diff --git a/lifelog-recorder/scripts/reprocess-history.sh b/lifelog-recorder/scripts/reprocess-history.sh
new file mode 100755
index 0000000..b651ede
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+++ b/lifelog-recorder/scripts/reprocess-history.sh
@@ -0,0 +1,104 @@
+#!/usr/bin/env bash
+# 一次性：把所有旧的逐句 .opus 重新合并成「块」，清空旧识别(segments/transcripts/
+# speaker_profiles)，让设备上 RecorderService 用**本地模型**(pyannote+paraformer+campplus)
+# 按新 block 管线整体重跑声纹+文字。
+#
+# 本脚本只做机械活：解码+重打包成 blocks/<ts>/{audio.pcm,manifest.json} + 清 DB。
+# 真正的识别 100% 在 Pixel 端上模型跑，不用任何云/Claude。
+#
+# 用法： bash reprocess-history.sh
+# 跑完后：打开 app → 录音 → 开始录音，RecorderService 会自动处理所有块。
+set -euo pipefail
+
+PKG=com.lemon.lifelog
+DBR=/data/data/$PKG/databases/lifelog.db
+SEGR=/data/data/$PKG/files/segments
+BLKR=/data/data/$PKG/files/blocks
+GAP_MS=$((5*60*1000))    # 静音≥5min 切块
+CAP_MS=$((10*60*1000))   # 块≥10min 封顶(控内存/单次 diarize 时长)
+SR=16000
+
+WORK=$(mktemp -d /tmp/reprocess.XXXXXX)
+echo "工作目录: $WORK"
+
+echo "[1/8] 停 app"
+adb shell am force-stop $PKG
+
+echo "[2/8] 备份 + 拉 DB"
+TS=$(date +%Y%m%d-%H%M%S)
+adb shell "su -c 'cp $DBR /sdcard/_bk.db'"; adb pull /sdcard/_bk.db "$WORK/backup-$TS.db" >/dev/null; adb shell "su -c 'rm /sdcard/_bk.db'"
+adb shell "su -c 'cp ${DBR}* /sdcard/ 2>/dev/null'"
+for f in lifelog.db lifelog.db-wal lifelog.db-shm; do adb pull /sdcard/$f "$WORK/$f" >/dev/null 2>&1 || true; done
+adb shell "su -c 'rm /sdcard/lifelog.db* 2>/dev/null'"
+sqlite3 "$WORK/lifelog.db" "PRAGMA wal_checkpoint(TRUNCATE);" >/dev/null 2>&1 || true
+echo "  备份: $WORK/backup-$TS.db"
+
+echo "[3/8] 拉所有 .opus"
+adb shell "su -c 'rm -rf /sdcard/_seg && cp -r $SEGR /sdcard/_seg'"
+adb pull /sdcard/_seg "$WORK/segments" >/dev/null 2>&1
+adb shell "su -c 'rm -rf /sdcard/_seg'"
+
+echo "[4/8] 分块 + 解码重打包(ffmpeg)"
+python3 - "$WORK/lifelog.db" "$WORK/segments" "$WORK/blocks" "$GAP_MS" "$CAP_MS" "$SR" <<'PY'
+import sqlite3, subprocess, os, json, sys
+db, segdir, outdir, GAP, CAP, SR = sys.argv[1], sys.argv[2], sys.argv[3], int(sys.argv[4]), int(sys.argv[5]), int(sys.argv[6])
+con = sqlite3.connect(db)
+rows = con.execute("SELECT id,startTs,durationMs,audioPath FROM segments ORDER BY startTs").fetchall()
+# 按静音间隔 + 时长封顶分块
+blocks, cur = [], []
+for r in rows:
+    if cur:
+        prev = cur[-1]
+        prev_end = prev[1] + prev[2]
+        span = r[1] - cur[0][1]
+        if (r[1] - prev_end) >= GAP or span >= CAP:
+            blocks.append(cur); cur = []
+    cur.append(r)
+if cur: blocks.append(cur)
+
+os.makedirs(outdir, exist_ok=True)
+made = 0
+for b in blocks:
+    start = b[0][1]
+    bdir = os.path.join(outdir, str(start)); os.makedirs(bdir, exist_ok=True)
+    pcm = bytearray(); runs = []; off = 0
+    for seg in b:
+        rel = seg[3].split('/files/segments/')[-1]
+        local = os.path.join(segdir, rel)
+        if not os.path.exists(local):
+            continue
+        raw = subprocess.run(["ffmpeg","-v","quiet","-i",local,"-ar",str(SR),"-ac","1","-f","s16le","-"],
+                             capture_output=True).stdout
+        n = len(raw)//2
+        if n == 0:
+            continue
+        runs.append({"ts": seg[1], "off": off, "len": n}); off += n; pcm += raw
+    if off == 0:
+        os.rmdir(bdir); continue
+    open(os.path.join(bdir, "audio.pcm"), "wb").write(pcm)
+    json.dump({"start": start, "sr": SR, "closed": True, "runs": runs}, open(os.path.join(bdir, "manifest.json"), "w"))
+    made += 1
+    print(f"  block {start}: {len(b)} segs -> {off/SR:.0f}s speech")
+print(f"  => {made} blocks from {len(rows)} segments")
+PY
+
+echo "[5/8] 清空旧识别(segments/transcripts/speaker_profiles)"
+sqlite3 "$WORK/lifelog.db" "DELETE FROM transcripts; DELETE FROM segments; DELETE FROM speaker_profiles; PRAGMA wal_checkpoint(TRUNCATE); VACUUM;"
+sqlite3 "$WORK/lifelog.db" "PRAGMA integrity_check;" | head -1
+
+echo "[6/8] 推块到设备 + 清旧 .opus + 清旧 blocks"
+APP_UID=$(adb shell "su -c 'stat -c %u /data/data/$PKG'" | tr -d '\r')
+echo "  app uid=$APP_UID"
+adb shell "su -c 'rm -rf $BLKR; mkdir -p $BLKR'"
+adb shell "su -c 'rm -rf $SEGR'"   # 旧逐句 .opus 全删(内容已并进块)；RecorderService 会重建并写新块 .opus
+adb push "$WORK/blocks" /sdcard/_blk >/dev/null
+adb shell "su -c 'cp -r /sdcard/_blk/* $BLKR/ && chown -R $APP_UID:$APP_UID $BLKR && chcon -R u:object_r:app_data_file:s0 $BLKR; rm -rf /sdcard/_blk'"
+echo "  pushed $(adb shell "su -c 'ls $BLKR | wc -l'" | tr -d '\r') blocks"
+
+echo "[7/8] 推回清空后的 DB"
+adb push "$WORK/lifelog.db" /sdcard/_db >/dev/null
+adb shell "su -c 'cp /sdcard/_db $DBR && rm -f ${DBR}-wal ${DBR}-shm && chown $APP_UID:$APP_UID $DBR && chcon u:object_r:app_data_file:s0 $DBR; rm -f /sdcard/_db'"
+
+echo "[8/8] 完成。现在打开 app → 录音 → 开始录音，端上本地模型会自动重跑所有块。"
+echo "      监控： adb logcat -s BlockProcessor:I SpeakerClusterer:I"
+echo "      备份在： $WORK/backup-$TS.db"