diff --git a/backend/app/api/v1/__init__.py b/backend/app/api/v1/__init__.py
index 0353aa3..da6fd48 100644
--- a/backend/app/api/v1/__init__.py
+++ b/backend/app/api/v1/__init__.py
@@ -2,9 +2,17 @@
 
 from fastapi import APIRouter
 
+from app.api.v1.auth import router as auth_router
+from app.api.v1.documents import router as documents_router
 from app.api.v1.health import router as health_router
 
 router = APIRouter(prefix="/api/v1")
 
+# Auth
+router.include_router(auth_router)
+
+# Documents
+router.include_router(documents_router)
+
 # Health (unauthenticated)
 router.include_router(health_router)
diff --git a/backend/app/api/v1/auth.py b/backend/app/api/v1/auth.py
new file mode 100644
index 0000000..c05c534
--- /dev/null
+++ b/backend/app/api/v1/auth.py
@@ -0,0 +1,124 @@
+"""Authentication endpoints."""
+
+from fastapi import APIRouter, Depends, HTTPException, Request, Response
+from sqlalchemy.orm import Session
+
+from app.auth.dependencies import get_current_user, verify_csrf
+from app.auth.hashing import hash_password, verify_password
+from app.auth.rate_limit import check_rate_limit, clear_attempts, record_failed_attempt
+from app.auth.session import clear_session, create_session, verify_session
+from app.config import settings
+from app.db import get_db
+from app.models.settings import Settings
+from app.schemas.auth import AuthStatusResponse, ChangePasswordRequest, LoginRequest, SetupRequest
+
+router = APIRouter(prefix="/auth", tags=["auth"])
+
+
+def get_client_ip(request: Request) -> str:
+    """Helper to extract client IP for rate limiting."""
+    forwarded = request.headers.get("X-Forwarded-For")
+    if forwarded:
+        return forwarded.split(",")[0].strip()
+    return request.client.host if request.client else "unknown"
+
+
+@router.get("/status", response_model=AuthStatusResponse)
+def get_auth_status(request: Request, db: Session = Depends(get_db)) -> AuthStatusResponse:
+    """Check if app requires setup and if user is logged in."""
+    app_settings = db.query(Settings).first()
+    if not app_settings:
+        app_settings = Settings()
+        db.add(app_settings)
+        db.commit()
+    
+    setup_required = app_settings.password_hash is None
+    
+    token = request.cookies.get(settings.COOKIE_NAME)
+    logged_in = False
+    if token:
+        user_id = verify_session(token)
+        if user_id is not None:
+            logged_in = True
+            
+    return AuthStatusResponse(setupRequired=setup_required, loggedIn=logged_in)
+
+
+@router.post("/setup", dependencies=[Depends(verify_csrf)])
+def setup_password(
+    data: SetupRequest, 
+    response: Response, 
+    db: Session = Depends(get_db)
+) -> dict[str, str]:
+    """First-run setup."""
+    app_settings = db.query(Settings).first()
+    if app_settings and app_settings.password_hash:
+        raise HTTPException(status_code=409, detail="Password already set")
+        
+    if not app_settings:
+        app_settings = Settings()
+        db.add(app_settings)
+        
+    app_settings.password_hash = hash_password(data.password)
+    db.commit()
+    
+    # Log them in automatically
+    create_session(response)
+    return {"status": "ok"}
+
+
+@router.post("/login", dependencies=[Depends(verify_csrf)])
+def login(
+    request: Request,
+    data: LoginRequest,
+    response: Response,
+    db: Session = Depends(get_db)
+) -> dict[str, str]:
+    """Validate password and issue session cookie."""
+    ip = get_client_ip(request)
+    check_rate_limit(ip)
+    
+    app_settings = db.query(Settings).first()
+    if not app_settings or not app_settings.password_hash:
+        record_failed_attempt(ip)
+        raise HTTPException(status_code=401, detail="Invalid credentials")
+        
+    if not verify_password(app_settings.password_hash, data.password):
+        record_failed_attempt(ip)
+        raise HTTPException(status_code=401, detail="Invalid credentials")
+        
+    clear_attempts(ip)
+    create_session(response)
+    return {"status": "ok"}
+
+
+@router.post("/logout", dependencies=[Depends(verify_csrf)])
+def logout(response: Response) -> dict[str, str]:
+    """Clear session cookie."""
+    clear_session(response)
+    return {"status": "ok"}
+
+
+@router.put("/password", dependencies=[Depends(verify_csrf), Depends(get_current_user)])
+def change_password(
+    request: Request,
+    data: ChangePasswordRequest,
+    db: Session = Depends(get_db)
+) -> dict[str, str]:
+    """Change an existing password."""
+    ip = get_client_ip(request)
+    check_rate_limit(ip)
+    
+    app_settings = db.query(Settings).first()
+    if not app_settings or not app_settings.password_hash:
+        raise HTTPException(status_code=400, detail="Setup required first")
+        
+    if not verify_password(app_settings.password_hash, data.current_password):
+        record_failed_attempt(ip)
+        raise HTTPException(status_code=401, detail="Invalid current password")
+        
+    clear_attempts(ip)
+    app_settings.password_hash = hash_password(data.new_password)
+    db.commit()
+    
+    return {"status": "ok"}
diff --git a/backend/app/api/v1/documents.py b/backend/app/api/v1/documents.py
new file mode 100644
index 0000000..7e572b2
--- /dev/null
+++ b/backend/app/api/v1/documents.py
@@ -0,0 +1,221 @@
+"""Document management endpoints."""
+
+from fastapi import APIRouter, Depends, HTTPException, UploadFile, File, Query
+from fastapi.responses import FileResponse
+from sqlalchemy.orm import Session
+from sqlalchemy import desc
+from datetime import datetime, timezone
+
+from app.auth.dependencies import get_current_user, verify_csrf
+from app.db import get_db
+from app.models.document import Document
+from app.models.annotation_state import AnnotationState
+from app.models.version import Version
+from app.schemas.document import (
+    DocumentListResponse, DocumentMeta, BulkDeleteRequest, 
+    BulkRestoreRequest, DocumentUpdateRequest
+)
+from app.services.storage import save_upload_file, delete_pdf_file
+from app.services.thumbnails import generate_thumbnail, delete_thumbnail
+from app.config import settings
+
+router = APIRouter(
+    prefix="/documents", 
+    tags=["documents"],
+    dependencies=[Depends(get_current_user)]
+)
+
+
+@router.get("", response_model=DocumentListResponse)
+def list_documents(
+    query: str = "",
+    skip: int = Query(0, ge=0),
+    limit: int = Query(50, ge=1, le=100),
+    db: Session = Depends(get_db)
+):
+    """List non-trashed documents."""
+    q = db.query(Document).filter(Document.deleted_at.is_(None))
+    if query:
+        q = q.filter(Document.title.ilike(f"%{query}%"))
+        
+    total = q.count()
+    items = q.order_by(desc(Document.updated_at)).offset(skip).limit(limit).all()
+    
+    return DocumentListResponse(items=items, total=total)
+
+
+@router.get("/trash", response_model=DocumentListResponse)
+def list_trash(
+    skip: int = Query(0, ge=0),
+    limit: int = Query(50, ge=1, le=100),
+    db: Session = Depends(get_db)
+):
+    """List trashed documents."""
+    q = db.query(Document).filter(Document.deleted_at.is_not(None))
+    total = q.count()
+    items = q.order_by(desc(Document.deleted_at)).offset(skip).limit(limit).all()
+    return DocumentListResponse(items=items, total=total)
+
+
+@router.post("", dependencies=[Depends(verify_csrf)], response_model=DocumentMeta)
+async def upload_document(
+    file: UploadFile = File(...),
+    db: Session = Depends(get_db)
+):
+    """Upload a new PDF document."""
+    # Note: Starlette/FastAPI loads file into memory/spooled file.
+    # To truly enforce max size before reading we rely on Nginx and logic in storage.py.
+    # But checking size if available:
+    if file.size and file.size > settings.MAX_UPLOAD_MB * 1024 * 1024:
+        raise HTTPException(status_code=413, detail="File too large")
+        
+    file_id, size_bytes, page_count = await save_upload_file(file)
+    
+    # Generate thumbnail synchronously
+    generate_thumbnail(file_id)
+    
+    now = datetime.now(timezone.utc).isoformat()
+    doc = Document(
+        id=file_id,
+        title=file.filename or "Untitled",
+        original_filename=file.filename or "Untitled.pdf",
+        file_path=str(settings.PDF_STORAGE_PATH / f"{file_id}.pdf"),
+        page_count=page_count,
+        size_bytes=size_bytes,
+        created_at=now,
+        updated_at=now
+    )
+    db.add(doc)
+    db.commit()
+    db.refresh(doc)
+    return doc
+
+
+@router.get("/{id}", response_model=DocumentMeta)
+def get_document(id: str, db: Session = Depends(get_db)):
+    doc = db.query(Document).filter(Document.id == id).first()
+    if not doc:
+        raise HTTPException(status_code=404, detail="Document not found")
+    return doc
+
+
+@router.patch("/{id}", dependencies=[Depends(verify_csrf)], response_model=DocumentMeta)
+def update_document(id: str, update: DocumentUpdateRequest, db: Session = Depends(get_db)):
+    doc = db.query(Document).filter(Document.id == id).first()
+    if not doc:
+        raise HTTPException(status_code=404, detail="Document not found")
+        
+    if update.title is not None:
+        doc.title = update.title
+        
+    if update.in_trash is not None:
+        if update.in_trash:
+            doc.deleted_at = datetime.now(timezone.utc).isoformat()
+        else:
+            doc.deleted_at = None
+            
+    doc.updated_at = datetime.now(timezone.utc).isoformat()
+    db.commit()
+    db.refresh(doc)
+    return doc
+
+
+@router.delete("/{id}", dependencies=[Depends(verify_csrf)])
+def delete_document(id: str, permanent: bool = False, db: Session = Depends(get_db)):
+    """Soft delete by default. Hard delete if permanent=True AND already in trash."""
+    doc = db.query(Document).filter(Document.id == id).first()
+    if not doc:
+        raise HTTPException(status_code=404, detail="Document not found")
+        
+    if permanent:
+        if doc.deleted_at is None:
+            raise HTTPException(status_code=400, detail="Must be in trash to delete permanently")
+        
+        # Hard delete
+        delete_pdf_file(doc.id)
+        delete_thumbnail(doc.id)
+        db.query(AnnotationState).filter(AnnotationState.document_id == doc.id).delete()
+        db.query(Version).filter(Version.document_id == doc.id).delete()
+        db.delete(doc)
+        db.commit()
+        return {"status": "deleted"}
+    else:
+        # Soft delete
+        doc.deleted_at = datetime.now(timezone.utc).isoformat()
+        db.commit()
+        return {"status": "trashed"}
+
+
+@router.post("/{id}/restore", dependencies=[Depends(verify_csrf)], response_model=DocumentMeta)
+def restore_document(id: str, db: Session = Depends(get_db)):
+    doc = db.query(Document).filter(Document.id == id).first()
+    if not doc:
+        raise HTTPException(status_code=404, detail="Document not found")
+        
+    doc.deleted_at = None
+    doc.updated_at = datetime.now(timezone.utc).isoformat()
+    db.commit()
+    db.refresh(doc)
+    return doc
+
+
+@router.post("/bulk-delete", dependencies=[Depends(verify_csrf)])
+def bulk_delete(data: BulkDeleteRequest, db: Session = Depends(get_db)):
+    now = datetime.now(timezone.utc).isoformat()
+    db.query(Document).filter(Document.id.in_(data.ids)).update({
+        Document.deleted_at: now
+    }, synchronize_session=False)
+    db.commit()
+    return {"status": "ok", "count": len(data.ids)}
+
+
+@router.post("/bulk-restore", dependencies=[Depends(verify_csrf)])
+def bulk_restore(data: BulkRestoreRequest, db: Session = Depends(get_db)):
+    now = datetime.now(timezone.utc).isoformat()
+    db.query(Document).filter(Document.id.in_(data.ids)).update({
+        Document.deleted_at: None,
+        Document.updated_at: now
+    }, synchronize_session=False)
+    db.commit()
+    return {"status": "ok", "count": len(data.ids)}
+
+
+@router.post("/trash/empty", dependencies=[Depends(verify_csrf)])
+def empty_trash(db: Session = Depends(get_db)):
+    docs = db.query(Document).filter(Document.deleted_at.is_not(None)).all()
+    count = 0
+    for doc in docs:
+        delete_pdf_file(doc.id)
+        delete_thumbnail(doc.id)
+        db.query(AnnotationState).filter(AnnotationState.document_id == doc.id).delete()
+        db.query(Version).filter(Version.document_id == doc.id).delete()
+        db.delete(doc)
+        count += 1
+    db.commit()
+    return {"status": "ok", "deleted": count}
+
+
+@router.get("/{id}/file")
+def get_document_file(id: str, db: Session = Depends(get_db)):
+    doc = db.query(Document).filter(Document.id == id).first()
+    if not doc:
+        raise HTTPException(status_code=404, detail="Document not found")
+        
+    path = settings.PDF_STORAGE_PATH / f"{doc.id}.pdf"
+    if not path.exists():
+        raise HTTPException(status_code=404, detail="File missing")
+        
+    return FileResponse(path, media_type="application/pdf", filename=doc.filename)
+
+
+@router.get("/{id}/thumbnail")
+def get_document_thumbnail(id: str, db: Session = Depends(get_db)):
+    doc = db.query(Document).filter(Document.id == id).first()
+    if not doc:
+        raise HTTPException(status_code=404, detail="Document not found")
+        
+    path = settings.THUMBNAILS_PATH / f"{doc.id}.png"
+    if not path.exists():
+        raise HTTPException(status_code=404, detail="Thumbnail missing")
+        
+    return FileResponse(path, media_type="image/png")
diff --git a/backend/app/auth/dependencies.py b/backend/app/auth/dependencies.py
new file mode 100644
index 0000000..648ac19
--- /dev/null
+++ b/backend/app/auth/dependencies.py
@@ -0,0 +1,35 @@
+"""FastAPI dependencies for authentication and security."""
+
+from fastapi import Request, HTTPException
+
+from app.auth.session import verify_session
+from app.config import settings
+
+def get_current_user(request: Request) -> int:
+    """
+    Dependency that extracts and validates the session cookie.
+    Raises 401 if missing or invalid.
+    Returns the user_id.
+    """
+    token = request.cookies.get(settings.COOKIE_NAME)
+    if not token:
+        raise HTTPException(status_code=401, detail="Not authenticated")
+    
+    user_id = verify_session(token)
+    if not user_id:
+        raise HTTPException(status_code=401, detail="Session expired or invalid")
+    
+    return user_id
+
+
+def verify_csrf(request: Request) -> None:
+    """
+    Dependency to mitigate CSRF for cookie-based auth.
+    Requires X-Requested-With header on all mutating requests.
+    """
+    if request.method in ["POST", "PUT", "PATCH", "DELETE"]:
+        if request.headers.get("X-Requested-With") != "XMLHttpRequest":
+            raise HTTPException(
+                status_code=403, 
+                detail="CSRF check failed: missing X-Requested-With header"
+            )
diff --git a/backend/app/auth/hashing.py b/backend/app/auth/hashing.py
new file mode 100644
index 0000000..31beb5d
--- /dev/null
+++ b/backend/app/auth/hashing.py
@@ -0,0 +1,20 @@
+"""Argon2id password hashing and verification."""
+
+from argon2 import PasswordHasher
+from argon2.exceptions import VerifyMismatchError
+
+# Argon2id is the default for PasswordHasher
+ph = PasswordHasher()
+
+def hash_password(password: str) -> str:
+    """Hash a plaintext password."""
+    return ph.hash(password)
+
+def verify_password(hashed: str, password: str) -> bool:
+    """Verify a password against a hash. Returns True if matched."""
+    try:
+        ph.verify(hashed, password)
+        # Note: We skip check_needs_rehash() for simplicity in this single-user app.
+        return True
+    except VerifyMismatchError:
+        return False
diff --git a/backend/app/auth/rate_limit.py b/backend/app/auth/rate_limit.py
new file mode 100644
index 0000000..fd25202
--- /dev/null
+++ b/backend/app/auth/rate_limit.py
@@ -0,0 +1,59 @@
+"""In-memory rate limiting for login attempts."""
+
+import time
+from collections import defaultdict
+from fastapi import HTTPException
+
+from app.config import settings
+
+# In-memory store: IP address -> {"attempts": int, "lockout_until": float}
+_rate_limits: dict[str, dict[str, float]] = defaultdict(
+    lambda: {"attempts": 0, "lockout_until": 0.0}
+)
+
+
+def check_rate_limit(ip: str) -> None:
+    """
+    Check if the IP is currently locked out.
+    Raises a 429 HTTPException if locked out.
+    """
+    now = time.time()
+    record = _rate_limits[ip]
+
+    if record["lockout_until"] > now:
+        remaining = int(record["lockout_until"] - now)
+        raise HTTPException(
+            status_code=429,
+            detail=f"Too many failed attempts. Try again in {remaining} seconds.",
+            headers={"Retry-After": str(remaining)},
+        )
+    
+    # If lockout has expired, reset
+    if record["lockout_until"] > 0 and record["lockout_until"] <= now:
+        record["attempts"] = 0
+        record["lockout_until"] = 0.0
+
+
+def record_failed_attempt(ip: str) -> None:
+    """
+    Record a failed login attempt for the IP.
+    Applies lockout if MAX_ATTEMPTS is reached.
+    """
+    now = time.time()
+    record = _rate_limits[ip]
+    record["attempts"] += 1
+
+    if record["attempts"] >= settings.LOGIN_MAX_ATTEMPTS:
+        record["lockout_until"] = now + settings.LOGIN_LOCKOUT_SECONDS
+        remaining = settings.LOGIN_LOCKOUT_SECONDS
+        raise HTTPException(
+            status_code=429,
+            detail=f"Too many failed attempts. Try again in {remaining} seconds.",
+            headers={"Retry-After": str(remaining)},
+        )
+
+
+def clear_attempts(ip: str) -> None:
+    """Clear all failed attempts for the IP (e.g., after successful login)."""
+    if ip in _rate_limits:
+        _rate_limits[ip] = {"attempts": 0, "lockout_until": 0.0}
diff --git a/backend/app/auth/session.py b/backend/app/auth/session.py
new file mode 100644
index 0000000..837ad59
--- /dev/null
+++ b/backend/app/auth/session.py
@@ -0,0 +1,49 @@
+"""Session token generation and validation."""
+
+from typing import Any
+from fastapi import Response
+from itsdangerous import URLSafeTimedSerializer, BadSignature, SignatureExpired
+
+from app.config import settings
+
+def get_serializer() -> URLSafeTimedSerializer:
+    """Return a configured URLSafeTimedSerializer."""
+    return URLSafeTimedSerializer(settings.SECRET_KEY)
+
+def create_session(response: Response, user_id: int = 1) -> None:
+    """Create a new session token and set it as an HTTP-only cookie."""
+    serializer = get_serializer()
+    token = serializer.dumps({"user_id": user_id})
+    
+    response.set_cookie(
+        key=settings.COOKIE_NAME,
+        value=token,
+        max_age=settings.COOKIE_MAX_AGE_SECONDS,
+        secure=settings.COOKIE_SECURE,
+        httponly=True,
+        samesite="lax",
+    )
+
+def clear_session(response: Response) -> None:
+    """Clear the session cookie."""
+    response.delete_cookie(
+        key=settings.COOKIE_NAME,
+        secure=settings.COOKIE_SECURE,
+        httponly=True,
+        samesite="lax",
+    )
+
+def verify_session(token: str) -> int | None:
+    """
+    Verify the session token.
+    Returns the user_id if valid, or None if invalid/expired.
+    """
+    serializer = get_serializer()
+    try:
+        data: dict[str, Any] = serializer.loads(
+            token, 
+            max_age=settings.COOKIE_MAX_AGE_SECONDS
+        )
+        return data.get("user_id")
+    except (BadSignature, SignatureExpired):
+        return None
diff --git a/backend/app/models/document.py b/backend/app/models/document.py
index d25aa3d..a60a695 100644
--- a/backend/app/models/document.py
+++ b/backend/app/models/document.py
@@ -38,6 +38,18 @@ class Document(Base):
     updated_at: Mapped[str] = mapped_column(Text, default=_now_iso, onupdate=_now_iso)
     deleted_at: Mapped[str | None] = mapped_column(Text, nullable=True, default=None)
 
+    @property
+    def in_trash(self) -> bool:
+        return self.deleted_at is not None
+
+    @property
+    def filename(self) -> str:
+        return self.original_filename
+
+    @property
+    def mime_type(self) -> str:
+        return "application/pdf"
+
     # Relationships
     annotation_state: Mapped["AnnotationState"] = relationship(
         "AnnotationState",
diff --git a/backend/app/schemas/auth.py b/backend/app/schemas/auth.py
new file mode 100644
index 0000000..58bfb9d
--- /dev/null
+++ b/backend/app/schemas/auth.py
@@ -0,0 +1,17 @@
+"""Auth request and response schemas."""
+
+from pydantic import BaseModel, Field
+
+class SetupRequest(BaseModel):
+    password: str = Field(..., min_length=8)
+
+class LoginRequest(BaseModel):
+    password: str
+
+class ChangePasswordRequest(BaseModel):
+    current_password: str
+    new_password: str = Field(..., min_length=8)
+
+class AuthStatusResponse(BaseModel):
+    setupRequired: bool
+    loggedIn: bool
diff --git a/backend/app/schemas/document.py b/backend/app/schemas/document.py
new file mode 100644
index 0000000..0479202
--- /dev/null
+++ b/backend/app/schemas/document.py
@@ -0,0 +1,31 @@
+"""Pydantic schemas for Document APIs."""
+
+from pydantic import BaseModel
+from typing import Optional
+
+class DocumentMeta(BaseModel):
+    id: str
+    title: str
+    filename: str
+    mime_type: str
+    size_bytes: int
+    in_trash: bool
+    created_at: str
+    updated_at: str
+    deleted_at: Optional[str]
+
+    model_config = {"from_attributes": True}
+
+class DocumentListResponse(BaseModel):
+    items: list[DocumentMeta]
+    total: int
+
+class BulkDeleteRequest(BaseModel):
+    ids: list[str]
+
+class BulkRestoreRequest(BaseModel):
+    ids: list[str]
+
+class DocumentUpdateRequest(BaseModel):
+    title: Optional[str] = None
+    in_trash: Optional[bool] = None
diff --git a/backend/app/services/storage.py b/backend/app/services/storage.py
new file mode 100644
index 0000000..d500ac9
--- /dev/null
+++ b/backend/app/services/storage.py
@@ -0,0 +1,53 @@
+"""Document storage service."""
+
+import shutil
+import uuid
+import pymupdf
+from pathlib import Path
+from fastapi import UploadFile, HTTPException
+
+from app.config import settings
+
+def validate_pdf(filepath: Path) -> None:
+    """Validate PDF magic bytes and PyMuPDF openability."""
+    with open(filepath, "rb") as f:
+        header = f.read(5)
+        if header != b"%PDF-":
+            raise ValueError("Not a valid PDF file (missing magic bytes)")
+
+    try:
+        doc = pymupdf.open(filepath)
+        doc.close()
+    except Exception as e:
+        raise ValueError(f"Failed to open PDF with PyMuPDF: {e}")
+
+async def save_upload_file(upload_file: UploadFile) -> tuple[str, int, int]:
+    """Save an uploaded file to disk and validate it."""
+    file_id = str(uuid.uuid4())
+    filepath = settings.PDF_STORAGE_PATH / f"{file_id}.pdf"
+
+    try:
+        with open(filepath, "wb") as f:
+            shutil.copyfileobj(upload_file.file, f)
+    except Exception as e:
+        if filepath.exists():
+            filepath.unlink()
+        raise HTTPException(status_code=500, detail="Failed to save file")
+
+    page_count = 0
+    try:
+        doc = pymupdf.open(filepath)
+        page_count = len(doc)
+        doc.close()
+    except Exception as e:
+        filepath.unlink()
+        raise HTTPException(status_code=400, detail=f"Failed to open PDF with PyMuPDF: {e}")
+    
+    size = filepath.stat().st_size
+    return file_id, size, page_count
+
+def delete_pdf_file(file_id: str) -> None:
+    """Delete a PDF file from storage."""
+    filepath = settings.PDF_STORAGE_PATH / f"{file_id}.pdf"
+    if filepath.exists():
+        filepath.unlink()
diff --git a/backend/app/services/thumbnails.py b/backend/app/services/thumbnails.py
new file mode 100644
index 0000000..fa50b92
--- /dev/null
+++ b/backend/app/services/thumbnails.py
@@ -0,0 +1,38 @@
+"""Thumbnail generation service."""
+
+import pymupdf
+from pathlib import Path
+
+from app.config import settings
+
+def generate_thumbnail(file_id: str) -> None:
+    """Generate a PNG thumbnail for the first page of a PDF."""
+    pdf_path = settings.PDF_STORAGE_PATH / f"{file_id}.pdf"
+    thumb_path = settings.THUMBNAILS_PATH / f"{file_id}.png"
+    
+    if not pdf_path.exists():
+        return
+        
+    try:
+        doc = pymupdf.open(pdf_path)
+        if len(doc) > 0:
+            page = doc[0]
+            # Zoom to approximately 600px width
+            rect = page.rect
+            zoom = 600.0 / rect.width if rect.width > 0 else 1.0
+            mat = pymupdf.Matrix(zoom, zoom)
+            
+            # Render pixmap
+            pix = page.get_pixmap(matrix=mat, alpha=False)
+            
+            # Save as PNG
+            pix.save(thumb_path, output="png")
+        doc.close()
+    except Exception as e:
+        print(f"Failed to generate thumbnail for {file_id}: {e}")
+
+def delete_thumbnail(file_id: str) -> None:
+    """Delete a thumbnail file."""
+    thumb_path = settings.THUMBNAILS_PATH / f"{file_id}.png"
+    if thumb_path.exists():
+        thumb_path.unlink()
diff --git a/backend/app/services/trash_sweep.py b/backend/app/services/trash_sweep.py
new file mode 100644
index 0000000..99c6079
--- /dev/null
+++ b/backend/app/services/trash_sweep.py
@@ -0,0 +1,48 @@
+"""Background tasks for sweeping trash and old versions."""
+
+from datetime import datetime, timedelta, timezone
+from sqlalchemy.orm import Session
+
+from app.db import get_db
+from app.models.document import Document
+from app.models.annotation_state import AnnotationState
+from app.models.version import Version
+from app.services.storage import delete_pdf_file
+from app.services.thumbnails import delete_thumbnail
+from app.config import settings
+
+def sweep_trash(db: Session) -> None:
+    """Permanently delete documents that have been in the trash past the retention period."""
+    cutoff = datetime.now(timezone.utc) - timedelta(days=settings.TRASH_RETENTION_DAYS)
+    cutoff_iso = cutoff.isoformat()
+    
+    docs_to_delete = db.query(Document).filter(
+        Document.in_trash == True,
+        Document.deleted_at <= cutoff_iso
+    ).all()
+    
+    for doc in docs_to_delete:
+        # Delete files from disk
+        delete_pdf_file(doc.id)
+        delete_thumbnail(doc.id)
+        
+        # Delete DB associations
+        db.query(AnnotationState).filter(AnnotationState.document_id == doc.id).delete()
+        db.query(Version).filter(Version.document_id == doc.id).delete()
+        
+        # Delete document record
+        db.delete(doc)
+    
+    db.commit()
+
+def prune_auto_versions(db: Session) -> None:
+    """Delete automatic versions older than the retention period."""
+    cutoff = datetime.now(timezone.utc) - timedelta(days=settings.AUTO_VERSION_RETENTION_DAYS)
+    cutoff_iso = cutoff.isoformat()
+    
+    db.query(Version).filter(
+        Version.kind == "auto",
+        Version.created_at <= cutoff_iso
+    ).delete()
+    
+    db.commit()
diff --git a/docker-compose.yml b/docker-compose.yml
index 6177a7c..d67aa0c 100644
--- a/docker-compose.yml
+++ b/docker-compose.yml
@@ -14,8 +14,8 @@ services:
       - pdf_storage:/data/pdfs
       - thumbnails:/data/thumbnails
       - db:/data/db
-    expose:
-      - "8000"
+    ports:
+      - "8000:8000"
     restart: unless-stopped
 
   frontend:
diff --git a/frontend/package-lock.json b/frontend/package-lock.json
index 7fc98c4..9850eac 100644
--- a/frontend/package-lock.json
+++ b/frontend/package-lock.json
@@ -1,14 +1,15 @@
 {
-  "name": "frontend",
-  "version": "0.0.0",
+  "name": "paperjet",
+  "version": "0.1.0",
   "lockfileVersion": 3,
   "requires": true,
   "packages": {
     "": {
-      "name": "frontend",
-      "version": "0.0.0",
+      "name": "paperjet",
+      "version": "0.1.0",
       "dependencies": {
         "@tailwindcss/vite": "^4.3.0",
+        "date-fns": "^4.4.0",
         "fabric": "^7.4.0",
         "pdfjs-dist": "^6.0.227",
         "react": "^19.2.6",
@@ -22,7 +23,7 @@
         "@testing-library/jest-dom": "^6.9.1",
         "@testing-library/react": "^16.3.2",
         "@types/fabric": "^5.3.11",
-        "@types/node": "^24.12.3",
+        "@types/node": "^24.13.2",
         "@types/react": "^19.2.14",
         "@types/react-dom": "^19.2.3",
         "@vitejs/plugin-react": "^6.0.1",
@@ -2598,6 +2599,16 @@
         "node": "^20.19.0 || ^22.12.0 || >=24.0.0"
       }
     },
+    "node_modules/date-fns": {
+      "version": "4.4.0",
+      "resolved": "https://registry.npmjs.org/date-fns/-/date-fns-4.4.0.tgz",
+      "integrity": "sha512-+1UMbeh68lH1SegH83CGWwpb6OHHbpSgr3+s5Eww5M4CAgswBpoWS0AjTOfEJ33HiYKz1hdj/KTFprzXHmq/6w==",
+      "license": "MIT",
+      "funding": {
+        "type": "github",
+        "url": "https://github.com/sponsors/kossnocorp"
+      }
+    },
     "node_modules/debug": {
       "version": "4.4.3",
       "resolved": "https://registry.npmjs.org/debug/-/debug-4.4.3.tgz",
@@ -3508,7 +3519,6 @@
       "integrity": "sha512-ECi4Fi2f7BdJtUKTflYRTiaMxIB0O6zfR1fX0GXpUrf6flp8QIYn1UT20YQqdSOfk2dfkCwS8LAFoJDEppNK5Q==",
       "dev": true,
       "license": "MIT",
-      "peer": true,
       "dependencies": {
         "@asamuzakjp/css-color": "^5.1.11",
         "@asamuzakjp/dom-selector": "^7.1.1",
diff --git a/frontend/package.json b/frontend/package.json
index 75bc372..7149971 100644
--- a/frontend/package.json
+++ b/frontend/package.json
@@ -14,6 +14,7 @@
   },
   "dependencies": {
     "@tailwindcss/vite": "^4.3.0",
+    "date-fns": "^4.4.0",
     "fabric": "^7.4.0",
     "pdfjs-dist": "^6.0.227",
     "react": "^19.2.6",
@@ -27,7 +28,7 @@
     "@testing-library/jest-dom": "^6.9.1",
     "@testing-library/react": "^16.3.2",
     "@types/fabric": "^5.3.11",
-    "@types/node": "^24.12.3",
+    "@types/node": "^24.13.2",
     "@types/react": "^19.2.14",
     "@types/react-dom": "^19.2.3",
     "@vitejs/plugin-react": "^6.0.1",
diff --git a/frontend/src/app/App.tsx b/frontend/src/app/App.tsx
index 1c35dfc..967a062 100644
--- a/frontend/src/app/App.tsx
+++ b/frontend/src/app/App.tsx
@@ -1,22 +1,36 @@
 import { Routes, Route, Navigate } from 'react-router-dom'
 import { LoginPage } from '../pages/LoginPage'
+import { SetupPage } from '../pages/SetupPage'
 import { HomePage } from '../pages/HomePage'
 import { EditorPage } from '../pages/EditorPage'
+import { AuthGuard } from '../features/auth/AuthGuard'
 
-/**
- * Root application component with route definitions.
- *
- * Routes:
- * - /login — password entry / first-run setup
- * - / — home page (recently edited, library, trash)
- * - /editor/:id — PDF editor workspace
- */
 export function App() {
   return (
     <Routes>
-      <Route path="/login" element={<LoginPage />} />
-      <Route path="/" element={<HomePage />} />
-      <Route path="/editor/:id" element={<EditorPage />} />
+      <Route path="/login" element={
+        <AuthGuard>
+          <LoginPage />
+        </AuthGuard>
+      } />
+      <Route path="/setup" element={
+        <AuthGuard>
+          <SetupPage />
+        </AuthGuard>
+      } />
+      
+      {/* Protected Routes */}
+      <Route path="/" element={
+        <AuthGuard>
+          <HomePage />
+        </AuthGuard>
+      } />
+      <Route path="/editor/:id" element={
+        <AuthGuard>
+          <EditorPage />
+        </AuthGuard>
+      } />
+      
       <Route path="*" element={<Navigate to="/" replace />} />
     </Routes>
   )
diff --git a/frontend/src/features/auth/AuthGuard.tsx b/frontend/src/features/auth/AuthGuard.tsx
new file mode 100644
index 0000000..7af20b1
--- /dev/null
+++ b/frontend/src/features/auth/AuthGuard.tsx
@@ -0,0 +1,32 @@
+import { useEffect } from 'react'
+import { Navigate, useLocation } from 'react-router-dom'
+import { useAuth } from './useAuth'
+
+export const AuthGuard = ({ children }: { children: React.ReactNode }) => {
+  const { isInitialized, loggedIn, setupRequired, initialize } = useAuth()
+  const location = useLocation()
+
+  useEffect(() => {
+    if (!isInitialized) {
+      initialize()
+    }
+  }, [isInitialized, initialize])
+
+  if (!isInitialized) {
+    return (
+      <div className="min-h-screen flex items-center justify-center bg-gray-50 dark:bg-gray-900">
+        <div className="animate-spin rounded-full h-8 w-8 border-b-2 border-indigo-600"></div>
+      </div>
+    )
+  }
+
+  if (setupRequired && location.pathname !== '/setup') {
+    return <Navigate to="/setup" replace />
+  }
+
+  if (!loggedIn && !setupRequired && location.pathname !== '/login') {
+    return <Navigate to="/login" replace />
+  }
+
+  return <>{children}</>
+}
diff --git a/frontend/src/features/auth/LoginForm.tsx b/frontend/src/features/auth/LoginForm.tsx
new file mode 100644
index 0000000..5949c2e
--- /dev/null
+++ b/frontend/src/features/auth/LoginForm.tsx
@@ -0,0 +1,72 @@
+import { useState } from 'react'
+import { useNavigate } from 'react-router-dom'
+import { useAuth } from './useAuth'
+
+export const LoginForm = () => {
+  const [password, setPassword] = useState('')
+  const { login, error, isLoading } = useAuth()
+  const navigate = useNavigate()
+
+  const handleSubmit = async (e: React.FormEvent) => {
+    e.preventDefault()
+    if (!password) return
+
+    try {
+      await login({ password })
+      navigate('/')
+    } catch (err) {
+      // Error is handled by the store
+    }
+  }
+
+  return (
+    <div className="w-full max-w-md p-8 space-y-8 bg-white/70 dark:bg-gray-800/70 backdrop-blur-xl rounded-2xl shadow-2xl border border-gray-100 dark:border-gray-700 transition-all">
+      <div className="text-center">
+        <h2 className="text-3xl font-extrabold tracking-tight text-gray-900 dark:text-white mb-2">
+          Welcome back
+        </h2>
+        <p className="text-sm text-gray-500 dark:text-gray-400">
+          Enter your master password to unlock your library
+        </p>
+      </div>
+
+      <form className="mt-8 space-y-6" onSubmit={handleSubmit}>
+        <div>
+          <label className="block text-sm font-medium text-gray-700 dark:text-gray-300 mb-2">
+            Password
+          </label>
+          <input
+            type="password"
+            required
+            className="w-full px-4 py-3 rounded-xl border border-gray-300 dark:border-gray-600 bg-white/50 dark:bg-gray-700/50 text-gray-900 dark:text-white focus:ring-2 focus:ring-indigo-500 focus:border-transparent outline-none transition-all placeholder-gray-400 dark:placeholder-gray-500"
+            placeholder="••••••••"
+            value={password}
+            onChange={(e) => setPassword(e.target.value)}
+            disabled={isLoading}
+          />
+        </div>
+
+        {error && (
+          <div className="p-3 text-sm text-red-600 bg-red-50 dark:bg-red-900/30 dark:text-red-400 rounded-lg animate-pulse">
+            {error}
+          </div>
+        )}
+
+        <button
+          type="submit"
+          disabled={isLoading || !password}
+          className="w-full flex justify-center py-3 px-4 border border-transparent rounded-xl shadow-sm text-sm font-medium text-white bg-indigo-600 hover:bg-indigo-700 focus:outline-none focus:ring-2 focus:ring-offset-2 focus:ring-indigo-500 disabled:opacity-50 disabled:cursor-not-allowed transition-all active:scale-[0.98]"
+        >
+          {isLoading ? (
+            <svg className="animate-spin -ml-1 mr-3 h-5 w-5 text-white" fill="none" viewBox="0 0 24 24">
+              <circle className="opacity-25" cx="12" cy="12" r="10" stroke="currentColor" strokeWidth="4"></circle>
+              <path className="opacity-75" fill="currentColor" d="M4 12a8 8 0 018-8V0C5.373 0 0 5.373 0 12h4zm2 5.291A7.962 7.962 0 014 12H0c0 3.042 1.135 5.824 3 7.938l3-2.647z"></path>
+            </svg>
+          ) : (
+            'Unlock Library'
+          )}
+        </button>
+      </form>
+    </div>
+  )
+}
diff --git a/frontend/src/features/auth/SetupForm.tsx b/frontend/src/features/auth/SetupForm.tsx
new file mode 100644
index 0000000..6234457
--- /dev/null
+++ b/frontend/src/features/auth/SetupForm.tsx
@@ -0,0 +1,107 @@
+import { useState } from 'react'
+import { useNavigate } from 'react-router-dom'
+import { useAuth } from './useAuth'
+
+export const SetupForm = () => {
+  const [password, setPassword] = useState('')
+  const [confirmPassword, setConfirmPassword] = useState('')
+  const [localError, setLocalError] = useState('')
+  const { setup, error, isLoading } = useAuth()
+  const navigate = useNavigate()
+
+  const handleSubmit = async (e: React.FormEvent) => {
+    e.preventDefault()
+    setLocalError('')
+
+    if (password.length < 8) {
+      setLocalError('Password must be at least 8 characters long')
+      return
+    }
+
+    if (password !== confirmPassword) {
+      setLocalError('Passwords do not match')
+      return
+    }
+
+    try {
+      await setup({ password })
+      navigate('/')
+    } catch (err) {
+      // Error is handled by the store
+    }
+  }
+
+  const displayError = localError || error
+
+  return (
+    <div className="w-full max-w-md p-8 space-y-8 bg-white/70 dark:bg-gray-800/70 backdrop-blur-xl rounded-2xl shadow-2xl border border-gray-100 dark:border-gray-700 transition-all">
+      <div className="text-center">
+        <div className="mx-auto w-16 h-16 bg-indigo-100 dark:bg-indigo-900/50 rounded-full flex items-center justify-center mb-6">
+          <svg className="w-8 h-8 text-indigo-600 dark:text-indigo-400" fill="none" stroke="currentColor" viewBox="0 0 24 24">
+            <path strokeLinecap="round" strokeLinejoin="round" strokeWidth="2" d="M12 15v2m-6 4h12a2 2 0 002-2v-6a2 2 0 00-2-2H6a2 2 0 00-2 2v6a2 2 0 002 2zm10-10V7a4 4 0 00-8 0v4h8V7a4 4 0 00-8 0v4h8z" />
+          </svg>
+        </div>
+        <h2 className="text-3xl font-extrabold tracking-tight text-gray-900 dark:text-white mb-2">
+          Set up PaperJet
+        </h2>
+        <p className="text-sm text-gray-500 dark:text-gray-400">
+          Create a master password to secure your documents. Make sure you remember it!
+        </p>
+      </div>
+
+      <form className="mt-8 space-y-6" onSubmit={handleSubmit}>
+        <div className="space-y-4">
+          <div>
+            <label className="block text-sm font-medium text-gray-700 dark:text-gray-300 mb-2">
+              Master Password
+            </label>
+            <input
+              type="password"
+              required
+              className="w-full px-4 py-3 rounded-xl border border-gray-300 dark:border-gray-600 bg-white/50 dark:bg-gray-700/50 text-gray-900 dark:text-white focus:ring-2 focus:ring-indigo-500 focus:border-transparent outline-none transition-all"
+              placeholder="••••••••"
+              value={password}
+              onChange={(e) => setPassword(e.target.value)}
+              disabled={isLoading}
+            />
+          </div>
+          <div>
+            <label className="block text-sm font-medium text-gray-700 dark:text-gray-300 mb-2">
+              Confirm Password
+            </label>
+            <input
+              type="password"
+              required
+              className="w-full px-4 py-3 rounded-xl border border-gray-300 dark:border-gray-600 bg-white/50 dark:bg-gray-700/50 text-gray-900 dark:text-white focus:ring-2 focus:ring-indigo-500 focus:border-transparent outline-none transition-all"
+              placeholder="••••••••"
+              value={confirmPassword}
+              onChange={(e) => setConfirmPassword(e.target.value)}
+              disabled={isLoading}
+            />
+          </div>
+        </div>
+
+        {displayError && (
+          <div className="p-3 text-sm text-red-600 bg-red-50 dark:bg-red-900/30 dark:text-red-400 rounded-lg animate-pulse">
+            {displayError}
+          </div>
+        )}
+
+        <button
+          type="submit"
+          disabled={isLoading || !password || !confirmPassword}
+          className="w-full flex justify-center py-3 px-4 border border-transparent rounded-xl shadow-sm text-sm font-medium text-white bg-indigo-600 hover:bg-indigo-700 focus:outline-none focus:ring-2 focus:ring-offset-2 focus:ring-indigo-500 disabled:opacity-50 disabled:cursor-not-allowed transition-all active:scale-[0.98]"
+        >
+          {isLoading ? (
+            <svg className="animate-spin -ml-1 mr-3 h-5 w-5 text-white" fill="none" viewBox="0 0 24 24">
+              <circle className="opacity-25" cx="12" cy="12" r="10" stroke="currentColor" strokeWidth="4"></circle>
+              <path className="opacity-75" fill="currentColor" d="M4 12a8 8 0 018-8V0C5.373 0 0 5.373 0 12h4zm2 5.291A7.962 7.962 0 014 12H0c0 3.042 1.135 5.824 3 7.938l3-2.647z"></path>
+            </svg>
+          ) : (
+            'Complete Setup'
+          )}
+        </button>
+      </form>
+    </div>
+  )
+}
diff --git a/frontend/src/features/auth/api.ts b/frontend/src/features/auth/api.ts
new file mode 100644
index 0000000..cb1928b
--- /dev/null
+++ b/frontend/src/features/auth/api.ts
@@ -0,0 +1,21 @@
+import { api } from '@/lib/api/client'
+import type { LoginCredentials, SetupCredentials } from './types'
+
+export interface AuthStatus {
+  setupRequired: boolean
+  loggedIn: boolean
+}
+
+export const authApi = {
+  /** Check if setup is required and if user is logged in */
+  getStatus: () => api.get<AuthStatus>('/auth/status'),
+
+  /** Initial setup to create the password */
+  setup: (data: SetupCredentials) => api.post<{ status: string }>('/auth/setup', data),
+
+  /** Login to get a session cookie */
+  login: (data: LoginCredentials) => api.post<{ status: string }>('/auth/login', data),
+
+  /** Logout and clear session */
+  logout: () => api.post<{ status: string }>('/auth/logout'),
+}
diff --git a/frontend/src/features/auth/types.ts b/frontend/src/features/auth/types.ts
new file mode 100644
index 0000000..17dc87c
--- /dev/null
+++ b/frontend/src/features/auth/types.ts
@@ -0,0 +1,7 @@
+export interface LoginCredentials {
+  password: string
+}
+
+export interface SetupCredentials {
+  password: string
+}
diff --git a/frontend/src/features/auth/useAuth.ts b/frontend/src/features/auth/useAuth.ts
new file mode 100644
index 0000000..3f34898
--- /dev/null
+++ b/frontend/src/features/auth/useAuth.ts
@@ -0,0 +1,88 @@
+import { create } from 'zustand'
+import { authApi } from './api'
+import type { LoginCredentials, SetupCredentials } from './types'
+
+interface AuthState {
+  isInitialized: boolean
+  setupRequired: boolean
+  loggedIn: boolean
+  isLoading: boolean
+  error: string | null
+  
+  initialize: () => Promise<void>
+  login: (data: LoginCredentials) => Promise<void>
+  setup: (data: SetupCredentials) => Promise<void>
+  logout: () => Promise<void>
+  clearError: () => void
+}
+
+export const useAuth = create<AuthState>((set) => ({
+  isInitialized: false,
+  setupRequired: false,
+  loggedIn: false,
+  isLoading: true,
+  error: null,
+
+  initialize: async () => {
+    try {
+      set({ isLoading: true, error: null })
+      const status = await authApi.getStatus()
+      set({ 
+        setupRequired: status.setupRequired, 
+        loggedIn: status.loggedIn,
+        isInitialized: true,
+        isLoading: false
+      })
+    } catch (err: any) {
+      set({ 
+        error: err.error?.message || err.message || 'Failed to initialize',
+        isLoading: false,
+        isInitialized: true
+      })
+    }
+  },
+
+  login: async (data: LoginCredentials) => {
+    try {
+      set({ isLoading: true, error: null })
+      await authApi.login(data)
+      set({ loggedIn: true, isLoading: false })
+    } catch (err: any) {
+      set({ 
+        error: err.error?.message || err.message || 'Failed to login',
+        isLoading: false
+      })
+      throw err
+    }
+  },
+
+  setup: async (data: SetupCredentials) => {
+    try {
+      set({ isLoading: true, error: null })
+      await authApi.setup(data)
+      set({ setupRequired: false, loggedIn: true, isLoading: false })
+    } catch (err: any) {
+      set({ 
+        error: err.error?.message || err.message || 'Failed to setup',
+        isLoading: false
+      })
+      throw err
+    }
+  },
+
+  logout: async () => {
+    try {
+      set({ isLoading: true, error: null })
+      await authApi.logout()
+      set({ loggedIn: false, isLoading: false })
+      window.location.href = '/login'
+    } catch (err: any) {
+      set({ 
+        error: err.error?.message || err.message || 'Failed to logout',
+        isLoading: false
+      })
+    }
+  },
+
+  clearError: () => set({ error: null })
+}))
diff --git a/frontend/src/features/library/ContextMenu.tsx b/frontend/src/features/library/ContextMenu.tsx
new file mode 100644
index 0000000..b4255ab
--- /dev/null
+++ b/frontend/src/features/library/ContextMenu.tsx
@@ -0,0 +1,98 @@
+import { useEffect, useRef } from 'react'
+
+export interface ContextMenuProps {
+  x: number
+  y: number
+  isTrash: boolean
+  onClose: () => void
+  onOpen: () => void
+  onRename: () => void
+  onDelete: () => void
+  onRestore: () => void
+  onHardDelete: () => void
+}
+
+export const ContextMenu = ({
+  x, y, isTrash, onClose, onOpen, onRename, onDelete, onRestore, onHardDelete
+}: ContextMenuProps) => {
+  const menuRef = useRef<HTMLDivElement>(null)
+
+  useEffect(() => {
+    const handleClickOutside = (e: MouseEvent) => {
+      if (menuRef.current && !menuRef.current.contains(e.target as Node)) {
+        onClose()
+      }
+    }
+
+    const handleEscape = (e: KeyboardEvent) => {
+      if (e.key === 'Escape') onClose()
+    }
+
+    document.addEventListener('mousedown', handleClickOutside)
+    document.addEventListener('keydown', handleEscape)
+    
+    // Prevent scrolling while context menu is open
+    document.body.style.overflow = 'hidden'
+
+    return () => {
+      document.removeEventListener('mousedown', handleClickOutside)
+      document.removeEventListener('keydown', handleEscape)
+      document.body.style.overflow = ''
+    }
+  }, [onClose])
+
+  // Ensure menu doesn't go off screen
+  const safeX = Math.min(x, window.innerWidth - 200)
+  const safeY = Math.min(y, window.innerHeight - (isTrash ? 100 : 150))
+
+  return (
+    <div 
+      ref={menuRef}
+      className="fixed z-50 w-48 bg-white dark:bg-gray-800 rounded-xl shadow-2xl border border-gray-200 dark:border-gray-700 py-2 overflow-hidden animate-in fade-in zoom-in duration-100"
+      style={{ left: safeX, top: safeY }}
+      onContextMenu={(e) => e.preventDefault()}
+    >
+      {!isTrash && (
+        <>
+          <button 
+            onClick={() => { onOpen(); onClose(); }}
+            className="w-full text-left px-4 py-2 text-sm text-gray-700 dark:text-gray-200 hover:bg-indigo-50 dark:hover:bg-indigo-900/30 hover:text-indigo-600 dark:hover:text-indigo-400 transition-colors"
+          >
+            Open in Editor
+          </button>
+          <button 
+            onClick={() => { onRename(); onClose(); }}
+            className="w-full text-left px-4 py-2 text-sm text-gray-700 dark:text-gray-200 hover:bg-indigo-50 dark:hover:bg-indigo-900/30 hover:text-indigo-600 dark:hover:text-indigo-400 transition-colors"
+          >
+            Rename...
+          </button>
+          <div className="h-px bg-gray-200 dark:bg-gray-700 my-1 mx-2" />
+          <button 
+            onClick={() => { onDelete(); onClose(); }}
+            className="w-full text-left px-4 py-2 text-sm text-red-600 dark:text-red-400 hover:bg-red-50 dark:hover:bg-red-900/30 transition-colors"
+          >
+            Move to Trash
+          </button>
+        </>
+      )}
+      
+      {isTrash && (
+        <>
+          <button 
+            onClick={() => { onRestore(); onClose(); }}
+            className="w-full text-left px-4 py-2 text-sm text-gray-700 dark:text-gray-200 hover:bg-emerald-50 dark:hover:bg-emerald-900/30 hover:text-emerald-600 dark:hover:text-emerald-400 transition-colors"
+          >
+            Restore Document
+          </button>
+          <div className="h-px bg-gray-200 dark:bg-gray-700 my-1 mx-2" />
+          <button 
+            onClick={() => { onHardDelete(); onClose(); }}
+            className="w-full text-left px-4 py-2 text-sm text-red-600 dark:text-red-400 hover:bg-red-50 dark:hover:bg-red-900/30 transition-colors"
+          >
+            Delete Permanently
+          </button>
+        </>
+      )}
+    </div>
+  )
+}
diff --git a/frontend/src/features/library/DocumentGrid.tsx b/frontend/src/features/library/DocumentGrid.tsx
new file mode 100644
index 0000000..c5a454c
--- /dev/null
+++ b/frontend/src/features/library/DocumentGrid.tsx
@@ -0,0 +1,136 @@
+import { useState } from 'react'
+import { useLibrary } from './useLibrary'
+import { libraryApi } from './api'
+import { Link, useNavigate } from 'react-router-dom'
+import { formatDistanceToNow } from 'date-fns'
+import { ContextMenu } from './ContextMenu'
+
+export const DocumentGrid = ({ isTrash }: { isTrash: boolean }) => {
+  const { documents, selectedIds, toggleSelection, isLoading, error, deleteDocument, restoreDocument, updateDocument } = useLibrary()
+  const navigate = useNavigate()
+  
+  const [contextMenu, setContextMenu] = useState<{ x: number, y: number, docId: string } | null>(null)
+
+  const handleContextMenu = (e: React.MouseEvent, docId: string) => {
+    e.preventDefault()
+    setContextMenu({ x: e.clientX, y: e.clientY, docId })
+  }
+
+  if (isLoading) {
+    return (
+      <div className="flex justify-center items-center py-20">
+        <div className="animate-spin rounded-full h-8 w-8 border-b-2 border-indigo-600"></div>
+      </div>
+    )
+  }
+
+  if (error) {
+    return (
+      <div className="flex justify-center items-center py-20 text-red-500">
+        {error}
+      </div>
+    )
+  }
+
+  if (documents.length === 0) {
+    return (
+      <div className="flex flex-col items-center justify-center rounded-2xl border-2 border-dashed border-gray-300 dark:border-gray-700 py-24 text-center bg-white/50 dark:bg-gray-800/50 backdrop-blur-sm transition-all hover:border-indigo-400 dark:hover:border-indigo-500 hover:bg-indigo-50/50 dark:hover:bg-indigo-900/10">
+        <div className="mb-4 text-6xl opacity-50 grayscale hover:grayscale-0 transition-all duration-300">📄</div>
+        <h2 className="text-xl font-semibold text-gray-900 dark:text-white">
+          {isTrash ? 'Trash is empty' : 'No documents yet'}
+        </h2>
+        <p className="mt-2 text-sm text-gray-500 dark:text-gray-400">
+          {isTrash ? 'Nothing to see here.' : 'Drag & drop a PDF, or click Upload to get started.'}
+        </p>
+      </div>
+    )
+  }
+
+  return (
+    <>
+      <div className="grid grid-cols-2 md:grid-cols-3 lg:grid-cols-4 xl:grid-cols-5 gap-6">
+        {documents.map((doc) => {
+          const isSelected = selectedIds.has(doc.id)
+          const thumbnailUrl = libraryApi.getThumbnailUrl(doc.id)
+          
+          return (
+            <div 
+              key={doc.id}
+              onContextMenu={(e) => handleContextMenu(e, doc.id)}
+              className={`group relative flex flex-col bg-white dark:bg-gray-800 rounded-2xl overflow-hidden shadow-sm hover:shadow-xl transition-all duration-300 border-2 ${
+                isSelected ? 'border-indigo-500 shadow-md ring-2 ring-indigo-500/20' : 'border-transparent hover:border-indigo-200 dark:hover:border-indigo-800'
+              }`}
+            >
+              <div 
+                className="absolute top-3 left-3 z-10 opacity-0 group-hover:opacity-100 transition-opacity"
+                style={{ opacity: isSelected ? 1 : undefined }}
+              >
+                <input 
+                  type="checkbox"
+                  checked={isSelected}
+                  onChange={() => toggleSelection(doc.id)}
+                  className="w-5 h-5 rounded border-gray-300 text-indigo-600 focus:ring-indigo-500 cursor-pointer shadow-sm"
+                />
+              </div>
+              
+              <Link 
+                to={`/editor/${doc.id}`}
+                className="relative aspect-[3/4] bg-gray-100 dark:bg-gray-900 overflow-hidden"
+                onClick={(e) => {
+                  if (isTrash) e.preventDefault() // disable link in trash
+                }}
+              >
+                <img 
+                  src={thumbnailUrl} 
+                  alt={doc.title}
+                  className={`w-full h-full object-cover transition-transform duration-500 group-hover:scale-105 ${isTrash ? 'grayscale opacity-70' : ''}`}
+                  loading="lazy"
+                  onError={(e) => {
+                    // Fallback if no thumbnail
+                    (e.target as HTMLImageElement).src = 'data:image/svg+xml;utf8,<svg xmlns="http://www.w3.org/2000/svg" width="100" height="100" viewBox="0 0 24 24" fill="none" stroke="%239ca3af" stroke-width="2" stroke-linecap="round" stroke-linejoin="round"><path d="M14 2H6a2 2 0 0 0-2 2v16a2 2 0 0 0 2 2h12a2 2 0 0 0 2-2V8z"></path><polyline points="14 2 14 8 20 8"></polyline><line x1="16" y1="13" x2="8" y2="13"></line><line x1="16" y1="17" x2="8" y2="17"></line><polyline points="10 9 9 9 8 9"></polyline></svg>'
+                    ;(e.target as HTMLImageElement).className = 'w-1/2 h-1/2 absolute top-1/4 left-1/4 opacity-30 object-contain'
+                  }}
+                />
+                <div className="absolute inset-0 bg-gradient-to-t from-black/60 via-transparent to-black/10 opacity-0 group-hover:opacity-100 transition-opacity duration-300 pointer-events-none" />
+              </Link>
+              
+              <div className="p-4 flex flex-col">
+                <h3 className="text-sm font-semibold text-gray-900 dark:text-white truncate" title={doc.title}>
+                  {doc.title}
+                </h3>
+                <p className="text-xs text-gray-500 dark:text-gray-400 mt-1">
+                  {formatDistanceToNow(new Date(doc.updated_at), { addSuffix: true })}
+                </p>
+                <p className="text-[10px] text-gray-400 dark:text-gray-500 mt-0.5">
+                  {(doc.size_bytes / 1024 / 1024).toFixed(1)} MB
+                </p>
+              </div>
+            </div>
+          )
+        })}
+      </div>
+
+      {contextMenu && (
+        <ContextMenu
+          x={contextMenu.x}
+          y={contextMenu.y}
+          isTrash={isTrash}
+          onClose={() => setContextMenu(null)}
+          onOpen={() => navigate(`/editor/${contextMenu.docId}`)}
+          onRename={() => {
+            const doc = documents.find(d => d.id === contextMenu.docId)
+            if (doc) {
+              const newTitle = window.prompt("Rename Document:", doc.title)
+              if (newTitle && newTitle.trim() !== "" && newTitle !== doc.title) {
+                updateDocument(doc.id, { title: newTitle.trim() })
+              }
+            }
+          }}
+          onDelete={() => deleteDocument(contextMenu.docId)}
+          onRestore={() => restoreDocument(contextMenu.docId)}
+          onHardDelete={() => deleteDocument(contextMenu.docId, true)}
+        />
+      )}
+    </>
+  )
+}
diff --git a/frontend/src/features/library/LibraryHeader.tsx b/frontend/src/features/library/LibraryHeader.tsx
new file mode 100644
index 0000000..dfe6460
--- /dev/null
+++ b/frontend/src/features/library/LibraryHeader.tsx
@@ -0,0 +1,169 @@
+import { useLibrary } from './useLibrary'
+import { useAuth } from '../auth/useAuth'
+
+export const LibraryHeader = ({ currentTab, onTabChange }: { currentTab: 'library' | 'trash', onTabChange: (tab: 'library' | 'trash') => void }) => {
+  const { logout } = useAuth()
+  const { 
+    searchQuery, setSearchQuery, fetchDocuments, fetchTrash, 
+    selectedIds, clearSelection, selectAll, bulkDelete, bulkRestore, emptyTrash, documents
+  } = useLibrary()
+
+  const handleSearch = (e: React.FormEvent) => {
+    e.preventDefault()
+    if (currentTab === 'library') {
+      fetchDocuments(searchQuery)
+    }
+  }
+
+  const handleTabChange = (tab: 'library' | 'trash') => {
+    onTabChange(tab)
+    if (tab === 'library') {
+      fetchDocuments()
+    } else {
+      fetchTrash()
+    }
+  }
+
+  const isSelectionMode = selectedIds.size > 0
+  const allSelected = documents.length > 0 && selectedIds.size === documents.length
+
+  return (
+    <div className="sticky top-0 z-40 bg-white/80 dark:bg-gray-900/80 backdrop-blur-md border-b border-gray-200 dark:border-gray-800">
+      <div className="max-w-7xl mx-auto px-6 h-16 flex items-center justify-between gap-4">
+        
+        {/* Left: Branding & Tabs */}
+        <div className="flex items-center gap-8">
+          <div className="flex items-center gap-2">
+            <div className="w-8 h-8 bg-indigo-600 rounded-lg flex items-center justify-center shadow-lg shadow-indigo-500/30">
+              <span className="text-white font-bold text-xl leading-none">P</span>
+            </div>
+            <h1 className="text-xl font-bold text-gray-900 dark:text-white hidden sm:block">PaperJet</h1>
+          </div>
+          
+          <nav className="flex items-center gap-1 bg-gray-100 dark:bg-gray-800 p-1 rounded-lg">
+            <button
+              onClick={() => handleTabChange('library')}
+              className={`px-4 py-1.5 rounded-md text-sm font-medium transition-all ${
+                currentTab === 'library' 
+                  ? 'bg-white dark:bg-gray-700 text-gray-900 dark:text-white shadow-sm' 
+                  : 'text-gray-500 dark:text-gray-400 hover:text-gray-900 dark:hover:text-white'
+              }`}
+            >
+              Library
+            </button>
+            <button
+              onClick={() => handleTabChange('trash')}
+              className={`px-4 py-1.5 rounded-md text-sm font-medium transition-all ${
+                currentTab === 'trash' 
+                  ? 'bg-white dark:bg-gray-700 text-gray-900 dark:text-white shadow-sm' 
+                  : 'text-gray-500 dark:text-gray-400 hover:text-gray-900 dark:hover:text-white'
+              }`}
+            >
+              Trash
+            </button>
+          </nav>
+        </div>
+
+        {/* Right: Search & Actions */}
+        <div className="flex items-center gap-4 flex-1 justify-end">
+          {isSelectionMode ? (
+            <div className="flex items-center gap-3 bg-indigo-50 dark:bg-indigo-900/30 px-4 py-1.5 rounded-full border border-indigo-100 dark:border-indigo-800">
+              <span className="text-sm font-medium text-indigo-700 dark:text-indigo-300">
+                {selectedIds.size} selected
+              </span>
+              <div className="h-4 w-px bg-indigo-200 dark:bg-indigo-700"></div>
+              
+              <button onClick={allSelected ? clearSelection : selectAll} className="text-sm text-indigo-600 dark:text-indigo-400 hover:text-indigo-800 dark:hover:text-indigo-200 font-medium">
+                {allSelected ? 'Deselect All' : 'Select All'}
+              </button>
+              
+              {currentTab === 'library' ? (
+                <button 
+                  onClick={() => bulkDelete()}
+                  className="text-sm text-red-600 dark:text-red-400 hover:text-red-800 dark:hover:text-red-300 font-medium px-2 py-1 hover:bg-red-50 dark:hover:bg-red-900/30 rounded"
+                >
+                  Delete
+                </button>
+              ) : (
+                <>
+                  <button 
+                    onClick={() => bulkRestore()}
+                    className="text-sm text-green-600 dark:text-green-400 hover:text-green-800 dark:hover:text-green-300 font-medium px-2 py-1 hover:bg-green-50 dark:hover:bg-green-900/30 rounded"
+                  >
+                    Restore
+                  </button>
+                  <button 
+                    onClick={() => bulkDelete(true)}
+                    className="text-sm text-red-600 dark:text-red-400 hover:text-red-800 dark:hover:text-red-300 font-medium px-2 py-1 hover:bg-red-50 dark:hover:bg-red-900/30 rounded"
+                  >
+                    Delete Forever
+                  </button>
+                </>
+              )}
+            </div>
+          ) : (
+            <>
+              {currentTab === 'library' && (
+                <form onSubmit={handleSearch} className="relative hidden md:block max-w-md w-full">
+                  <div className="absolute inset-y-0 left-0 pl-3 flex items-center pointer-events-none">
+                    <svg className="h-4 w-4 text-gray-400" fill="none" viewBox="0 0 24 24" stroke="currentColor">
+                      <path strokeLinecap="round" strokeLinejoin="round" strokeWidth="2" d="M21 21l-6-6m2-5a7 7 0 11-14 0 7 7 0 0114 0z" />
+                    </svg>
+                  </div>
+                  <input
+                    type="text"
+                    value={searchQuery}
+                    onChange={(e) => setSearchQuery(e.target.value)}
+                    placeholder="Search documents..."
+                    className="block w-full pl-10 pr-3 py-2 border border-gray-200 dark:border-gray-700 rounded-xl leading-5 bg-gray-50 dark:bg-gray-800 text-gray-900 dark:text-gray-100 placeholder-gray-500 focus:outline-none focus:ring-2 focus:ring-indigo-500 focus:border-transparent sm:text-sm transition-all"
+                  />
+                </form>
+              )}
+              
+              {currentTab === 'trash' && (
+                <button
+                  onClick={() => emptyTrash()}
+                  className="text-sm font-medium text-red-600 dark:text-red-400 hover:text-red-800 dark:hover:text-red-300 transition-colors"
+                >
+                  Empty Trash
+                </button>
+              )}
+              
+              {currentTab === 'library' && (
+                <label className="cursor-pointer inline-flex items-center justify-center px-4 py-2 border border-transparent text-sm font-medium rounded-xl shadow-sm text-white bg-indigo-600 hover:bg-indigo-700 focus:outline-none focus:ring-2 focus:ring-offset-2 focus:ring-indigo-500 transition-all active:scale-95">
+                  <span>Upload PDF</span>
+                  <input 
+                    type="file" 
+                    accept="application/pdf"
+                    multiple
+                    className="hidden"
+                    onChange={(e) => {
+                      // We'll dispatch a custom event that UploadArea listens to, or just click its input
+                      // For simplicity, find the hidden file input in UploadArea and click it
+                      const uploader = document.querySelector('input[type="file"][multiple]') as HTMLInputElement
+                      if (uploader && uploader !== e.target) {
+                        uploader.files = e.target.files
+                        const event = new Event('change', { bubbles: true })
+                        uploader.dispatchEvent(event)
+                      }
+                    }}
+                  />
+                </label>
+              )}
+              
+              <button
+                onClick={logout}
+                className="p-2 text-gray-400 hover:text-gray-500 dark:hover:text-gray-300"
+                title="Logout"
+              >
+                <svg className="w-5 h-5" fill="none" viewBox="0 0 24 24" stroke="currentColor">
+                  <path strokeLinecap="round" strokeLinejoin="round" strokeWidth="2" d="M17 16l4-4m0 0l-4-4m4 4H7m6 4v1a3 3 0 01-3 3H6a3 3 0 01-3-3V7a3 3 0 013-3h4a3 3 0 013 3v1" />
+                </svg>
+              </button>
+            </>
+          )}
+        </div>
+      </div>
+    </div>
+  )
+}
diff --git a/frontend/src/features/library/UploadArea.tsx b/frontend/src/features/library/UploadArea.tsx
new file mode 100644
index 0000000..732e7ad
--- /dev/null
+++ b/frontend/src/features/library/UploadArea.tsx
@@ -0,0 +1,86 @@
+import { useRef, useState } from 'react'
+import { useLibrary } from './useLibrary'
+
+export const UploadArea = ({ children }: { children: React.ReactNode }) => {
+  const { uploadDocument } = useLibrary()
+  const [isDragging, setIsDragging] = useState(false)
+  const fileInputRef = useRef<HTMLInputElement>(null)
+
+  const handleDragOver = (e: React.DragEvent) => {
+    e.preventDefault()
+    e.stopPropagation()
+    setIsDragging(true)
+  }
+
+  const handleDragLeave = (e: React.DragEvent) => {
+    e.preventDefault()
+    e.stopPropagation()
+    setIsDragging(false)
+  }
+
+  const handleDrop = async (e: React.DragEvent) => {
+    e.preventDefault()
+    e.stopPropagation()
+    setIsDragging(false)
+    
+    if (e.dataTransfer.files && e.dataTransfer.files.length > 0) {
+      await processFiles(e.dataTransfer.files)
+    }
+  }
+
+  const handleFileChange = async (e: React.ChangeEvent<HTMLInputElement>) => {
+    if (e.target.files && e.target.files.length > 0) {
+      await processFiles(e.target.files)
+      // Reset input so the same file can be selected again
+      e.target.value = ''
+    }
+  }
+
+  const processFiles = async (files: FileList) => {
+    // For now, process one by one
+    for (let i = 0; i < files.length; i++) {
+      const file = files[i]
+      if (file.type === 'application/pdf') {
+        try {
+          await uploadDocument(file)
+        } catch (err) {
+          console.error('Failed to upload', file.name, err)
+          // Could show toast notification here
+        }
+      }
+    }
+  }
+
+  return (
+    <div 
+      className="relative min-h-screen"
+      onDragOver={handleDragOver}
+      onDragLeave={handleDragLeave}
+      onDrop={handleDrop}
+    >
+      <input 
+        type="file" 
+        accept="application/pdf"
+        ref={fileInputRef}
+        onChange={handleFileChange}
+        className="hidden"
+        multiple
+      />
+      
+      {/* Invisible overlay that appears when dragging to prevent flickering */}
+      {isDragging && (
+        <div className="absolute inset-0 z-50 bg-indigo-500/10 dark:bg-indigo-900/20 backdrop-blur-sm border-4 border-dashed border-indigo-500 dark:border-indigo-400 rounded-3xl m-4 flex items-center justify-center transition-all pointer-events-none">
+          <div className="bg-white/90 dark:bg-gray-800/90 px-8 py-6 rounded-2xl shadow-2xl flex flex-col items-center">
+            <svg className="w-16 h-16 text-indigo-500 mb-4 animate-bounce" fill="none" viewBox="0 0 24 24" stroke="currentColor">
+              <path strokeLinecap="round" strokeLinejoin="round" strokeWidth="2" d="M7 16a4 4 0 01-.88-7.903A5 5 0 1115.9 6L16 6a5 5 0 011 9.9M15 13l-3-3m0 0l-3 3m3-3v12" />
+            </svg>
+            <h3 className="text-2xl font-bold text-gray-900 dark:text-white">Drop PDFs here</h3>
+            <p className="text-gray-500 dark:text-gray-400 mt-2">Release to upload to your library</p>
+          </div>
+        </div>
+      )}
+
+      {children}
+    </div>
+  )
+}
diff --git a/frontend/src/features/library/api.ts b/frontend/src/features/library/api.ts
new file mode 100644
index 0000000..7023ca9
--- /dev/null
+++ b/frontend/src/features/library/api.ts
@@ -0,0 +1,47 @@
+import { api } from '@/lib/api/client'
+import type { DocumentListResponse, DocumentMeta, DocumentUpdateRequest, BulkRequest } from './types'
+
+export const libraryApi = {
+  getDocuments: (query = '', skip = 0, limit = 50) => {
+    const params = new URLSearchParams()
+    if (query) params.append('query', query)
+    params.append('skip', skip.toString())
+    params.append('limit', limit.toString())
+    return api.get<DocumentListResponse>(`/documents?${params.toString()}`)
+  },
+
+  getTrash: (skip = 0, limit = 50) => {
+    const params = new URLSearchParams()
+    params.append('skip', skip.toString())
+    params.append('limit', limit.toString())
+    return api.get<DocumentListResponse>(`/documents/trash?${params.toString()}`)
+  },
+
+  uploadDocument: (file: File) => {
+    const formData = new FormData()
+    formData.append('file', file)
+    return api.upload<DocumentMeta>('/documents', formData)
+  },
+
+  getDocument: (id: string) => api.get<DocumentMeta>(`/documents/${id}`),
+
+  updateDocument: (id: string, data: DocumentUpdateRequest) => 
+    api.patch<DocumentMeta>(`/documents/${id}`, data),
+
+  deleteDocument: (id: string, permanent = false) => 
+    api.delete<{ status: string }>(`/documents/${id}?permanent=${permanent}`),
+
+  restoreDocument: (id: string) => 
+    api.post<DocumentMeta>(`/documents/${id}/restore`),
+
+  bulkDelete: (data: BulkRequest) => 
+    api.post<{ status: string, count: number }>('/documents/bulk-delete', data),
+
+  bulkRestore: (data: BulkRequest) => 
+    api.post<{ status: string, count: number }>('/documents/bulk-restore', data),
+
+  emptyTrash: () => 
+    api.post<{ status: string, deleted: number }>('/documents/trash/empty'),
+
+  getThumbnailUrl: (id: string) => `/api/v1/documents/${id}/thumbnail`,
+}
diff --git a/frontend/src/features/library/types.ts b/frontend/src/features/library/types.ts
new file mode 100644
index 0000000..efa827c
--- /dev/null
+++ b/frontend/src/features/library/types.ts
@@ -0,0 +1,25 @@
+export interface DocumentMeta {
+  id: string
+  title: string
+  filename: string
+  mime_type: string
+  size_bytes: number
+  in_trash: boolean
+  created_at: string
+  updated_at: string
+  deleted_at: string | null
+}
+
+export interface DocumentListResponse {
+  items: DocumentMeta[]
+  total: number
+}
+
+export interface DocumentUpdateRequest {
+  title?: string
+  in_trash?: boolean
+}
+
+export interface BulkRequest {
+  ids: string[]
+}
diff --git a/frontend/src/features/library/useLibrary.ts b/frontend/src/features/library/useLibrary.ts
new file mode 100644
index 0000000..4634747
--- /dev/null
+++ b/frontend/src/features/library/useLibrary.ts
@@ -0,0 +1,180 @@
+import { create } from 'zustand'
+import { libraryApi } from './api'
+import type { DocumentMeta } from './types'
+
+interface LibraryState {
+  documents: DocumentMeta[]
+  total: number
+  isLoading: boolean
+  error: string | null
+  searchQuery: string
+  
+  // Selection
+  selectedIds: Set<string>
+  toggleSelection: (id: string) => void
+  clearSelection: () => void
+  selectAll: () => void
+
+  // Actions
+  fetchDocuments: (query?: string) => Promise<void>
+  fetchTrash: () => Promise<void>
+  uploadDocument: (file: File) => Promise<DocumentMeta>
+  deleteDocument: (id: string, permanent?: boolean) => Promise<void>
+  restoreDocument: (id: string) => Promise<void>
+  bulkDelete: (permanent?: boolean) => Promise<void>
+  bulkRestore: () => Promise<void>
+  emptyTrash: () => Promise<void>
+  setSearchQuery: (query: string) => void
+}
+
+export const useLibrary = create<LibraryState>((set, get) => ({
+  documents: [],
+  total: 0,
+  isLoading: false,
+  error: null,
+  searchQuery: '',
+  selectedIds: new Set(),
+
+  toggleSelection: (id) => set((state) => {
+    const newSelection = new Set(state.selectedIds)
+    if (newSelection.has(id)) newSelection.delete(id)
+    else newSelection.add(id)
+    return { selectedIds: newSelection }
+  }),
+
+  clearSelection: () => set({ selectedIds: new Set() }),
+  
+  selectAll: () => set((state) => ({ 
+    selectedIds: new Set(state.documents.map(d => d.id)) 
+  })),
+
+  setSearchQuery: (query) => set({ searchQuery: query }),
+
+  fetchDocuments: async (query = '') => {
+    set({ isLoading: true, error: null, searchQuery: query })
+    try {
+      const data = await libraryApi.getDocuments(query)
+      set({ documents: data.items, total: data.total, isLoading: false })
+    } catch (err: any) {
+      set({ error: err.error?.message || err.message, isLoading: false })
+    }
+  },
+
+  fetchTrash: async () => {
+    set({ isLoading: true, error: null, searchQuery: '' })
+    try {
+      const data = await libraryApi.getTrash()
+      set({ documents: data.items, total: data.total, isLoading: false })
+    } catch (err: any) {
+      set({ error: err.error?.message || err.message, isLoading: false })
+    }
+  },
+
+  uploadDocument: async (file: File) => {
+    set({ isLoading: true, error: null })
+    try {
+      const newDoc = await libraryApi.uploadDocument(file)
+      set((state) => ({ 
+        documents: [newDoc, ...state.documents],
+        total: state.total + 1,
+        isLoading: false 
+      }))
+      return newDoc
+    } catch (err: any) {
+      set({ error: err.error?.message || err.message, isLoading: false })
+      throw err
+    }
+  },
+
+  deleteDocument: async (id: string, permanent = false) => {
+    set({ isLoading: true, error: null })
+    try {
+      await libraryApi.deleteDocument(id, permanent)
+      set((state) => ({
+        documents: state.documents.filter(d => d.id !== id),
+        total: state.total - 1,
+        selectedIds: new Set(Array.from(state.selectedIds).filter(sid => sid !== id)),
+        isLoading: false
+      }))
+    } catch (err: any) {
+      set({ error: err.error?.message || err.message, isLoading: false })
+      throw err
+    }
+  },
+
+  restoreDocument: async (id: string) => {
+    set({ isLoading: true, error: null })
+    try {
+      await libraryApi.restoreDocument(id)
+      set((state) => ({
+        documents: state.documents.filter(d => d.id !== id),
+        total: state.total - 1,
+        selectedIds: new Set(Array.from(state.selectedIds).filter(sid => sid !== id)),
+        isLoading: false
+      }))
+    } catch (err: any) {
+      set({ error: err.error?.message || err.message, isLoading: false })
+      throw err
+    }
+  },
+
+  bulkDelete: async (permanent = false) => {
+    const { selectedIds } = get()
+    if (selectedIds.size === 0) return
+
+    set({ isLoading: true, error: null })
+    try {
+      if (permanent) {
+        // Must delete one by one if permanent
+        await Promise.all(Array.from(selectedIds).map(id => libraryApi.deleteDocument(id, true)))
+      } else {
+        await libraryApi.bulkDelete({ ids: Array.from(selectedIds) })
+      }
+      
+      set((state) => ({
+        documents: state.documents.filter(d => !state.selectedIds.has(d.id)),
+        total: state.total - state.selectedIds.size,
+        selectedIds: new Set(),
+        isLoading: false
+      }))
+    } catch (err: any) {
+      set({ error: err.error?.message || err.message, isLoading: false })
+      throw err
+    }
+  },
+
+  bulkRestore: async () => {
+    const { selectedIds } = get()
+    if (selectedIds.size === 0) return
+
+    set({ isLoading: true, error: null })
+    try {
+      await libraryApi.bulkRestore({ ids: Array.from(selectedIds) })
+      set((state) => ({
+        documents: state.documents.filter(d => !state.selectedIds.has(d.id)),
+        total: state.total - state.selectedIds.size,
+        selectedIds: new Set(),
+        isLoading: false
+      }))
+    } catch (err: any) {
+      set({ error: err.error?.message || err.message, isLoading: false })
+      throw err
+    }
+  },
+
+  emptyTrash: async () => {
+    set({ isLoading: true, error: null })
+    try {
+      await libraryApi.emptyTrash()
+      set({
+        documents: [],
+        total: 0,
+        selectedIds: new Set(),
+        isLoading: false
+      })
+    } catch (err: any) {
+      set({ error: err.error?.message || err.message, isLoading: false })
+      throw err
+    }
+  }
+}))
diff --git a/frontend/src/index.css b/frontend/src/index.css
index eebfc7f..1fda1df 100644
--- a/frontend/src/index.css
+++ b/frontend/src/index.css
@@ -1,5 +1,8 @@
 @import "tailwindcss";
 
+/* Force light mode by requiring a .dark class that we never add */
+@custom-variant dark (&:where(.dark, .dark *));
+
 /*
  * PaperJet Design Tokens
  *
@@ -36,27 +39,6 @@
   --color-warning: oklch(0.75 0.16 65);
   --color-error: oklch(0.58 0.20 25);
 
-  /* Spacing scale */
-  --spacing-xs: 0.25rem;
-  --spacing-sm: 0.5rem;
-  --spacing-md: 1rem;
-  --spacing-lg: 1.5rem;
-  --spacing-xl: 2rem;
-  --spacing-2xl: 3rem;
-
-  /* Border radius */
-  --radius-sm: 0.375rem;
-  --radius-md: 0.5rem;
-  --radius-lg: 0.75rem;
-  --radius-xl: 1rem;
-  --radius-full: 9999px;
-
-  /* Shadows */
-  --shadow-sm: 0 1px 2px 0 oklch(0 0 0 / 0.04);
-  --shadow-md: 0 4px 6px -1px oklch(0 0 0 / 0.06), 0 2px 4px -2px oklch(0 0 0 / 0.04);
-  --shadow-lg: 0 10px 15px -3px oklch(0 0 0 / 0.06), 0 4px 6px -4px oklch(0 0 0 / 0.04);
-  --shadow-xl: 0 20px 25px -5px oklch(0 0 0 / 0.08), 0 8px 10px -6px oklch(0 0 0 / 0.04);
-
   /* Typography */
   --font-sans: 'Inter', ui-sans-serif, system-ui, -apple-system, sans-serif;
   --font-mono: 'JetBrains Mono', ui-monospace, monospace;
diff --git a/frontend/src/lib/api/client.ts b/frontend/src/lib/api/client.ts
index 89d4a0d..5dc2e0c 100644
--- a/frontend/src/lib/api/client.ts
+++ b/frontend/src/lib/api/client.ts
@@ -75,13 +75,21 @@ async function apiFetch<T>(
   }
 
   // Parse response
-  const data = await response.json()
+  let data: any = {}
+  try {
+    const text = await response.text()
+    if (text) {
+      data = JSON.parse(text)
+    }
+  } catch (err) {
+    // If it's not JSON, we'll just fall back to the empty object
+  }
 
   // Handle error responses
   if (!response.ok) {
-    const error: ApiError = data.error ?? {
-      code: 'unknown',
-      message: response.statusText,
+    const error: ApiError = {
+      code: data.error?.code ?? 'unknown',
+      message: data.error?.message ?? data.detail ?? response.statusText,
     }
     throw new ApiRequestError(response.status, error)
   }
@@ -150,8 +158,17 @@ export const api = {
     }
 
     if (!response.ok) {
-      const data = await response.json()
-      throw new ApiRequestError(response.status, data.error)
+      let data: any = {}
+      try {
+        const text = await response.text()
+        if (text) data = JSON.parse(text)
+      } catch (err) {}
+      
+      const error: ApiError = {
+        code: data.error?.code ?? 'unknown',
+        message: data.error?.message ?? data.detail ?? response.statusText,
+      }
+      throw new ApiRequestError(response.status, error)
     }
 
     return response.blob()
diff --git a/frontend/src/pages/HomePage.tsx b/frontend/src/pages/HomePage.tsx
index 1c956f6..1d83f64 100644
--- a/frontend/src/pages/HomePage.tsx
+++ b/frontend/src/pages/HomePage.tsx
@@ -1,61 +1,36 @@
-/**
- * Home page — recently edited, library, and trash tabs.
- * Full implementation in Phase 1.
- */
+import { useEffect, useState } from 'react'
+import { LibraryHeader } from '../features/library/LibraryHeader'
+import { UploadArea } from '../features/library/UploadArea'
+import { DocumentGrid } from '../features/library/DocumentGrid'
+import { useLibrary } from '../features/library/useLibrary'
+
 export function HomePage() {
+  const [currentTab, setCurrentTab] = useState<'library' | 'trash'>('library')
+  const { fetchDocuments, fetchTrash } = useLibrary()
+
+  // Initial fetch
+  useEffect(() => {
+    if (currentTab === 'library') {
+      fetchDocuments()
+    } else {
+      fetchTrash()
+    }
+  }, [currentTab, fetchDocuments, fetchTrash])
+
   return (
-    <div className="min-h-screen bg-neutral-50">
-      {/* Header */}
-      <header className="border-b border-neutral-200 bg-white">
-        <div className="mx-auto flex max-w-7xl items-center justify-between px-6 py-4">
-          <h1 className="text-xl font-semibold text-neutral-900">PaperJet</h1>
-          <button
-            type="button"
-            className="rounded-lg bg-accent-500 px-4 py-2 text-sm font-medium text-white
-                       transition-colors duration-150 hover:bg-accent-600"
-          >
-            Upload PDF
-          </button>
-        </div>
-      </header>
-
-      {/* Main content */}
-      <main className="mx-auto max-w-7xl px-6 py-8">
-        {/* Tab navigation */}
-        <nav className="mb-8 flex gap-1 rounded-lg bg-neutral-100 p-1">
-          <button
-            type="button"
-            className="rounded-md bg-white px-4 py-2 text-sm font-medium text-neutral-900
-                       shadow-sm transition-colors"
-          >
-            Recently Edited
-          </button>
-          <button
-            type="button"
-            className="rounded-md px-4 py-2 text-sm font-medium text-neutral-500
-                       transition-colors hover:text-neutral-700"
-          >
-            Library
-          </button>
-          <button
-            type="button"
-            className="rounded-md px-4 py-2 text-sm font-medium text-neutral-500
-                       transition-colors hover:text-neutral-700"
-          >
-            Trash
-          </button>
-        </nav>
-
-        {/* Empty state placeholder */}
-        <div className="flex flex-col items-center justify-center rounded-xl border-2 border-dashed
-                        border-neutral-300 py-20 text-center">
-          <div className="mb-4 text-5xl">📄</div>
-          <h2 className="text-lg font-medium text-neutral-700">No documents yet</h2>
-          <p className="mt-1 text-sm text-neutral-500">
-            Upload a PDF to get started
-          </p>
-        </div>
+    <div className="min-h-screen bg-gray-50 dark:bg-gray-950 transition-colors">
+      <LibraryHeader currentTab={currentTab} onTabChange={setCurrentTab} />
+      
+      <main className="max-w-7xl mx-auto px-6 py-8">
+        {currentTab === 'library' ? (
+          <UploadArea>
+            <DocumentGrid isTrash={false} />
+          </UploadArea>
+        ) : (
+          <DocumentGrid isTrash={true} />
+        )}
       </main>
     </div>
   )
 }
+
diff --git a/frontend/src/pages/LoginPage.tsx b/frontend/src/pages/LoginPage.tsx
index 6761465..91d00a1 100644
--- a/frontend/src/pages/LoginPage.tsx
+++ b/frontend/src/pages/LoginPage.tsx
@@ -1,40 +1,13 @@
-/**
- * Login page — handles both first-run password setup and normal login.
- * Full implementation in Phase 1.
- */
+import { LoginForm } from '@/features/auth/LoginForm'
+
 export function LoginPage() {
   return (
-    <div className="flex min-h-screen items-center justify-center bg-neutral-50">
-      <div className="w-full max-w-md rounded-xl bg-white p-8 shadow-lg">
-        <div className="mb-6 text-center">
-          <h1 className="text-2xl font-semibold text-neutral-900">PaperJet</h1>
-          <p className="mt-2 text-sm text-neutral-500">
-            Self-hosted PDF editor
-          </p>
-        </div>
-        <div className="space-y-4">
-          <div>
-            <label htmlFor="password" className="block text-sm font-medium text-neutral-700">
-              Password
-            </label>
-            <input
-              id="password"
-              type="password"
-              className="mt-1 w-full rounded-lg border border-neutral-300 px-3 py-2 text-sm
-                         placeholder:text-neutral-400 focus:border-accent-500 focus:outline-none
-                         focus:ring-2 focus:ring-accent-200"
-              placeholder="Enter your password"
-            />
-          </div>
-          <button
-            type="button"
-            className="w-full rounded-lg bg-accent-500 px-4 py-2.5 text-sm font-medium text-white
-                       transition-colors duration-150 hover:bg-accent-600 active:bg-accent-700"
-          >
-            Sign In
-          </button>
-        </div>
+    <div className="flex min-h-screen items-center justify-center bg-gray-50 dark:bg-gray-900 bg-[url('https://www.transparenttextures.com/patterns/cubes.png')] transition-all">
+      <div className="absolute inset-0 bg-indigo-900/10 dark:bg-black/50 backdrop-blur-[2px]"></div>
+      <div className="relative z-10 w-full flex justify-center px-4">
+        <LoginForm />
       </div>
     </div>
   )
 }
+
diff --git a/frontend/src/pages/SetupPage.tsx b/frontend/src/pages/SetupPage.tsx
new file mode 100644
index 0000000..87efa3b
--- /dev/null
+++ b/frontend/src/pages/SetupPage.tsx
@@ -0,0 +1,12 @@
+import { SetupForm } from '@/features/auth/SetupForm'
+
+export function SetupPage() {
+  return (
+    <div className="flex min-h-screen items-center justify-center bg-gray-50 dark:bg-gray-900 bg-[url('https://www.transparenttextures.com/patterns/cubes.png')] transition-all">
+      <div className="absolute inset-0 bg-indigo-900/10 dark:bg-black/50 backdrop-blur-[2px]"></div>
+      <div className="relative z-10 w-full flex justify-center px-4">
+        <SetupForm />
+      </div>
+    </div>
+  )
+}
diff --git a/frontend/tsconfig.app.json b/frontend/tsconfig.app.json
index afa7145..6dd34cf 100644
--- a/frontend/tsconfig.app.json
+++ b/frontend/tsconfig.app.json
@@ -22,7 +22,13 @@
     "noUnusedLocals": true,
     "noUnusedParameters": true,
     "erasableSyntaxOnly": true,
-    "noFallthroughCasesInSwitch": true
+    "noFallthroughCasesInSwitch": true,
+    "ignoreDeprecations": "6.0",
+
+    "baseUrl": ".",
+    "paths": {
+      "@/*": ["src/*"]
+    }
   },
   "include": ["src"]
 }
diff --git a/frontend/vite.config.ts b/frontend/vite.config.ts
index 3b11ca2..4072feb 100644
--- a/frontend/vite.config.ts
+++ b/frontend/vite.config.ts
@@ -1,6 +1,7 @@
 import { defineConfig } from 'vite'
 import react from '@vitejs/plugin-react'
 import tailwindcss from '@tailwindcss/vite'
+import path from 'path'
 
 // https://vite.dev/config/
 export default defineConfig({
@@ -8,6 +9,11 @@ export default defineConfig({
     react(),
     tailwindcss(),
   ],
+  resolve: {
+    alias: {
+      '@': path.resolve(__dirname, './src'),
+    },
+  },
   server: {
     // Dev proxy: route /api requests to the backend
     proxy: {