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()

src/converters/claude-to-droid.ts

@@ -0,0 +1,174 @@
+import { formatFrontmatter } from "../utils/frontmatter"
+import type { ClaudeAgent, ClaudeCommand, ClaudePlugin } from "../types/claude"
+import type { DroidBundle, DroidCommandFile, DroidAgentFile } from "../types/droid"
+import type { ClaudeToOpenCodeOptions } from "./claude-to-opencode"
+
+export type ClaudeToDroidOptions = ClaudeToOpenCodeOptions
+
+const CLAUDE_TO_DROID_TOOLS: Record<string, string> = {
+  read: "Read",
+  write: "Create",
+  edit: "Edit",
+  multiedit: "Edit",
+  bash: "Execute",
+  grep: "Grep",
+  glob: "Glob",
+  list: "LS",
+  ls: "LS",
+  webfetch: "FetchUrl",
+  websearch: "WebSearch",
+  task: "Task",
+  todowrite: "TodoWrite",
+  todoread: "TodoWrite",
+  question: "AskUser",
+}
+
+const VALID_DROID_TOOLS = new Set([
+  "Read",
+  "LS",
+  "Grep",
+  "Glob",
+  "Create",
+  "Edit",
+  "ApplyPatch",
+  "Execute",
+  "WebSearch",
+  "FetchUrl",
+  "TodoWrite",
+  "Task",
+  "AskUser",
+])
+
+export function convertClaudeToDroid(
+  plugin: ClaudePlugin,
+  _options: ClaudeToDroidOptions,
+): DroidBundle {
+  const commands = plugin.commands.map((command) => convertCommand(command))
+  const droids = plugin.agents.map((agent) => convertAgent(agent))
+  const skillDirs = plugin.skills.map((skill) => ({
+    name: skill.name,
+    sourceDir: skill.sourceDir,
+  }))
+
+  return { commands, droids, skillDirs }
+}
+
+function convertCommand(command: ClaudeCommand): DroidCommandFile {
+  const name = flattenCommandName(command.name)
+  const frontmatter: Record<string, unknown> = {
+    description: command.description,
+  }
+  if (command.argumentHint) {
+    frontmatter["argument-hint"] = command.argumentHint
+  }
+  if (command.disableModelInvocation) {
+    frontmatter["disable-model-invocation"] = true
+  }
+
+  const body = transformContentForDroid(command.body.trim())
+  const content = formatFrontmatter(frontmatter, body)
+  return { name, content }
+}
+
+function convertAgent(agent: ClaudeAgent): DroidAgentFile {
+  const name = normalizeName(agent.name)
+  const frontmatter: Record<string, unknown> = {
+    name,
+    description: agent.description,
+    model: agent.model && agent.model !== "inherit" ? agent.model : "inherit",
+  }
+
+  const tools = mapAgentTools(agent)
+  if (tools) {
+    frontmatter.tools = tools
+  }
+
+  let body = agent.body.trim()
+  if (agent.capabilities && agent.capabilities.length > 0) {
+    const capabilities = agent.capabilities.map((c) => `- ${c}`).join("\n")
+    body = `## Capabilities\n${capabilities}\n\n${body}`.trim()
+  }
+  if (body.length === 0) {
+    body = `Instructions converted from the ${agent.name} agent.`
+  }
+
+  body = transformContentForDroid(body)
+
+  const content = formatFrontmatter(frontmatter, body)
+  return { name, content }
+}
+
+function mapAgentTools(agent: ClaudeAgent): string[] | undefined {
+  const bodyLower = `${agent.name} ${agent.description ?? ""} ${agent.body}`.toLowerCase()
+
+  const mentionedTools = new Set<string>()
+  for (const [claudeTool, droidTool] of Object.entries(CLAUDE_TO_DROID_TOOLS)) {
+    if (bodyLower.includes(claudeTool)) {
+      mentionedTools.add(droidTool)
+    }
+  }
+
+  if (mentionedTools.size === 0) return undefined
+  return [...mentionedTools].filter((t) => VALID_DROID_TOOLS.has(t)).sort()
+}
+
+/**
+ * Transform Claude Code content to Factory Droid-compatible content.
+ *
+ * 1. Slash commands: /workflows:plan → /plan, /command-name stays as-is
+ * 2. Task agent calls: Task agent-name(args) → Task agent-name: args
+ * 3. Agent references: @agent-name → the agent-name droid
+ */
+function transformContentForDroid(body: string): string {
+  let result = body
+
+  // 1. Transform Task agent calls
+  // Match: Task repo-research-analyst(feature_description)
+  const taskPattern = /^(\s*-?\s*)Task\s+([a-z][a-z0-9-]*)\(([^)]+)\)/gm
+  result = result.replace(taskPattern, (_match, prefix: string, agentName: string, args: string) => {
+    const name = normalizeName(agentName)
+    return `${prefix}Task ${name}: ${args.trim()}`
+  })
+
+  // 2. Transform slash command references
+  // /workflows:plan → /plan, /command-name stays as-is
+  const slashCommandPattern = /(?<![:\w])\/([a-z][a-z0-9_:-]*?)(?=[\s,."')\]}`]|$)/gi
+  result = result.replace(slashCommandPattern, (match, commandName: string) => {
+    if (commandName.includes('/')) return match
+    if (['dev', 'tmp', 'etc', 'usr', 'var', 'bin', 'home'].includes(commandName)) return match
+    const flattened = flattenCommandName(commandName)
+    return `/${flattened}`
+  })
+
+  // 3. Transform @agent-name references to droid references
+  const agentRefPattern = /@agent-([a-z][a-z0-9-]*)/gi
+  result = result.replace(agentRefPattern, (_match, agentName: string) => {
+    return `the ${normalizeName(agentName)} droid`
+  })
+
+  return result
+}
+
+/**
+ * Flatten a command name by stripping the namespace prefix.
+ * "workflows:plan" → "plan"
+ * "plan_review" → "plan_review"
+ */
+function flattenCommandName(name: string): string {
+  const colonIndex = name.lastIndexOf(":")
+  const base = colonIndex >= 0 ? name.slice(colonIndex + 1) : name
+  return normalizeName(base)
+}
+
+function normalizeName(value: string): string {
+  const trimmed = value.trim()
+  if (!trimmed) return "item"
+  const normalized = trimmed
+    .toLowerCase()
+    .replace(/[\\/]+/g, "-")
+    .replace(/[:\s]+/g, "-")
+    .replace(/[^a-z0-9_-]+/g, "-")
+    .replace(/-+/g, "-")
+    .replace(/^-+|-+$/g, "")
+  return normalized || "item"
+}

src/targets/droid.ts

@@ -0,0 +1,50 @@
+import path from "path"
+import { copyDir, ensureDir, writeText } from "../utils/files"
+import type { DroidBundle } from "../types/droid"
+
+export async function writeDroidBundle(outputRoot: string, bundle: DroidBundle): Promise<void> {
+  const paths = resolveDroidPaths(outputRoot)
+  await ensureDir(paths.root)
+
+  if (bundle.commands.length > 0) {
+    await ensureDir(paths.commandsDir)
+    for (const command of bundle.commands) {
+      await writeText(path.join(paths.commandsDir, `${command.name}.md`), command.content + "\n")
+    }
+  }
+
+  if (bundle.droids.length > 0) {
+    await ensureDir(paths.droidsDir)
+    for (const droid of bundle.droids) {
+      await writeText(path.join(paths.droidsDir, `${droid.name}.md`), droid.content + "\n")
+    }
+  }
+
+  if (bundle.skillDirs.length > 0) {
+    await ensureDir(paths.skillsDir)
+    for (const skill of bundle.skillDirs) {
+      await copyDir(skill.sourceDir, path.join(paths.skillsDir, skill.name))
+    }
+  }
+}
+
+function resolveDroidPaths(outputRoot: string) {
+  const base = path.basename(outputRoot)
+  // If pointing directly at ~/.factory or .factory, write into it
+  if (base === ".factory") {
+    return {
+      root: outputRoot,
+      commandsDir: path.join(outputRoot, "commands"),
+      droidsDir: path.join(outputRoot, "droids"),
+      skillsDir: path.join(outputRoot, "skills"),
+    }
+  }
+
+  // Otherwise nest under .factory
+  return {
+    root: outputRoot,
+    commandsDir: path.join(outputRoot, ".factory", "commands"),
+    droidsDir: path.join(outputRoot, ".factory", "droids"),
+    skillsDir: path.join(outputRoot, ".factory", "skills"),
+  }
+}

src/targets/index.ts

@@ -1,10 +1,13 @@
 import type { ClaudePlugin } from "../types/claude"
 import type { OpenCodeBundle } from "../types/opencode"
 import type { CodexBundle } from "../types/codex"
+import type { DroidBundle } from "../types/droid"
 import { convertClaudeToOpenCode, type ClaudeToOpenCodeOptions } from "../converters/claude-to-opencode"
 import { convertClaudeToCodex } from "../converters/claude-to-codex"
+import { convertClaudeToDroid } from "../converters/claude-to-droid"
 import { writeOpenCodeBundle } from "./opencode"
 import { writeCodexBundle } from "./codex"
+import { writeDroidBundle } from "./droid"
 
 export type TargetHandler<TBundle = unknown> = {
   name: string
@@ -26,4 +29,10 @@ export const targets: Record<string, TargetHandler> = {
     convert: convertClaudeToCodex as TargetHandler<CodexBundle>["convert"],
     write: writeCodexBundle as TargetHandler<CodexBundle>["write"],
   },
+  droid: {
+    name: "droid",
+    implemented: true,
+    convert: convertClaudeToDroid as TargetHandler<DroidBundle>["convert"],
+    write: writeDroidBundle as TargetHandler<DroidBundle>["write"],
+  },
 }

src/types/droid.ts

@@ -0,0 +1,20 @@
+export type DroidCommandFile = {
+  name: string
+  content: string
+}
+
+export type DroidAgentFile = {
+  name: string
+  content: string
+}
+
+export type DroidSkillDir = {
+  name: string
+  sourceDir: string
+}
+
+export type DroidBundle = {
+  commands: DroidCommandFile[]
+  droids: DroidAgentFile[]
+  skillDirs: DroidSkillDir[]
+}