feat(cli): support CLAWDHUB_DIR env var and config.json for skills directory

Add support for configuring the skills install directory via:
- CLAWDHUB_DIR environment variable
- dir field in config.json

Priority: CLI flag (--dir) > ENV > config > default ('skills')

Author: bradleypriest

packages/clawdhub/README.md

@@ -54,4 +54,4 @@ clawdhub sync --root ../clawdis/skills --all --dry-run
 - Site: `https://clawdhub.com` (override via `--site` or `CLAWDHUB_SITE`)
 - Registry: discovered from `/.well-known/clawdhub.json` on the site (override via `--registry` or `CLAWDHUB_REGISTRY`)
 - Workdir: current directory (falls back to Clawdbot workspace if configured; override via `--workdir` or `CLAWDHUB_WORKDIR`)
-- Install dir: `./skills` under workdir (override via `--dir`)
+- Install dir: `./skills` under workdir (override via `--dir`, `CLAWDHUB_DIR`, or `dir` in config.json)

packages/clawdhub/src/cli.ts

@@ -34,15 +34,17 @@ const program = new Command()
   .showSuggestionAfterError()
   .addHelpText(
     'after',
-    styleEnvBlock('\nEnv:\n  CLAWDHUB_SITE\n  CLAWDHUB_REGISTRY\n  CLAWDHUB_WORKDIR\n'),
+    styleEnvBlock('\nEnv:\n  CLAWDHUB_SITE\n  CLAWDHUB_REGISTRY\n  CLAWDHUB_WORKDIR\n  CLAWDHUB_DIR\n'),
   )
 
 configureCommanderHelp(program)
 
 async function resolveGlobalOpts(): Promise<GlobalOpts> {
   const raw = program.opts<{ workdir?: string; dir?: string; site?: string; registry?: string }>()
   const workdir = await resolveWorkdir(raw.workdir)
-  const dir = resolve(workdir, raw.dir ?? 'skills')
+  const config = await readGlobalConfig()
+  const dirRel = raw.dir ?? process.env.CLAWDHUB_DIR ?? config?.dir ?? 'skills'
+  const dir = resolve(workdir, dirRel)
   const site = raw.site ?? process.env.CLAWDHUB_SITE ?? DEFAULT_SITE
   const registrySource = raw.registry ? 'cli' : process.env.CLAWDHUB_REGISTRY ? 'env' : 'default'
   const registry = raw.registry ?? process.env.CLAWDHUB_REGISTRY ?? DEFAULT_REGISTRY

packages/clawdhub/src/schema/schemas.ts

@@ -3,6 +3,7 @@ import { type inferred, type } from 'arktype'
 export const GlobalConfigSchema = type({
   registry: 'string',
   token: 'string?',
+  dir: 'string?',
 })
 export type GlobalConfig = (typeof GlobalConfigSchema)[inferred]