Coexist with a desktop that already manages its tools (Omarchy)

On an Omarchy laptop bootstrap left two of almost everything: VS Code from
both pacman and the tarball (two menu entries, one shared ~/.config/Code
profile), and kubectl/helm/k9s/kubectx/yq/jq/node/ansible in ~/.local/bin
behind mise and pacman copies that always won on PATH. The zsh helpers
(op*, grmb, secrets.env) also never reached the bash login shell.

- lib/fetch.sh: add `shadowed`, true when another copy of a tool comes
  earlier on PATH than ~/.local/bin. Always false where zshrc puts
  ~/.local/bin first, so VM installs are unchanged.
- bin/, node/, ansible/: skip tools that are shadowed.
- vscode/: defer to any system `code`, and remove a tarball copy this
  module installed earlier.
- bash/: new module; bash port of the zshrc helpers, sourced from
  ~/.bashrc via a marked block. No-ops without ~/.bashrc.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

bin/install.sh

@@ -238,35 +238,42 @@ install_coder() {
 # The subshell re-enables `set -e` inside itself (it is disabled for a command
 # being tested by `if`), so a failed download still aborts that tool's function
 # before mark_version stamps a version that was never installed.
+#
+# try <install_fn> <binary> also skips the tool when another <binary> already
+# wins on PATH (see `shadowed` in lib/fetch.sh): a copy here would never run.
 FAILED=""
 try() {
+  if _winner="$(shadowed "$2")"; then
+    fsay "$2: $_winner comes first on PATH; skipping (a copy in $BIN_DIR would never run)."
+    return 0
+  fi
   if ( set -e; "$1" ); then return 0; fi
   FAILED="$FAILED ${1#install_}"
   fsay "WARNING: ${1#install_} failed to install; continuing."
 }
 
-try install_jq
-try install_kubectl
-try install_oidc_login
-try install_helm
-try install_k9s
+try install_jq jq
+try install_kubectl kubectl
+try install_oidc_login kubectl-oidc_login
+try install_helm helm
+try install_k9s k9s
 if docker_full_available; then
-  try install_kind
+  try install_kind kind
 else
   fsay "Skipping kind: full (non-rootless) Docker not available."
 fi
-try install_kubectx
-try install_kubens
-try install_stern
-try install_yq
-try install_tofu
-try install_task
-try install_terragrunt
-try install_1p
-try install_opencode
-try install_zarf
-try install_packer
-try install_coder
+try install_kubectx kubectx
+try install_kubens kubens
+try install_stern stern
+try install_yq yq
+try install_tofu tofu
+try install_task task
+try install_terragrunt terragrunt
+try install_1p op
+try install_opencode opencode
+try install_zarf zarf
+try install_packer packer
+try install_coder coder
 
 if [ -n "$FAILED" ]; then
   fsay ""