fixup! Add inactivity watchdog for stalled ACP control requests

Author: schmoelder

lua/agentic/acp/acp_client.test.lua

@@ -1,3 +1,4 @@
+--- @diagnostic disable: invisible, duplicate-set-field
 local assert = require("tests.helpers.assert")
 local spy = require("tests.helpers.spy")
 

lua/agentic/acp/acp_client_types.lua

@@ -327,6 +327,7 @@
 --- @field args? string[] Arguments for agent command
 --- @field env? table<string, string|nil> Environment variables
 --- @field timeout? number Request timeout in milliseconds
+--- @field request_timeout? number Per-request silence timeout for the inactivity watchdog (ms)
 --- @field reconnect? boolean Enable auto-reconnect
 --- @field max_reconnect_attempts? number Maximum reconnection attempts
 --- @field auth_method? string Authentication method