Config-manager: migrate legacy OMO config path

src/cli/config-manager/write-omo-config.test.ts

@@ -1,5 +1,5 @@
 import { afterEach, beforeEach, describe, expect, it } from "bun:test"
-import { mkdirSync, readFileSync, rmSync, writeFileSync } from "node:fs"
+import { existsSync, mkdirSync, readFileSync, rmSync, writeFileSync } from "node:fs"
 import { tmpdir } from "node:os"
 import { join } from "node:path"
 
@@ -34,7 +34,7 @@ describe("writeOmoConfig", () => {
 
   beforeEach(() => {
     testConfigDir = join(tmpdir(), `omo-write-config-${Date.now()}-${Math.random().toString(36).slice(2)}`)
-    testConfigPath = join(testConfigDir, "oh-my-opencode.json")
+    testConfigPath = join(testConfigDir, "oh-my-openagent.json")
 
     mkdirSync(testConfigDir, { recursive: true })
     process.env.OPENCODE_CONFIG_DIR = testConfigDir
@@ -77,4 +77,41 @@ describe("writeOmoConfig", () => {
       expect(savedConfig).toHaveProperty(defaultKey)
     }
   })
+
+  it("migrates legacy oh-my-opencode.json to canonical oh-my-openagent.json before merging", () => {
+    // given
+    const legacyConfigPath = join(testConfigDir, "oh-my-opencode.json")
+    const canonicalConfigPath = join(testConfigDir, "oh-my-openagent.json")
+    const legacyBackupPath = `${legacyConfigPath}.bak`
+    writeFileSync(
+      legacyConfigPath,
+      JSON.stringify(
+        {
+          agents: {
+            sisyphus: {
+              model: "custom/provider-model",
+            },
+          },
+        },
+        null,
+        2,
+      ) + "\n",
+      "utf-8",
+    )
+
+    // when
+    const result = writeOmoConfig(installConfig)
+
+    // then
+    expect(result.success).toBe(true)
+    expect(result.configPath).toEndWith("oh-my-openagent.json")
+    expect(existsSync(legacyConfigPath)).toBe(false)
+    expect(existsSync(legacyBackupPath)).toBe(true)
+    expect(existsSync(canonicalConfigPath)).toBe(true)
+
+    const savedConfig = parseJsonc<Record<string, unknown>>(readFileSync(canonicalConfigPath, "utf-8"))
+    const savedAgents = getRecord(savedConfig.agents)
+    const savedSisyphus = getRecord(savedAgents.sisyphus)
+    expect(savedSisyphus.model).toBe("custom/provider-model")
+  })
 })