Pass password to agent securely

Pass secrets to agents without exposing them

Handing secrets to agent subprocesses without printing them in chat logs—prevents accidental exposure in transcripts.

• · File path (e.g., ~/.secret_pw)
• · Secret content (base64-encoded)

• · $PWB64 environment variable
• · Unset after task completion

• · base64 CLI
• · Bash environment variables

• · Secret stored in base64 file
• · File path known

• · File not found
• · Base64 decode fails
• · Environment variable leaked

• · Explicit cleanup (rm, unset)
• · Base64 encoding prevents plaintext in files