new file: .dockerignore

new file:   .env.example
	new file:   Dockerfile
	new file:   app.py
	new file:   blueprints/__init__.py
	new file:   blueprints/auth.py
	new file:   blueprints/chat.py
	new file:   blueprints/context.py
	new file:   blueprints/documents.py
	new file:   blueprints/main.py
	new file:   config.py
	new file:   docker-compose.yml
	new file:   models/__init__.py
	new file:   models/chat_session.py
	new file:   models/document.py
	new file:   models/user.py
	new file:   requirements.txt
	new file:   services/__init__.py
	new file:   services/document_parser.py
	new file:   services/llm_service.py
	new file:   services/rag_service.py
	new file:   services/url_scraper.py
	new file:   static/css/style.css
	new file:   static/js/chat.js
	new file:   static/js/inline_chat.js
	new file:   static/js/main.js
	new file:   templates/base.html
	new file:   templates/document_view.html
	new file:   templates/index.html
	new file:   templates/login.html
	new file:   templates/register.html

services/document_parser.py

@@ -0,0 +1,32 @@
+import os
+import io
+
+
+def parse_document(file_path: str, file_type: str) -> str:
+    """Extract plain text from a document file."""
+    ext = file_type.lower().lstrip(".")
+
+    if ext == "txt" or ext == "md":
+        with open(file_path, "r", encoding="utf-8", errors="replace") as f:
+            return f.read()
+
+    if ext == "pdf":
+        return _parse_pdf(file_path)
+
+    if ext == "docx":
+        return _parse_docx(file_path)
+
+    raise ValueError(f"Unsupported file type: {ext}")
+
+
+def _parse_pdf(file_path: str) -> str:
+    from pdfminer.high_level import extract_text
+    text = extract_text(file_path)
+    return text or ""
+
+
+def _parse_docx(file_path: str) -> str:
+    from docx import Document
+    doc = Document(file_path)
+    paragraphs = [p.text for p in doc.paragraphs if p.text.strip()]
+    return "\n".join(paragraphs)