feat: Phase 7A — semantic memory dedup ("sleep cycle" V1)

New table memory_merge_candidates + service functions to cluster
near-duplicate active memories within (project, memory_type) buckets,
draft a unified content via LLM, and merge on human approval. Source
memories become superseded (never deleted); merged memory carries
union of tags, max of confidence, sum of reference_count.

- schema migration for memory_merge_candidates
- atocore.memory.similarity: cosine + transitive clustering
- atocore.memory._dedup_prompt: stdlib-only LLM prompt preserving every specific
- service: merge_memories / create_merge_candidate / get_merge_candidates / reject_merge_candidate
- scripts/memory_dedup.py: host-side detector (HTTP-only, idempotent)
- 5 API endpoints under /admin/memory/merge-candidates* + /admin/memory/dedup-scan
- triage UI: purple "🔗 Merge Candidates" section + "🔗 Scan for duplicates" bar
- batch-extract.sh Step B3 (0.90 daily, 0.85 Sundays)
- deploy/dalidou/dedup-watcher.sh for UI-triggered scans
- 21 new tests (374 → 395)
- docs/PHASE-7-MEMORY-CONSOLIDATION.md covering 7A-7H roadmap

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

deploy/dalidou/dedup-watcher.sh

@@ -0,0 +1,110 @@
+#!/usr/bin/env bash
+#
+# deploy/dalidou/dedup-watcher.sh
+# -------------------------------
+# Host-side watcher for on-demand memory dedup scans (Phase 7A).
+#
+# The /admin/triage page has a "🔗 Scan for duplicates" button that POSTs
+# to /admin/memory/dedup-scan with {project, similarity_threshold, max_batch}.
+# The container writes this to project_state (atocore/config/dedup_requested_at).
+#
+# This script runs on the Dalidou HOST (where claude CLI lives), polls
+# for the flag, and runs memory_dedup.py when seen.
+#
+# Installed via cron every 2 minutes:
+#   */2 * * * * /srv/storage/atocore/app/deploy/dalidou/dedup-watcher.sh \
+#     >> /home/papa/atocore-logs/dedup-watcher.log 2>&1
+#
+# Mirrors deploy/dalidou/graduation-watcher.sh exactly.
+
+set -euo pipefail
+
+ATOCORE_URL="${ATOCORE_URL:-http://127.0.0.1:8100}"
+APP_DIR="$(cd "$(dirname "${BASH_SOURCE[0]}")/../.." && pwd)"
+LOCK_FILE="/tmp/atocore-dedup.lock"
+LOG_DIR="/home/papa/atocore-logs"
+mkdir -p "$LOG_DIR"
+
+TS="$(date -u +%Y-%m-%dT%H:%M:%SZ)"
+log() { printf '[%s] %s\n' "$TS" "$*"; }
+
+# Fetch the flag via API
+STATE_JSON=$(curl -sSf --max-time 5 "$ATOCORE_URL/project/state/atocore" 2>/dev/null || echo "{}")
+REQUESTED=$(echo "$STATE_JSON" | python3 -c "
+import sys, json
+try:
+    d = json.load(sys.stdin)
+    for e in d.get('entries', d.get('state', [])):
+        if e.get('category') == 'config' and e.get('key') == 'dedup_requested_at':
+            print(e.get('value', ''))
+            break
+except Exception:
+    pass
+" 2>/dev/null || echo "")
+
+if [[ -z "$REQUESTED" ]]; then
+    exit 0
+fi
+
+PROJECT=$(echo "$REQUESTED" | python3 -c "import sys,json; print(json.loads(sys.stdin.read() or '{}').get('project',''))" 2>/dev/null || echo "")
+THRESHOLD=$(echo "$REQUESTED" | python3 -c "import sys,json; print(json.loads(sys.stdin.read() or '{}').get('similarity_threshold',0.88))" 2>/dev/null || echo "0.88")
+MAX_BATCH=$(echo "$REQUESTED" | python3 -c "import sys,json; print(json.loads(sys.stdin.read() or '{}').get('max_batch',50))" 2>/dev/null || echo "50")
+
+# Acquire lock
+exec 9>"$LOCK_FILE" || exit 0
+if ! flock -n 9; then
+    log "dedup already running, skipping"
+    exit 0
+fi
+
+# Mark running
+curl -sSf -X POST "$ATOCORE_URL/project/state" \
+    -H 'Content-Type: application/json' \
+    -d "{\"project\":\"atocore\",\"category\":\"status\",\"key\":\"dedup_running\",\"value\":\"1\",\"source\":\"dedup watcher\"}" \
+    >/dev/null 2>&1 || true
+curl -sSf -X POST "$ATOCORE_URL/project/state" \
+    -H 'Content-Type: application/json' \
+    -d "{\"project\":\"atocore\",\"category\":\"status\",\"key\":\"dedup_last_started_at\",\"value\":\"$TS\",\"source\":\"dedup watcher\"}" \
+    >/dev/null 2>&1 || true
+
+LOG_FILE="$LOG_DIR/dedup-ondemand-$(date -u +%Y%m%d-%H%M%S).log"
+log "Starting dedup (project='$PROJECT' threshold=$THRESHOLD max_batch=$MAX_BATCH, log: $LOG_FILE)"
+
+# Clear the flag BEFORE running so duplicate clicks queue at most one
+curl -sSf -X DELETE "$ATOCORE_URL/project/state" \
+    -H 'Content-Type: application/json' \
+    -d "{\"project\":\"atocore\",\"category\":\"config\",\"key\":\"dedup_requested_at\"}" \
+    >/dev/null 2>&1 || true
+
+cd "$APP_DIR"
+export PYTHONPATH="$APP_DIR/src:${PYTHONPATH:-}"
+ARGS=(--base-url "$ATOCORE_URL" --similarity-threshold "$THRESHOLD" --max-batch "$MAX_BATCH")
+if [[ -n "$PROJECT" ]]; then
+    ARGS+=(--project "$PROJECT")
+fi
+
+if python3 scripts/memory_dedup.py "${ARGS[@]}" >> "$LOG_FILE" 2>&1; then
+    RESULT=$(grep "^summary:" "$LOG_FILE" | tail -1 || tail -1 "$LOG_FILE")
+    RESULT="${RESULT:-completed}"
+    log "dedup finished: $RESULT"
+else
+    RESULT="ERROR — see $LOG_FILE"
+    log "dedup FAILED"
+fi
+
+FINISH_TS="$(date -u +%Y-%m-%dT%H:%M:%SZ)"
+
+curl -sSf -X POST "$ATOCORE_URL/project/state" \
+    -H 'Content-Type: application/json' \
+    -d "{\"project\":\"atocore\",\"category\":\"status\",\"key\":\"dedup_running\",\"value\":\"0\",\"source\":\"dedup watcher\"}" \
+    >/dev/null 2>&1 || true
+curl -sSf -X POST "$ATOCORE_URL/project/state" \
+    -H 'Content-Type: application/json' \
+    -d "{\"project\":\"atocore\",\"category\":\"status\",\"key\":\"dedup_last_finished_at\",\"value\":\"$FINISH_TS\",\"source\":\"dedup watcher\"}" \
+    >/dev/null 2>&1 || true
+
+SAFE_RESULT=$(printf '%s' "$RESULT" | python3 -c "import sys,json; print(json.dumps(sys.stdin.read())[1:-1])")
+curl -sSf -X POST "$ATOCORE_URL/project/state" \
+    -H 'Content-Type: application/json' \
+    -d "{\"project\":\"atocore\",\"category\":\"status\",\"key\":\"dedup_last_result\",\"value\":\"$SAFE_RESULT\",\"source\":\"dedup watcher\"}" \
+    >/dev/null 2>&1 || true