Use ~/.profile instead of ~/.bash_profile in README PATH setup instructions

[Copilot]

README Option B for adding scripts to PATH referenced ~/.bash_profile, which is Bash-specific and not sourced on all Linux distros. Replaced with ~/.profile for broader compatibility.

Changes

• README.md: Updated Option B heading and commands to use ~/.profile

# Before
echo 'export PATH=~/scripts:$PATH' >> ~/.bash_profile
source ~/.bash_profile

# After
echo 'export PATH=~/scripts:$PATH' >> ~/.profile
source ~/.profile

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