refactor!: rename chat providers to channels

src/channels/plugins/media-limits.ts

@@ -0,0 +1,26 @@
+import type { ClawdbotConfig } from "../../config/config.js";
+import { normalizeAccountId } from "../../routing/session-key.js";
+
+const MB = 1024 * 1024;
+
+export function resolveChannelMediaMaxBytes(params: {
+  cfg: ClawdbotConfig;
+  // Channel-specific config lives under different keys; keep this helper generic
+  // so shared plugin helpers don't need channel-id branching.
+  resolveChannelLimitMb: (params: {
+    cfg: ClawdbotConfig;
+    accountId: string;
+  }) => number | undefined;
+  accountId?: string | null;
+}): number | undefined {
+  const accountId = normalizeAccountId(params.accountId);
+  const channelLimit = params.resolveChannelLimitMb({
+    cfg: params.cfg,
+    accountId,
+  });
+  if (channelLimit) return channelLimit * MB;
+  if (params.cfg.agents?.defaults?.mediaMaxMb) {
+    return params.cfg.agents.defaults.mediaMaxMb * MB;
+  }
+  return undefined;
+}