Reject open Hermes Tweet PR duplicates (#468)

Co-authored-by: kriptoburak <kriptoburak@users.noreply.github.com>

Author: kriptoburak

docs/SUBMISSION_READINESS.md

@@ -898,7 +898,7 @@ Before opening or refreshing a submission:
   submissions or maintainer-curated additions, update the existing issue or
   open a new issue instead of opening a direct PR.
 
-If a target already has a live Hermes Tweet entry, do not open another one.
+If a target already has a live Hermes Tweet entry or the same target already has an open Hermes Tweet PR, do not open another one.
 Refresh only when it fixes a concrete merge blocker, stale target-native
 wording, or broken validation evidence.
 

tests/fixtures/route_rejection_phrases/safety_duplicates.txt

@@ -4,6 +4,7 @@ SDK integrations, creator tools
 avatar or world packages
 generated named-skill listing
 repository-config catalogs with prior closed Hermes Tweet or Xquik route
+same target already has an open Hermes Tweet PR
 same target already has an open TweetClaw or adjacent social-provider PR
 voice assistant, speech, meeting
 real-time communications app