Swap published columns for 24 entries from random.md

Retract the seven published columns into drafts/ and promote the 24 per-date
entries split out of Notes/random.md. Bodies are verbatim; titles, subjects
and slugs are new.

Make publication a matter of location. Notes/Notes.11tydata.js gives anything
under Notes/ permalink: false unless tagged `column`; drafts/drafts.11tydata.js
renders drafts at their real permalink under `yarn dev` and excludes them from
collections entirely in a build, so no template can surface one. Publishing is
now `git mv drafts/<file> columns/`, and moving it back retracts it.

Untagged notes were previously rendered into _site/ and deployed — including
Notes/random.md, which was live at /Notes/random/.

drafts/2026-05-14-thrilling.md

@@ -0,0 +1,9 @@
+---
+title: 12-Watt Bulbs 
+date: 2026-05-14
+layout: column.njk
+tags: [column, society]
+permalink: /columns/2026/thrilling/
+---
+
+Was I late? Was the party over? It seemed like everyone in the know had already gone off to launch some new venture I wasn't involved in. Raptured while the rest of us left behind shuffled around and shared second-hand stories about how great things used to be, so we'd heard. Meanwhile the excitement seemed to have long since faded. But what do I know, really? Maybe this has always been the case. Everywhere you look there are pockets of nostalgics lamenting the way things used to be (whether they had been there or not). The excited people had maybe just gone to lunch, doing exciting things over their exciting salads. So it's all a bit ridiculous. If we find ourselves hanging around dullards, and choosing to stay, then the lack of luminance in our jaded lives might have less to do with their nostalgia or cynicism. If we can't muster our own excitement, would we even know where to find it? Would we even try?