[FIX] Replace TlDraw with ExcaliDraw

README.md

@@ -4,7 +4,7 @@
 
 ## Features
 
-- **Infinite canvas** — Draw shapes, sticky notes, and connectors with [tldraw](https://tldraw.dev)
+- **Infinite canvas** — Draw shapes, sticky notes, and connectors with [Excalidraw](https://excalidraw.com)
 - **Workspaces & boards** — Organize work by workspace; star and revisit recent boards
 - **Real-time collaboration** — Live updates via WebSockets and Redis pub/sub
 - **Auth** — Email/password and OAuth (GitHub, Google)
@@ -14,7 +14,7 @@
 
 | Layer      | Stack |
 |-----------|--------|
-| Frontend  | React 19, Vite 7, TypeScript, Tailwind CSS 4, tldraw, Zustand, react-router-dom |
+| Frontend  | React 19, Vite 7, TypeScript, Tailwind CSS 4, Excalidraw, Zustand, react-router-dom |
 | Backend   | FastAPI, Python 3.12+, SQLAlchemy, Alembic, Pydantic |
 | Data      | PostgreSQL 17, Redis 7 |
 | Auth      | JWT, bcrypt, OAuth 2 (GitHub, Google) |

api/app/alembic/versions/2bca60200873_init_initial_migration.py → api/app/alembic/versions/24b35055e774_init_initial_migration.py

@@ -1,8 +1,8 @@
 """[INIT] Initial migration
 
-Revision ID: 2bca60200873
+Revision ID: 24b35055e774
 Revises:
-Create Date: 2026-03-13 22:02:16.013906
+Create Date: 2026-03-14 18:56:46.209221
 
 """
 
@@ -13,7 +13,7 @@
 from sqlalchemy.dialects import postgresql
 
 # revision identifiers, used by Alembic.
-revision: str = "2bca60200873"
+revision: str = "24b35055e774"
 down_revision: Union[str, Sequence[str], None] = None
 branch_labels: Union[str, Sequence[str], None] = None
 depends_on: Union[str, Sequence[str], None] = None
@@ -131,10 +131,7 @@ def upgrade() -> None:
         sa.PrimaryKeyConstraint("id"),
     )
     op.create_index(
-        op.f("ix_workspace_members_user_id"),
-        "workspace_members",
-        ["user_id"],
-        unique=False,
+        op.f("ix_workspace_members_user_id"), "workspace_members", ["user_id"], unique=False
     )
     op.create_index(
         op.f("ix_workspace_members_workspace_id"),

api/app/app/modules/elements/service.py

@@ -17,7 +17,7 @@
 from app.modules.users.model import User
 from app.modules.workspaces.repository import is_member as workspace_is_member
 
-VALID_TYPES = {"shape", "sticky_note", "text", "arrow", "connector", "tldraw_snapshot"}
+VALID_TYPES = {"shape", "sticky_note", "text", "arrow", "connector", "excalidraw_snapshot"}
 
 
 def get_element(db: Session, element_id: UUID, user: User) -> Element | None: