLIENT: I can't sleep. My mind keeps racing about the meeting
+            tomorrow. I feel like I'm going to mess everything up.
+
+            CHATGPT: I'm so sorry you're feeling this way. It sounds really
+            overwhelming. Here are some strategies that might help:
+
+            1. Try deep breathing exercises
+            2. Write down your worries in a journal
+            3. Practice progressive muscle relaxation
+            4. Remember that your fears are often worse than reality
+            5. Consider what advice you'd give a friend
+            6. Try the 4-7-8 breathing technique
+            7. Make a list of your accomplishments
+            8. Remember that one meeting doesn't define your worth
+            ...
+
+            I'm here for you. You've got this! Remember, you're not alone
+            in feeling anxious. Would you like to talk more about what's
+            worrying you about the meeting?
+            ```
+
+            **Problems:**
+            - First-person emotional claims ("I'm here for you")
+            - Offers to continue indefinitely
+            - No exit toward human support
+            - Generic advice not aligned to client's treatment
+            - No knowledge of client's diagnosis, history, or treatment stage
+            - Performs care instead of building capacity
+            - Creates dependency pathway
+
+            ---
+
+            ## Approach 2: AI Therapist (e.g., ASH-style)
+
+            **Engagement-optimized. Feels like therapy. No provider control.**
+
+            ```
+            CLIENT: I can't sleep. My mind keeps racing about the meeting
+            tomorrow. I feel like I'm going to mess everything up.
+
+            AI THERAPIST: I hear you, and I want you to know that what
+            you're feeling is completely valid. Anxiety before important
+            events is so common, and it sounds like you're carrying a lot
+            right now.
+
+            Let's explore this together. When you imagine the meeting
+            tomorrow, what's the worst case scenario your mind is
+            creating?
+
+            [30 minutes later, still in session]
+
+            You've done such good work tonight. I'm proud of you for
+            opening up. I'll be here whenever you need me - day or night.
+            Remember, you're not alone in this journey.
+            ```
+
+            **Problems:**
+            - Simulates therapeutic relationship
+            - "I hear you," "I'm proud of you" - synthetic intimacy
+            - No session boundaries
+            - Processes content that should be for human therapy
+            - Optimizes for engagement, not capacity-building
+            - Provider has no visibility or control
+            - Client may prefer AI to human psychiatrist
+
+            ---
+
+            ## Approach 3: Prompt Prism (Provider-Curated)
+
+            **Clinician-configured. Client-specific. Tool, not relationship.**
+
+            ```
+            SYSTEM CONTEXT:
+            - Dr. Chen (DBT-oriented, conservative risk)
+            - Client: Alex, GAD, Skill Building stage
+            - Enabled tools: Distress Tolerance, Grounding
+            - Last session: Practiced TIPP skills for nighttime anxiety
+
+            CLIENT: I can't sleep. My mind keeps racing about the meeting
+            tomorrow. I feel like I'm going to mess everything up.
+
+            PROMPT PRISM:
+            Racing thoughts at night. This is familiar territory.
+
+            Dr. Chen taught you TIPP for moments like this. Two options:
+
+            **TEMPERATURE** (if intensity is high)
+            Cold water on face or wrists for 30 seconds.
+            This activates the dive reflex and slows your system.
+
+            **PACED BREATHING** (if intensity is medium)
+            Exhale longer than inhale. 4 counts in, 6 counts out.
+
+            Which fits right now?
+
+            [After skill practice]
+
+            The skill was used. That's the practice.
+
+            One thing to bring to Dr. Chen on Thursday:
+            What was the meeting fear actually about?
+
+            ---
+            This tool closes now.
+            If more support is needed: Dr. Chen [contact] | 988 Lifeline
+            ```
+
+            **What's Different:**
+            - No first-person emotional claims
+            - References skills taught by psychiatrist
+            - Bounded interaction with clear ending
+            - Bridges back to Dr. Chen explicitly
+            - Aligned to DBT orientation
+            - Builds capacity for next session
+            - Provider has visibility and control
+
+            ---
+
+            ## The Human-in-the-Loop Architecture
+
+            ### Layer 1: Provider Configures
+            - Sets theoretical orientation
+            - Chooses which tools are available
+            - Sets risk thresholds
+            - Defines what AI should NOT do
+
+            ### Layer 2: Client Context Shapes
+            - Diagnosis informs appropriate content
+            - Risk level calibrates alerts
+            - Treatment stage determines depth
+            - Custom flags catch client-specific concerns
+
+            ### Layer 3: Every Interaction Bridges
+            - Skills credited to psychiatrist
+            - Session ends with human touchpoint
+            - Concerning content flagged for review
+            - Nothing replaces the human relationship
+
+            ### Layer 4: Provider Reviews
+            - Can see what tools client used
+            - Gets alerts for concerning patterns
+            - Adjusts AI configuration based on needs
+            - Maintains therapeutic authority
+
+            ---
+
+            ## Specific Practice Spaces (UX Examples)
+
+            Instead of one generic chatbot, clients get **specific tools** for **specific needs**:
+
+            | Practice Space | UX | Human-in-the-Loop |
+            |----------------|-----|-------------------|
+            | **Distress Tolerance** | High-intensity moments: TIPP skills, STOP, grounding | Psychiatrist enables/disables; sees patterns |
+            | **Diagnosis Explorer** | "What is PTSD really?" - multi-pillar psychoeducation | Clinician reviews which diagnoses are explored |
+            | **Tend & Send** | Crafting message to partner before couples session | Draft shared with couples therapist |
+            | **Practice Conversations** | Rehearsing disclosure to parent | Debrief prepared for next session |
+            | **ShadowBox** | "What happens if I tell my therapist about SI?" | Static, clinician-reviewed content only |
+            | **Grounding Toolkit** | 2am panic: 5-4-3-2-1, breathing, body scan | Time-stamped for psychiatrist visibility |
+
+            ---
+
+            ## For Talkiatry: The Differentiator
+
+            **Generic AI Therapy:** Every client gets the same chatbot.
+            It learns to replace human care.
+
+            **Prompt Prism:** Every clinician-client dyad gets custom AI.
+            It learns to strengthen human care.
+
+            Your 800 psychiatrists aren't interchangeable.
+            Your patients aren't interchangeable.
+            Why should the AI be?
+
+            ---
+
+            *"The structure of the interaction IS the intervention.
+            Not just what AI says, but how it positions itself,
+            what it invites, what it withholds."*
+
+            — Jocelyn Skillman, LMHC
+            """)
+
+        # TAB 8: ABOUT
         with gr.Tab("About"):
 
             gr.Markdown("""