feat: self-serve signup Phase 2 (frontend cutover) (#162)

Co-authored-by: Michael Chihlas <michael@resolutionflow.com>
Co-committed-by: Michael Chihlas <michael@resolutionflow.com>

backend/app/schemas/sales_lead.py

@@ -0,0 +1,27 @@
+"""Pydantic schemas for Talk-to-Sales submissions."""
+
+from typing import Literal, Optional
+from uuid import UUID
+
+from pydantic import BaseModel, ConfigDict, EmailStr, Field
+
+SalesLeadSource = Literal["pricing_page", "register_footer", "landing_page"]
+
+
+class SalesLeadCreate(BaseModel):
+    """Public Talk-to-Sales form submission."""
+
+    model_config = ConfigDict(str_strip_whitespace=True)
+
+    email: EmailStr
+    name: str = Field(..., min_length=1, max_length=255)
+    company: str = Field(..., min_length=1, max_length=255)
+    team_size: Optional[str] = Field(default=None, max_length=20)
+    message: Optional[str] = Field(default=None, max_length=5000)
+    source: SalesLeadSource
+    posthog_distinct_id: Optional[str] = Field(default=None, max_length=255)
+
+
+class SalesLeadCreateResponse(BaseModel):
+    id: UUID
+    status: Literal["received"] = "received"