Spiffy new versions of components, some housekeeping

manuscript/README-UI.md

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+# How to read this book
+
+## Structure
+
+1. "Recipes" generally follow on from each other. I.e., if a particular recipe requires a mail server, that mail server would have been described in an earlier recipe.
+2. Each recipe contains enough detail in a single page to take a project from start to completion.
+3. When there are optional add-ons/integrations possible to a project (_i.e., the addition of "smart LED bulbs" to Home Assistant_), this will be reflected either as a brief "Chef's note" after the recipe, or if they're substantial enough, as a sub-page of the main project
+
+## Conventions
+
+1. When creating swarm networks, we always explicitly set the subnet in the overlay network, to avoid potential conflicts (_which docker won't prevent, but which will generate errors_) (https://github.com/moby/moby/issues/26912)