Agentd daemon HTTP client for web server

Create a lightweight HTTP client module for calling the Agentd daemon API from the web server.

The Omni.Web server needs to call the Agentd daemon's HTTP API (default localhost:8400) to:

• List agents: GET /agents
• Get agent: GET /agents/:id
• Spawn agent: POST /agents
• Send message: POST /agents/:id/send
• Stop agent: POST /agents/:id/stop

Module: Omni/Agents/Client.hs

-- | HTTP client for the Agentd daemon API
module Omni.Agents.Client where

-- Types matching Daemon's API types
data AgentInfo = AgentInfo { ... }
data SpawnRequest = SpawnRequest { ... }
data SpawnResponse = SpawnResponse { ... }

-- Client functions
listAgents :: Text -> IO [AgentInfo]      -- baseUrl -> agents
getAgent :: Text -> Text -> IO (Maybe AgentInfo)  -- baseUrl -> runId -> agent
spawnAgent :: Text -> SpawnRequest -> IO SpawnResponse
sendMessage :: Text -> Text -> Text -> IO Bool  -- baseUrl -> runId -> message
stopAgent :: Text -> Text -> IO Bool  -- baseUrl -> runId

Configuration

• Daemon URL configurable via env var AGENTD_URL (default: http://localhost:8400)
• Connection timeout: 5 seconds
• Read timeout: 30 seconds (spawn can take a moment)

Dependencies

• http-conduit (already used by Daemon.hs)
• aeson for JSON