config(nvim): add AstroNvim config; font: VictorMono NF via packages

nvim added static from live home; vendored .git/tool-state dirs removed
and ignore-gated against re-add. ttf-victor-mono-nerd (arch) and
font-victor-mono-nerd-font cask (darwin) added to packages manifest.

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>

.chezmoiignore.tmpl

@@ -9,6 +9,11 @@ README.md
 .config/tmux/plugins/**
 .config/fish/fish_variables
 .config/nvim/lazy-lock.json
+.config/nvim/.git
+.config/nvim/.git/**
+.config/nvim/.omc/**
+.config/nvim/.crush/**
+.config/nvim/.understand-anything/**
 
 {{ if ne .chezmoi.os "linux" }}
 # Arch desktop layer — linux only
@@ -24,4 +29,11 @@ README.md
 .config/systemd
 .config/systemd/**
 .local/bin/niri-launch
+.config/fish/auto-Niri.fish
+.config/fish/functions/cp-appid.fish
+.config/tmux/niri-title.sh
 {{ end }}
+
+# Runtime plugin state with embedded tokens — never managed
+.config/noctalia/plugins
+.config/noctalia/plugins/**