Baseline: Ludic compiler + toolchain, Phase 1 syntax fixes complete

Self-hosted compiler (selfhost/*.ludic), runtime, examples, editor tooling,
and docs. Phase 1 of the syntax-redesign cohesion pass has landed:
edge-system fix, signature-query, when-alias, and the documentation truth-pass.
Suite green (14/14), C-free bootstrap fixpoint holds.

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>

build-cli.sh

@@ -0,0 +1,26 @@
+#!/bin/bash
+# build-cli.sh — build the self-hosted Ludic front-end binaries.
+#
+# Both `ludicc` and `ludic` are the SAME native binary, compiled from the Ludic
+# compiler's own IR seed (selfhost/ludicc.seed.ll) with clang alone — no C
+# compiler. The binary is multi-call: it looks at argv[0], so invoked as
+# `ludicc` it compiles, and invoked as `ludic` it compiles and runs.
+#
+#   ./build-cli.sh
+#   ./ludicc examples/snake.ludic -o build/snake     # compile
+#   ./ludic  examples/snake.ludic                     # compile + play
+#
+# The binaries locate the runtime (runtime/native/cocoa.ll) via $LUDIC_HOME,
+# defaulting to the directory they sit in — so keep them at the repo root, or
+# set LUDIC_HOME and put them on your PATH.
+set -eu
+cd "$(dirname "$0")"
+CC="${LUDIC_CC:-clang}"
+mkdir -p build
+
+echo "cc: selfhost/ludicc.seed.ll -> ludicc/ludic  (from the IR seed, no C compiler)"
+$CC selfhost/ludicc.seed.ll -o build/ludicc
+cp build/ludicc ludicc
+cp build/ludicc ludic
+chmod +x ludicc ludic
+echo "done. built ./ludicc and ./ludic"