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/v0.2-navigation.md

@@ -0,0 +1,39 @@
+# v0.2 — Vim navigation
+
+> Part of the [Typoena macro plan](macroplan.md). Requirements and targets:
+> [qfd.md](qfd.md). Load-bearing decisions: [adr.md](adr.md).
+
+**Status:** COMPLETE 2026-07-11. Navigation done in core; the **UTF-8-correct
+buffer** and **`Ctrl-d/u` half-page scroll** landed and are hardware-verified,
+and the **absolute line-number gutter** is built, host-tested, and **confirmed
+on the panel (Spike 13) 2026-07-11** — a single-line edit repaints only the rows
+at/below the change and forces no extra full refresh. Shipped early beyond scope:
+a read-only **View** mode and the full `d`/`c` operator + text-object grammar
+(see [v0.3](v0.3-editing.md) / [v0.4](v0.4-visual-and-ex.md)).
+
+- [x] Mode state machine (Normal / Insert / View), mode indicator in the status strip
+- [x] Movement: `h j k l`, `w b e`, `0 $`, `gg G`, `Ctrl-d Ctrl-u`. `Ctrl-d/u`
+      step **display** (soft-wrapped) rows, not logical lines — half a page is
+      half the visible window however prose wraps; decoded as `HalfPageDown/Up`
+      intents in the keymap, caret moves and the viewport follows.
+- [x] `i a o O A` to enter Insert
+- [x] `Esc` returns to Normal
+- [x] Line numbers in the left gutter: **absolute**, built + host-tested
+      2026-07-11, **confirmed on the panel (Spike 13) 2026-07-11** — numbered on a
+      logical line's first display row, blank on wrapped continuation rows; the
+      gutter width tracks the buffer's line count (2 digits + separator, widening
+      past 99 lines) and steals its columns from the soft-wrap. **Always on** in
+      v0.2; the on/off toggle rides the [v0.5](v0.5-palette-and-multi-file.md)
+      `.typoena.toml` prefs.
+      Relative numbering was dropped (2026-07-11): renumbering the whole gutter on
+      every `j`/`k` burns the e-ink ghosting budget for no proportionate gain,
+      whereas absolute renumbers only the rows below an edit — the on-panel check
+      confirmed a single-line edit repaints only rows at/below it with no extra
+      full refresh.
+- [x] Groundwork — UTF-8-correct buffer: caret motions and edits step by
+      character, not byte (dropped the ASCII == byte-offset assumption), so every
+      motion stays correct with accented input. **Done 2026-07-11** alongside
+      extracting the editor into a host-testable crate — char-step
+      motions/deletes, byte-vs-char split in `layout`/`caret_rc`, `word_end`/`de`
+      fixed; 15 host tests. Render font is ISO-8859-15 (Latin-9), so accented
+      glyphs display.