fix: correct corrupted shebang in prepare_hitl_agent.sh

[nam20485]

Summary

Line 1 of MaxKernel/prepare_hitl_agent.sh has a corrupted shebang — source#!/bin/bash instead of #!/bin/bash. This was introduced in commit 54e6df5 and has been present since.

Error

$ ./prepare_hitl_agent.sh
./prepare_hitl_agent.sh: line 1: source#!/bin/bash: No such file or directory

The script still runs (bash falls back after the invalid shebang fails), but the error prints on every invocation, which is confusing for first-time users.

Fix

-source#!/bin/bash
+#!/bin/bash

The sibling script prepare_auto_agent.sh has the correct #!/bin/bash on line 1, confirming this is a typo.

Testing

Verified the script runs cleanly with no spurious error after the fix.

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[gemini-code-assist]

Code Review

This pull request corrects a syntax error in the shebang of the MaxKernel/prepare_hitl_agent.sh script, changing source#!/bin/bash to #!/bin/bash. I have no further feedback to provide as the change is straightforward and correct.