doc: upodated deisgn evolution log

docs/design-evolution-log.md

@@ -2,9 +2,12 @@
 
 A chronological record of why significant design decisions were made. This is NOT a changelog. It records the product's evolution of thinking.
 
+This document records discoveries, not decisions. Every entry represents our best understanding at that point in time and may later be superseded by a better model.
+
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 ## Phase 1
+
 Simple conversational investigation
 
 Question → Answer interaction.
@@ -18,6 +21,7 @@ Conversation alone does not provide sufficient context during longer investigati
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 ## Phase 2
+
 Persistent investigation notebook
 
 Added:
@@ -32,6 +36,7 @@ Users need persistent context rather than remembering previous answers.
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 ## Phase 3
+
 Document workspace
 
 Created a coherent workspace with:
@@ -50,6 +55,7 @@ The interface became usable but still behaved like a document rather than a work
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 ## Phase 4 (Current Exploration)
+
 Facilitated Investigation Workshop
 
 Status:
@@ -90,3 +96,14 @@ The engine facilitates thinking.
 The user contributes evidence.
 
 The workspace captures shared understanding.
+
+## Current Open Questions
+
+The following are active explorations rather than decisions.
+
+- What is the right metaphor for the product?
+- Should the workspace resemble a facilitated workshop?
+- How should decomposition be represented?
+- What information belongs in shared understanding?
+- What should the Investigation Map eventually become?
+- How should wide thinking be reflected in the interface?