Simplify to BYOK-only for Hugging Face — remove Stripe/subscriptions

All features (chat, exports, CPD records) now free for everyone.
Users bring their own Anthropic API key. Updated README with HF metadata.

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

README.md

@@ -1,106 +1,44 @@
-# PNA Assistant — Professional Nurse Advocate AI
+---
+title: PNA Assistant
+emoji: 👨🏾‍⚕️
+colorFrom: indigo
+colorTo: teal
+sdk: streamlit
+sdk_version: 1.35.0
+app_file: streamlit_app.py
+pinned: true
+license: apache-2.0
+short_description: AI guide to the A-EQUIP model for Professional Nurse Advocates
+---
 
-AI-powered educational tool for the A-EQUIP model and restorative clinical supervision.
+# 👨🏾‍⚕️ PNA Assistant — Professional Nurse Advocate AI
 
-**Stack:** Python · Streamlit · Claude claude-opus-4-6 · FAISS RAG · Stripe · FastAPI webhook · Docker · AWS EC2
+An educational AI assistant for nursing professionals learning the **A-EQUIP model** of clinical supervision and the **Professional Nurse Advocate (PNA)** role in NHS England.
 
-## Quick Start (local)
+**Free forever · BYOK · No data stored**
 
-```bash
-pip install -r requirements.txt
+---
 
-# Copy the A-EQUIP guide into assets/
-cp "Professional nurse advocate A-EQUIP model Guide.md" assets/aequip_guide.md
+## What it does
 
-streamlit run streamlit_app.py
-```
+- 🌿 **Restorative supervision** — Reflective conversations to process the emotional impact of clinical work
+- 📚 **A-EQUIP learning** — Guides you through all four functions (Restorative, Normative, Formative, PAQI)
+- 🔍 **Reflective frameworks** — Gibbs, Driscoll, Johns, SBAR support
+- 📄 **Supervision note export** — Structured notes for your NMC revalidation portfolio (.docx)
+- 📋 **CPD record export** — NMC-formatted continuing professional development log (.docx)
 
-## AWS Deployment
+## How to use
 
-```bash
-# 1. Launch EC2 t3.small (Ubuntu 22.04, eu-west-2)
-# 2. SSH in and install Docker
-sudo apt update && sudo apt install -y docker.io docker-compose-plugin curl
+1. Get a free API key at [console.anthropic.com](https://console.anthropic.com) (~£0.01 per conversation)
+2. Enter your key in the sidebar — it's used only for your session and never stored
+3. Start chatting about A-EQUIP, supervision, or your PNA practice
 
-# 3. Clone repo
-git clone https://github.com/Clinical-Quality-Artifical-Intelligence/Professional-Nurse-Advocate-Assistant
-cd Professional-Nurse-Advocate-Assistant
+## Clinical disclaimer
 
-# 4. Set up env
-cp .env.example .env
-nano .env   # fill in Stripe keys + webhook secret
+> This tool is for **educational purposes only**. It does not provide clinical advice, diagnosis, or treatment recommendations. It is not a replacement for human supervision or your employer's formal clinical governance processes.
 
-# 5. Copy the A-EQUIP guide
-cp "Professional nurse advocate A-EQUIP model Guide.md" assets/aequip_guide.md
+## Attribution
 
-# 6. Deploy
-docker compose up -d
+Contains public sector information licensed under the [Open Government Licence v3.0](https://www.nationalarchives.gov.uk/doc/open-government-licence/version/3/) — NHS England.
 
-# 7. SSL with Let's Encrypt
-sudo apt install -y certbot
-sudo certbot certonly --standalone -d pna.nursingcitizendevelopment.com
-
-# 8. Restart with SSL
-docker compose restart nginx
-```
-
-## Stripe Webhook Setup (5 minutes)
-
-After deploying to EC2:
-
-1. Stripe Dashboard → **Developers** → **Webhooks** → **Add endpoint**
-2. Endpoint URL: `https://pna.nursingcitizendevelopment.com/webhook`
-3. Events to listen for: `checkout.session.completed`
-4. Click **Add endpoint**, then reveal the **Signing secret**
-5. Copy the signing secret (starts `whsec_...`)
-6. SSH into EC2 and update `.env`:
-   ```bash
-   nano .env
-   # Set: STRIPE_WEBHOOK_SECRET=whsec_your_real_secret
-   docker compose restart pna-webhook
-   ```
-
-When a customer pays, the webhook:
-- Generates a `PNA-PRO-XXXXX` activation code
-- Emails it to the customer via Amazon SES
-- Logs it to `/app/codes.jsonl` inside the container
-
-### Amazon SES Setup (for automated emails)
-
-```bash
-# Verify your sending domain in SES console (AWS Console → SES → Verified identities)
-# Then attach an IAM role to the EC2 instance with ses:SendEmail permission
-# No access keys needed — uses the instance role automatically
-```
-
-Or check codes manually until SES is configured:
-```bash
-docker exec pna-webhook cat /app/codes.jsonl
-```
-
-## Subscription Tiers
-
-| Tier | Price | Features |
-|------|-------|---------|
-| Free | £0 | Chat with BYOK API key, unlimited conversations |
-| Pro | £9.99/month | + Supervision notes (.docx), CPD logs, session history |
-| Institution | £99/month | + Multi-user, custom branding, bulk CPD |
-
-## Environment Variables
-
-| Variable | Description |
-|----------|-------------|
-| `STRIPE_PRO_LINK` | Stripe Payment Link for Pro plan |
-| `STRIPE_INSTITUTION` | Stripe Payment Link for Institution plan |
-| `STRIPE_PUBLISHABLE_KEY` | Stripe public key (for future Stripe.js use) |
-| `STRIPE_SECRET_KEY` | Stripe secret key (future server-side use) |
-| `STRIPE_WEBHOOK_SECRET` | Webhook signing secret (`whsec_...`) |
-| `AWS_REGION` | AWS region for SES (default: `eu-west-2`) |
-| `SES_FROM_EMAIL` | Verified SES sender email |
-
-## Copyright
-
-A-EQUIP model guide content — Contains public sector information licensed under the
-[Open Government Licence v3.0](https://www.nationalarchives.gov.uk/doc/open-government-licence/version/3/) — NHS England.
-
-Application code — Apache 2.0 — © 2026 Lincoln Gombedza
+Built by [Lincoln Gombedza](https://nursingcitizendevelopment.com) · [Clinical Quality AI (CQAI)](https://github.com/Clinical-Quality-Artifical-Intelligence) · NMC Standards aligned

streamlit_app.py

@@ -1,16 +1,12 @@
 """
-Professional Nurse Advocate Assistant — SaaS Edition
+Professional Nurse Advocate Assistant
 Powered by Claude claude-opus-4-6 | A-EQUIP Model | NHS OGL v3.0
 
-Architecture:
-- BYOK (Bring Your Own Key) — user enters Anthropic API key (Free tier)
-- Pro subscription via Stripe — unlocks session history, exports, and CPD logging
-- AWS-ready: runs in Docker on EC2, auth via Cognito (Phase 2)
+BYOK — bring your own Anthropic API key. Free forever on Hugging Face.
 """
 
 import streamlit as st
 from datetime import date
-import os
 
 from pna.rag import PNAKnowledgeBase
 from pna.claude_client import stream_response, generate_supervision_note
@@ -25,11 +21,6 @@ st.set_page_config(
     initial_sidebar_state="expanded",
 )
 
-# ─── Stripe config (replace with your real Stripe Payment Links) ──────────────
-
-STRIPE_PRO_LINK    = os.getenv("STRIPE_PRO_LINK",    "https://buy.stripe.com/14A28t0P99Qmdph8v68og00")
-STRIPE_INSTITUTION = os.getenv("STRIPE_INSTITUTION",  "https://buy.stripe.com/9B63cxfK3d2y3OHbHi8og01")
-
 # ─── Custom CSS ──────────────────────────────────────────────────────────────
 
 st.markdown("""
@@ -61,17 +52,9 @@ html, body, [class*="css"] { font-family: 'Inter', sans-serif; }
     padding: 0.2rem 0.75rem;
     font-size: 0.8rem;
     margin-top: 0.75rem;
+    margin-right: 0.25rem;
 }
 
-.tier-card {
-    border: 2px solid #e5e7eb;
-    border-radius: 12px;
-    padding: 1.25rem;
-    text-align: center;
-    background: white;
-}
-.tier-card.pro { border-color: #4f63d2; }
-
 .disclaimer {
     background: #f8fafc;
     border: 1px solid #e2e8f0;
@@ -92,22 +75,19 @@ html, body, [class*="css"] { font-family: 'Inter', sans-serif; }
 </style>
 """, unsafe_allow_html=True)
 
-# ─── Session state defaults ───────────────────────────────────────────────────
+# ─── Session state ────────────────────────────────────────────────────────────
 
 defaults = {
     "messages": [],
     "api_key": "",
-    "subscription": "free",   # free | pro | institution
     "nurse_name": "",
     "session_started": None,
-    "rag_loaded": False,
-    "kb": None,
 }
 for k, v in defaults.items():
     if k not in st.session_state:
         st.session_state[k] = v
 
-# ─── Load RAG knowledge base (cached) ────────────────────────────────────────
+# ─── Load RAG knowledge base ──────────────────────────────────────────────────
 
 @st.cache_resource(show_spinner="Loading A-EQUIP knowledge base…")
 def load_knowledge_base():
@@ -119,17 +99,17 @@ kb = load_knowledge_base()
 
 with st.sidebar:
     st.markdown("### 👨🏾‍⚕️ PNA Assistant")
-    st.caption("A-EQUIP Model | Restorative Supervision")
+    st.caption("A-EQUIP Model · Restorative Supervision")
     st.divider()
 
     # ── API Key (BYOK) ────────────────────────────────────────────────────────
     st.markdown("#### 🔑 Your Anthropic API Key")
     api_key_input = st.text_input(
-        "Enter key to activate",
+        "Enter key to start chatting",
         type="password",
         value=st.session_state.api_key,
         placeholder="sk-ant-api03-...",
-        help="Your key is used only for this session. Never stored."
+        help="Used only for this session and never stored.",
     )
     if api_key_input:
         st.session_state.api_key = api_key_input
@@ -142,69 +122,38 @@ with st.sidebar:
 
     st.divider()
 
-    # ── Subscription ──────────────────────────────────────────────────────────
-    st.markdown("#### 💳 Subscription")
-    sub = st.session_state.subscription
-
-    if sub == "free":
-        st.info("**Free tier** — BYOK, unlimited chat")
-        st.markdown(
-            f"[⭐ Upgrade to Pro — £9.99/mo]({STRIPE_PRO_LINK})",
-            unsafe_allow_html=False,
-        )
-        with st.expander("What's in Pro?"):
-            st.markdown("""
-- 💾 Save session history
-- 📄 Download supervision notes (.docx)
-- 📋 NMC CPD log export (.docx)
-- 📧 Monthly PNA newsletter
-- 🏫 [Institution plan — £99/mo]({})
-""".format(STRIPE_INSTITUTION))
-        # Manual activation after Stripe payment
-        act_code = st.text_input("Activation code (from email after payment)")
-        if act_code and act_code.startswith("PNA-PRO-"):
-            st.session_state.subscription = "pro"
-            st.success("Pro activated! 🎉")
-            st.rerun()
-
-    elif sub in ("pro", "institution"):
-        label = "⭐ Pro" if sub == "pro" else "🏫 Institution"
-        st.success(f"{label} — Active")
-        if st.button("Manage subscription (Stripe)"):
-            st.markdown(f"[Open Stripe portal →]({STRIPE_PRO_LINK})")
+    # ── Your details ──────────────────────────────────────────────────────────
+    st.markdown("#### 📋 Your Details")
+    st.caption("Optional — used in supervision note exports.")
+    st.session_state.nurse_name = st.text_input(
+        "Your name",
+        value=st.session_state.nurse_name,
+        placeholder="e.g. Nurse Jane Smith",
+    )
+    cpd_hours = st.number_input(
+        "Session length (hours)",
+        min_value=0.5, max_value=8.0,
+        value=1.0, step=0.5,
+    )
 
     st.divider()
 
-    # ── Nurse info (Pro only) ─────────────────────────────────────────────────
-    if sub in ("pro", "institution"):
-        st.markdown("#### 📋 Your Details")
-        st.session_state.nurse_name = st.text_input(
-            "Your name (for CPD records)",
-            value=st.session_state.nurse_name,
-            placeholder="Nurse Jane Smith",
-        )
-        cpd_hours = st.number_input(
-            "Session length (hours)", min_value=0.5, max_value=8.0,
-            value=1.0, step=0.5
-        )
-        st.divider()
-
     # ── Session controls ──────────────────────────────────────────────────────
     st.markdown("#### 🔄 Session")
     col1, col2 = st.columns(2)
     with col1:
-        if st.button("🗑️ Clear chat", use_container_width=True):
+        if st.button("🗑️ Clear", use_container_width=True):
             st.session_state.messages = []
             st.session_state.session_started = None
             st.rerun()
     with col2:
-        if st.button("📋 New session", use_container_width=True):
+        if st.button("🆕 New", use_container_width=True):
             st.session_state.messages = []
             st.session_state.session_started = date.today().isoformat()
             st.rerun()
 
-    # ── Exports (Pro only) ────────────────────────────────────────────────────
-    if sub in ("pro", "institution") and st.session_state.messages:
+    # ── Exports ───────────────────────────────────────────────────────────────
+    if st.session_state.messages:
         st.divider()
         st.markdown("#### 📥 Export")
 
@@ -221,29 +170,23 @@ with st.sidebar:
 
         if "last_note" in st.session_state:
             note = st.session_state["last_note"]
-            st.text_area("Supervision note preview", note, height=200)
+            st.text_area("Preview", note, height=200)
 
             if HAS_DOCX:
-                docx_bytes = build_supervision_docx(
-                    note, st.session_state.nurse_name
-                )
+                docx_bytes = build_supervision_docx(note, st.session_state.nurse_name)
                 if docx_bytes:
                     st.download_button(
-                        "⬇️ Download as .docx",
+                        "⬇️ Supervision note (.docx)",
                         data=docx_bytes,
                         file_name=f"PNA_Supervision_{date.today()}.docx",
                         mime="application/vnd.openxmlformats-officedocument.wordprocessingml.document",
                         use_container_width=True,
                     )
 
-                cpd_bytes = build_cpd_docx(
-                    note,
-                    st.session_state.nurse_name,
-                    cpd_hours if "cpd_hours" in dir() else 1.0,
-                )
+                cpd_bytes = build_cpd_docx(note, st.session_state.nurse_name, cpd_hours)
                 if cpd_bytes:
                     st.download_button(
-                        "⬇️ Download CPD Record (.docx)",
+                        "⬇️ NMC CPD Record (.docx)",
                         data=cpd_bytes,
                         file_name=f"NMC_CPD_{date.today()}.docx",
                         mime="application/vnd.openxmlformats-officedocument.wordprocessingml.document",
@@ -268,17 +211,18 @@ with st.sidebar:
 
 # ─── Main content ─────────────────────────────────────────────────────────────
 
-# Hero header
 st.markdown("""
 <div class="hero-header">
     <h1>👨🏾‍⚕️ Professional Nurse Advocate Assistant</h1>
     <p>Your AI guide to the A-EQUIP model, restorative supervision, and quality improvement</p>
-    <span class="pill">🇬🇧 NHS England · A-EQUIP Model · NMC Standards</span>
+    <span class="pill">🇬🇧 NHS England · A-EQUIP Model</span>
+    <span class="pill">NMC Standards</span>
     <span class="pill">OGL v3.0</span>
 </div>
 """, unsafe_allow_html=True)
 
-# Welcome / quick start (only when no messages yet)
+# ── Welcome / quick start ─────────────────────────────────────────────────────
+
 if not st.session_state.messages:
     col1, col2, col3 = st.columns(3)
     with col1:
@@ -306,7 +250,6 @@ Get support developing your Personal Action for Quality Improvement.
         "Help me reflect on a challenging patient interaction using Gibbs cycle.",
         "What's the difference between the normative and formative functions?",
     ]
-
     cols = st.columns(2)
     for i, ex in enumerate(examples):
         with cols[i % 2]:
@@ -314,14 +257,13 @@ Get support developing your Personal Action for Quality Improvement.
                 st.session_state.messages.append({"role": "user", "content": ex})
                 st.rerun()
 
-# ─── Chat history ─────────────────────────────────────────────────────────────
+# ── Chat history ──────────────────────────────────────────────────────────────
 
 for msg in st.session_state.messages:
-    with st.chat_message(msg["role"],
-                         avatar="👩‍⚕️" if msg["role"] == "user" else "👨🏾‍⚕️"):
+    with st.chat_message(msg["role"], avatar="👩‍⚕️" if msg["role"] == "user" else "👨🏾‍⚕️"):
         st.markdown(msg["content"])
 
-# ─── Chat input ───────────────────────────────────────────────────────────────
+# ── Chat input ────────────────────────────────────────────────────────────────
 
 prompt = st.chat_input(
     "Ask me about A-EQUIP, restorative supervision, or the PNA role…",
@@ -335,21 +277,17 @@ if not st.session_state.api_key:
     )
 
 if prompt and st.session_state.api_key:
-    # Record session start time
     if st.session_state.session_started is None:
         st.session_state.session_started = date.today().isoformat()
 
-    # Add user message
     st.session_state.messages.append({"role": "user", "content": prompt})
     with st.chat_message("user", avatar="👩‍⚕️"):
         st.markdown(prompt)
 
-    # Get RAG context
     context = kb.search(prompt) if kb.index is not None else ""
 
-    # Stream response
     with st.chat_message("assistant", avatar="👨🏾‍⚕️"):
-        response_placeholder = st.empty()
+        placeholder = st.empty()
         full_response = ""
 
         try:
@@ -360,9 +298,9 @@ if prompt and st.session_state.api_key:
                 context=context,
             ):
                 full_response += chunk
-                response_placeholder.markdown(full_response + "▋")
+                placeholder.markdown(full_response + "▋")
 
-            response_placeholder.markdown(full_response)
+            placeholder.markdown(full_response)
 
         except Exception as e:
             err = str(e)
@@ -372,11 +310,9 @@ if prompt and st.session_state.api_key:
                 full_response = "⏳ Rate limit reached. Please wait a moment and try again."
             else:
                 full_response = f"❌ An error occurred: {err}"
-            response_placeholder.error(full_response)
+            placeholder.error(full_response)
 
-    st.session_state.messages.append(
-        {"role": "assistant", "content": full_response}
-    )
+    st.session_state.messages.append({"role": "assistant", "content": full_response})
 
 # ─── Footer ───────────────────────────────────────────────────────────────────
 
@@ -390,7 +326,8 @@ If you are experiencing a clinical emergency or safeguarding concern, follow you
 <br/><br/>
 <span class="ogl-notice">
 Contains public sector information licensed under the
-<a href="https://www.nationalarchives.gov.uk/doc/open-government-licence/version/3/" target="_blank">Open Government Licence v3.0</a> — NHS England.
+<a href="https://www.nationalarchives.gov.uk/doc/open-government-licence/version/3/" target="_blank">Open Government Licence v3.0</a>
+— NHS England.
 Built by <a href="https://nursingcitizendevelopment.com" target="_blank">Lincoln Gombedza</a> · CQAI ·
 <a href="https://github.com/Clinical-Quality-Artifical-Intelligence/Professional-Nurse-Advocate-Assistant" target="_blank">Open Source</a>
 </span>