feat(ssh): embed password in sshCommand via sshpass

- buildSshCommand: when no key → sshpass -p <sshUser> ssh ...
- sshUser is also the default password (set via chpasswd at build time)
- Result: one command from clone/create output connects immediately
- Key auth path unchanged (ssh -i <key> ...)
- INVARIANT: sshCommand from REST API is always directly executable

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

Author: skulidropek

packages/lib/src/usecases/projects-core.ts

@@ -18,12 +18,16 @@ const sshOptions = "-tt -Y -o LogLevel=ERROR -o StrictHostKeyChecking=no -o User
 
 export type ProjectLoadError = PlatformError | ConfigNotFoundError | ConfigDecodeError
 
+// CHANGE: use sshpass when no key provided so the command works without interaction
+// WHY: password = sshUser (set via chpasswd at build time); sshpass embeds it in one command
+// PURITY: CORE
+// INVARIANT: sshKey !== null → key auth; sshKey === null → sshpass with default password
 export const buildSshCommand = (
   config: TemplateConfig,
   sshKey: string | null
 ): string =>
   sshKey === null
-    ? `ssh ${sshOptions} -p ${config.sshPort} ${config.sshUser}@localhost`
+    ? `sshpass -p ${config.sshUser} ssh ${sshOptions} -p ${config.sshPort} ${config.sshUser}@localhost`
     : `ssh -i ${sshKey} ${sshOptions} -p ${config.sshPort} ${config.sshUser}@localhost`
 
 export type ProjectSummary = {