Fix: install by name always fetches from GitHub (#180)

* feat(cursor): add Cursor CLI as target provider

Add converter, writer, types, and tests for converting Claude Code
plugins to Cursor-compatible format (.mdc rules, commands, skills,
mcp.json). Agents become Agent Requested rules (alwaysApply: false),
commands are plain markdown, skills copy directly, MCP is 1:1 JSON.

* docs: add Cursor spec and update README with cursor target

* chore: bump CLI version to 0.5.0 for cursor target

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

* docs: note Cursor IDE + CLI compatibility in README

* fix: install by name always fetches from GitHub

Previously, `install compound-engineering` would resolve to any local
directory named `compound-engineering` in the current working directory
before trying GitHub. This broke installs when users had a same-named
directory that wasn't a valid plugin.

Now bare names always go to GitHub. Only explicit paths (starting with
./ or / or ~) are treated as local paths.

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

---------

Co-authored-by: Claude Opus 4.6 <noreply@anthropic.com>

tests/cli.test.ts

@@ -180,6 +180,68 @@ describe("CLI", () => {
     expect(await exists(path.join(tempRoot, ".config", "opencode", "agents", "repo-research-analyst.md"))).toBe(true)
   })
 
+  test("install by name ignores same-named local directory", async () => {
+    const tempRoot = await fs.mkdtemp(path.join(os.tmpdir(), "cli-shadow-"))
+    const workspaceRoot = await fs.mkdtemp(path.join(os.tmpdir(), "cli-shadow-workspace-"))
+    const repoRoot = await fs.mkdtemp(path.join(os.tmpdir(), "cli-shadow-repo-"))
+
+    // Create a directory with the plugin name that is NOT a valid plugin
+    const shadowDir = path.join(workspaceRoot, "compound-engineering")
+    await fs.mkdir(shadowDir, { recursive: true })
+    await fs.writeFile(path.join(shadowDir, "README.md"), "Not a plugin")
+
+    // Set up a fake GitHub source with a valid plugin
+    const fixtureRoot = path.join(import.meta.dir, "fixtures", "sample-plugin")
+    const pluginRoot = path.join(repoRoot, "plugins", "compound-engineering")
+    await fs.mkdir(path.dirname(pluginRoot), { recursive: true })
+    await fs.cp(fixtureRoot, pluginRoot, { recursive: true })
+
+    const gitEnv = {
+      ...process.env,
+      GIT_AUTHOR_NAME: "Test",
+      GIT_AUTHOR_EMAIL: "test@example.com",
+      GIT_COMMITTER_NAME: "Test",
+      GIT_COMMITTER_EMAIL: "test@example.com",
+    }
+    await runGit(["init"], repoRoot, gitEnv)
+    await runGit(["add", "."], repoRoot, gitEnv)
+    await runGit(["commit", "-m", "fixture"], repoRoot, gitEnv)
+
+    const projectRoot = path.join(import.meta.dir, "..")
+    const proc = Bun.spawn([
+      "bun",
+      "run",
+      path.join(projectRoot, "src", "index.ts"),
+      "install",
+      "compound-engineering",
+      "--to",
+      "opencode",
+      "--output",
+      tempRoot,
+    ], {
+      cwd: workspaceRoot,
+      stdout: "pipe",
+      stderr: "pipe",
+      env: {
+        ...process.env,
+        HOME: tempRoot,
+        COMPOUND_PLUGIN_GITHUB_SOURCE: repoRoot,
+      },
+    })
+
+    const exitCode = await proc.exited
+    const stdout = await new Response(proc.stdout).text()
+    const stderr = await new Response(proc.stderr).text()
+
+    if (exitCode !== 0) {
+      throw new Error(`CLI failed (exit ${exitCode}).\nstdout: ${stdout}\nstderr: ${stderr}`)
+    }
+
+    // Should succeed by fetching from GitHub, NOT failing on the local shadow directory
+    expect(stdout).toContain("Installed compound-engineering")
+    expect(await exists(path.join(tempRoot, "opencode.json"))).toBe(true)
+  })
+
   test("convert writes OpenCode output", async () => {
     const tempRoot = await fs.mkdtemp(path.join(os.tmpdir(), "cli-convert-"))
     const fixtureRoot = path.join(import.meta.dir, "fixtures", "sample-plugin")