Channels: add thread-aware model overrides

src/channels/model-overrides.test.ts

@@ -0,0 +1,67 @@
+import { describe, expect, it } from "vitest";
+import type { OpenClawConfig } from "../config/config.js";
+import { resolveChannelModelOverride } from "./model-overrides.js";
+
+describe("resolveChannelModelOverride", () => {
+  it("matches parent group id when topic suffix is present", () => {
+    const cfg = {
+      channels: {
+        modelByChannel: {
+          telegram: {
+            "-100123": "openai/gpt-4.1",
+          },
+        },
+      },
+    } as unknown as OpenClawConfig;
+    const resolved = resolveChannelModelOverride({
+      cfg,
+      channel: "telegram",
+      groupId: "-100123:topic:99",
+    });
+
+    expect(resolved?.model).toBe("openai/gpt-4.1");
+    expect(resolved?.matchKey).toBe("-100123");
+  });
+
+  it("prefers topic-specific match over parent group id", () => {
+    const cfg = {
+      channels: {
+        modelByChannel: {
+          telegram: {
+            "-100123": "openai/gpt-4.1",
+            "-100123:topic:99": "anthropic/claude-sonnet-4-6",
+          },
+        },
+      },
+    } as unknown as OpenClawConfig;
+    const resolved = resolveChannelModelOverride({
+      cfg,
+      channel: "telegram",
+      groupId: "-100123:topic:99",
+    });
+
+    expect(resolved?.model).toBe("anthropic/claude-sonnet-4-6");
+    expect(resolved?.matchKey).toBe("-100123:topic:99");
+  });
+
+  it("falls back to parent session key when thread id does not match", () => {
+    const cfg = {
+      channels: {
+        modelByChannel: {
+          discord: {
+            "123": "openai/gpt-4.1",
+          },
+        },
+      },
+    } as unknown as OpenClawConfig;
+    const resolved = resolveChannelModelOverride({
+      cfg,
+      channel: "discord",
+      groupId: "999",
+      parentSessionKey: "agent:main:discord:channel:123:thread:456",
+    });
+
+    expect(resolved?.model).toBe("openai/gpt-4.1");
+    expect(resolved?.matchKey).toBe("123");
+  });
+});