fix(commands): load opencode command dirs from aliases

Ultraworked with [Sisyphus](https://github.com/code-yeongyu/oh-my-openagent)

Co-authored-by: Sisyphus <clio-agent@sisyphuslabs.ai>

src/features/claude-code-command-loader/loader.test.ts

@@ -0,0 +1,70 @@
+import { afterEach, beforeEach, describe, expect, it } from "bun:test"
+import { mkdirSync, rmSync, writeFileSync } from "node:fs"
+import { tmpdir } from "node:os"
+import { join } from "node:path"
+import { loadOpencodeGlobalCommands, loadOpencodeProjectCommands } from "./loader"
+
+const TEST_DIR = join(tmpdir(), `claude-code-command-loader-${Date.now()}`)
+
+function writeCommand(directory: string, name: string, description: string): void {
+  mkdirSync(directory, { recursive: true })
+  writeFileSync(
+    join(directory, `${name}.md`),
+    `---\ndescription: ${description}\n---\nRun ${name}.\n`,
+  )
+}
+
+describe("claude-code command loader", () => {
+  let originalOpencodeConfigDir: string | undefined
+
+  beforeEach(() => {
+    mkdirSync(TEST_DIR, { recursive: true })
+    originalOpencodeConfigDir = process.env.OPENCODE_CONFIG_DIR
+  })
+
+  afterEach(() => {
+    if (originalOpencodeConfigDir === undefined) {
+      delete process.env.OPENCODE_CONFIG_DIR
+    } else {
+      process.env.OPENCODE_CONFIG_DIR = originalOpencodeConfigDir
+    }
+    rmSync(TEST_DIR, { recursive: true, force: true })
+  })
+
+  it("#given a parent .opencode/commands directory #when loadOpencodeProjectCommands is called from child directory #then it loads the ancestor command", async () => {
+    // given
+    const projectDir = join(TEST_DIR, "project")
+    const childDir = join(projectDir, "apps", "desktop")
+    writeCommand(join(projectDir, ".opencode", "commands"), "ancestor", "Ancestor command")
+
+    // when
+    const commands = await loadOpencodeProjectCommands(childDir)
+
+    // then
+    expect(commands.ancestor?.description).toBe("(opencode-project) Ancestor command")
+  })
+
+  it("#given a .opencode/command directory #when loadOpencodeProjectCommands is called #then it loads the singular alias directory", async () => {
+    // given
+    writeCommand(join(TEST_DIR, ".opencode", "command"), "singular", "Singular command")
+
+    // when
+    const commands = await loadOpencodeProjectCommands(TEST_DIR)
+
+    // then
+    expect(commands.singular?.description).toBe("(opencode-project) Singular command")
+  })
+
+  it("#given a global .opencode/commands directory #when loadOpencodeGlobalCommands is called #then it loads the plural alias directory", async () => {
+    // given
+    const opencodeConfigDir = join(TEST_DIR, "opencode-config")
+    process.env.OPENCODE_CONFIG_DIR = opencodeConfigDir
+    writeCommand(join(opencodeConfigDir, "commands"), "global-plural", "Global plural command")
+
+    // when
+    const commands = await loadOpencodeGlobalCommands()
+
+    // then
+    expect(commands["global-plural"]?.description).toBe("(opencode) Global plural command")
+  })
+})