docs(macroplan): split each version into its own page

Move each version's scope checklist and status out of the monolithic
macroplan into a dedicated docs/vX.Y-<slug>.md page; macroplan keeps the
source block, the rollup status, and a one-line summary + link per
version. v0.1 reuses its existing product/technical pages.

Also drop the "Optional column ruler at 80" requirement from v0.6.

docs/v1.0-polish.md

@@ -0,0 +1,16 @@
+# v1.0 — Polish
+
+> Part of the [Typoena macro plan](macroplan.md). Requirements and targets:
+> [qfd.md](qfd.md). Load-bearing decisions: [adr.md](adr.md).
+
+**Status:** not started.
+
+- [ ] Boot time ≤ 3 s to usable cursor — currently ~4.26 s; the ~1.9 s cold-boot
+      full refresh is a hard e-ink floor, so ≤ 3 s is marginal (see
+      [`notes/boot-time-budget.md`](notes/boot-time-budget.md))
+- [ ] Font selection (at least one serif + one mono) with adjustable font
+      size, switchable at runtime and persisted across reboots
+- [ ] Theme: light / dark (inverted e-ink), switchable at runtime and
+      persisted across reboots
+- [ ] Enclosure design files in `hardware/`
+- [ ] User guide