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/v0.3-editing.md

@@ -0,0 +1,30 @@
+# v0.3 — Vim editing
+
+> Part of the [Typoena macro plan](macroplan.md). Requirements and targets:
+> [qfd.md](qfd.md). Load-bearing decisions: [adr.md](adr.md).
+
+**Status:** COMPLETE in core 2026-07-11, host-tested (65 editor + 28 keymap
+tests) and **partially smoke-tested on the panel 2026-07-11**. The three
+remaining pieces landed together: a single unnamed **register** with
+`y`/`yy`/`p`/`P` (and `x`/`d`/`c` filling it, so `dd`…`p` moves a line),
+**undo/redo** (`u`/`Ctrl-r`, snapshot-based, bounded to 100 groups in PSRAM — a
+whole Insert session undoes as one group), and **`.` repeat** (keystroke-recorded,
+so it replays an insert session like `ciwfoo<Esc>`). The `d`/`c` operator grammar
+and text objects had already landed ahead of schedule. On device, `dd`, `yy`, and
+`Ctrl-r` confirmed good; the one issue found was that a **multi-line paste near
+the bottom left its later lines below the fold** — `adjust_scroll` only kept the
+caret's (first) pasted line visible. Fixed by a `reveal()` that scrolls the end of
+the pasted block into view while the caret stays on its first line (reflash to
+re-confirm on panel).
+
+- [x] `x dd`, `dw dd d$` (✓); `yy p P` (✓) and `.` repeat (✓) — register + a
+      keystroke-recorded last-change both landed 2026-07-11
+- [x] Undo / redo (`u`, `Ctrl-r`) — snapshot history bounded to 100 groups in
+      PSRAM; one Insert session = one undo group
+- [x] Numeric prefixes (`3dd`, `5j`)
+- [x] Ahead of schedule: `c` change operator + text objects
+      (`ciw`, `di(`, `ca"`, … — inner/around, nesting-aware)
+
+Known limits (deferred): `.` drops a *leading* count (`3x` then `.` deletes one;
+a count inside an operator like `d2w` is kept); no named registers; `.` after an
+aborted operator (`d<Esc>`) is a no-op.