memory bank: clarify per-component docs

Author: geropl

.clinerules/memory-bank.md

@@ -56,8 +56,11 @@ flowchart TD
    - Current status
    - Known issues
 
-### Per-component documentation
-The `memory-bank/components` directory contains detailed documentation about each component in this project. With regards to maintaining and updating it, treat it just like any other part of the memory-bank.
+### Per-component documentation (optional, decide per on per-task basis)
+- The `memory-bank/components` directory contains detailed documentation about each component in this project.
+- Read those when working on them.
+- Use list all files and directories in `memory-bank/components/` for a list of all available documentation.
+- With regards to maintaining and updating it, treat it just like any other part of the memory-bank.
 
 ### Additional Context
 Create additional files/folders within memory-bank/ when they help organize: