doc: added areas of work subpage to development section in book

doc/src/SUMMARY.md

@@ -5,7 +5,8 @@
   - [Ideology](philosophy/ideology.md)
   - [Recommended Books](philosophy/recommended-books.md)
   - [Reading Maths Books](philosophy/reading-maths-books.md)
-- [Development](development.md)
+- [Development](development/development.md)
+  - [Maintenance](development/maintenance.md)
 - [Port ranges](portranges.md)
 - [Architecture](architecture/architecture.md)
   - [Overview](architecture/overview.md)

doc/src/development/maintenance.md

@@ -0,0 +1,29 @@
+# Areas of work
+There are several areas of work that are either undergoing maintenance 
+or need to be maintained:
+
+**Documentation:** general documentation and code docs (cargo doc). this is a very 
+important work for example [overview](https://darkrenaissance.github.io/darkfi/architecture/overview.html) 
+page is out of date.
+
+**Tooling:** Such as the drk tool `camacho` is maintaining. right now 
+we're adding [DAO functionality](https://github.com/darkrenaissance/darkfi/blob/master/src/contract/dao/wallet.sql) 
+to it.
+
+**Tests:** Throughout the project there are either broken or commented out unit tests, they need to be fixed.
+
+**Cleanup:** General code cleanup. `narodnik` begun flattening headers and improving things like in 
+[this commit](https://github.com/darkrenaissance/darkfi/commit/9cd9c3113eed1b5f0bcad2ee449ef926d0908d55).
+
+**ZK Debugger:** The ZKVM needs a debugger so we can interactively inspect values 
+at each step to see where problems go wrong.
+
+**ZK Special Tool:** We need a special tool to run zk contracts, where you can create 
+a json file with the input values and public values, then run the zk 
+contract without having to write any rust code. so you can write .zk 
+files and try them out without having to write rust code. It will tell 
+you the time to create and verify the proof, as well as the byte size of 
+the proof.
+
+**Events System:** We need to fix IRCD, we will need to implement the 
+[events](https://darkrenaissance.github.io/darkfi/misc/event_graph/event_graph.html) system.