feat(config): add default model shorthands

src/commands/setup.ts

@@ -8,6 +8,7 @@ import {
   ensureAgentWorkspace,
 } from "../agents/workspace.js";
 import { type ClawdbotConfig, CONFIG_PATH_CLAWDBOT } from "../config/config.js";
+import { applyModelAliasDefaults } from "../config/defaults.js";
 import { resolveSessionTranscriptsDir } from "../config/sessions.js";
 import type { RuntimeEnv } from "../runtime.js";
 import { defaultRuntime } from "../runtime.js";
@@ -30,7 +31,9 @@ async function readConfigFileRaw(): Promise<{
 
 async function writeConfigFile(cfg: ClawdbotConfig) {
   await fs.mkdir(path.dirname(CONFIG_PATH_CLAWDBOT), { recursive: true });
-  const json = JSON.stringify(cfg, null, 2).trimEnd().concat("\n");
+  const json = JSON.stringify(applyModelAliasDefaults(cfg), null, 2)
+    .trimEnd()
+    .concat("\n");
   await fs.writeFile(CONFIG_PATH_CLAWDBOT, json, "utf-8");
 }
 

src/config/defaults.ts

@@ -5,6 +5,20 @@ type WarnState = { warned: boolean };
 
 let defaultWarnState: WarnState = { warned: false };
 
+const DEFAULT_MODEL_ALIASES: Readonly<Record<string, string>> = {
+  // Anthropic (pi-ai catalog uses "latest" ids without date suffix)
+  opus: "anthropic/claude-opus-4-5",
+  sonnet: "anthropic/claude-sonnet-4-5",
+
+  // OpenAI
+  gpt: "openai/gpt-5.2",
+  "gpt-mini": "openai/gpt-5-mini",
+
+  // Google Gemini (3.x are preview ids in the catalog)
+  gemini: "google/gemini-3-pro-preview",
+  "gemini-flash": "google/gemini-3-flash-preview",
+};
+
 export type SessionDefaultsOptions = {
   warn?: (message: string) => void;
   warnState?: WarnState;
@@ -78,6 +92,56 @@ export function applyTalkApiKey(config: ClawdbotConfig): ClawdbotConfig {
   };
 }
 
+function normalizeAliasKey(value: string): string {
+  return value.trim().toLowerCase();
+}
+
+export function applyModelAliasDefaults(cfg: ClawdbotConfig): ClawdbotConfig {
+  const existingAgent = cfg.agent;
+  if (!existingAgent) return cfg;
+  const existingAliases = existingAgent?.modelAliases ?? {};
+
+  const byNormalized = new Map<string, string>();
+  for (const key of Object.keys(existingAliases)) {
+    const norm = normalizeAliasKey(key);
+    if (!norm) continue;
+    if (!byNormalized.has(norm)) byNormalized.set(norm, key);
+  }
+
+  let mutated = false;
+  const nextAliases: Record<string, string> = { ...existingAliases };
+
+  for (const [canonicalKey, target] of Object.entries(DEFAULT_MODEL_ALIASES)) {
+    const norm = normalizeAliasKey(canonicalKey);
+    const existingKey = byNormalized.get(norm);
+
+    if (!existingKey) {
+      nextAliases[canonicalKey] = target;
+      byNormalized.set(norm, canonicalKey);
+      mutated = true;
+      continue;
+    }
+
+    const existingValue = String(existingAliases[existingKey] ?? "");
+    if (existingKey !== canonicalKey && existingValue === target) {
+      delete nextAliases[existingKey];
+      nextAliases[canonicalKey] = target;
+      byNormalized.set(norm, canonicalKey);
+      mutated = true;
+    }
+  }
+
+  if (!mutated) return cfg;
+
+  return {
+    ...cfg,
+    agent: {
+      ...existingAgent,
+      modelAliases: nextAliases,
+    },
+  };
+}
+
 export function resetSessionDefaultsWarningForTests() {
   defaultWarnState = { warned: false };
 }

src/config/model-alias-defaults.test.ts

@@ -0,0 +1,76 @@
+import { describe, expect, it } from "vitest";
+import { applyModelAliasDefaults } from "./defaults.js";
+import type { ClawdbotConfig } from "./types.js";
+
+describe("applyModelAliasDefaults", () => {
+  it("adds default shorthands", () => {
+    const cfg = { agent: {} } satisfies ClawdbotConfig;
+    const next = applyModelAliasDefaults(cfg);
+
+    expect(next.agent?.modelAliases).toEqual({
+      opus: "anthropic/claude-opus-4-5",
+      sonnet: "anthropic/claude-sonnet-4-5",
+      gpt: "openai/gpt-5.2",
+      "gpt-mini": "openai/gpt-5-mini",
+      gemini: "google/gemini-3-pro-preview",
+      "gemini-flash": "google/gemini-3-flash-preview",
+    });
+  });
+
+  it("normalizes casing when alias matches the default target", () => {
+    const cfg = {
+      agent: { modelAliases: { Opus: "anthropic/claude-opus-4-5" } },
+    } satisfies ClawdbotConfig;
+
+    const next = applyModelAliasDefaults(cfg);
+
+    expect(next.agent?.modelAliases).toMatchObject({
+      opus: "anthropic/claude-opus-4-5",
+    });
+    expect(next.agent?.modelAliases).not.toHaveProperty("Opus");
+  });
+
+  it("does not override existing alias values", () => {
+    const cfg = {
+      agent: { modelAliases: { gpt: "openai/gpt-4.1" } },
+    } satisfies ClawdbotConfig;
+
+    const next = applyModelAliasDefaults(cfg);
+
+    expect(next.agent?.modelAliases?.gpt).toBe("openai/gpt-4.1");
+    expect(next.agent?.modelAliases).toMatchObject({
+      "gpt-mini": "openai/gpt-5-mini",
+      opus: "anthropic/claude-opus-4-5",
+      sonnet: "anthropic/claude-sonnet-4-5",
+      gemini: "google/gemini-3-pro-preview",
+      "gemini-flash": "google/gemini-3-flash-preview",
+    });
+  });
+
+  it("does not rename when casing differs and value differs", () => {
+    const cfg = {
+      agent: { modelAliases: { GPT: "openai/gpt-4.1-mini" } },
+    } satisfies ClawdbotConfig;
+
+    const next = applyModelAliasDefaults(cfg);
+
+    expect(next.agent?.modelAliases).toMatchObject({
+      GPT: "openai/gpt-4.1-mini",
+    });
+    expect(next.agent?.modelAliases).not.toHaveProperty("gpt");
+  });
+
+  it("respects explicit empty-string disables", () => {
+    const cfg = {
+      agent: { modelAliases: { gemini: "" } },
+    } satisfies ClawdbotConfig;
+
+    const next = applyModelAliasDefaults(cfg);
+
+    expect(next.agent?.modelAliases?.gemini).toBe("");
+    expect(next.agent?.modelAliases).toHaveProperty(
+      "gemini-flash",
+      "google/gemini-3-flash-preview",
+    );
+  });
+});

src/config/validation.ts

@@ -1,4 +1,8 @@
-import { applyIdentityDefaults, applySessionDefaults } from "./defaults.js";
+import {
+  applyIdentityDefaults,
+  applyModelAliasDefaults,
+  applySessionDefaults,
+} from "./defaults.js";
 import { findLegacyConfigIssues } from "./legacy.js";
 import type { ClawdbotConfig, ConfigValidationIssue } from "./types.js";
 import { ClawdbotSchema } from "./zod-schema.js";
@@ -30,8 +34,10 @@ export function validateConfigObject(
   }
   return {
     ok: true,
-    config: applySessionDefaults(
-      applyIdentityDefaults(validated.data as ClawdbotConfig),
+    config: applyModelAliasDefaults(
+      applySessionDefaults(
+        applyIdentityDefaults(validated.data as ClawdbotConfig),
+      ),
     ),
   };
 }