Add StartOS 0.4 package scaffold (manifest, main, interfaces, 2 actions)

- package/Makefile + s9pk.mk + package.json + tsconfig.json
- startos/manifest: dockerBuild source pointing at ../image/Dockerfile
- startos/main: reads /data/config.yaml reactively, passes env vars to container
- startos/interfaces: binds port 9999 as HTTP UI
- startos/actions: showPublicKey (read /data/ssh/id_ed25519.pub), configureSparks
- TS + JS bundle compile clean (tsc --noEmit, ncc build)

package/startos/i18n/dictionaries/default.ts

@@ -0,0 +1,24 @@
+export const DEFAULT_LANG = 'en_US'
+
+const dict = {
+  // main.ts
+  'Starting Spark Control…': 0,
+  'Web Interface': 1,
+  'The web interface is ready': 2,
+  'The web interface is not ready': 3,
+
+  // interfaces.ts
+  'Web UI': 4,
+  'The Spark Control web interface': 5,
+
+  // actions
+  'Show Public Key': 6,
+  'Configure Sparks': 7,
+} as const
+
+/**
+ * Plumbing. DO NOT EDIT.
+ */
+export type I18nKey = keyof typeof dict
+export type LangDict = Record<(typeof dict)[I18nKey], string>
+export default dict