docs: record the LazyVim profile and the auto-speak arming rule (Refs #36)

Neither setting did what it looked like it did, and the knowledge base had no
page for either, so both were invisible until the operator asked.

tools/neovim.md: the two entry points (vanilla `nvim`, `lazyvim` as an
NVIM_APPNAME profile), the fresh-box install, the base16 wallpaper-palette hook
with its SIGUSR1 contract, and the trap that matters — the official recipe
clones over ~/.config/nvim and destroys the vanilla quick-edit path.
tools/applications.md gets the editor row (Ghostty's row had lost its label)
and Neovim's verified version.

core/dankvoice.md gains the arming rule: arming is session-scoped, a silent
session start is a config state, and the two checks — `/say status` then
`pgrep -a pw-play` — prove the chain without blaming the endpoint.

kb-lint 0 violations, index-coverage 0 issues.

omp-docs/tools/applications.md

@@ -19,11 +19,11 @@ Applications that ship with or are configured on CachyOS with Niri on the workst
 
 | Application | Version | Purpose |
 |-------------|---------|---------|
-| ](ghostty/index.md) | 1.3.1 | Terminal emulator |
+| [Ghostty](ghostty/index.md) | 1.3.1 | Terminal emulator |
 | **Firefox** | 153.0 | Primary browser |
 | **Chromium** | 150.0 | Secondary browser |
 | **Nautilus** | 50.2.2 | File manager |
-| **Neovim** | 0.12.4 | Text editor |
+| [Neovim](neovim.md) | 0.12.6 | Text editor — vanilla `nvim` plus the `lazyvim` profile |
 | **Steam** | 1.0.0.86 | Gaming platform |
 
 ## System Utilities