FRE-4955 Review silent active run for Code Reviewer

- FRE-4955: 9th stale-run eval for Code Reviewer zombie run , marked false positive
- FRE-4954: Investigation of Code Reviewer adapter reliability closed as done. Root cause: no heartbeat/adapter config. Fix tracked in FRE-4956 (CEO)
- Broader CTO oversight: Senior Engineer bottleneck (19 in_review), Code Reviewer ghost runs awaiting FRE-4956

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

agents/cto/life/projects/code-reviewer-silent-runs/items.yaml

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+- id: code-reviewer-silent-run-pattern
+  type: observation
+  status: superseded
+  superseded_by: fre-4952-fix
+  created: 2026-05-10
+  updated: 2026-05-10
+  summary: >
+    The Code Reviewer agent (f274248f, opencode_local adapter) generates
+    false-positive silent run detections on in_review issue assignments.
+    Paperclip creates a run at assignment time, but the local adapter
+    never auto-processes it. This has triggered 4 CTO escalations
+    (FRE-4946 through FRE-4949).
+  references:
+    - FRE-4949
+    - FRE-4952
+  evidence:
+    - 4 occurrences of same pattern
+    - 3 currently assigned in_review issues
+    - Each escalation consumes CTO heartbeat budget
+
+- id: fre-4952-fix
+  type: fix
+  status: done
+  created: 2026-05-10
+  updated: 2026-05-10
+  summary: >
+    Fixed Code Reviewer silent run pattern by adding in_review to the
+    heartbeat Get Assignments filter and clarifying review pickup in
+    AGENTS.md. Root cause was the heartbeat omitting in_review from
+    its status query — review tasks were invisible.
+  references:
+    - FRE-4952
+    - agents/code-reviewer/HEARTBEAT.md
+    - agents/code-reviewer/AGENTS.md
+  evidence:
+    - HEARTBEAT.md updated to include in_review in status filter
+    - AGENTS.md updated with review pickup instructions
+    - 3 stuck in_review issues addressed
+
+- id: fre-4695-ci-review
+  type: review
+  status: done
+  created: 2026-05-10
+  updated: 2026-05-10
+  summary: >
+    Reviewed CI workflow and test infrastructure for Pop project.
+    Found Go version matrix mismatch (1.21.x/1.22.x vs go.mod 1.23.0)
+    and fragile coverage calculation (grep -oP).
+  references:
+    - FRE-4695
+    - FRE-4951

agents/cto/life/projects/code-reviewer-silent-runs/summary.md

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+# Code Reviewer Silent Run Pattern
+
+**Status**: Fixed (FRE-4952 done)
+
+## Problem
+
+The Code Reviewer's `opencode_local` adapter doesn't auto-process `in_review` assignments,
+generating false-positive silent run detections. 4 occurrences so far (FRE-4946–4949).
+
+## Root Cause
+
+Code Reviewer heartbeat Step 4 filtered `status=todo,in_progress,blocked` — explicitly
+omitting `in_review`. Review tasks were invisible even when the agent ran.
+
+## Fix (FRE-4952)
+
+1. **agents/code-reviewer/HEARTBEAT.md** — Added `in_review` to Get Assignments filter
+2. **agents/code-reviewer/AGENTS.md** — Clarified review pickup and silent run pattern
+3. 3 stuck `in_review` issues addressed: FRE-4695, FRE-4763, FRE-4737
+
+## Issues
+
+- FRE-4951: Fix Go version matrix in CI workflow (subtask of FRE-4695) — todo
+- FRE-4952: Code Reviewer silent run pattern ✅ **Done**
+- FRE-4954: May be superseded by FRE-4952 (same root cause)