fix(prompt-gate): pin duplicate prompt dispatches

Keep prompt reservations briefly after successful dispatch so rapid idle/message/error transitions cannot inject the same follow-up twice.

Route all production session prompt calls through the shared gate, restore skipped background resume state, release holds after abort/recovery paths, and preserve Ralph/ULW loop state when a dispatch is deferred.

Add regression coverage for session routing, static prompt route auditing, team-mode live messaging, model suggestion retries, call-omo-agent reuse, background parent wakes, runtime fallback, compaction recovery, Atlas, and Ralph/ULW loops.

src/hooks/ralph-loop/ralph-loop-hook.ts

@@ -1,6 +1,7 @@
 import type { PluginInput } from "@opencode-ai/plugin"
 import type { RalphLoopOptions, RalphLoopState } from "./types"
 import { getTranscriptPath as getDefaultTranscriptPath } from "../claude-code-hooks/transcript"
+import { releasePromptAsyncReservation } from "../shared/prompt-async-gate"
 import { createLoopStateController } from "./loop-state-controller"
 import { createRalphLoopEventHandler } from "./ralph-loop-event-handler"
 
@@ -69,6 +70,9 @@ export function createRalphLoopHook(
 		event,
 		startLoop: (sessionID, prompt, loopOptions): boolean => {
 			const startSuccess = loopState.startLoop(sessionID, prompt, loopOptions)
+			if (startSuccess) {
+				releasePromptAsyncReservation(sessionID, "ralph-loop:start-loop")
+			}
 			if (!startSuccess || typeof loopOptions?.messageCountAtStart === "number") {
 				return startSuccess
 			}