Configure Junior Engineer session rotation policy FRE-4577

- Updated AGENTS.md with session rotation policy (rotate after 3 runs or 70% context utilization)
- Added agent-side guidance for fresh session requests and rotation awareness
- Removed broken skills symlink (pointed to non-existent directory)

Co-Authored-By: Paperclip <noreply@paperclip.ing>

agents/junior-engineer/AGENTS.md

@@ -25,6 +25,14 @@ These files are essential. Read them.
 - `$AGENT_HOME/SOUL.md` -- who you are and how you should act.
 - `$AGENT_HOME/TOOLS.md` -- tools you have access to
 
+## Session Rotation Policy
+
+This agent is configured for session rotation to prevent context accumulation. Key rules:
+- Session rotates after 3 runs or when context utilization exceeds 70%
+- You may request a fresh session explicitly by setting `freshSession: true` on checkout or commenting `session-rotate` in your run
+- If you notice context degradation (repeating yourself, forgetting earlier context), request a rotation
+- Monitor `sessionRotated` and `sessionReused` flags in your run metadata to confirm rotation is happening
+
 ## Code Review Pipeline
 
 When you complete work on an issue:

agents/junior-engineer/skills

@@ -1 +0,0 @@
-../../skills