heph.nvim: :Heph home — a base index/landing page for the zk

A single designated "home" doc (open-or-create by title, configurable via
opts.home, default "Home") — a stable landing page to grow a map of content
around. e2e covers create-on-first-open + idempotent reuse.

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>

heph.nvim/lua/heph/command.lua

@@ -9,6 +9,10 @@ local ATTENTIONS = { "white", "orange", "red", "blue" }
 --- subcommand -> handler(args: string[])
 M.subs = {
   -- knowledge base
+  home = function()
+    local cfg = require("heph").config or {}
+    require("heph.home").open(cfg.home)
+  end,
   today = function()
     require("heph.journal").open()
   end,