Initial commit: MCP server + web upload interface

Ezer Mishpati - AI legal decision drafting system with:
- MCP server (FastMCP) with document processing pipeline
- Web upload interface (FastAPI) for file upload and classification
- pgvector-based semantic search
- Hebrew legal document chunking and embedding

mcp-server/src/legal_mcp/models.py

@@ -0,0 +1,97 @@
+"""Pydantic models for cases, documents, and related entities."""
+
+from __future__ import annotations
+
+import enum
+from datetime import date, datetime
+from uuid import UUID
+
+from pydantic import BaseModel, Field
+
+
+class CaseStatus(str, enum.Enum):
+    NEW = "new"
+    IN_PROGRESS = "in_progress"
+    DRAFTED = "drafted"
+    REVIEWED = "reviewed"
+    FINAL = "final"
+
+
+class DocType(str, enum.Enum):
+    APPEAL = "appeal"           # כתב ערר
+    RESPONSE = "response"       # תשובה
+    DECISION = "decision"       # החלטה
+    REFERENCE = "reference"     # מסמך עזר
+    EXHIBIT = "exhibit"         # נספח
+
+
+class SectionType(str, enum.Enum):
+    INTRO = "intro"
+    FACTS = "facts"
+    APPELLANT_CLAIMS = "appellant_claims"
+    RESPONDENT_CLAIMS = "respondent_claims"
+    LEGAL_ANALYSIS = "legal_analysis"
+    CONCLUSION = "conclusion"
+    RULING = "ruling"
+    OTHER = "other"
+
+
+class ExtractionStatus(str, enum.Enum):
+    PENDING = "pending"
+    PROCESSING = "processing"
+    COMPLETED = "completed"
+    FAILED = "failed"
+
+
+class CaseCreate(BaseModel):
+    case_number: str = Field(description="מספר תיק הערר (לדוגמה: 123-24)")
+    title: str = Field(description="כותרת קצרה של הערר")
+    appellants: list[str] = Field(default_factory=list, description="שמות העוררים")
+    respondents: list[str] = Field(default_factory=list, description="שמות המשיבים")
+    subject: str = Field(default="", description="נושא הערר")
+    property_address: str = Field(default="", description="כתובת הנכס")
+    permit_number: str = Field(default="", description="מספר היתר")
+    committee_type: str = Field(default="ועדה מקומית", description="סוג הוועדה")
+    hearing_date: date | None = Field(default=None, description="תאריך דיון")
+    notes: str = Field(default="", description="הערות")
+
+
+class CaseInfo(BaseModel):
+    id: UUID
+    case_number: str
+    title: str
+    appellants: list[str]
+    respondents: list[str]
+    subject: str
+    property_address: str
+    permit_number: str
+    committee_type: str
+    status: CaseStatus
+    hearing_date: date | None
+    decision_date: date | None
+    tags: list[str]
+    notes: str
+    created_at: datetime
+    updated_at: datetime
+
+
+class DocumentInfo(BaseModel):
+    id: UUID
+    case_id: UUID
+    doc_type: DocType
+    title: str
+    file_path: str
+    extraction_status: ExtractionStatus
+    page_count: int | None
+    created_at: datetime
+
+
+class SearchResult(BaseModel):
+    chunk_content: str
+    score: float
+    case_number: str
+    document_title: str
+    section_type: str
+    page_number: int | None
+    document_id: UUID
+    case_id: UUID