Initial commit: Odin editor client + Kotlin daemon prototype

Native SDL3 editor written in Odin with a piece-table buffer core,
backed by a Kotlin/JVM daemon speaking newline-delimited JSON over
localhost TCP for Gradle import, Kotlin/Java diagnostics, and
heuristic completion/hover/definition/references/rename.

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>

scripts/compile-shaders.sh

@@ -0,0 +1,20 @@
+#!/usr/bin/env bash
+set -euo pipefail
+
+ROOT="$(cd "$(dirname "${BASH_SOURCE[0]}")/.." && pwd)"
+SRC="$ROOT/client/odin/shaders"
+OUT="$SRC/compiled"
+
+if ! command -v glslc >/dev/null 2>&1; then
+  printf 'error: glslc not found. Install shaderc/glslc. On Fedora: sudo dnf install glslc\n' >&2
+  exit 1
+fi
+
+mkdir -p "$OUT"
+
+glslc -fshader-stage=vert "$SRC/rect.vert.glsl" -o "$OUT/rect.vert.spv"
+glslc -fshader-stage=frag "$SRC/rect.frag.glsl" -o "$OUT/rect.frag.spv"
+glslc -fshader-stage=vert "$SRC/text.vert.glsl" -o "$OUT/text.vert.spv"
+glslc -fshader-stage=frag "$SRC/text.frag.glsl" -o "$OUT/text.frag.spv"
+
+printf 'compiled SDL3 GPU shaders to %s\n' "$OUT"