diff --git a/src/reinject.ts b/src/reinject.ts
index 67761eb..fdec78a 100644
--- a/src/reinject.ts
+++ b/src/reinject.ts
@@ -1,5 +1,6 @@
 import type {
 	BeforeAgentStartEventResult,
+	ExtensionAPI,
 	ExtensionContext,
 	SessionCompactEvent,
 	Skill,
@@ -59,16 +60,16 @@ export function enqueueDeferredReinjectFromCompact(
 	);
 }
 
-/** Combined skill-block user text for pending names in queue order (SPEC §5.3). */
-export function buildDeferredReinjectContent(
-	pendingNames: readonly string[],
+/** Expanded skill-block messages in queue order (SPEC §5.3). */
+export function buildReinjectBlocks(
+	skillNames: readonly string[],
 	state: ExtensionState,
 	settings: SkillReinjectSettings,
 	registeredSkills: readonly Pick<Skill, "name" | "filePath" | "baseDir">[],
-): string {
+): string[] {
 	const registeredByName = new Map(registeredSkills.map((skill) => [skill.name, skill]));
 	const blocks: string[] = [];
-	for (const name of pendingNames) {
+	for (const name of skillNames) {
 		const tracked = state.skills.find((skill) => skill.name === name);
 		const registered = registeredByName.get(name);
 		if (!tracked || !registered) {
@@ -85,7 +86,31 @@ export function buildDeferredReinjectContent(
 			),
 		);
 	}
-	return blocks.join("\n\n");
+	return blocks;
+}
+
+/** Combined skill-block user text for pending names in queue order (SPEC §5.3). */
+export function buildDeferredReinjectContent(
+	pendingNames: readonly string[],
+	state: ExtensionState,
+	settings: SkillReinjectSettings,
+	registeredSkills: readonly Pick<Skill, "name" | "filePath" | "baseDir">[],
+): string {
+	return buildReinjectBlocks(pendingNames, state, settings, registeredSkills).join("\n\n");
+}
+
+/** Immediate path when agent is idle: first block triggers turn, rest queue as followUp (SPEC §6.5.2). */
+export function sendImmediateReinjectIdle(
+	pi: ExtensionAPI,
+	skillNames: readonly string[],
+	state: ExtensionState,
+	settings: SkillReinjectSettings,
+	registeredSkills: readonly Pick<Skill, "name" | "filePath" | "baseDir">[],
+): void {
+	const blocks = buildReinjectBlocks(skillNames, state, settings, registeredSkills);
+	blocks.forEach((block, index) => {
+		pi.sendUserMessage(block, index === 0 ? undefined : { deliverAs: "followUp" });
+	});
 }
 
 /**