Add multi-user auth system and admin panel

- User model with email/hashed_password/is_admin/notification_prefs
- JWT auth: POST /api/auth/register, /login, /me
- First registered user auto-promoted to admin
- Migration 0005: users table + user_id FK on follows (clears global follows)
- Follows, dashboard, settings, admin endpoints all require authentication
- Admin endpoints (settings writes, celery triggers) require is_admin
- Frontend: login/register pages, Zustand auth store (localStorage persist)
- AuthGuard component gates all app routes, shows app shell only when authed
- Sidebar shows user email + logout; Admin nav link visible to admins only
- Admin panel (/settings): user list with delete + promote/demote, LLM config,
  data source settings, and manual celery controls

Authored-By: Jack Levy

backend/app/api/admin.py

@@ -1,35 +1,109 @@
-from fastapi import APIRouter
+from fastapi import APIRouter, Depends, HTTPException
+from sqlalchemy import func, select
+from sqlalchemy.ext.asyncio import AsyncSession
+
+from app.core.dependencies import get_current_admin
+from app.database import get_db
+from app.models import Follow
+from app.models.user import User
+from app.schemas.schemas import UserResponse
 
 router = APIRouter()
 
 
+# ── User Management ───────────────────────────────────────────────────────────
+
+class UserWithStats(UserResponse):
+    follow_count: int
+
+
+@router.get("/users", response_model=list[UserWithStats])
+async def list_users(
+    db: AsyncSession = Depends(get_db),
+    current_user: User = Depends(get_current_admin),
+):
+    """List all users with their follow counts."""
+    users_result = await db.execute(select(User).order_by(User.created_at))
+    users = users_result.scalars().all()
+
+    counts_result = await db.execute(
+        select(Follow.user_id, func.count(Follow.id).label("cnt"))
+        .group_by(Follow.user_id)
+    )
+    counts = {row.user_id: row.cnt for row in counts_result}
+
+    return [
+        UserWithStats(
+            id=u.id,
+            email=u.email,
+            is_admin=u.is_admin,
+            notification_prefs=u.notification_prefs or {},
+            created_at=u.created_at,
+            follow_count=counts.get(u.id, 0),
+        )
+        for u in users
+    ]
+
+
+@router.delete("/users/{user_id}", status_code=204)
+async def delete_user(
+    user_id: int,
+    db: AsyncSession = Depends(get_db),
+    current_user: User = Depends(get_current_admin),
+):
+    """Delete a user account (cascades to their follows). Cannot delete yourself."""
+    if user_id == current_user.id:
+        raise HTTPException(status_code=400, detail="Cannot delete your own account")
+    user = await db.get(User, user_id)
+    if not user:
+        raise HTTPException(status_code=404, detail="User not found")
+    await db.delete(user)
+    await db.commit()
+
+
+@router.patch("/users/{user_id}/toggle-admin", response_model=UserResponse)
+async def toggle_admin(
+    user_id: int,
+    db: AsyncSession = Depends(get_db),
+    current_user: User = Depends(get_current_admin),
+):
+    """Promote or demote a user's admin status."""
+    if user_id == current_user.id:
+        raise HTTPException(status_code=400, detail="Cannot change your own admin status")
+    user = await db.get(User, user_id)
+    if not user:
+        raise HTTPException(status_code=404, detail="User not found")
+    user.is_admin = not user.is_admin
+    await db.commit()
+    await db.refresh(user)
+    return user
+
+
+# ── Celery Tasks ──────────────────────────────────────────────────────────────
+
 @router.post("/trigger-poll")
-async def trigger_poll():
-    """Manually trigger a Congress.gov poll without waiting for the Beat schedule."""
+async def trigger_poll(current_user: User = Depends(get_current_admin)):
     from app.workers.congress_poller import poll_congress_bills
     task = poll_congress_bills.delay()
     return {"task_id": task.id, "status": "queued"}
 
 
 @router.post("/trigger-member-sync")
-async def trigger_member_sync():
-    """Manually trigger a member sync."""
+async def trigger_member_sync(current_user: User = Depends(get_current_admin)):
     from app.workers.congress_poller import sync_members
     task = sync_members.delay()
     return {"task_id": task.id, "status": "queued"}
 
 
 @router.post("/trigger-trend-scores")
-async def trigger_trend_scores():
-    """Manually trigger trend score calculation."""
+async def trigger_trend_scores(current_user: User = Depends(get_current_admin)):
     from app.workers.trend_scorer import calculate_all_trend_scores
     task = calculate_all_trend_scores.delay()
     return {"task_id": task.id, "status": "queued"}
 
 
 @router.get("/task-status/{task_id}")
-async def get_task_status(task_id: str):
-    """Check the status of an async task."""
+async def get_task_status(task_id: str, current_user: User = Depends(get_current_admin)):
     from app.workers.celery_app import celery_app
     result = celery_app.AsyncResult(task_id)
     return {

backend/app/api/auth.py

@@ -0,0 +1,58 @@
+from fastapi import APIRouter, Depends, HTTPException, status
+from sqlalchemy import func, select
+from sqlalchemy.ext.asyncio import AsyncSession
+
+from app.core.dependencies import get_current_user
+from app.core.security import create_access_token, hash_password, verify_password
+from app.database import get_db
+from app.models.user import User
+from app.schemas.schemas import TokenResponse, UserCreate, UserResponse
+
+router = APIRouter()
+
+
+@router.post("/register", response_model=TokenResponse, status_code=201)
+async def register(body: UserCreate, db: AsyncSession = Depends(get_db)):
+    if len(body.password) < 8:
+        raise HTTPException(status_code=400, detail="Password must be at least 8 characters")
+    if "@" not in body.email:
+        raise HTTPException(status_code=400, detail="Invalid email address")
+
+    # Check for duplicate email
+    existing = await db.execute(select(User).where(User.email == body.email.lower()))
+    if existing.scalar_one_or_none():
+        raise HTTPException(status_code=409, detail="Email already registered")
+
+    # First registered user becomes admin
+    count_result = await db.execute(select(func.count()).select_from(User))
+    is_first_user = count_result.scalar() == 0
+
+    user = User(
+        email=body.email.lower(),
+        hashed_password=hash_password(body.password),
+        is_admin=is_first_user,
+    )
+    db.add(user)
+    await db.commit()
+    await db.refresh(user)
+
+    return TokenResponse(access_token=create_access_token(user.id), user=user)
+
+
+@router.post("/login", response_model=TokenResponse)
+async def login(body: UserCreate, db: AsyncSession = Depends(get_db)):
+    result = await db.execute(select(User).where(User.email == body.email.lower()))
+    user = result.scalar_one_or_none()
+
+    if not user or not verify_password(body.password, user.hashed_password):
+        raise HTTPException(
+            status_code=status.HTTP_401_UNAUTHORIZED,
+            detail="Incorrect email or password",
+        )
+
+    return TokenResponse(access_token=create_access_token(user.id), user=user)
+
+
+@router.get("/me", response_model=UserResponse)
+async def me(current_user: User = Depends(get_current_user)):
+    return current_user

backend/app/api/dashboard.py

@@ -6,17 +6,24 @@ from sqlalchemy import desc, select
 from sqlalchemy.ext.asyncio import AsyncSession
 from sqlalchemy.orm import selectinload
 
+from app.core.dependencies import get_current_user
 from app.database import get_db
 from app.models import Bill, BillBrief, Follow, TrendScore
+from app.models.user import User
 from app.schemas.schemas import BillSchema
 
 router = APIRouter()
 
 
 @router.get("")
-async def get_dashboard(db: AsyncSession = Depends(get_db)):
-    # Load all follows
-    follows_result = await db.execute(select(Follow))
+async def get_dashboard(
+    db: AsyncSession = Depends(get_db),
+    current_user: User = Depends(get_current_user),
+):
+    # Load follows for the current user
+    follows_result = await db.execute(
+        select(Follow).where(Follow.user_id == current_user.id)
+    )
     follows = follows_result.scalars().all()
 
     followed_bill_ids = [f.follow_value for f in follows if f.follow_type == "bill"]

backend/app/api/follows.py

@@ -3,8 +3,10 @@ from sqlalchemy import select
 from sqlalchemy.exc import IntegrityError
 from sqlalchemy.ext.asyncio import AsyncSession
 
+from app.core.dependencies import get_current_user
 from app.database import get_db
 from app.models import Follow
+from app.models.user import User
 from app.schemas.schemas import FollowCreate, FollowSchema
 
 router = APIRouter()
@@ -13,16 +15,31 @@ VALID_FOLLOW_TYPES = {"bill", "member", "topic"}
 
 
 @router.get("", response_model=list[FollowSchema])
-async def list_follows(db: AsyncSession = Depends(get_db)):
-    result = await db.execute(select(Follow).order_by(Follow.created_at.desc()))
+async def list_follows(
+    db: AsyncSession = Depends(get_db),
+    current_user: User = Depends(get_current_user),
+):
+    result = await db.execute(
+        select(Follow)
+        .where(Follow.user_id == current_user.id)
+        .order_by(Follow.created_at.desc())
+    )
     return result.scalars().all()
 
 
 @router.post("", response_model=FollowSchema, status_code=201)
-async def add_follow(body: FollowCreate, db: AsyncSession = Depends(get_db)):
+async def add_follow(
+    body: FollowCreate,
+    db: AsyncSession = Depends(get_db),
+    current_user: User = Depends(get_current_user),
+):
     if body.follow_type not in VALID_FOLLOW_TYPES:
         raise HTTPException(status_code=400, detail=f"follow_type must be one of {VALID_FOLLOW_TYPES}")
-    follow = Follow(follow_type=body.follow_type, follow_value=body.follow_value)
+    follow = Follow(
+        user_id=current_user.id,
+        follow_type=body.follow_type,
+        follow_value=body.follow_value,
+    )
     db.add(follow)
     try:
         await db.commit()
@@ -32,6 +49,7 @@ async def add_follow(body: FollowCreate, db: AsyncSession = Depends(get_db)):
         # Already following — return existing
         result = await db.execute(
             select(Follow).where(
+                Follow.user_id == current_user.id,
                 Follow.follow_type == body.follow_type,
                 Follow.follow_value == body.follow_value,
             )
@@ -41,9 +59,15 @@ async def add_follow(body: FollowCreate, db: AsyncSession = Depends(get_db)):
 
 
 @router.delete("/{follow_id}", status_code=204)
-async def remove_follow(follow_id: int, db: AsyncSession = Depends(get_db)):
+async def remove_follow(
+    follow_id: int,
+    db: AsyncSession = Depends(get_db),
+    current_user: User = Depends(get_current_user),
+):
     follow = await db.get(Follow, follow_id)
     if not follow:
         raise HTTPException(status_code=404, detail="Follow not found")
+    if follow.user_id != current_user.id:
+        raise HTTPException(status_code=403, detail="Not your follow")
     await db.delete(follow)
     await db.commit()

backend/app/api/settings.py

@@ -3,15 +3,20 @@ from sqlalchemy import select
 from sqlalchemy.ext.asyncio import AsyncSession
 
 from app.config import settings
+from app.core.dependencies import get_current_admin, get_current_user
 from app.database import get_db
 from app.models import AppSetting
+from app.models.user import User
 from app.schemas.schemas import SettingUpdate, SettingsResponse
 
 router = APIRouter()
 
 
 @router.get("", response_model=SettingsResponse)
-async def get_settings(db: AsyncSession = Depends(get_db)):
+async def get_settings(
+    db: AsyncSession = Depends(get_db),
+    current_user: User = Depends(get_current_user),
+):
     """Return current effective settings (env + DB overrides)."""
     # DB overrides take precedence over env vars
     overrides: dict[str, str] = {}
@@ -29,7 +34,11 @@ async def get_settings(db: AsyncSession = Depends(get_db)):
 
 
 @router.put("")
-async def update_setting(body: SettingUpdate, db: AsyncSession = Depends(get_db)):
+async def update_setting(
+    body: SettingUpdate,
+    db: AsyncSession = Depends(get_db),
+    current_user: User = Depends(get_current_admin),
+):
     """Update a runtime setting."""
     ALLOWED_KEYS = {"llm_provider", "llm_model", "congress_poll_interval_minutes"}
     if body.key not in ALLOWED_KEYS:
@@ -46,7 +55,7 @@ async def update_setting(body: SettingUpdate, db: AsyncSession = Depends(get_db)
 
 
 @router.post("/test-llm")
-async def test_llm_connection():
+async def test_llm_connection(current_user: User = Depends(get_current_admin)):
     """Test that the configured LLM provider responds correctly."""
     from app.services.llm_service import get_llm_provider
     try: