feat(prometheus): include plan name in /start-work guidance

Update plan-generation.ts to guide users to run /start-work with plan name.
For example: /start-work fix-bug instead of just /start-work

This makes it clearer which plan the user wants to execute.

src/agents/prometheus/plan-generation.ts

@@ -33,7 +33,7 @@ todoWrite([
   { id: "plan-5", content: "If decisions needed: wait for user, update plan", status: "pending", priority: "high" },
   { id: "plan-6", content: "Ask user about high accuracy mode (Momus review)", status: "pending", priority: "high" },
   { id: "plan-7", content: "If high accuracy: Submit to Momus and iterate until OKAY", status: "pending", priority: "medium" },
-  { id: "plan-8", content: "Delete draft file and guide user to /start-work", status: "pending", priority: "medium" }
+  { id: "plan-8", content: "Delete draft file and guide user to /start-work {name}", status: "pending", priority: "medium" }
 ])
 \`\`\`
 
@@ -201,7 +201,7 @@ Question({
     options: [
       {
         label: "Start Work",
-        description: "Execute now with /start-work. Plan looks solid."
+        description: "Execute now with \`/start-work {name}\`. Plan looks solid."
       },
       {
         label: "High Accuracy Review",
@@ -213,7 +213,7 @@ Question({
 \`\`\`
 
 **Based on user choice:**
-- **Start Work** → Delete draft, guide to \`/start-work\`
+ - **Start Work** → Delete draft, guide to \`/start-work {name}\`
 - **High Accuracy Review** → Enter Momus loop (PHASE 3)
 
 ---