fix: keep thread placement metadata cold

extensions/discord/thread-binding-api.ts

@@ -0,0 +1 @@
+export const defaultTopLevelPlacement = "child" as const;

src/channels/conversation-resolution.ts

@@ -7,7 +7,7 @@ import {
   normalizeOptionalLowercaseString,
   normalizeOptionalString,
 } from "../shared/string-coerce.js";
-import { getChannelPlugin, getLoadedChannelPlugin, normalizeChannelId } from "./plugins/index.js";
+import { getLoadedChannelPlugin, normalizeChannelId } from "./plugins/index.js";
 import { parseExplicitTargetForChannel } from "./plugins/target-parsing.js";
 import {
   resolveBundledChannelThreadBindingDefaultPlacement,
@@ -233,11 +233,7 @@ export function resolveChannelDefaultBindingPlacement(
   }
   const pluginPlacement =
     resolveRuntimeChannelPlugin(channel)?.conversationBindings?.defaultTopLevelPlacement;
-  return (
-    pluginPlacement ??
-    resolveBundledChannelThreadBindingDefaultPlacement(channel) ??
-    getChannelPlugin(channel)?.conversationBindings?.defaultTopLevelPlacement
-  );
+  return pluginPlacement ?? resolveBundledChannelThreadBindingDefaultPlacement(channel);
 }
 
 export function resolveCommandConversationResolution(
@@ -405,23 +401,6 @@ export function resolveInboundConversationResolution(
     return artifactResolution;
   }
 
-  const bundledPlugin = getChannelPlugin(channel);
-  const bundledConversation =
-    bundledPlugin !== plugin
-      ? bundledPlugin?.messaging?.resolveInboundConversation?.(resolverParams)
-      : undefined;
-  const bundledResolution = normalizeResolutionTarget({
-    channel,
-    accountId,
-    conversation: bundledConversation,
-    source: "inbound-bundled-plugin",
-    threadId,
-    plugin: bundledPlugin ?? plugin,
-  });
-  if (bundledResolution || bundledConversation === null) {
-    return bundledResolution;
-  }
-
   const parentConversationId =
     resolveChannelTargetId({
       channel,

src/channels/thread-bindings-policy.ts

@@ -5,7 +5,8 @@ import {
   resolveThreadBindingLifecycle as resolveSharedThreadBindingLifecycle,
   type ThreadBindingLifecycleRecord,
 } from "../shared/thread-binding-lifecycle.js";
-import { getChannelPlugin } from "./plugins/index.js";
+import { getLoadedChannelPlugin } from "./plugins/index.js";
+import { resolveBundledChannelThreadBindingDefaultPlacement } from "./plugins/thread-binding-api.js";
 
 export {
   resolveThreadBindingLifecycle,
@@ -64,7 +65,11 @@ function resolveDefaultTopLevelPlacement(channel: string): "current" | "child" {
   if (!normalized) {
     return "current";
   }
-  return getChannelPlugin(normalized)?.conversationBindings?.defaultTopLevelPlacement ?? "current";
+  return (
+    getLoadedChannelPlugin(normalized)?.conversationBindings?.defaultTopLevelPlacement ??
+    resolveBundledChannelThreadBindingDefaultPlacement(normalized) ??
+    "current"
+  );
 }
 
 function normalizeBoolean(value: unknown): boolean | undefined {