docs(roadmap): add v0.2.5 international input release

US-International dead-key accents, slotted after navigation without
renumbering later versions so ADR/qfd/README anchors stay valid. Also
adds a UTF-8-correct buffer groundwork bullet to v0.2.

README.md

@@ -130,7 +130,8 @@ gantt
     v0.1 it writes, it pushes :v01, 2026-06-01, 4w
     section Vim
     v0.2 navigation           :v02, after v01, 3w
-    v0.3 editing              :v03, after v02, 3w
+    v0.2.5 international input :v025, after v02, 2w
+    v0.3 editing              :v03, after v025, 3w
     v0.4 visual + ex          :v04, after v03, 2w
     section Files
     v0.5 palette + multi-file :v05, after v04, 3w
@@ -146,6 +147,7 @@ gantt
 | ------------------------------------------------------- | ------------ | ------------------------------------------ |
 | [v0.1](docs/roadmap.md#v01--mvp-it-writes-it-pushes--)  | MVP          | Boots, edits one file, `Ctrl-G` pushes.    |
 | [v0.2](docs/roadmap.md#v02--vim-navigation--)           | Vim nav      | Normal/Insert, motions, line numbers.      |
+| [v0.2.5](docs/roadmap.md#v025--international-input--)    | Intl input   | US-Intl dead keys: à é ê ç, `'`+space = `'`. |
 | [v0.3](docs/roadmap.md#v03--vim-editing--)              | Vim edit     | `dd yy p`, undo/redo, counts.              |
 | [v0.4](docs/roadmap.md#v04--visual-mode--ex-commands--) | Visual + ex  | `v V`, `:w :q :e` command line.           |
 | [v0.5](docs/roadmap.md#v05--file-palette--multi-file--) | Files        | `Ctrl-P` over `/repo` + `/local`, buffers. |

docs/roadmap.md

@@ -35,6 +35,28 @@ Out of scope: Vim, palette, multiple files, branches, conflict handling.
 - [ ] `Esc` returns to Normal
 - [ ] Line numbers in the left gutter: relative in Normal mode (current line
       shown as its absolute number), absolute in Insert mode
+- [ ] Groundwork — UTF-8-correct buffer: caret motions and edits step by
+      character, not byte (drop the ASCII == byte-offset assumption in
+      `editor.rs`), so every motion added here and later stays correct once
+      accented input lands. Done early so it isn't retrofitted across the whole
+      motion/text-object surface. Render font is already ISO-8859-15 (Latin-9),
+      so accented glyphs display.
+
+## v0.2.5 — International input — [ ]
+
+A small focused release between navigation and editing. US-International
+dead-key accent composition, resolved in the keyboard layer (`usb_kbd.rs`) so
+the editor still receives a single `Key::Char`. Builds on the v0.2
+UTF-8-correct buffer and the ISO-8859-15 render font.
+
+- [ ] Dead keys — grave, acute, circumflex, diaeresis, tilde — compose with
+      the next letter: à é ê ë ñ, ç (via `'`+c), both cases
+- [ ] `'`+space emits a literal apostrophe (the everyday apostrophe path); a
+      dead key followed by a non-composing letter emits the accent then the
+      letter
+- [ ] A non-character event (Enter, Backspace, arrows) flushes any pending
+      accent as its literal first
+- [ ] Pending-accent indicator in the side-panel status strip
 
 ## v0.3 — Vim editing — [ ]
 

firmware/src/editor.rs

@@ -7,7 +7,10 @@
 //! on the logical (`\n`-delimited) buffer; word-wrapping and scrolling are a
 //! render-time concern handled by [`Editor::draw`].
 
-use embedded_graphics::mono_font::ascii::{FONT_6X10, FONT_10X20};
+// ISO-8859-15 (Latin-9) rather than the ascii subset: same glyph cells, but it
+// carries the accented Latin glyphs (à é ê ç … plus œ €) that international
+// input will emit. ASCII rendering is byte-for-byte unchanged.
+use embedded_graphics::mono_font::iso_8859_15::{FONT_6X10, FONT_10X20};
 use embedded_graphics::mono_font::MonoTextStyle;
 use embedded_graphics::pixelcolor::BinaryColor;
 use embedded_graphics::prelude::*;