Remove fish_variables from version control

[Copilot]

fish_variables is an auto-generated fish universal variable state file that was committed to the repo. While no active secrets were present, the file contained personal system paths and — critically — any set -Ux variable (API keys, tokens, etc.) would be serialized here and silently committed.

Changes

• Removed fish/.config/fish/fish_variables from git tracking (git rm --cached)
• Added .gitignore entry to permanently exclude the file

# Fish shell universal variables - machine-specific and may contain sensitive environment variables
fish/.config/fish/fish_variables

Original prompt

---

This section details on the original issue you should resolve

<issue_title>Exposed secreta</issue_title>
<issue_description>Is there any exposed secrets in this repo</issue_description>

<agent_instructions>Check if there’s any exposed secrets </agent_instructions>

Comments on the Issue (you are @copilot in this section)

• Fixes Exposed secreta #1

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