diff --git a/CLAUDE.md b/CLAUDE.md
index 9c313e26..66aba352 100644
--- a/CLAUDE.md
+++ b/CLAUDE.md
@@ -28,7 +28,7 @@ Claude-mem integrates with Claude Code through 5 lifecycle hooks:
 1. **SessionStart Hook** (`context-hook`)
    - Injects context from previous sessions
    - Auto-starts PM2 worker service
-   - Retrieves last 3 session summaries
+   - Retrieves last 10 session summaries with three-tier verbosity (v4.2.0)
    - Fixed in v4.1.0 to use proper JSON hookSpecificOutput format
 
 2. **UserPromptSubmit Hook** (`new-hook`)
diff --git a/plugin/scripts/worker-service.cjs b/plugin/scripts/worker-service.cjs
index fc279969..3a91759d 100755
--- a/plugin/scripts/worker-service.cjs
+++ b/plugin/scripts/worker-service.cjs
@@ -406,12 +406,15 @@ Output observations using this XML structure:
 
 \`\`\`xml
 <observation>
-  <type>[ change | discovery | decision ]</type>
+  <type>[ bugfix | feature | refactor | change | discovery | decision ]</type>
   <!--
-    **type**: MUST be EXACTLY one of these 3 options (no other values allowed):
-      - change: modifications to code, config, or documentation
+    **type**: MUST be EXACTLY one of these 6 options (no other values allowed):
+      - bugfix: something was broken, now fixed
+      - feature: new capability or functionality added
+      - refactor: code restructured, behavior unchanged
+      - change: generic modification (docs, config, misc)
       - discovery: learning about existing system
-      - decision: choosing an approach and why it was chosen
+      - decision: architectural/design choice with rationale
   -->
   <title>[**title**: Short title capturing the core action or topic]</title>
   <subtitle>[**subtitle**: One sentence explanation (max 24 words)]</subtitle>
diff --git a/src/sdk/prompts.ts b/src/sdk/prompts.ts
index 9e583d2b..4dd9c168 100644
--- a/src/sdk/prompts.ts
+++ b/src/sdk/prompts.ts
@@ -63,12 +63,15 @@ Output observations using this XML structure:
 
 \`\`\`xml
 <observation>
-  <type>[ change | discovery | decision ]</type>
+  <type>[ bugfix | feature | refactor | change | discovery | decision ]</type>
   <!--
-    **type**: MUST be EXACTLY one of these 3 options (no other values allowed):
-      - change: modifications to code, config, or documentation
+    **type**: MUST be EXACTLY one of these 6 options (no other values allowed):
+      - bugfix: something was broken, now fixed
+      - feature: new capability or functionality added
+      - refactor: code restructured, behavior unchanged
+      - change: generic modification (docs, config, misc)
       - discovery: learning about existing system
-      - decision: choosing an approach and why it was chosen
+      - decision: architectural/design choice with rationale
   -->
   <title>[**title**: Short title capturing the core action or topic]</title>
   <subtitle>[**subtitle**: One sentence explanation (max 24 words)]</subtitle>