feat(hub): add production hub — config, auth, API routers, tests

config.py: TOML + env var priority. auth.py: Argon2id passwords,
JWT EdDSA with jti, refresh token hashed (blake3). Routers:
hub (info/pubkey), users (register/login/refresh/pubkeys),
nodes (announce/get), groups (create/gek-bundle/gek-retrieve).
Rate limiting via slowapi. app.py factory with lifespan.

All 40 tests pass (SQLite in-memory, no PostgreSQL required).
Fix: remove tests/__init__.py to resolve namespace conflicts.

Co-Authored-By: Claude Sonnet 4.6 (1M context) <noreply@anthropic.com>

1 files changed, 47 insertions, 0 deletions

diff --git a/packages/meshbay-hub/src/meshbay_hub/api/deps.py b/packages/meshbay-hub/src/meshbay_hub/api/deps.py
new file mode 100644
index 0000000..cb637f3
--- /dev/null
+++ b/packages/meshbay-hub/src/meshbay_hub/api/deps.py
@@ -0,0 +1,47 @@
+"""
+FastAPI shared dependencies — injected via Depends().
+"""
+
+from collections.abc import AsyncGenerator
+
+from fastapi import Depends, Header, HTTPException, status
+from sqlalchemy.ext.asyncio import AsyncSession
+from sqlalchemy import select
+
+from meshbay_hub.auth import decode_access_token
+from meshbay_hub.db.engine import get_db
+from meshbay_hub.db.models import User
+
+
+async def get_current_user(
+    authorization: str = Header(...),
+    db: AsyncSession = Depends(get_db),
+) -> User:
+    """
+    Verify the JWT bearer token and return the User from the database.
+    Node clients: verified locally with hub PK — no DB round-trip needed.
+    Hub API (web): must confirm user still exists and is active.
+    """
+    try:
+        scheme, token = authorization.split(None, 1)
+        if scheme.lower() != "bearer":
+            raise ValueError
+        payload = decode_access_token(token)
+    except Exception:
+        raise HTTPException(
+            status_code=status.HTTP_401_UNAUTHORIZED,
+            detail="Invalid or expired token",
+            headers={"WWW-Authenticate": "Bearer"},
+        )
+
+    result = await db.execute(
+        select(User).where(User.id == payload["sub"]))
+    user = result.scalar_one_or_none()
+
+    if user is None:
+        raise HTTPException(status_code=status.HTTP_401_UNAUTHORIZED,
+                            detail="User not found")
+    if user.status != "active":
+        raise HTTPException(status_code=status.HTTP_403_FORBIDDEN,
+                            detail=f"Account {user.status}")
+    return user