refactor: Remove legacy backwards compat code

Remove the configure shell code blocks

installers/install_agy.sh

@@ -132,11 +132,6 @@ install_agy() {
 }
 
 configure_shell() {
-    # Clean up legacy in-place configuration blocks
-    IFS=' ' read -ra target_files <<< "$(get_shell_configs)"
-    for config_file in "${target_files[@]}"; do
-        remove_block "$config_file" "local-bin path"
-    done
 
     write_env_snippet "local-bin" 'export PATH="$HOME/.local/bin:$PATH"'
 }

installers/install_bat.sh

@@ -70,14 +70,6 @@ install_bat() {
 }
 
 configure_shell() {
-    # Clean up legacy in-place configuration blocks
-    IFS=' ' read -ra target_files <<< "$(get_shell_configs)"
-    for config_file in "${target_files[@]}"; do
-        remove_block "$config_file" "bat alias"
-    done
-    if [ -f "$HOME/.bash_aliases" ]; then
-        remove_block "$HOME/.bash_aliases" "bat alias"
-    fi
 
     write_alias_snippet "bat" "alias cat='bat --paging=never -p'"
 }

installers/install_node.sh

@@ -58,11 +58,6 @@ install_nvm() {
 }
 
 configure_shell() {
-    # Clean up legacy in-place configuration blocks
-    IFS=' ' read -ra target_files <<< "$(get_shell_configs)"
-    for config_file in "${target_files[@]}"; do
-        remove_block "$config_file" "nvm setup"
-    done
 
     local content
     content=$(cat << 'EOF'

installers/install_nvim.sh

@@ -111,24 +111,6 @@ install_config() {
 }
 
 configure_shell() {
-    # Clean up legacy inline edits from bashrc and bash_aliases
-    IFS=' ' read -ra target_files <<< "$(get_shell_configs)"
-    for config_file in "${target_files[@]}"; do
-        if [ -f "$config_file" ]; then
-            local tmp_file
-            tmp_file=$(mktemp)
-            sed '/^export EDITOR="nvim"/d' "$config_file" > "$tmp_file"
-            cat "$tmp_file" > "$config_file"
-            rm -f "$tmp_file"
-        fi
-    done
-    if [ -f "$HOME/.bash_aliases" ]; then
-        local tmp_file
-        tmp_file=$(mktemp)
-        sed '/^alias vim="nvim"/d' "$HOME/.bash_aliases" > "$tmp_file"
-        cat "$tmp_file" > "$HOME/.bash_aliases"
-        rm -f "$tmp_file"
-    fi
 
     write_alias_snippet "nvim" 'alias vim="nvim"'
     write_env_snippet "nvim" 'export EDITOR="nvim"'

installers/install_pnpm.sh

@@ -189,11 +189,6 @@ install_pnpm() {
 # ─── Shell Configuration ─────────────────────────────────────────────
 
 configure_shell() {
-    # Clean up legacy in-place configuration blocks
-    IFS=' ' read -ra target_files <<< "$(get_shell_configs)"
-    for config_file in "${target_files[@]}"; do
-        remove_block "$config_file" "pnpm setup"
-    done
 
     # pnpm's `setup --force` configures PNPM_HOME and PATH automatically,
     # but we also add an env block to ensure PNPM_HOME is set consistently.

installers/install_rust.sh

@@ -95,11 +95,6 @@ configure_shell() {
     # Add ~/.cargo/bin to PATH for the current process
     export PATH="$HOME/.cargo/bin:$PATH"
 
-    # Clean up legacy in-place configuration blocks
-    IFS=' ' read -ra target_files <<< "$(get_shell_configs)"
-    for config_file in "${target_files[@]}"; do
-        remove_block "$config_file" "rust init"
-    done
 
     write_env_snippet "rust" '. "$HOME/.cargo/env"'
 }

installers/install_starship.sh

@@ -74,12 +74,6 @@ configure_shell() {
     # Add ~/.local/bin to PATH for the current process
     export PATH="$HOME/.local/bin:$PATH"
 
-    # Clean up legacy in-place configuration blocks
-    IFS=' ' read -ra target_files <<< "$(get_shell_configs)"
-    for config_file in "${target_files[@]}"; do
-        remove_block "$config_file" "local-bin path"
-        remove_block "$config_file" "starship init"
-    done
 
     write_env_snippet "local-bin" 'export PATH="$HOME/.local/bin:$PATH"'
     write_env_snippet "starship" 'eval "$(starship init bash)"'

installers/install_uv.sh

@@ -85,12 +85,6 @@ configure_shell() {
     # Add ~/.local/bin to PATH for the current process
     export PATH="$HOME/.local/bin:$PATH"
 
-    # Clean up legacy in-place configuration blocks
-    IFS=' ' read -ra target_files <<< "$(get_shell_configs)"
-    for config_file in "${target_files[@]}"; do
-        remove_block "$config_file" "local-bin path"
-        remove_block "$config_file" "uv completion"
-    done
 
     write_env_snippet "local-bin" 'export PATH="$HOME/.local/bin:$PATH"'
     write_env_snippet "uv" 'eval "$(uv generate-shell-completion bash)"'

installers/install_yazi.sh

@@ -22,11 +22,6 @@ cleanup() {
 trap cleanup EXIT
 
 add_y_wrapper() {
-    # Clean up legacy in-place configuration blocks
-    IFS=' ' read -ra target_files <<< "$(get_shell_configs)"
-    for config_file in "${target_files[@]}"; do
-        remove_block "$config_file" "yazi wrapper"
-    done
 
     local wrapper_content
     wrapper_content=$(cat << 'EOF'

installers/install_zoxide.sh

@@ -49,11 +49,6 @@ configure_shell() {
     # Add ~/.local/bin to PATH for the current process
     export PATH="$HOME/.local/bin:$PATH"
 
-    # Clean up legacy in-place configuration blocks
-    IFS=' ' read -ra target_files <<< "$(get_shell_configs)"
-    for config_file in "${target_files[@]}"; do
-        remove_block "$config_file" "zoxide init"
-    done
 
     write_env_snippet "local-bin" 'export PATH="$HOME/.local/bin:$PATH"'
     write_env_snippet "zoxide" 'eval "$(zoxide init --cmd cd bash)"'