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/01-package-install.sh

@@ -0,0 +1,122 @@
+#!/bin/bash
+
+# 01-package-install.sh
+# Installs system packages and Flatpak applications.
+# Relies on DISTRO and PACKAGE_MANAGER being set by the caller.
+
+echo "--- Starting Package Installation ---"
+
+if [ -z "$DISTRO" ] || [ -z "$PACKAGE_MANAGER" ]; then
+    echo "ERROR: DISTRO and PACKAGE_MANAGER must be set in the environment."
+    exit 1
+fi
+
+# Define base package list
+BASE_PACKAGE_LIST=(
+    btop
+    curl
+    git
+    gh
+    fd-find
+    flatpak
+    python3
+    python3-pip
+    ripgrep
+    virt-manager
+    zsh
+    wget
+    unzip
+)
+
+# Distro-specific packages to add to the main list
+DISTRO_SPECIFIC_PACKAGES=()
+if [ "$PACKAGE_MANAGER" == "dnf" ]; then
+    DISTRO_SPECIFIC_PACKAGES+=(
+        "fontconfig-devel"  # for fc-cache
+        "openssl-devel"     # for various compilations
+        "util-linux-user"   # for chsh, if needed by OhMyZsh script
+    )
+elif [ "$PACKAGE_MANAGER" == "apt" ]; then
+    DISTRO_SPECIFIC_PACKAGES+=(
+        "libfontconfig-dev"
+        "libssl-dev"
+        "fd-find" # On Debian/Ubuntu, binary is fdfind, symlink to fd often needed
+                  # Or user might prefer 'fd' package if available from other sources
+    )
+fi
+
+# Combine package lists
+PACKAGE_LIST=("${BASE_PACKAGE_LIST[@]}" "${DISTRO_SPECIFIC_PACKAGES[@]}")
+PACKAGE_LIST=($(printf "%s\n" "${PACKAGE_LIST[@]}" | LC_ALL=C sort -u))
+
+
+FLATPAK_LIST=(
+    com.bitwarden.desktop
+    com.github.tchx84.Flatseal
+    com.valvesoftware.Steam
+    net.davidotek.pupgui2
+    net.veloren.airshipper
+    org.videolan.VLC
+)
+
+echo "Installing System Packages..."
+for package_name in "${PACKAGE_LIST[@]}"; do
+    if [ "$PACKAGE_MANAGER" == "dnf" ]; then
+        if ! rpm -q "$package_name" &>/dev/null; then
+            echo "Installing $package_name (dnf)..."
+            if sudo dnf install "$package_name" -y; then
+                echo "$package_name has been installed."
+            else
+                echo "WARNING: Failed to install $package_name. It may not be available in the repositories."
+            fi
+        else
+            echo "$package_name already installed."
+        fi
+
+    elif [ "$PACKAGE_MANAGER" == "apt" ]; then
+        # For apt, check if package provides the command or is installed
+        # dpkg-query is generally more reliable for checking installed status
+        actual_package_name=$package_name
+        if [ "$package_name" == "fd-find" ] && ! dpkg -s fd-find &>/dev/null ; then
+            # On some newer Ubuntu/Debian, 'fd-find' might be the package,
+            # but user might want 'fd' if it's a different source or a metapackage.
+            # For now, we stick to fd-find.
+            : # Keep actual_package_name as fd-find
+        fi
+
+        if ! dpkg-query -W -f='${Status}' "$actual_package_name" 2>/dev/null | grep -q "ok installed"; then
+            echo "Installing $actual_package_name (apt)..."
+            sudo apt install "$actual_package_name" -y
+            echo "$actual_package_name has been installed."
+        else
+            echo "$actual_package_name already installed."
+        fi
+    fi
+done
+
+# Post-install for fd-find on Debian/Ubuntu (create symlink)
+if [ "$PACKAGE_MANAGER" == "apt" ] && command -v fdfind &>/dev/null && ! command -v fd &>/dev/null; then
+    if dpkg-query -W -f='${Status}' "fd-find" 2>/dev/null | grep -q "ok installed"; then
+        echo "Creating symlink for fd from fdfind..."
+        sudo ln -sf /usr/bin/fdfind /usr/local/bin/fd # or ~/.local/bin/fd if preferred
+    fi # Ensure this line is just 'fi' (and optional comment)
+fi
+
+
+echo "Installing Flatpak Applications..."
+if command -v flatpak &> /dev/null; then
+    for flatpak_name in "${FLATPAK_LIST[@]}"; do
+        if ! flatpak list --app | grep -q "$flatpak_name"; then
+            echo "Installing Flatpak $flatpak_name..."
+            flatpak install flathub "$flatpak_name" -y
+            echo "$flatpak_name has been installed."
+        else
+            echo "Flatpak $flatpak_name already installed."
+        fi
+    done
+else
+    echo "WARNING: flatpak command not found. Skipping Flatpak app installation."
+fi
+
+echo "--- Package Installation Finished ---"
+