Embed fonts into the executable, ship release artifacts as bare binaries

Fonts are now baked in with #load and loaded via LoadFontFromMemory
instead of LoadFontEx reading assets/*.ttf from disk, so a build no
longer needs an assets/ folder next to it at runtime - the chdir to
the executable's own directory in main.odin is dead code, removed.

just package / just package-windows now produce a single executable
(build/<name>_<version>_<os>_<arch>[.exe]) instead of a tar.gz/zip,
and the release workflow's upload/release-asset globs and the lld/zip
toolchain package list are updated to match.

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

justfile

@@ -36,16 +36,15 @@ test:
     # `ulimit` line wouldn't carry over to the `odin test` line.)
     ulimit -s 8192 && odin test tests -vet -define:ODIN_TEST_THREADS=1 -out:{{build_dir}}/tests
 
-# Optimized native build into build/<os>/, with the assets it needs at runtime
+# Optimized native build into build/<os>/<name> (self-contained: fonts are embedded)
 release:
-    mkdir -p {{build_dir}}/{{os()}}/{{name}}
-    odin build . -vet -o:speed -out:{{build_dir}}/{{os()}}/{{name}}/{{name}}
-    cp -R assets {{build_dir}}/{{os()}}/{{name}}/
+    mkdir -p {{build_dir}}/{{os()}}
+    odin build . -vet -o:speed -out:{{build_dir}}/{{os()}}/{{name}}
 
-# Native release build packed as build/<name>_<version>_<os>_<arch>.tar.gz
+# Native release build as build/<name>_<version>_<os>_<arch>
 package version="dev": release
-    tar -czf {{build_dir}}/{{name}}_{{version}}_{{os()}}_{{arch()}}.tar.gz -C {{build_dir}}/{{os()}} {{name}}
-    @echo "{{build_dir}}/{{name}}_{{version}}_{{os()}}_{{arch()}}.tar.gz"
+    cp {{build_dir}}/{{os()}}/{{name}} {{build_dir}}/{{name}}_{{version}}_{{os()}}_{{arch()}}
+    @echo "{{build_dir}}/{{name}}_{{version}}_{{os()}}_{{arch()}}"
 
 # Download the Windows SDK + CRT (via xwin, accepting Microsoft's license) and raylib.lib. Linux x86_64 only.
 windows-deps:
@@ -67,12 +66,12 @@ windows-deps:
         unzip -o -j {{build_dir}}/odin-windows.zip 'dist/vendor/raylib/windows/raylib.lib' -d "{{raylib_windows}}"
     fi
 
-# Cross-compile a Windows x86_64 build into build/windows/ (run `just windows-deps` first)
+# Cross-compile a self-contained Windows x86_64 build into build/windows/ (run `just windows-deps` first)
 windows:
     #!/usr/bin/env bash
     set -euo pipefail
     obj_dir={{build_dir}}/obj-windows
-    out_dir={{build_dir}}/windows/{{name}}
+    out_dir={{build_dir}}/windows
     mkdir -p "$obj_dir" "$out_dir"
     rm -f "$obj_dir"/*.obj
     odin build . -vet -o:speed -target:windows_amd64 -build-mode:obj -out:"$obj_dir/{{name}}.obj"
@@ -88,12 +87,11 @@ windows:
         libcmt.lib libvcruntime.lib ucrt.lib \
         kernel32.lib user32.lib gdi32.lib winmm.lib shell32.lib opengl32.lib \
         advapi32.lib bcrypt.lib ntdll.lib synchronization.lib ole32.lib
-    cp -R assets "$out_dir/"
 
-# Windows build packed as build/<name>_<version>_windows_x86_64.zip
+# Windows build as build/<name>_<version>_windows_x86_64.exe
 package-windows version="dev": windows
-    cd {{build_dir}}/windows && zip -qr ../{{name}}_{{version}}_windows_x86_64.zip {{name}}
-    @echo "{{build_dir}}/{{name}}_{{version}}_windows_x86_64.zip"
+    cp {{build_dir}}/windows/{{name}}.exe {{build_dir}}/{{name}}_{{version}}_windows_x86_64.exe
+    @echo "{{build_dir}}/{{name}}_{{version}}_windows_x86_64.exe"
 
 # Format all Odin files with odinfmt (settings in odinfmt.json)
 fmt: