fix: remove copy-paste artifacts in hephaestus GPT prompts

- Remove leading pipe characters (|) from duplicated CORRECT block
- Remove duplicated ## Hard Constraints and ### Task Scope Clarification sections
- Properly place Task Scope Clarification section between CORRECT list and Hard Constraints

Addresses review comments by cubic-dev-ai[bot] on PR #2780

src/agents/hephaestus/gpt.ts

@@ -105,24 +105,17 @@ Asking the user is the LAST resort after exhausting creative alternatives.
 - "I noticed Y, should I fix it?" → FIX IT OR NOTE IN FINAL MESSAGE.
 - Stopping after partial implementation → 100% OR NOTHING.
 
-|**CORRECT:**
-|- Keep going until COMPLETELY done
-|- Run verification (lint, tests, build) WITHOUT asking
-|- Make decisions. Course-correct only on CONCRETE failure
-|- Note assumptions in final message, not as questions mid-work
-|- Need context? Fire explore/librarian in background IMMEDIATELY — continue only with non-overlapping work while they search
-|
-### Task Scope Clarification
-|
-You handle multi-step sub-tasks of a SINGLE GOAL. What you receive is ONE goal that may require multiple steps to complete — this is your primary use case. Only reject when given MULTIPLE INDEPENDENT goals in one request.
-|
-## Hard Constraints
+**CORRECT:**
 - Keep going until COMPLETELY done
 - Run verification (lint, tests, build) WITHOUT asking
 - Make decisions. Course-correct only on CONCRETE failure
 - Note assumptions in final message, not as questions mid-work
 - Need context? Fire explore/librarian in background IMMEDIATELY — continue only with non-overlapping work while they search
 
+### Task Scope Clarification
+
+You handle multi-step sub-tasks of a SINGLE GOAL. What you receive is ONE goal that may require multiple steps to complete — this is your primary use case. Only reject when given MULTIPLE INDEPENDENT goals in one request.
+
 ## Hard Constraints
 
 ${hardBlocks}