Add buffer position display and documentation improvements.

- Display buffer position prefix "[x/N]" in GUI and terminal renderers.
- Improve `kte` and `kge` man pages with frontend usage details and project homepage.
- Update README with GUI invocation instructions.
- Bump version to 1.0.0.

README.md

@@ -2,8 +2,8 @@ kte — Kyle's Text Editor
 
 Vision
 -------
-kte will be a small, fast, and understandable text editor with a
-terminal<EFBFBD>first UX and an optional ImGui GUI. It modernizes the
+kte is a small, fast, and understandable text editor with a
+terminal-first UX and an optional ImGui GUI. It modernizes the
 original ke editor while preserving its familiar WordStar/VDE‑style
 command model and Emacs‑influenced ergonomics. The focus is on
 simplicity of design, excellent latency, and pragmatic features you
@@ -80,6 +80,15 @@ Interfaces
 - GUI: an optional ImGui‑based frontend that embeds the same editor
   core.
 
+Man pages
+---------
+
+- Terminal editor: `docs/kte.1` (view locally with `man -l docs/kte.1`)
+- GUI frontend: `docs/kge.1` (view locally with `man -l docs/kge.1`)
+
+The `ke` keybinding reference remains the canonical source for
+commands while kte evolves: see `docs/ke.md`.
+
 Architecture (intended)
 -----------------------
 
@@ -180,6 +189,15 @@ Run:
 ./cmake-build-debug/kte [files]
 ```
 
+If you configured the GUI, you can also run the GUI-first target (when
+built as `kge`) or request the GUI from `kte`:
+
+```
+./cmake-build-debug/kte --gui [files]
+# or if built/installed as a separate GUI target
+./cmake-build-debug/kge [files]
+```
+
 GUI build example
 -----------------