feat(firebase): support Firestore & Realtime DB as Preswald data sources #676
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Closes #527
What’s new
type = "firebase"
support inpreswald.toml
for both Firestore (default) and Realtime Database.load_firebase_source()
inpreswald/engine/managers/data.py
:credentials_path
&project_id
mode = "firestore"
vs.mode = "realtime"
pd.json_normalize(..., sep=".")
collection
/path
errors and invalid modesFirebaseSource
class inDataManager.connect()
to register the DataFrame in DuckDB.docs/configuration.mdx
: examplepreswald.toml
snippetsdocs/data‑sources.mdx
: compatibility matrix row forfirebase
Motivation
Many teams rely on Firebase for real‑time analytics and IoT feeds. This PR enables native, “no‑SQL” dashboards directly from Firestore or Realtime DB.