Build the service in a container, and fix what the target compiler found

The openlgtv NDK is a Linux toolchain with no macOS or Windows build, so
tools/build.sh could not produce a binary anywhere else. docker-build.sh
bakes the SDK into an image and compiles there; packaging and deploy stay
on the host, where the TV is reachable. The SDK ships aarch64 as well as
x86_64, so the image picks the one matching the daemon and Apple Silicon
builds natively rather than under emulation.

Cross-compiling for real turned up three things the host compiler did
not:

  sink_hyperhdr_viz.c  read p->width and p->height to format the error
                       message after free(p)
  sink_hyperhdr.c      an SDP connection line of 128 bytes cannot hold
                       "IN IP4 " plus a 127-byte host plus "/255", so a
                       long hostname would silently lose its TTL suffix
  common/log.c         the log body was sized to the whole ring line,
                       leaving nothing for the prefix; budget for it so
                       the bound is provable rather than left to
                       snprintf

A clean cross-compile is now warning-free, and readelf confirms the
design rule holds: luna-service2, glib, PmLogLib and libc, with no
libpulse or libasound.

Also: @webosose/ares-cli was pinned to ^3.0.0, which does not exist
(latest is 2.4.0), so npm install failed outright. build.sh now puts
node_modules/.bin on PATH so a local install is enough.

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

native/src/sinks/sink_hyperhdr_viz.c

@@ -388,9 +388,9 @@ static sink_t* viz_open(const json_value_t* cfg, const audio_format_t* fmt, char
     p->frame_bytes = (size_t)p->width * (size_t)p->height * 3;
     p->frame = calloc(1, p->frame_bytes);
     if (!p->frame) {
+        snprintf(err, errlen, "out of memory allocating %dx%d frame", p->width, p->height);
         free(p);
         free(s);
-        snprintf(err, errlen, "out of memory allocating %dx%d frame", p->width, p->height);
         return NULL;
     }