stash DMN algorithm plan and connector prompt fix

dmn-algorithm-plan.md: seeds, spreading activation, refractory
suppression, spectral diversity, softmax sampling design.
connector.md: add CONFIDENCE guidance so connector outputs aren't
silently rejected by depth threshold.

prompts/connector.md

@@ -28,6 +28,7 @@ the connection precisely.
 
 ```
 WRITE_NODE key
+CONFIDENCE: high
 [connection content]
 END_NODE
 
@@ -35,6 +36,11 @@ LINK key community_a_node
 LINK key community_b_node
 ```
 
+Rate confidence as **high** when the connection has a specific shared
+mechanism, generates predictions, or identifies a structural isomorphism.
+Use **medium** when the connection is suggestive but untested. Use **low**
+when it's speculative (and expect it won't be stored — that's fine).
+
 ## What makes a connection real vs forced
 
 **Real connections:**