fix: Fix bugs in dotfiles

[iduuck]

Summary

Fixed multiple bugs across dotfiles configuration:

• git-merge-branch: Fixed git diff syntax from origin/$main_branch..$main_branch to origin/$main_branch $main_branch
• git-up: Removed duplicate git fetch origin call
• tmux-sessionizer: Replaced hardcoded /Users/nick path with $HOME variable
• Brewfile: Removed duplicate fzf package entry
• kitty.conf: Updated deprecated adjust_line_height to modify_font cell_height
• nvim file_types.lua: Changed opts to init function for proper plugin initialization
• nvim-tree.lua: Fixed dependency structure by wrapping nvim-window-picker in table brackets
• wezterm.lua: Replaced hardcoded /Users/nick/dev with wezterm.home_dir .. "/dev" and fixed MoveTabRelative(-1) to MoveTabRelative(1)
• zshrc: Replaced all hardcoded /Users/nick paths with $HOME variable for portability

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Note

Low Risk
Low risk: updates are limited to local developer tooling/scripts and config tweaks, primarily fixing path portability and minor behavior/config deprecations.

Overview
Fixes and hardens several local tooling scripts/configs: corrects git-merge-branch's origin sync check, removes a redundant fetch in git-up, and replaces hardcoded /Users/nick paths with $HOME/wezterm.home_dir for portability (including tmux-sessionizer and zshrc).

Cleans up and modernizes configs by removing duplicate fzf in the Brewfile, updating Kitty’s deprecated line-height setting, adjusting WezTerm tab-move keybinding direction, and fixing Neovim plugin initialization/dependency declarations (file_types.lua, nvim-tree.lua).

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