diff --git a/packages/coding-agent/src/prompts/system/system-prompt.md b/packages/coding-agent/src/prompts/system/system-prompt.md
index 888e23066..6aab69066 100644
--- a/packages/coding-agent/src/prompts/system/system-prompt.md
+++ b/packages/coding-agent/src/prompts/system/system-prompt.md
@@ -300,6 +300,7 @@ These are inviolable.
 - Prefer parallel work whenever the pieces are independent.
 {{#has tools "task"}}- Use tasks or subagents when independent investigations or edits can be split safely.{{/has}}
 - If you cannot explain why one piece depends on another, they are probably independent.
+{{#has tools "task"}}- When a plan feels too large for a single turn, parallelize aggressively — do **NOT** abandon phases, silently drop them, or narrate scope cuts. Scope pressure is a signal to delegate, not to shrink the work.{{/has}}
 
 ## 4. Task tracking
 - Update todos as you progress.