Add comprehensive SSH terminal drawer feature with embedded and popout modes, integrate playbook lint results API with local cache fallback, and enhance host management UI with terminal access buttons

app/schemas/terminal.py

@@ -0,0 +1,52 @@
+"""
+Pydantic schemas for terminal session API.
+"""
+from datetime import datetime
+from typing import Optional, Literal
+
+from pydantic import BaseModel, Field
+
+
+class TerminalSessionRequest(BaseModel):
+    """Request to create a new terminal session."""
+    mode: Literal["embedded", "popout"] = Field(
+        default="embedded",
+        description="Terminal display mode: embedded in drawer or popout window"
+    )
+
+
+class TerminalSessionHost(BaseModel):
+    """Host information included in session response."""
+    id: str
+    name: str
+    ip: str
+    status: str
+    bootstrap_ok: bool
+
+
+class TerminalSessionResponse(BaseModel):
+    """Response after creating a terminal session."""
+    session_id: str
+    url: str
+    websocket_url: str
+    expires_at: datetime
+    ttl_seconds: int
+    mode: str
+    host: TerminalSessionHost
+
+
+class TerminalSessionStatus(BaseModel):
+    """Current status of a terminal session."""
+    session_id: str
+    status: str
+    host_name: str
+    created_at: datetime
+    expires_at: datetime
+    remaining_seconds: int
+
+
+class TerminalSessionList(BaseModel):
+    """List of active terminal sessions."""
+    sessions: list[TerminalSessionStatus]
+    total: int
+    max_per_user: int