--- a/src/activity_core/context_resolvers/frontend_patterns.py
+++ b/src/activity_core/context_resolvers/frontend_patterns.py
@@ -10,6 +10,7 @@
 from datetime import datetime, timezone
 import hashlib
 import json
+import math
 from pathlib import PurePosixPath
 import re
 import time
@@ -149,6 +150,44 @@
     return latest
 
 
+def monthly_review(root_sha: str, now: datetime, start: datetime, end: datetime) -> dict:
+    """Bounded, source-pinned owner snapshot and measured research totals.
+
+    This is review input, never authority or a live health attestation.
+    Missing/invalid input degrades the monthly packet while preserving receipts.
+    """
+    data = json.loads(raw("frontend-patterns", root_sha, "feedback/monthly-review-input.json"))
+    require(data["schema_version"] == 1, "invalid_monthly_input")
+    stamp = datetime.fromisoformat(data["as_of"].replace("Z", "+00:00"))
+    require(stamp.tzinfo is not None and stamp <= now, "invalid_monthly_date")
+    health = data["health"]
+    keys = {"schedule", "collection", "verification", "publication", "rollback", "executor"}
+    require(isinstance(health, dict) and set(health) == keys, "invalid_monthly_health")
+    require(all(isinstance(v, str) and 0 < len(v) <= 80 for v in health.values()), "invalid_monthly_health")
+    require(path_ok(data["evidence_ref"]), "invalid_monthly_evidence")
+    # The cited file must exist at this same source revision.
+    raw("frontend-patterns", root_sha, data["evidence_ref"])
+    decisions = data["decisions"]
+    require(isinstance(decisions, list) and len(decisions) <= 3, "invalid_monthly_decisions")
+    for decision in decisions:
+        require(isinstance(decision, dict) and set(decision) == {"question", "recommendation", "default"}, "invalid_monthly_decision")
+        require(all(isinstance(v, str) and 0 < len(v) <= 100 for v in decision.values()), "invalid_monthly_decision")
+    ledger = json.loads(raw("frontend-patterns", root_sha, "research/evolution/ledger.json"))
+    events = ledger["events"]
+    require(isinstance(events, list) and len(events) <= 1000, "invalid_learning_ledger")
+    selected = [e for e in events if start.date().isoformat() <= e["date"] < end.date().isoformat()]
+    totals = {}
+    for field in ("research_minutes", "execution_minutes", "reported_tokens", "cost_usd"):
+        values = [e["effort"][field] for e in selected]
+        require(all(v is None or (type(v) in (int, float) and math.isfinite(v) and v >= 0) for v in values), "invalid_effort")
+        totals[field] = {"known": round(sum(v for v in values if v is not None), 3), "unknown_cycles": sum(v is None for v in values)}
+    return {"basis": "owner snapshot; not live attestation", "as_of": data["as_of"],
+            "stale": (now - stamp).total_seconds() > 7 * 86400,
+            "health": health, "evidence_ref": data["evidence_ref"], "decisions": decisions,
+            "default": "Retain current policy/budgets; no new authority or maturity claim.",
+            "research_cycles": len(selected), "measured_effort": totals}
+
+
 def collect(mode: str = "daily", now: datetime | None = None) -> dict:
     require(mode in {"daily", "weekly", "monthly"}, "invalid_mode")
     now = now or datetime.now(timezone.utc)
@@ -165,6 +204,7 @@
         "workplan": "FEP-WP-0008", "executor_dependency": "GLAS-WP-0012 / HFACT-WP-0001",
     }
     config = {"sources": []}
+    root_sha = None
     rows = []
     events_seen = set()
     total = 0
@@ -213,6 +253,13 @@
         before = first - timedelta(days=1)
         start = before.replace(day=1)
         report["window"] = {"start": start.isoformat(), "end_exclusive": first.isoformat()}
+        try:
+            require(root_sha is not None, "missing_root_revision")
+            report["review"] = monthly_review(root_sha, now, start, first)
+        except (ValueError, KeyError, TypeError, AttributeError, OverflowError, httpx.HTTPError):
+            report["review"] = {"status": "unavailable", "health": "unknown", "decisions": [],
+                               "default": "Retain current policy/budgets; no new authority or maturity claim."}
+            report["errors"].append("monthly_review_input_invalid_or_unavailable")
         # Select latest event as of the end of the month, not latest today.
         eligible_rows = [(e, d) for e, d in rows if datetime.fromisoformat(e["recorded_at"].replace("Z", "+00:00")) < first]
         latest = reduce_events(eligible_rows, report["errors"])