feat(mise): add bat, rebuild theme cache

Add bat to mise tool list, rebuild bat theme cache after install
to keep delta syntax themes in sync. Handle delta version check
failure gracefully.

Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>

install.d/30-mise.sh

@@ -57,6 +57,7 @@ eval "$(mise activate bash)"
 export PATH="$HOME/.local/share/mise/shims:$PATH"
 
 typeset -a MISE_APPS=(
+    "bat@latest"
     "fzf@latest"
     "zoxide@latest"
     "ripgrep@latest"
@@ -78,6 +79,9 @@ for tool in "${MISE_APPS[@]}"; do
     mise use -g "$tool"
 done
 
+# Rebuild bat theme cache with mise-installed bat (must match delta's syntect version)
+bat cache --build 2>/dev/null
+
 if [[ "$DOTS_ENV" != "codespaces" ]]; then
     # Setup Poetry ZSH completions (XDG compliant)
     COMPLETIONS_DIR="${XDG_DATA_HOME:-$HOME/.local/share}/zsh/completions"
@@ -101,8 +105,9 @@ log_info "Verifying installations..."
         echo "fastfetch: $(mise exec -- fastfetch --version 2>&1 | head -1)"
     fi
     echo "fzf $(fzf --version)"
+    bat --version | head -1
     zoxide --version
     rg --version | head -1
-    delta --version | head -1
+    delta --version 2>/dev/null | head -1 || echo "delta: installed (version check failed)"
 } | log_quote
 log_pass "mise tools installed"