refactor: normalize inbound context

src/config/sessions/group.ts

@@ -136,6 +136,6 @@ export function resolveGroupSessionKey(ctx: MsgContext): GroupKeyResolution | nu
     legacyKey,
     channel: resolvedProvider,
     id: id || raw || from,
-    chatType: resolvedKind === "channel" ? "room" : "group",
+    chatType: resolvedKind === "channel" ? "channel" : "group",
   };
 }

src/config/sessions/types.ts

@@ -7,7 +7,12 @@ export type SessionScope = "per-sender" | "global";
 
 export type SessionChannelId = ChannelId | "webchat";
 
-export type SessionChatType = "direct" | "group" | "room";
+export type SessionChatType =
+  | "direct"
+  | "group"
+  | "channel"
+  // Legacy alias for "channel".
+  | "room";
 
 export type SessionEntry = {
   /**

src/config/zod-schema.session.ts

@@ -39,7 +39,13 @@ export const SessionSchema = z
                 .object({
                   channel: z.string().optional(),
                   chatType: z
-                    .union([z.literal("direct"), z.literal("group"), z.literal("room")])
+                    .union([
+                      z.literal("direct"),
+                      z.literal("group"),
+                      z.literal("channel"),
+                      // Legacy alias for "channel".
+                      z.literal("room"),
+                    ])
                     .optional(),
                   keyPrefix: z.string().optional(),
                 })