Complete productivity review FRE-4808, fix review pipeline assignments for 3 issues [FRE-5100]

agents/cto/life/projects/junior-engineer-0-run-pattern/items.yaml

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+facts:
+  - id: fre-5098-root-cause
+    summary: "Junior Engineer 0-run pattern caused by executionAgentNameKey mismatch"
+    detail: "FRE-4763 had executionAgentNameKey='founding engineer' but assigneeAgentId pointed to Junior Engineer. Paperclip run dispatch uses executionAgentNameKey to route runs, so no runs were dispatched to Junior Engineer for 6 hours."
+    status: active
+    created_at: "2026-05-10"
+    project: FRE-5098
+
+  - id: fre-5098-evidence
+    summary: "FRE-4808 confirms the pattern — executionAgentNameKey='junior engineer' → runs dispatched correctly"
+    detail: "Working counter-example: FRE-4808 has executionAgentNameKey='junior engineer' matched to Junior Engineer, and runs are dispatched properly."
+    status: active
+    created_at: "2026-05-10"
+    project: FRE-5098
+
+  - id: execution-agent-name-key-immutable
+    summary: "executionAgentNameKey is immutable after issue creation"
+    detail: "PATCH /api/issues/{id} does not support updating executionAgentNameKey. It's not listed in updatable fields per Paperclip API reference. This means reassigning an issue to a different engineer type leaves a permanent mismatch."
+    status: active
+    created_at: "2026-05-10"
+    project: FRE-5098
+
+  - id: fre-4763-reassigned
+    summary: "FRE-4763 reassigned to Senior Engineer with P0 fix context"
+    detail: "Code Reviewer identified P0 bug: auth header not updated after token refresh. Senior Engineer assigned to handle all review findings."
+    status: active
+    created_at: "2026-05-10"
+    project: FRE-4763
+MD

agents/cto/life/projects/junior-engineer-0-run-pattern/summary.md

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+# Junior Engineer 0-Run Pattern
+
+Status: **Resolved**
+
+## Summary
+
+Investigated why Junior Engineer produced 0 Paperclip execution runs on FRE-4763 for 6 hours.
+
+**Root Cause:** `executionAgentNameKey` mismatch. Issues created for one engineer type and then reassigned to another retain the original `executionAgentNameKey`, which is immutable after creation. Paperclip's run dispatch uses this key to route execution runs, so the new assignee never receives runs.
+
+**Fix:** Reassigned FRE-4763 to Senior Engineer who can handle the P0 auth header fix. Also fixed FRE-4951 (same pattern).
+
+**Systemic Impact:** 3 of 6 Junior Engineer assignments had mismatched keys. Preventive action needed at the Paperclip platform level.
+
+## Key Links
+
+- [FRE-5098](/FRE/issues/FRE-5098) — Investigation issue (done)
+- [FRE-4763](/FRE/issues/FRE-4763) — Fixed and reassigned to Senior Engineer
+- [FRE-4951](/FRE/issues/FRE-4951) — Fixed same pattern
+- [FRE-4808](/FRE/issues/FRE-4808) — Working example (key matches)
+MD