Update JOJ3 Configuration Schema

JOJ3-Configuration-Schema.md

@@ -22,6 +22,18 @@ Health check configuration:
 **Important:** it should never be possible to disable health check.
 
 
+```toml
+[repo]
+owners = ["mac-wang", "jon-lee", "allen_wr"] # teaching team
+max_size = 5 # repo max size in MB
+
+[files]
+whitelist.patterns = ["*.cpp", "*.c", "*.m", "*.md", "Makefile", "CMakelist.txt", ".gitea"] 
+whitelist.file = "messenger.json" # IMPORTANT: only use if strictly necessary. Almost no course should use it
+immutable.files = [".gitignore", ".gitattributes", ".gitea/workflows/push.yaml"] # readonly files
+immutable.hash = ["fafssafds7","kjklhk5hk345", "nvnfjuysf653214"] # hash of readonly files
+```
+
 ## Task level
 
 Basic idea: 
@@ -36,16 +48,16 @@ Basic idea:
 - test cases can be individually configured if necessary
 
 ```toml
-stages = [ "compile", "code_quality", "joj" ]
+stages = [ "compile", "code_quality", "joj" ] # list of stages, can feature a unique stage
 
 [compile]
-command = "cmake"
-copyfiles= [ "main.c", "task.h" ]
+command = "cmake" 
+copyfiles= [ "main.c", "task.h" ] # files to include with repo code when compiling
 
 [[code_quality]]
-command = "file-length"
-tests = [ "max", "recommend"]
-weights = [ 50, 20 ]
+command = "file-length"  # command to run
+tests = [ "max", "recommend"] # keywords caught by corresponding JOJ plugin
+weights = [ 50, 20 ] # weight of each keyword
 
 [[code_quality]]
 command = "clang-tidy-18 -header-filter=.* -quiet -load=/usr/local/lib/libcodequality.so -p build"
@@ -63,18 +75,18 @@ tests = [ "runtime", "readability", "build" ]
 weights = [ 10, 20, 15]
 
 [joj]
-score = 10
-limit.cpu = 10000000000
-limit.mem = 536870912
+score = 10 # default JOJ score for each test case
+limit.cpu = 10000000000 # default cpu limit for each test case
+limit.mem = 536870912 # default mem limit for each test case
 
 [[test_cases]]
-name = "case4"
-score = 20
+name = "case4" # name of a test case with non-default setup
+score = 20 # non-default score
 limit.cpu = 5000000000
 limit.mem = 53687091
 
 [[test_cases]]
 name = "case10"
 score = 30
-limit.mem = 53687091
+limit.mem = 53687091 # limit.cpu is kept as default
 ```