refactor: modularize post-install setup script

Break down monolithic script into focused components:
- 00-system-prep.sh: system updates and Flathub
- 01-package-install.sh: system packages and Flatpaks
- 02-dev-tools-setup.sh: Neovim, fonts, shell tools
- 03-fedora-dotnet-setup.sh: .NET development environment
- 04-config-symlinks.sh: dotfile symlinking

Fixes:
- Use rpm -q for accurate package checks
- Dynamic Fedora version detection
- Replace neofetch with fastfetch
- Correct dotfile names (aliases.zsh, commit-conventions.txt)

scripts/04-config-symlinks.sh

@@ -0,0 +1,51 @@
+#!/bin/bash
+
+# 04-config-symlinks.sh
+# Copies Starship config and symlinks dotfiles.
+# Relies on SCRIPT_ROOT_DIR being set by the caller.
+
+echo "--- Starting Configuration and Symlinking ---"
+
+if [ -z "$SCRIPT_ROOT_DIR" ]; then
+    echo "ERROR: SCRIPT_ROOT_DIR must be set in the environment."
+    exit 1
+fi
+
+# Starship Config File
+STARSHIP_CONFIG_SOURCE="${SCRIPT_ROOT_DIR}/terminal/starship.toml"
+STARSHIP_CONFIG_DEST_DIR="$HOME/.config"
+STARSHIP_CONFIG_DEST_FILE="${STARSHIP_CONFIG_DEST_DIR}/starship.toml"
+
+echo "Setting up Starship configuration..."
+if [ -f "$STARSHIP_CONFIG_SOURCE" ]; then
+    mkdir -p "$STARSHIP_CONFIG_DEST_DIR"
+    cp "$STARSHIP_CONFIG_SOURCE" "$STARSHIP_CONFIG_DEST_FILE"
+    echo "Copied starship.toml to $STARSHIP_CONFIG_DEST_FILE"
+else
+    echo "WARNING: Starship config source not found: $STARSHIP_CONFIG_SOURCE. Skipping copy."
+fi
+
+# Symlink files (keeping the original simple approach)
+echo "Symlinking dotfiles..."
+FILES=('vimrc' 'vim' 'zshrc' 'zsh' 'agignore' 'gitconfig' 'gitignore' 'commit-conventions.txt' 'aliases.zsh')
+
+for file in "${FILES[@]}"; do
+    echo ""
+    echo "Symlinking $file to $HOME"
+    
+    # Check if source file exists first
+    if [ -e "${SCRIPT_ROOT_DIR}/${file}" ]; then
+        ln -sf "${SCRIPT_ROOT_DIR}/${file}" "$HOME/.$file"
+        if [ $? -eq 0 ]; then
+            echo "${SCRIPT_ROOT_DIR}/${file} ~> $HOME/.$file"
+        else
+            echo "Install failed to symlink $file."
+            exit 1
+        fi
+    else
+        echo "WARNING: Source file not found: ${SCRIPT_ROOT_DIR}/${file}. Skipping."
+    fi
+done
+
+echo "--- Configuration and Symlinking Finished ---"
+