Refactor summary prompt for clarity and emphasis on deliverables

- Changed the title of the summary prompt to "THIS REQUEST'S SUMMARY" for better context.
- Revised instructions to focus on summarizing what was built/fixed/deployed/configured, rather than the observation process.
- Clarified when not to summarize, emphasizing conversational requests and trivial inquiries.
- Updated examples to better illustrate good summary practices.

src/sdk/prompts.ts

@@ -156,24 +156,19 @@ export function buildObservationPrompt(obs: Observation): string {
  * Build prompt to generate request summary
  */
 export function buildSummaryPrompt(session: SDKSession): string {
-  return `REQUEST SUMMARY
+  return `THIS REQUEST'S SUMMARY
 ===============
-Review the observations and create a summary of what was BUILT/SHIPPED.
+Think about the observations you just wrote for this request, and write a summary of what was built/fixed/deployed/configured, what was learned, and what's next.
 
-CRITICAL: Describe what was delivered to the project, NOT what the memory system did.
+IMPORTANT! DO NOT summarize the observation process itself - you are summarizing a DIFFERENT claude code session, not this one.
 
 User's Original Request: ${session.user_prompt}
 
 WHEN NOT TO SUMMARIZE
 ----------------------
-Do NOT create a summary if:
-- **Already summarized**: This work was covered in a previous prompt's summary (check if it's just continuation)
-- **Conversational banter**: User is chatting, joking, or making casual comments with no deliverables
-- **Trivial requests**: Simple questions, status checks, or explanations that don't result in shipped work
-- **No meaningful observations**: All observations were skipped or there's nothing substantial to document
-- **Meta-discussions about memory**: Talking about the memory system itself without shipping changes to it
+Do not summarize if the request is conversational and unrelated to the work being done.
 
-If any of these apply, **output only**: <skip_summary reason="[brief reason]" />
+If skipping, **output only**: <skip_summary reason="[brief reason]" />
 
 ✅ GOOD - Describes deliverables:
 <request>Fix authentication timeout bug</request>