docs: fill out compat, lvglh, and toolchain documentation

Replace placeholder content in doc/compat/, doc/lvglh/, and
doc/toolchain/ with comprehensive documentation derived from the
source files.

- compat: document Wasuro WASM VM compatibility shims
- lvglh: document LVGL v9.2.2 configuration, fonts, and patches
- toolchain: document all 13 build pipeline scripts

doc/lvglh/hack_14.md

@@ -1 +1,53 @@
-# Placeholder
+# hack_14.c
+
+LVGL bitmap font source for the Hack Regular typeface at 14 px.
+
+## Overview
+
+This file contains a pre-rendered bitmap font generated from the Hack Regular TrueType font (`Hack-Regular.ttf`) for use with LVGL. It provides a complete monospaced programmer font covering the full Basic Multilingual Plane (Unicode range 0x0000--0xFFFF). The font is intended for use in terminal emulators, code editors, or any UI element within Asuro that benefits from a fixed-width typeface.
+
+The file was generated by the LVGL font converter tool and is approximately 12,900 lines (~548 KB) of static bitmap and glyph descriptor data.
+
+## Configuration Options / Defines
+
+### HACK_14
+Value: `1` (default). Acts as a compile-time guard. Set to `0` to exclude this font from the build entirely.
+
+## Font Properties
+
+| Property | Value |
+|----------|-------|
+| Font family | Hack Regular |
+| Size | 14 px |
+| Bits per pixel | 4 (16-level anti-aliasing) |
+| Compression | None (`--no-compress`) |
+| Stride alignment | 1 byte |
+| Data alignment | 1 byte |
+| Line height | 19 px |
+| Baseline | 5 px from bottom |
+| Underline position | -2 |
+| Underline thickness | 1 |
+| Unicode range | 0x0000--0xFFFF |
+| Subpixel rendering | None |
+
+## Public Symbol
+
+```c
+const lv_font_t hack_14;
+```
+
+This is the font descriptor exposed for use in LVGL widget styles. Reference it as `&hack_14` when assigning fonts to labels, text areas, or other text-bearing widgets.
+
+## Generation Command
+
+```
+--bpp 4 --size 14 --no-compress --stride 1 --align 1 \
+--font Hack-Regular.ttf --range 0-65535 --format lvgl -o hack_14.c
+```
+
+## Notes
+
+- This is a machine-generated file. Do not edit by hand; regenerate using the LVGL font converter if changes are needed.
+- The full 0--65535 Unicode range makes this a large file. If binary size is a concern, the range could be narrowed to only the code points actually used.
+- The font includes version-conditional compilation guards for compatibility across LVGL 6.x through 9.x, though Asuro targets LVGL 9.2.2.
+- The `LV_ATTRIBUTE_LARGE_CONST` annotation on the glyph bitmap array allows the linker to place it in an appropriate read-only section.