Add Factory Droid as a converter target (#174)

Adds a new 'droid' target to the converter that outputs Claude Code plugins
in Factory Droid's format:

- Commands flattened to ~/.factory/commands/ (strips namespace prefixes)
- Agents converted to droids in ~/.factory/droids/ with proper frontmatter
- Skills copied to ~/.factory/skills/
- Content transforms: Task calls, slash commands, and @agent references
  adapted to Droid conventions

This resolves the manual workaround described in issue #31 by automating
the conversion from Claude Code plugin format to Factory Droid's expected
directory structure.

Includes 13 tests covering converter logic and file writer behavior.

Co-authored-by: adamprime <adamprime@hey.com>
Co-authored-by: factory-droid[bot] <138933559+factory-droid[bot]@users.noreply.github.com>

src/commands/convert.ts

@@ -22,7 +22,7 @@ export default defineCommand({
     to: {
       type: "string",
       default: "opencode",
-      description: "Target format (opencode | codex)",
+      description: "Target format (opencode | codex | droid)",
     },
     output: {
       type: "string",
@@ -80,7 +80,7 @@ export default defineCommand({
       permissions: permissions as PermissionMode,
     }
 
-    const primaryOutputRoot = targetName === "codex" && codexHome ? codexHome : outputRoot
+    const primaryOutputRoot = resolveTargetOutputRoot(targetName, outputRoot, codexHome)
     const bundle = target.convert(plugin, options)
     if (!bundle) {
       throw new Error(`Target ${targetName} did not return a bundle.`)
@@ -106,9 +106,7 @@ export default defineCommand({
         console.warn(`Skipping ${extra}: no output returned.`)
         continue
       }
-      const extraRoot = extra === "codex" && codexHome
-        ? codexHome
-        : path.join(outputRoot, extra)
+      const extraRoot = resolveTargetOutputRoot(extra, path.join(outputRoot, extra), codexHome)
       await handler.write(extraRoot, extraBundle)
       console.log(`Converted ${plugin.manifest.name} to ${extra} at ${extraRoot}`)
     }
@@ -154,3 +152,9 @@ function resolveOutputRoot(value: unknown): string {
   }
   return process.cwd()
 }
+
+function resolveTargetOutputRoot(targetName: string, outputRoot: string, codexHome: string): string {
+  if (targetName === "codex") return codexHome
+  if (targetName === "droid") return path.join(os.homedir(), ".factory")
+  return outputRoot
+}

src/commands/install.ts

@@ -24,7 +24,7 @@ export default defineCommand({
     to: {
       type: "string",
       default: "opencode",
-      description: "Target format (opencode | codex)",
+      description: "Target format (opencode | codex | droid)",
     },
     output: {
       type: "string",
@@ -88,7 +88,7 @@ export default defineCommand({
       if (!bundle) {
         throw new Error(`Target ${targetName} did not return a bundle.`)
       }
-      const primaryOutputRoot = targetName === "codex" && codexHome ? codexHome : outputRoot
+      const primaryOutputRoot = resolveTargetOutputRoot(targetName, outputRoot, codexHome)
       await target.write(primaryOutputRoot, bundle)
       console.log(`Installed ${plugin.manifest.name} to ${primaryOutputRoot}`)
 
@@ -109,9 +109,7 @@ export default defineCommand({
           console.warn(`Skipping ${extra}: no output returned.`)
           continue
         }
-        const extraRoot = extra === "codex" && codexHome
-          ? codexHome
-          : path.join(outputRoot, extra)
+        const extraRoot = resolveTargetOutputRoot(extra, path.join(outputRoot, extra), codexHome)
         await handler.write(extraRoot, extraBundle)
         console.log(`Installed ${plugin.manifest.name} to ${extraRoot}`)
       }
@@ -180,6 +178,12 @@ function resolveOutputRoot(value: unknown): string {
   return path.join(os.homedir(), ".config", "opencode")
 }
 
+function resolveTargetOutputRoot(targetName: string, outputRoot: string, codexHome: string): string {
+  if (targetName === "codex") return codexHome
+  if (targetName === "droid") return path.join(os.homedir(), ".factory")
+  return outputRoot
+}
+
 async function resolveGitHubPluginPath(pluginName: string): Promise<ResolvedPluginPath> {
   const tempRoot = await fs.mkdtemp(path.join(os.tmpdir(), "compound-plugin-"))
   const source = resolveGitHubSource()