fix(build/apple): stub resman resources + link zlib — U23/U25 for iOS

Mirror of U23 for the iOS/Apple wrapper, plus zlib linkage.

iOS run arthenica#44 (build 26059781838) failed at the wrapper link with the
same 4 ff_graph_* undefined symbols Android hit (U23), plus
inflate/inflateEnd/inflateInit2_ — zlib symbols that resman.c calls
to decompress the embedded gzipped graph.css/graph.html resources.

  U23 (iOS): copy ffmpegkit_resources.c into apple/src/ and add to
    libffmpegkit_la_SOURCES. Same empty-stub strategy as Android.
  U25: add -lz to FFMPEG_FRAMEWORKS in apple/configure.ac so the
    wrapper links against the system zlib. resman.c's inflate calls
    are reachable from the build-time linker even though the empty
    stub data means they're never actually invoked at runtime.

iOS doesn't need binder.c (no CONFIG_MEDIACODEC; iOS uses VideoToolbox).

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

Author: Seifert69

apple/configure.ac

@@ -24,7 +24,7 @@ AM_PROG_AR
 AC_PROG_OBJC
 CFLAGS="$cflags_bckup"
 
-FFMPEG_FRAMEWORKS="-framework libavcodec -framework libavfilter -framework libavformat -framework libavutil -framework libswscale -framework libswresample"
+FFMPEG_FRAMEWORKS="-framework libavcodec -framework libavfilter -framework libavformat -framework libavutil -framework libswscale -framework libswresample -lz"
 AC_SUBST(FFMPEG_FRAMEWORKS)
 
 LT_INIT

apple/src/Makefile.am

@@ -21,6 +21,7 @@ libffmpegkit_la_SOURCES = \
     Statistics.m \
     StreamInformation.m \
     ffmpegkit_exception.m \
+    ffmpegkit_resources.c \
     fftools_cmdutils.c \
     fftools_ffmpeg.c \
     fftools_ffmpeg_dec.c \

apple/src/ffmpegkit_resources.c

@@ -0,0 +1,26 @@
+/*
+ * Homebase ffmpeg-kit — empty resource stubs for n8's fftools/resources/resman.c.
+ *
+ * FFmpeg 8 added an embedded-resources mechanism for ffprobe's mermaid
+ * graph rendering (`-print_graphs`, `-print_graphs_format mermaid`). The
+ * raw `graph.html` and `graph.css` files in `fftools/resources/` get
+ * gzipped and embedded into `ff_graph_html_data` / `ff_graph_css_data`
+ * via FFmpeg's resources Makefile (bin2c-style).
+ *
+ * Our wrapper build uses ndk-build, not FFmpeg's make pipeline, so the
+ * resource .o files aren't produced. resman.c references the externs and
+ * the wrapper link fails.
+ *
+ * chat-kmp never invokes `-print_graphs`, so the resource bytes are
+ * unused at runtime. We define empty stubs so the link succeeds. If a
+ * future consumer needs the mermaid output, replace these with the real
+ * gzipped resource bytes (or bring FFmpeg's resources Makefile pipeline
+ * into the wrapper build).
+ */
+
+#include <stdint.h>
+
+const unsigned char ff_graph_html_data[] = { 0 };
+const unsigned int  ff_graph_html_len    = 0;
+const unsigned char ff_graph_css_data[]  = { 0 };
+const unsigned int  ff_graph_css_len     = 0;