feat: enhance message context with full ID support for replies and caching

- Updated message processing to include full message IDs alongside short IDs for better context resolution.
- Improved reply handling by caching inbound messages, allowing for accurate sender and body resolution without exposing dropped content.
- Adjusted tests to validate the new full ID properties and their integration into the message handling workflow.

src/auto-reply/reply/agent-runner-execution.ts

@@ -299,6 +299,8 @@ export async function runAgentTurnWithFallback(params: {
                   const { text, skip } = normalizeStreamingText(payload);
                   const hasPayloadMedia = (payload.mediaUrls?.length ?? 0) > 0;
                   if (skip && !hasPayloadMedia) return;
+                  const currentMessageId =
+                    params.sessionCtx.MessageSidFull ?? params.sessionCtx.MessageSid;
                   const taggedPayload = applyReplyTagsToPayload(
                     {
                       text,
@@ -308,12 +310,12 @@ export async function runAgentTurnWithFallback(params: {
                       replyToTag: payload.replyToTag,
                       replyToCurrent: payload.replyToCurrent,
                     },
-                    params.sessionCtx.MessageSid,
+                    currentMessageId,
                   );
                   // Let through payloads with audioAsVoice flag even if empty (need to track it)
                   if (!isRenderablePayload(taggedPayload) && !payload.audioAsVoice) return;
                   const parsed = parseReplyDirectives(taggedPayload.text ?? "", {
-                    currentMessageId: params.sessionCtx.MessageSid,
+                    currentMessageId,
                     silentToken: SILENT_REPLY_TOKEN,
                   });
                   const cleaned = parsed.text || undefined;

src/auto-reply/reply/agent-runner.ts

@@ -377,7 +377,7 @@ export async function runReplyAgent(params: {
       directlySentBlockKeys,
       replyToMode,
       replyToChannel,
-      currentMessageId: sessionCtx.MessageSid,
+      currentMessageId: sessionCtx.MessageSidFull ?? sessionCtx.MessageSid,
       messageProvider: followupRun.run.messageProvider,
       messagingToolSentTexts: runResult.messagingToolSentTexts,
       messagingToolSentTargets: runResult.messagingToolSentTargets,

src/auto-reply/reply/get-reply-run.ts

@@ -350,7 +350,7 @@ export async function runPreparedReply(
   const authProfileIdSource = sessionEntry?.authProfileOverrideSource;
   const followupRun = {
     prompt: queuedBody,
-    messageId: sessionCtx.MessageSid,
+    messageId: sessionCtx.MessageSidFull ?? sessionCtx.MessageSid,
     summaryLine: baseBodyTrimmedRaw,
     enqueuedAt: Date.now(),
     // Originating channel for reply routing.

src/auto-reply/templating.ts

@@ -38,10 +38,14 @@ export type MsgContext = {
   AccountId?: string;
   ParentSessionKey?: string;
   MessageSid?: string;
+  /** Provider-specific full message id when MessageSid is a shortened alias. */
+  MessageSidFull?: string;
   MessageSids?: string[];
   MessageSidFirst?: string;
   MessageSidLast?: string;
   ReplyToId?: string;
+  /** Provider-specific full reply-to id when ReplyToId is a shortened alias. */
+  ReplyToIdFull?: string;
   ReplyToBody?: string;
   ReplyToSender?: string;
   ForwardedFrom?: string;