feat(editor): / forward search with n/N repeat (v0.7)

Literal case-sensitive substring search sharing the : command line's
editing (cmd_prompt discriminates the prompt; Enter dispatches). Jumps
on Enter only — incremental caret-chasing loses to the e-ink refresh
cost, same call as the snippet no-popup decision. Wraps with a notice,
keeps the caret on a miss, bare / repeats the editor-global last
pattern. n/N live in move_by so counts and Visual extension come free;
they are not operator targets.

docs/v0.7-search-and-git.md

@@ -3,11 +3,21 @@
 > Part of the [Typoena macro plan](macroplan.md). Requirements and targets:
 > [qfd.md](qfd.md). Load-bearing decisions: [adr.md](adr.md).
 
-**Status:** the **`:gl` pull command landed in the editor** (2026-07-11,
+**Status:** **`/` search + `n N` done in core** (2026-07-13, host-tested — 207
+editor tests). The **`:gl` pull command landed in the editor** (2026-07-11,
 host-tested) — `Effect::Pull` + a firmware stub; the on-device fetch +
-fast-forward is still to build. Search not started.
+fast-forward is still to build.
 
-- [ ] `/` forward search, `n N`
+- [x] `/` forward search, `n N` — done in core 2026-07-13 (host-tested).
+      Literal, case-sensitive substring (no regex on-device, no smartcase
+      surprises); `/` reuses the `:` command line's editing with a `/` prompt
+      (one command-line mode, as in vim), and the jump happens on **Enter
+      only** — no incremental caret-chasing, for the same e-ink-refresh reason
+      snippets have no completion popup. Wraps around with a "wrapped" notice;
+      "not found: pat" leaves the caret alone; a bare `/`+Enter repeats the
+      last pattern, which is editor-global (survives buffer switches, like
+      vim's search register). `n`/`N` are motions (counts work, Visual extends
+      over them); deliberately **not** operator targets (`dn` out of scope).
 - [~] `:gl` — pull: fetch + **fast-forward only**, refuse on divergence and
       surface it (renamed from the planned `:Gpull`). Editor command +
       `Effect::Pull` done 2026-07-11 (host-tested); the git-thread