fix: add TTY handling for password prompts and config get alias

- Fixed getpass TTY error by checking sys.stdin.isatty() before prompting
- Added environment variable fallback for non-interactive environments (AITBC_WALLET_PASSWORD)
- Added config get command as alias for show command
- Wrapped getpass calls in try/except for better error handling
- Fixes termios.error in non-interactive environments like CI/scripts

cli/aitbc_cli/commands/config.py

@@ -34,6 +34,13 @@ def show(ctx):
     output(config_dict, ctx.obj['output_format'])
 
 
+@config.command(name="get")
+@click.pass_context
+def get(ctx):
+    """Get current configuration (alias for show)"""
+    return ctx.invoke(show)
+
+
 @config.command()
 @click.argument("key")
 @click.argument("value")

cli/aitbc_cli/commands/wallet.py

@@ -43,9 +43,28 @@ def _get_wallet_password(wallet_name: str) -> str:
     except Exception:
         pass
 
+    # Check if we're in a TTY environment
+    import sys
+    if not sys.stdin.isatty():
+        # Non-interactive: try environment variable
+        password = os.environ.get(f"AITBC_WALLET_PASSWORD_{wallet_name.upper()}")
+        if password:
+            return password
+        # Try generic password env var
+        password = os.environ.get("AITBC_WALLET_PASSWORD")
+        if password:
+            return password
+        error("No TTY available for password prompt. Set AITBC_WALLET_PASSWORD environment variable.")
+        raise click.Abort()
+
     # Prompt for password
     while True:
-        password = getpass.getpass(f"Enter password for wallet '{wallet_name}': ")
+        try:
+            password = getpass.getpass(f"Enter password for wallet '{wallet_name}': ")
+        except Exception as e:
+            error(f"Password prompt failed: {e}")
+            raise click.Abort()
+        
         if not password:
             error("Password cannot be empty")
             continue