Refactor backend to SQLModel; reset schema; add Company OS endpoints

backend/app/models/projects.py

@@ -0,0 +1,20 @@
+from __future__ import annotations
+
+from sqlmodel import Field, SQLModel
+
+
+class Project(SQLModel, table=True):
+    __tablename__ = "projects"
+
+    id: int | None = Field(default=None, primary_key=True)
+    name: str = Field(index=True, unique=True)
+    status: str = Field(default="active")
+
+
+class ProjectMember(SQLModel, table=True):
+    __tablename__ = "project_members"
+
+    id: int | None = Field(default=None, primary_key=True)
+    project_id: int = Field(foreign_key="projects.id")
+    employee_id: int = Field(foreign_key="employees.id")
+    role: str | None = None