Wire up editor: input bindings, frame hooks, launcher script

init.lua loads the work map, binds hotkeys (E/R/S/Esc), tracks
mouse-cell per frame, dispatches clicks to the UI hit-tester
and falls through to paint-cell for unconsumed map-area clicks.
run-map-editor.sh handles copy-in/copy-out for a real target map
or runs in-place against the module's work slot.

scripts/run-map-editor.sh

@@ -0,0 +1,51 @@
+#!/usr/bin/env bash
+# run-map-editor.sh — launcher for sporel-module-map-editor
+# Usage: bash scripts/run-map-editor.sh [target_map.json]
+#
+# If a target is given, copy it into the editor's work-slot before
+# launching, then copy the edited result back to the target after exit.
+# Without a target, edits the in-place work.map.json.
+
+set -e
+
+SCRIPT_DIR="$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)"
+EDITOR_DIR="$(cd "$SCRIPT_DIR/.." && pwd)"
+WORK_SLOT="$EDITOR_DIR/maps/work.map.json"
+SPOREL_ROOT="$(cd "$EDITOR_DIR/../.." && pwd)"
+SPOREL_BIN="${SPOREL_BIN:-$SPOREL_ROOT/sporel-engine/build/Sporel.exe}"
+
+if [ ! -x "$SPOREL_BIN" ]; then
+    echo "error: Sporel binary not found at $SPOREL_BIN" >&2
+    echo "set SPOREL_BIN env-var or build the engine first" >&2
+    exit 1
+fi
+
+TARGET="${1:-}"
+if [ -n "$TARGET" ]; then
+    if [ ! -f "$TARGET" ]; then
+        echo "error: target map not found: $TARGET" >&2
+        exit 1
+    fi
+    echo "copying $TARGET -> $WORK_SLOT"
+    cp "$TARGET" "$WORK_SLOT"
+fi
+
+echo "launching map-editor on $WORK_SLOT"
+
+export SPOREL_LIBS_DIR="$SPOREL_ROOT/sporel-libs"
+export SPOREL_MODULES_DIR="$SPOREL_ROOT/sporel-modules"
+export SPOREL_MODULE=map-editor
+
+LOG_FILE="${SPOREL_LOG:-/tmp/sporel-last-run.log}"
+set +e
+"$SPOREL_BIN" "$@" 2> >(tee "$LOG_FILE" >&2)
+rc=$?
+set -e
+
+if [ -n "$TARGET" ] && [ $rc -eq 0 ]; then
+    echo "copying $WORK_SLOT -> $TARGET"
+    cp "$WORK_SLOT" "$TARGET"
+fi
+
+echo "done (exit $rc)"
+exit $rc