fix: move notifications to bottom right

fix: sync update status after checks
fix: reconcile stale staged updates
2026-09-05 17:06:23 +08:00 · 2026-09-05 16:41:18 +08:00 · 2026-09-05 16:31:53 +08:00 · 2026-09-05 16:26:34 +08:00 · 2026-09-05 14:56:15 +08:00 · 2026-09-05 10:31:29 +08:00
16 changed files with 739 additions and 638 deletions
@@ -31,6 +31,8 @@ TALLYNOTE_INSTALL_PREFIX=./
 TALLYNOTE_UPDATE_METADATA_URL=https://git.awaioi.com/api/v1/repos/awaioi/TallyNote/releases/latest
 TALLYNOTE_UPDATE_ALLOWED_HOSTS=git.awaioi.com
 TALLYNOTE_UPDATE_MAX_MB=512
+# Per-request timeout for update metadata, checksums, signatures, and archives.
+TALLYNOTE_UPDATE_TIMEOUT_SECONDS=30
 # SHA-256 is always required. Detached Ed25519 signatures are optional; set
 # this to true only when a root-managed public key is configured below.
 TALLYNOTE_UPDATE_REQUIRE_SIGNATURE=false
@@ -1,6 +1,6 @@
 {
  "name": "tallynote",
-  "version": "1.2.2",
+  "version": "1.2.8",
  "private": true,
  "type": "module",
  "packageManager": "pnpm@9.0.6",
@@ -10,6 +10,8 @@ DATA_DIR=${TALLYNOTE_DATA_DIR:-/var/lib/tallynote}
 REQUEST_FILE="$DATA_DIR/update-request.json"
 CURRENT_LINK="$PREFIX/current"
 STATE_FILE="$PREFIX/.update-state"
+LOCK_FILE="$PREFIX/.update-runner.lock"
+RUNNER_LOG="$PREFIX/.update-runner.log"
 SERVICE_NAME=${TALLYNOTE_SERVICE_NAME:-tallynote.service}
 HOST=${TALLYNOTE_HOST:-127.0.0.1}
 PORT=${TALLYNOTE_PORT:-3000}
@@ -19,13 +21,72 @@ if [[ "$HEALTH_HOST" == :: ]]; then HEALTH_HOST=::1; fi
 if [[ "$HEALTH_HOST" == *:* && "$HEALTH_HOST" != \[* ]]; then HEALTH_HOST="[$HEALTH_HOST]"; fi

 die() { printf 'tallynote update runner: %s\n' "$*" >&2; exit 1; }
+
+# The runner may exit during any of the checks below. Install its EXIT cleanup
+# before doing privileged preflight so a partial invocation never leaves a
+# heartbeat or lock behind.
+STATE_CREATED=0
+heartbeat_pid=''
+heartbeat_owner=$$
+RUNNER_LOCK_FD=9
+RUNNER_LOCK_MODE=''
+stop_heartbeat() {
+  if [[ -n "$heartbeat_pid" ]]; then
+    kill "$heartbeat_pid" 2>/dev/null || true
+    wait "$heartbeat_pid" 2>/dev/null || true
+    heartbeat_pid=''
+  fi
+}
+# shellcheck disable=SC2329 # invoked indirectly by the EXIT trap
+release_runner_lock() {
+  if [[ "$RUNNER_LOCK_MODE" == flock ]]; then
+    flock -u "$RUNNER_LOCK_FD" 2>/dev/null || true
+    eval "exec ${RUNNER_LOCK_FD}>&-" 2>/dev/null || true
+  elif [[ "$RUNNER_LOCK_MODE" == mkdir ]]; then
+    rmdir -- "$LOCK_FILE.d" 2>/dev/null || true
+  fi
+}
+# shellcheck disable=SC2329 # invoked indirectly by the EXIT trap
+early_cleanup() {
+  local result=$?
+  stop_heartbeat
+  if (( result != 0 )); then
+    # A preflight failure happens before the normal phase-specific trap is
+    # installed. Remove only the one-shot request marker; never remove an
+    # existing recovery marker unless this invocation created it.
+    rm -f -- "$REQUEST_FILE" 2>/dev/null || true
+    if (( STATE_CREATED == 1 )); then rm -f -- "$STATE_FILE" 2>/dev/null || true; fi
+  fi
+  release_runner_lock
+  return "$result"
+}
+trap early_cleanup EXIT
+
 [[ ${EUID:-$(id -u)} -eq 0 ]] || die 'must run as root'
+[[ -d "$PREFIX" ]] || die 'install prefix is missing'
+if command -v flock >/dev/null 2>&1; then
+  exec 9>"$LOCK_FILE" || die '无法打开更新运行锁'
+  flock -n "$RUNNER_LOCK_FD" || exit 0
+  RUNNER_LOCK_MODE=flock
+else
+  # macOS development fixtures do not ship util-linux; retain an atomic lock
+  # fallback there while Linux production uses flock above.
+  mkdir "$LOCK_FILE.d" 2>/dev/null || exit 0
+  RUNNER_LOCK_MODE='mkdir'
+fi
 [[ -f "$REQUEST_FILE" || -f "$STATE_FILE" ]] || exit 0
 [[ -L "$CURRENT_LINK" ]] || die 'current release link is missing'

 old_target=$(readlink -f -- "$CURRENT_LINK")
 [[ "$old_target" == "$PREFIX/releases/"* && -d "$old_target" ]] || die 'current release target is invalid'

+# Capture the service state before any download/apply work. The value is
+# persisted in the recovery marker so a later runner process can restore the
+# operator's original state after a crash (the service is normally inactive by
+# the time recovery starts).
+was_active=0
+if systemctl is-active --quiet "$SERVICE_NAME"; then was_active=1; fi
+
 request_operation='apply'
 if [[ -f "$REQUEST_FILE" && ! -L "$REQUEST_FILE" ]]; then
  request_operation=$(sed -n 's/.*"operation"[[:space:]]*:[[:space:]]*"\(download\|apply\)".*/\1/p' "$REQUEST_FILE" | head -n 1)
@@ -39,15 +100,11 @@ job_id=''
 if [[ -f "$REQUEST_FILE" && ! -L "$REQUEST_FILE" ]]; then
  job_id=$(sed -n 's/.*"jobId"[[:space:]]*:[[:space:]]*"\([0-9a-f-]*\)".*/\1/p' "$REQUEST_FILE" | head -n 1)
 fi
-STATE_CREATED=0
-heartbeat_pid=''
-heartbeat_owner=$$
-
 write_recovery_state() {
  local phase=$1 temporary
  temporary="$PREFIX/.update-state-$$-${RANDOM}.tmp"
  [[ ! -e "$temporary" && ! -L "$temporary" ]] || return 1
-  printf 'job_id=%s\nold_target=%s\nphase=%s\n' "$job_id" "$old_target" "$phase" > "$temporary"
+  printf 'job_id=%s\nold_target=%s\nphase=%s\ninitial_active=%s\n' "$job_id" "$old_target" "$phase" "$was_active" > "$temporary"
  chmod 600 "$temporary"
  mv -Tf -- "$temporary" "$STATE_FILE"
  STATE_CREATED=1
@@ -59,14 +116,6 @@ clear_recovery_state() {
  STATE_CREATED=0
 }

-stop_heartbeat() {
-  if [[ -n "$heartbeat_pid" ]]; then
-    kill "$heartbeat_pid" 2>/dev/null || true
-    wait "$heartbeat_pid" 2>/dev/null || true
-    heartbeat_pid=''
-  fi
-}
-
 heartbeat() {
  # Keep the lease fresh during long downloads/backups, but stop on a hard
  # runner kill so an orphaned child cannot keep the recovery marker alive.
@@ -86,9 +135,11 @@ start_heartbeat() {
 # This trap covers failures before the normal apply cleanup trap is installed,
 # including a missing runtime, an invalid current link, and a failed service
 # stop. It deliberately does not remove a pre-existing recovery marker.
+# shellcheck disable=SC2329 # invoked indirectly by the EXIT trap
 preflight_cleanup() {
  local result=$?
  stop_heartbeat
+  release_runner_lock
  if (( result != 0 )); then
    rm -f -- "$REQUEST_FILE" 2>/dev/null || true
    if (( STATE_CREATED == 1 )); then clear_recovery_state || true; fi
@@ -97,6 +148,33 @@ preflight_cleanup() {
 }
 trap preflight_cleanup EXIT

+DOWNLOAD_TIMEOUT_SECONDS=${TALLYNOTE_UPDATE_DOWNLOAD_TIMEOUT_SECONDS:-${TALLYNOTE_UPDATE_RUNNER_DOWNLOAD_TIMEOUT_SECONDS:-1800}}
+APPLY_TIMEOUT_SECONDS=${TALLYNOTE_UPDATE_APPLY_TIMEOUT_SECONDS:-${TALLYNOTE_UPDATE_RUNNER_APPLY_TIMEOUT_SECONDS:-1800}}
+FINALIZE_TIMEOUT_SECONDS=${TALLYNOTE_UPDATE_FINALIZE_TIMEOUT_SECONDS:-${TALLYNOTE_UPDATE_RUNNER_FINALIZE_TIMEOUT_SECONDS:-30}}
+TIMEOUT_BIN=$(command -v timeout || true)
+
+run_update_cli() {
+  local node=$1 timeout_seconds=$2 label=$3 result
+  shift 3
+  [[ "$timeout_seconds" =~ ^[1-9][0-9]*$ ]] || die "${label} timeout must be a positive integer"
+  {
+    printf '\n[%s] %s (timeout=%ss)\ncommand:' "$(date -u '+%Y-%m-%dT%H:%M:%SZ')" "$label" "$timeout_seconds"
+    printf ' %q' "$node" "$CURRENT_LINK/dist/server/cli/update.js" "$@"
+    printf '\n'
+  } >>"$RUNNER_LOG"
+  if [[ -n "$TIMEOUT_BIN" ]]; then
+    "$TIMEOUT_BIN" --foreground --signal=TERM --kill-after=10s "${timeout_seconds}s" \
+      "$node" "$CURRENT_LINK/dist/server/cli/update.js" "$@" >>"$RUNNER_LOG" 2>&1
+    result=$?
+  elif "$node" "$CURRENT_LINK/dist/server/cli/update.js" "$@" >>"$RUNNER_LOG" 2>&1; then
+    result=0
+  else
+    result=$?
+  fi
+  printf '[%s] %s exited with status %s\n' "$(date -u '+%Y-%m-%dT%H:%M:%SZ')" "$label" "$result" >>"$RUNNER_LOG"
+  return "$result"
+}
+
 # Downloading is intentionally handled while the main service remains up.
 # The CLI persists the validated payload under the root-owned workspace and
 # leaves the job staged for a later apply request.
@@ -107,6 +185,7 @@ if [[ "$request_operation" == download ]]; then
    clear_recovery_state || die '无法清理上一次下载状态'
  fi
  write_recovery_state download || die '无法写入更新恢复状态'
+# shellcheck disable=SC2329 # invoked indirectly by the EXIT trap
  cleanup_download() {
    local result=$?
    stop_heartbeat
@@ -116,6 +195,7 @@ if [[ "$request_operation" == download ]]; then
      rm -f -- "$REQUEST_FILE" 2>/dev/null || true
    fi
    clear_recovery_state || true
+    release_runner_lock
    return "$result"
  }
  trap cleanup_download EXIT
@@ -128,7 +208,7 @@ if [[ "$request_operation" == download ]]; then
  cli="$CURRENT_LINK/dist/server/cli/update.js"
  [[ -f "$cli" ]] || die 'update CLI not found in current release'
  set +e
-  "$node_bin" "$cli" --request-file "$REQUEST_FILE"
+  run_update_cli "$node_bin" "$DOWNLOAD_TIMEOUT_SECONDS" download --request-file "$REQUEST_FILE"
  download_result=$?
  set -e
  if (( download_result != 0 )); then
@@ -139,7 +219,7 @@ if [[ "$request_operation" == download ]]; then
    download_job_id=$(sed -n 's/.*"jobId"[[:space:]]*:[[:space:]]*"\([0-9a-f-]*\)".*/\1/p' "$REQUEST_FILE" | head -n 1)
    if [[ "$download_job_id" =~ ^[0-9a-f-]{36}$ ]]; then
      for _ in 1 2 3; do
-        if "$node_bin" "$cli" --finalize-job "$download_job_id" --finalize-status failed --message '更新下载失败' >/dev/null 2>&1; then break; fi
+        if run_update_cli "$node_bin" "$FINALIZE_TIMEOUT_SECONDS" finalize-download --finalize-job "$download_job_id" --finalize-status failed --message '更新下载失败'; then break; fi
        sleep 1
      done
    fi
@@ -150,12 +230,11 @@ if [[ "$request_operation" == download ]]; then
  exit 0
 fi

-was_active=0
-if systemctl is-active --quiet "$SERVICE_NAME"; then was_active=1; fi
 # shellcheck disable=SC2329 # invoked indirectly by the EXIT trap below
 restore_initial_service() {
  local result=$?
  stop_heartbeat
+  release_runner_lock
  if (( result != 0 )); then
    rm -f -- "$REQUEST_FILE" 2>/dev/null || true
    if (( STATE_CREATED == 1 )); then clear_recovery_state || true; fi
@@ -175,11 +254,11 @@ finalize_state_job() {
  local node=$1 status=$2 state_job=$3
  [[ "$state_job" =~ ^[0-9a-f-]{36}$ && -n "$node" ]] || return 1
  [[ -f "$CURRENT_LINK/dist/server/cli/update.js" ]] || return 1
-  "$node" "$CURRENT_LINK/dist/server/cli/update.js" --finalize-job "$state_job" --finalize-status "$status" --message '新版本健康检查失败，已恢复上一版本' >/dev/null 2>&1
+  run_update_cli "$node" "$FINALIZE_TIMEOUT_SECONDS" finalize-recovery --finalize-job "$state_job" --finalize-status "$status" --message '新版本健康检查失败，已恢复上一版本'
 }

 recover_stale_state() {
-  local state_job state_old state_phase current_target recovery_node rollback_link state_mode state_uid
+  local state_job state_old state_phase state_initial_active current_target recovery_node rollback_link state_mode state_uid
  [[ -f "$STATE_FILE" && ! -L "$STATE_FILE" ]] || die 'update state file is invalid'
  state_uid=$(stat -c '%u' "$STATE_FILE" 2>/dev/null || stat -f '%u' "$STATE_FILE")
  state_mode=$(stat -c '%a' "$STATE_FILE" 2>/dev/null || stat -f '%Lp' "$STATE_FILE")
@@ -187,8 +266,16 @@ recover_stale_state() {
  state_job=$(sed -n 's/^job_id=//p' "$STATE_FILE" | head -n 1)
  state_old=$(sed -n 's/^old_target=//p' "$STATE_FILE" | head -n 1)
  state_phase=$(sed -n 's/^phase=//p' "$STATE_FILE" | head -n 1)
+  state_initial_active=$(sed -n 's/^initial_active=//p' "$STATE_FILE" | head -n 1)
  [[ "$state_job" =~ ^[0-9a-f-]{36}$ ]] || die 'update state job id is invalid'
  [[ "$state_old" == "$PREFIX/releases/"* && -d "$state_old" && ! -L "$state_old" ]] || die 'update state target is invalid'
+  if [[ -z "$state_initial_active" ]]; then
+    # Markers from older releases did not persist this field. Preserve their
+    # historical conservative behavior instead of rejecting recovery.
+    state_initial_active=0
+  fi
+  [[ "$state_initial_active" == 0 || "$state_initial_active" == 1 ]] || die 'update state initial service state is invalid'
+  was_active=$state_initial_active
  current_target=$(readlink -f -- "$CURRENT_LINK" 2>/dev/null || true)
  if [[ "$state_phase" == download && "$current_target" == "$state_old" ]]; then
    # Downloading never changes the active release. If the runner was killed
@@ -312,7 +399,7 @@ finalize_failed_job() {
  # Give SQLite a moment to release a transient lock before declaring the
  # recovery itself failed.
  for _ in 1 2 3; do
-    if "$old_node" "$CURRENT_LINK/dist/server/cli/update.js" --finalize-job "$job_id" --finalize-status failed --message '新版本健康检查失败，已恢复上一版本' >/dev/null 2>&1; then
+    if run_update_cli "$old_node" "$FINALIZE_TIMEOUT_SECONDS" finalize-failed --finalize-job "$job_id" --finalize-status failed --message '新版本健康检查失败，已恢复上一版本'; then
      return 0
    fi
    sleep 1
@@ -323,7 +410,7 @@ finalize_failed_job() {
 finalize_completed_job() {
  [[ "$job_id" =~ ^[0-9a-f-]{36}$ ]] || return 0
  [[ -n "$final_node" ]] || return 1
-  "$final_node" "$CURRENT_LINK/dist/server/cli/update.js" --finalize-job "$job_id" --finalize-status completed >/dev/null 2>&1
+  run_update_cli "$final_node" "$FINALIZE_TIMEOUT_SECONDS" finalize-completed --finalize-job "$job_id" --finalize-status completed
 }

 # shellcheck disable=SC2329 # invoked indirectly by the EXIT trap below
@@ -347,6 +434,7 @@ cleanup_after_update() {
  else
    systemctl stop "$SERVICE_NAME" || true
  fi
+  release_runner_lock
  return "$result"
 }
 trap cleanup_after_update EXIT
@@ -358,7 +446,7 @@ cli="$CURRENT_LINK/dist/server/cli/update.js"
 [[ -f "$cli" ]] || die 'update CLI not found in current release'

 set +e
-"$node_bin" "$cli" --request-file "$REQUEST_FILE" --defer-completion
+run_update_cli "$node_bin" "$APPLY_TIMEOUT_SECONDS" apply --request-file "$REQUEST_FILE" --defer-completion
 update_result=$?
 set -e
 if (( update_result != 0 )); then
@@ -54,9 +54,11 @@ import {
  validateNewPassword,
  verifyPassword,
 } from "./security.js";
+import { isNewerVersion } from "./update.js";
 import {
  ACTIVE_UPDATE_STATUSES,
  checkForUpdate,
+  currentReleaseVersion,
  publicCheckFromCache,
  publicUpdateJob,
  reconcileOrphanedUpdateJobs,
@@ -1012,6 +1014,15 @@ export async function buildApp(database: DatabaseContext, config: AppConfig) {
      const stagedJobId = input.jobId;
      const staged = database.sqlite.prepare("SELECT id, status, operation, version, asset_url AS assetUrl, asset_name AS assetName, expected_sha256 AS expectedSha256 FROM update_jobs WHERE id=? AND admin_id=?").get(stagedJobId, request.auth!.admin.id) as { id: string; status: string; operation: string; version: string; assetUrl: string; assetName: string | null; expectedSha256: string | null } | undefined;
      if (!staged || staged.status !== "staged" || staged.version !== input.version.replace(/^v/i, "")) throw new AppError(409, "UPDATE_NOT_STAGED", "更新任务尚未完成下载");
+      // A package may have been downloaded before the host was upgraded by
+      // another path. Never apply a staged archive that is no longer newer
+      // than the release currently serving traffic.
+      const effectiveCurrentVersion = currentReleaseVersion(config) ?? config.appVersion;
+      if (!isNewerVersion(effectiveCurrentVersion, staged.version)) {
+        const now = Date.now();
+        database.sqlite.prepare("UPDATE update_jobs SET status='failed', error_message=?, completed_at=?, updated_at=? WHERE id=? AND status='staged'").run("暂存更新已过期，当前版本无需再次升级", now, now, stagedJobId);
+        throw new AppError(409, "UPDATE_NOT_AVAILABLE", "暂存更新已过期，请重新检查更新");
+      }
      if (staged.operation === "apply") throw new AppError(409, "UPDATE_IN_PROGRESS", "更新任务正在处理中，请稍候");
      enforceUpdateCooldown(database.sqlite, config, request.auth!.admin.id, "apply", reply);
      const now = Date.now();
@@ -163,7 +163,10 @@ function writeJob(sqlite: Database.Database | undefined, jobId: string, values:
      requested_at=COALESCE(excluded.requested_at, update_jobs.requested_at),
      started_at=COALESCE(excluded.started_at, update_jobs.started_at),
      operation=excluded.operation,
-      status=CASE WHEN update_jobs.status='cancelled' THEN update_jobs.status ELSE excluded.status END,
+      -- Terminal rows are immutable from the runner's ordinary progress
+      -- writes. In particular, a stale/replayed request must not resurrect a
+      -- failed job as queued/downloading/etc.
+      status=CASE WHEN update_jobs.status IN ('cancelled', 'failed', 'completed') THEN update_jobs.status ELSE excluded.status END,
      version=excluded.version, platform=excluded.platform,
      release_url=COALESCE(excluded.release_url, update_jobs.release_url),
      asset_name=COALESCE(excluded.asset_name, update_jobs.asset_name),
@@ -176,6 +179,11 @@ function writeJob(sqlite: Database.Database | undefined, jobId: string, values:
      error_message=COALESCE(excluded.error_message, update_jobs.error_message),
      updated_at=excluded.updated_at,
      completed_at=COALESCE(excluded.completed_at, update_jobs.completed_at)
+    -- Do not let a delayed runner replay overwrite any field on a terminal
+    -- row. The predicate is part of the same SQLite upsert, so a finalizer
+    -- racing this write still wins atomically instead of leaving a partially
+    -- mutated completed/failed/cancelled record.
+    WHERE update_jobs.status NOT IN ('cancelled', 'failed', 'completed')
  `).run(
    jobId,
    values.adminId ?? null,
@@ -230,6 +238,7 @@ async function resolveRelease(options: UpdateRunOptions, platform: ReturnType<ty
      allowedHosts: options.allowedHosts ?? [],
      baseUrl: metadataUrl.toString(),
      maxBytes: options.maxBytes ?? 512 * 1024 * 1024,
+      timeoutMs: options.timeoutMs,
      publicKey: options.publicKey,
      requireSignature: options.requireSignature,
    });
@@ -398,19 +407,28 @@ export function finalizeUpdateJob(
  status: "completed" | "failed",
  message?: string,
 ): void {
+  sqlite.transaction(() => {
    const row = sqlite.prepare(`
      SELECT id, status, version, platform, admin_id AS adminId,
        request_id AS requestId, session_hash AS sessionHash
      FROM update_jobs WHERE id=?
    `).get(jobId) as { id: string; status: UpdateJobStatus; version: string; platform: string; adminId: string | null; requestId: string | null; sessionHash: string | null } | undefined;
    if (!row) throw new Error("更新任务不存在");
+    // A failed finalization can be retried by the runner. Once it has been
+    // committed, make retries a no-op so the error and audit trail stay stable.
+    if (row.status === status) return;
+    // A completed release is terminal. A delayed recovery process must never
+    // be able to downgrade it to failed after the service was healthy.
+    if (row.status === "completed" && status === "failed") throw new Error("更新任务状态不允许完成");
    const canComplete = row.status === "applying" || row.status === "completed";
    const canFail = ACTIVE_UPDATE_STATUSES.includes(row.status) || row.status === "completed" || row.status === "failed";
    if (status === "completed" ? !canComplete : !canFail) throw new Error("更新任务状态不允许完成");
    const now = Date.now();
-  const safeFailureMessage = status === "failed" ? "新版本健康检查失败，已恢复上一版本" : null;
-  sqlite.transaction(() => {
-    sqlite.prepare("UPDATE update_jobs SET status=?, error_message=?, completed_at=?, updated_at=? WHERE id=?").run(status, safeFailureMessage, now, now, jobId);
+    const safeFailureMessage = status === "failed"
+      ? (message?.trim() ? safeErrorMessage(new Error(message)) : "新版本健康检查失败，已恢复上一版本")
+      : null;
+    const result = sqlite.prepare("UPDATE update_jobs SET status=?, error_message=?, completed_at=?, updated_at=? WHERE id=? AND status=?").run(status, safeFailureMessage, now, now, jobId, row.status);
+    if (result.changes !== 1) return;
    writeAudit(sqlite, {
      requestId: row.requestId || randomUUID(),
      actorAdminId: row.adminId,
@@ -569,6 +587,7 @@ export async function main(config: AppConfig = loadConfig()): Promise<void> {
      ...(dataBackupArchive ? { dataBackupArchivePath: dataBackupArchive, dataBackupSource: config.dataDir } : {}),
      ...((arg("--backup-dir")) ? { backupDir: arg("--backup-dir") } : {}),
      allowedHosts: allowedHosts.length ? allowedHosts : config.updateAllowedHosts,
+      timeoutMs: config.updateTimeoutMs,
      maxBytes: config.updateMaxBytes,
      dataBackupMaxBytes: config.maxTotalBytes,
      currentVersion: config.appVersion,
@@ -147,6 +147,7 @@ export function loadConfig() {
    // as 0700 root:root; development/test callers may override --staging-dir.
    updateWorkspaceDir: path.join(installPrefix, ".update-work"),
    updateMaxBytes: integerEnv("TALLYNOTE_UPDATE_MAX_MB", 512) * 1024 * 1024,
+    updateTimeoutMs: integerEnv("TALLYNOTE_UPDATE_TIMEOUT_SECONDS", 30) * 1000,
    // Update checks hit an external release endpoint. Keep a short local
    // cooldown so an authenticated account cannot turn the endpoint into an
    // outbound request flood; set to 0 only for controlled test environments.
@@ -154,19 +154,19 @@ function signatureAssetFor(metadata: ReleaseMetadata, sums: ReleaseAsset): Relea
 export async function attachSidecarHash(
  metadata: ReleaseMetadata,
  asset: ReleaseAsset,
-  options: { allowedHosts: readonly string[]; baseUrl: string; maxBytes: number; publicKey?: string | undefined; requireSignature?: boolean | undefined },
+  options: { allowedHosts: readonly string[]; baseUrl: string; maxBytes: number; timeoutMs?: number | undefined; publicKey?: string | undefined; requireSignature?: boolean | undefined },
 ): Promise<{ asset: ReleaseAsset; signatureVerified: boolean }> {
  let signatureVerified = false;
  if (asset.sha256 && (!options.publicKey || !options.requireSignature)) return { asset, signatureVerified };
  const sums = metadata.assets.find((candidate) => /^(?:sha256sums?|checksums?)(?:\.txt)?$/i.test(path.basename(candidate.name)));
  if (!sums) return { asset, signatureVerified };
  try {
-    const content = await fetchReleaseText(sums.url, { allowedHosts: options.allowedHosts, baseUrl: options.baseUrl, maxBytes: Math.min(options.maxBytes, 2 * 1024 * 1024) });
+    const content = await fetchReleaseText(sums.url, { allowedHosts: options.allowedHosts, baseUrl: options.baseUrl, maxBytes: Math.min(options.maxBytes, 2 * 1024 * 1024), timeoutMs: options.timeoutMs });
    const sha256 = sha256FromSums(content, asset.name);
    if (options.publicKey) {
      const signatureAsset = signatureAssetFor(metadata, sums);
      if (signatureAsset) {
-        const signature = await fetchReleaseBytes(signatureAsset.url, { allowedHosts: options.allowedHosts, baseUrl: options.baseUrl, maxBytes: 64 * 1024 });
+        const signature = await fetchReleaseBytes(signatureAsset.url, { allowedHosts: options.allowedHosts, baseUrl: options.baseUrl, maxBytes: 64 * 1024, timeoutMs: options.timeoutMs });
        signatureVerified = verifyReleaseSignature(content, signature, options.publicKey);
      }
    }
@@ -183,6 +183,7 @@ function policy(config: AppConfig) {
    allowedHosts: config.updateAllowedHosts,
    baseUrl: config.updateMetadataUrl,
    maxRedirects: 3,
+    timeoutMs: config.updateTimeoutMs,
  } as const;
 }

@@ -222,6 +223,7 @@ export async function checkForUpdate(database: Database.Database, config: AppCon
      allowedHosts: config.updateAllowedHosts,
      baseUrl: metadataUrl,
      maxBytes: config.updateMaxBytes,
+      timeoutMs: config.updateTimeoutMs,
      publicKey: config.updatePublicKey,
      requireSignature: config.updateRequireSignature,
    });
@@ -426,7 +428,18 @@ function requestJobId(filePath: string): string | null {
  }
 }

-function currentReleaseVersion(config: AppConfig): string | null {
+function recoveryStateJobId(filePath: string): string | null {
+  try {
+    const info = lstatSync(filePath);
+    if (!info.isFile() || info.isSymbolicLink()) return null;
+    const match = /^job_id=([0-9a-f-]{36})$/m.exec(readFileSync(filePath, "utf8"));
+    return match?.[1] ?? null;
+  } catch {
+    return null;
+  }
+}
+
+export function currentReleaseVersion(config: AppConfig): string | null {
  try {
    const target = realpathSync(config.currentLink);
    const releases = realpathSync(config.releasesDir);
@@ -460,6 +473,12 @@ export function reconcileOrphanedUpdateJobs(database: Database.Database, config:
  const statePresent = stateMtime !== null;
  const requestFresh = requestPresent && now - (requestMtime ?? 0) < ORPHANED_UPDATE_TIMEOUT_MS;
  const stateFresh = statePresent && now - (stateMtime ?? 0) < ORPHANED_UPDATE_TIMEOUT_MS;
+  // The request marker is the hand-off contract between the web process and
+  // the privileged runner. A queued row with a matching, unexpired marker is
+  // still owned by that hand-off even when the runner has not written its
+  // recovery state yet (for example while systemd is starting it).
+  const requestMarkerJobId = requestPresent ? requestJobId(config.updateRequestPath) : null;
+  const stateMarkerJobId = statePresent ? recoveryStateJobId(statePath) : null;
  // A staged download is normally kept for an explicit apply. The one
  // exception is the hand-off window where the API has already changed the
  // operation to `apply` but crashed before writing the request file. That
@@ -468,11 +487,50 @@ export function reconcileOrphanedUpdateJobs(database: Database.Database, config:
  let reconciled = 0;
  const reconciledIds = new Set<string>();
  for (const row of rows) {
+    // A fresh request/state marker means the privileged runner still owns the
+    // hand-off. Do not expire a staged/apply row while the runner is finishing
+    // a successful switch and finalization after a service restart.
+    const matchingFreshRequest = requestMarkerJobId === row.id && requestFresh;
+    const matchingFreshState = stateMarkerJobId === row.id && stateFresh;
+    // A staged archive is actionable only while it is strictly newer than the
+    // release currently serving requests. This can become false when an
+    // administrator upgrades the host by another path (or another operator
+    // completes the same release) before returning to this page. Treat the
+    // archive as an expired terminal task so it cannot keep blocking the
+    // queue or appear as an "apply" action for the current version.
+    const effectiveCurrentVersion = releaseVersion ?? config.appVersion;
+    if (row.status === "staged" && !isNewerVersion(effectiveCurrentVersion, row.version) && !matchingFreshRequest && !matchingFreshState) {
+      const changed = database.transaction(() => {
+        const result = database.prepare(`
+          UPDATE update_jobs
+          SET status='failed', error_message=?, completed_at=?, updated_at=?
+          WHERE id=? AND status='staged'
+        `).run("暂存更新已过期，当前版本无需再次升级", now, now, row.id);
+        if (result.changes !== 1) return false;
+        writeAudit(database, {
+          requestId: row.requestId || randomUUID(),
+          actorAdminId: row.adminId,
+          action: "update.reconciled",
+          targetType: "update",
+          targetId: row.id,
+          outcome: "failure",
+          before: { status: row.status, operation: row.operation, version: row.version },
+          after: { status: "failed", version: row.version, reason: "staged_version_not_newer" },
+        });
+        return true;
+      })();
+      if (changed) {
+        reconciled += 1;
+        reconciledIds.add(row.id);
+      }
+      continue;
+    }
    // A request that never gets claimed by the root runner must not remain in
    // the UI as an endless "queued" task. Once the short hand-off window has
    // elapsed and no recovery marker exists, release the queue explicitly;
    // a fresh state marker proves that the runner has already claimed it.
-    if (row.status === "queued" && typeof row.updatedAt === "number" && !stateFresh && now - row.updatedAt >= QUEUED_UPDATE_TIMEOUT_MS) {
+    if (row.status === "queued" && typeof row.updatedAt === "number" && !matchingFreshState && now - row.updatedAt >= QUEUED_UPDATE_TIMEOUT_MS) {
+      if (matchingFreshRequest) continue;
      const changed = database.transaction(() => {
        const result = database.prepare(`
          UPDATE update_jobs
@@ -503,7 +561,7 @@ export function reconcileOrphanedUpdateJobs(database: Database.Database, config:
    // A stale request/state marker therefore no longer protects an orphaned
    // row forever, while a fresh marker remains owned by the runner.
    if (row.status === "staged") {
-      if (row.operation !== "apply" || requestFresh || stateFresh) continue;
+      if (row.operation !== "apply" || matchingFreshRequest || matchingFreshState) continue;
      const changed = database.transaction(() => {
        const result = database.prepare(`
          UPDATE update_jobs
@@ -529,7 +587,7 @@ export function reconcileOrphanedUpdateJobs(database: Database.Database, config:
      }
      continue;
    }
-    if (requestFresh || stateFresh) continue;
+    if (matchingFreshRequest || matchingFreshState) continue;
    const status: "completed" | "failed" = row.status === "applying" && releaseVersion === row.version ? "completed" : "failed";
    const errorMessage = status === "failed" ? "更新任务超时，已释放更新队列" : null;
    const changed = database.transaction(() => {
@@ -586,15 +644,15 @@ export function cancelUpdateJob(
  jobId?: string,
 ): { cancelled: boolean; message?: string } {
  const job = jobId
-    ? database.prepare("SELECT id, status, operation, version, admin_id AS adminId, download_path AS downloadPath FROM update_jobs WHERE id=?").get(jobId) as { id: string; status: UpdateJobStatus; operation: string; version: string; adminId: string | null; downloadPath: string | null } | undefined
-    : database.prepare("SELECT id, status, operation, version, admin_id AS adminId, download_path AS downloadPath FROM update_jobs WHERE status IN ('queued', 'downloading') ORDER BY created_at DESC LIMIT 1").get() as { id: string; status: UpdateJobStatus; operation: string; version: string; adminId: string | null; downloadPath: string | null } | undefined;
+    ? database.prepare("SELECT id, status, operation, version, admin_id AS adminId, download_path AS downloadPath FROM update_jobs WHERE id=? AND admin_id=?").get(jobId, adminId) as { id: string; status: UpdateJobStatus; operation: string; version: string; adminId: string | null; downloadPath: string | null } | undefined
+    : database.prepare("SELECT id, status, operation, version, admin_id AS adminId, download_path AS downloadPath FROM update_jobs WHERE admin_id=? AND status IN ('queued', 'downloading') ORDER BY created_at DESC LIMIT 1").get(adminId) as { id: string; status: UpdateJobStatus; operation: string; version: string; adminId: string | null; downloadPath: string | null } | undefined;

  if (!job) return { cancelled: false, message: "当前没有处于等待调度或下载中的更新任务" };
  if (job.status !== "queued" && job.status !== "downloading") return { cancelled: false, message: "任务已进入就绪或切换阶段，无法取消" };

  const now = Date.now();
  const changed = database.transaction(() => {
-    const result = database.prepare("UPDATE update_jobs SET status='cancelled', error_message='已手动取消更新', completed_at=?, updated_at=? WHERE id=? AND status IN ('queued', 'downloading')").run(now, now, job.id);
+    const result = database.prepare("UPDATE update_jobs SET status='cancelled', error_message='已手动取消更新', completed_at=?, updated_at=? WHERE id=? AND admin_id=? AND status IN ('queued', 'downloading')").run(now, now, job.id, adminId);
    if (result.changes !== 1) return false;
    writeAudit(database, {
      requestId,
@@ -610,7 +668,9 @@ export function cancelUpdateJob(
  })();

  if (changed) {
-    forceRemoveRequest(config.updateRequestPath);
+    // The request marker is shared by the privileged runner. Never remove a
+    // newer/different administrator's request while cancelling this row.
+    if (requestJobId(config.updateRequestPath) === job.id) forceRemoveRequest(config.updateRequestPath);
    if (job.downloadPath) {
      const target = path.isAbsolute(job.downloadPath) ? job.downloadPath : path.join(config.stagingDir, job.downloadPath);
      import("node:fs/promises").then(({ rm }) => rm(target, { recursive: true, force: true })).catch(() => {});
@@ -59,8 +59,22 @@ export type UrlPolicy = {
  /** When allowedHosts is omitted, requests are constrained to this URL's host. */
  baseUrl?: string | URL | undefined;
  maxRedirects?: number | undefined;
+  /** Maximum time allowed for one metadata/sidecar/archive request. */
+  timeoutMs?: number | undefined;
 };

+/** Release an unread response body before following a redirect or returning
+ * an error. Undici keeps the underlying connection associated with a body
+ * until it is consumed or cancelled; leaving it open can exhaust sockets when
+ * an update feed repeatedly returns errors or oversized responses. */
+async function cancelResponseBody(response: Response): Promise<void> {
+  try {
+    await response.body?.cancel();
+  } catch {
+    // The body may already be consumed/closed. Cancellation is best effort.
+  }
+}
+
 function invalidVersion(): never {
  throw new Error("更新版本号无效");
 }
@@ -157,8 +171,37 @@ function metadataError(): Error {
 }

 const DEFAULT_METADATA_MAX_BYTES = 2 * 1024 * 1024;
+/** Maximum time allowed for one update HTTP request, including its body. */
+export const DEFAULT_UPDATE_TIMEOUT_MS = 30_000;
 export const RELEASE_NOTES_MAX_BYTES = 64 * 1024;

+type UpdateFetchOptions = {
+  fetchImpl?: typeof fetch | undefined;
+  maxBytes?: number | undefined;
+  timeoutMs?: number | undefined;
+};
+
+function updateTimeoutMs(options: UpdateFetchOptions): number {
+  if (options.timeoutMs !== undefined) {
+    if (!Number.isSafeInteger(options.timeoutMs) || options.timeoutMs <= 0) throw new Error("更新请求超时配置无效");
+    return options.timeoutMs;
+  }
+  const configuredSeconds = process.env.TALLYNOTE_UPDATE_TIMEOUT_SECONDS;
+  if (configuredSeconds !== undefined && configuredSeconds.trim() !== "") {
+    const seconds = Number(configuredSeconds);
+    if (!Number.isSafeInteger(seconds) || seconds <= 0) throw new Error("TALLYNOTE_UPDATE_TIMEOUT_SECONDS 必须是大于 0 的整数");
+    return seconds * 1000;
+  }
+  return DEFAULT_UPDATE_TIMEOUT_MS;
+}
+
+function beginUpdateRequest(options: UpdateFetchOptions): { signal: AbortSignal; clear: () => void } {
+  const controller = new AbortController();
+  const timer = setTimeout(() => controller.abort(), updateTimeoutMs(options));
+  timer.unref?.();
+  return { signal: controller.signal, clear: () => clearTimeout(timer) };
+}
+
 function releaseNotesText(value: unknown): string | undefined {
  if (typeof value !== "string" || value.length === 0) return undefined;
  // Gitea exposes both Markdown (body/body_html) and releaseNotes depending on
@@ -210,20 +253,29 @@ function releaseResourceUrl(value: string, current: URL, options: UrlPolicy): st
 }

 /** Read a fetch body without ever buffering more than the caller's bound. */
-async function readBoundedResponse(response: Response, maxBytes: number, tooLargeMessage: string): Promise<Buffer> {
+async function readBoundedResponse(response: Response, maxBytes: number, tooLargeMessage: string, signal?: AbortSignal): Promise<Buffer> {
  if (!Number.isSafeInteger(maxBytes) || maxBytes <= 0) throw new Error("响应大小限制无效");
  const contentLength = response.headers.get("content-length");
  if (contentLength !== null) {
    const declared = Number(contentLength);
-    if (Number.isFinite(declared) && declared > maxBytes) throw new Error(tooLargeMessage);
+    if (Number.isFinite(declared) && declared > maxBytes) {
+      await cancelResponseBody(response);
+      throw new Error(tooLargeMessage);
+    }
  }
  if (!response.body) return Buffer.alloc(0);
  const reader = response.body.getReader();
  const chunks: Buffer[] = [];
  let total = 0;
+  let onAbort: (() => void) | undefined;
+  const abort = signal ? new Promise<never>((_, reject) => {
+    onAbort = () => reject(new Error("更新请求超时"));
+    if (signal.aborted) onAbort();
+    else signal.addEventListener("abort", onAbort, { once: true });
+  }) : undefined;
  try {
    for (;;) {
-      const result = await reader.read();
+      const result = await (abort ? Promise.race([reader.read(), abort]) : reader.read());
      if (result.done) break;
      const chunk = Buffer.from(result.value);
      if (chunk.length > maxBytes - total) {
@@ -233,7 +285,11 @@ async function readBoundedResponse(response: Response, maxBytes: number, tooLarg
      total += chunk.length;
      chunks.push(chunk);
    }
+  } catch (error) {
+    await reader.cancel().catch(() => undefined);
+    throw error;
  } finally {
+    if (signal && onAbort) signal.removeEventListener("abort", onAbort);
    reader.releaseLock();
  }
  return Buffer.concat(chunks, total);
@@ -241,43 +297,35 @@ async function readBoundedResponse(response: Response, maxBytes: number, tooLarg

 export async function fetchReleaseMetadata(
  metadataUrl: string | URL,
-  options: UrlPolicy & { fetchImpl?: typeof fetch | undefined; maxBytes?: number | undefined } = {},
+  options: UrlPolicy & UpdateFetchOptions = {},
 ): Promise<ReleaseMetadata> {
  const fetchImpl = options.fetchImpl ?? fetch;
  let current = validateHttpsUrl(metadataUrl, options);
  const maxRedirects = options.maxRedirects ?? 3;
  let response: Response;
  for (let redirects = 0; ; redirects += 1) {
+    const request = beginUpdateRequest(options);
    try {
-      response = await fetchImpl(current, { method: "GET", redirect: "manual", headers: { accept: "application/json" } });
+      response = await fetchImpl(current, { method: "GET", redirect: "manual", headers: { accept: "application/json" }, signal: request.signal });
    } catch {
+      request.clear();
      throw metadataError();
    }
-    if (response.status < 300 || response.status >= 400) break;
-    if (redirects >= maxRedirects) throw metadataError();
-    const location = response.headers.get("location");
-    if (!location) throw metadataError();
-    current = validateHttpsUrl(new URL(location, current), options.baseUrl ? options : { ...options, baseUrl: current });
-  }
-  if (response.status < 200 || response.status >= 300) throw metadataError();
-  let payload: unknown;
+    if (response.status < 300 || response.status >= 400) {
      try {
+        if (response.status < 200 || response.status >= 300) {
+          await cancelResponseBody(response);
+          throw metadataError();
+        }
        const maxBytes = Math.min(options.maxBytes ?? DEFAULT_METADATA_MAX_BYTES, DEFAULT_METADATA_MAX_BYTES);
-    const body = await readBoundedResponse(response, maxBytes, "更新发布信息过大");
-    payload = JSON.parse(body.toString("utf8"));
-  } catch { throw metadataError(); }
+        const body = await readBoundedResponse(response, maxBytes, "更新发布信息过大", request.signal);
+        const payload: unknown = JSON.parse(body.toString("utf8"));
        if (!payload || typeof payload !== "object") throw metadataError();
        const item = payload as Record<string, unknown>;
        const rawVersion = typeof item.version === "string" ? item.version : typeof item.tag_name === "string" ? item.tag_name : typeof item.tagName === "string" ? item.tagName : undefined;
        if (!rawVersion) throw metadataError();
        const version = parseSemver(rawVersion);
-  if (typeof item.tag_name === "string") {
-    try {
-      if (compareSemver(version, item.tag_name) !== 0) throw metadataError();
-    } catch {
-      throw metadataError();
-    }
-  }
+        if (typeof item.tag_name === "string" && compareSemver(version, item.tag_name) !== 0) throw metadataError();
        const assetsRaw = Array.isArray(item.assets) ? item.assets : [];
        const assets: ReleaseAsset[] = [];
        for (const raw of assetsRaw) {
@@ -298,27 +346,29 @@ export async function fetchReleaseMetadata(
        const releaseName = releaseNameText(item.name ?? item.releaseName);
        let releaseUrl: string | undefined;
        if (typeof item.html_url === "string" || typeof item.url === "string") {
-    try {
-      const candidate = typeof item.html_url === "string" ? item.html_url : item.url as string;
-      releaseUrl = releaseResourceUrl(candidate, current, options);
-    } catch { /* omit invalid optional release page URL */ }
+          try { releaseUrl = releaseResourceUrl(typeof item.html_url === "string" ? item.html_url : item.url as string, current, options); } catch { /* optional */ }
        }
        return {
          version: `${version.major}.${version.minor}.${version.patch}${version.prerelease.length ? `-${version.prerelease.join(".")}` : ""}${version.build.length ? `+${version.build.join(".")}` : ""}`,
-    ...(typeof item.tag_name === "string" ? { tagName: item.tag_name } : {}),
-    ...(releaseName ? { releaseName } : {}),
-    ...(typeof item.published_at === "string" ? { publishedAt: item.published_at } : {}),
-    ...(notes ? { notes } : {}),
-    ...(releaseUrl ? { releaseUrl } : {}),
-    assets,
+          ...(typeof item.tag_name === "string" ? { tagName: item.tag_name } : {}), ...(releaseName ? { releaseName } : {}), ...(typeof item.published_at === "string" ? { publishedAt: item.published_at } : {}), ...(notes ? { notes } : {}), ...(releaseUrl ? { releaseUrl } : {}), assets,
        };
+      } catch { throw metadataError(); }
+      finally { request.clear(); }
+    }
+    await cancelResponseBody(response);
+    request.clear();
+    if (redirects >= maxRedirects) throw metadataError();
+    const location = response.headers.get("location");
+    if (!location) throw metadataError();
+    current = validateHttpsUrl(new URL(location, current), options.baseUrl ? options : { ...options, baseUrl: current });
+  }
 }

 /** Fetch a small text sidecar (for example SHA256SUMS) with the same
 * redirect, HTTPS and host policy used for release metadata. */
 export async function fetchReleaseText(
  textUrl: string | URL,
-  options: UrlPolicy & { fetchImpl?: typeof fetch | undefined; maxBytes?: number | undefined } = {},
+  options: UrlPolicy & UpdateFetchOptions = {},
 ): Promise<string> {
  const fetchImpl = options.fetchImpl ?? fetch;
  let current = validateHttpsUrl(textUrl, options);
@@ -328,27 +378,32 @@ export async function fetchReleaseText(
  const maxRedirects = options.maxRedirects ?? 3;
  let response: Response;
  for (let redirects = 0; ; redirects += 1) {
+    const request = beginUpdateRequest(options);
    try {
-      response = await fetchImpl(current, { method: "GET", redirect: "manual" });
+      response = await fetchImpl(current, { method: "GET", redirect: "manual", signal: request.signal });
    } catch {
+      request.clear();
      throw new Error("更新校验文件下载失败");
    }
-    if (response.status < 300 || response.status >= 400) break;
+    if (response.status < 300 || response.status >= 400) {
+      if (response.status < 200 || response.status >= 300) { await cancelResponseBody(response); request.clear(); throw new Error("更新校验文件下载失败"); }
+      const declared = Number(response.headers.get("content-length") ?? 0);
+      const maxBytes = options.maxBytes ?? 1024 * 1024;
+      if (declared > maxBytes) { await cancelResponseBody(response); request.clear(); throw new Error("更新校验文件过大"); }
+      try {
+        return (await readBoundedResponse(response, maxBytes, "更新校验文件过大", request.signal)).toString("utf8");
+      } catch (error) {
+        if (error instanceof Error && error.message === "更新校验文件过大") throw error;
+        throw new Error("更新校验文件下载失败");
+      } finally { request.clear(); }
+    }
+    await cancelResponseBody(response);
+    request.clear();
    if (redirects >= maxRedirects) throw new Error("更新校验文件下载失败");
    const location = response.headers.get("location");
    if (!location) throw new Error("更新校验文件下载失败");
    current = validateHttpsUrl(new URL(location, current), redirectPolicy);
  }
-  if (response.status < 200 || response.status >= 300) throw new Error("更新校验文件下载失败");
-  const declared = Number(response.headers.get("content-length") ?? 0);
-  const maxBytes = options.maxBytes ?? 1024 * 1024;
-  if (declared > maxBytes) throw new Error("更新校验文件过大");
-  try {
-    return (await readBoundedResponse(response, maxBytes, "更新校验文件过大")).toString("utf8");
-  } catch (error) {
-    if (error instanceof Error && error.message === "更新校验文件过大") throw error;
-    throw new Error("更新校验文件下载失败");
-  }
 }

 /** Fetch a bounded binary sidecar (for example an Ed25519 detached
@@ -356,7 +411,7 @@ export async function fetchReleaseText(
 * this separate from fetchReleaseText. */
 export async function fetchReleaseBytes(
  bytesUrl: string | URL,
-  options: UrlPolicy & { fetchImpl?: typeof fetch | undefined; maxBytes?: number | undefined } = {},
+  options: UrlPolicy & UpdateFetchOptions = {},
 ): Promise<Buffer> {
  const fetchImpl = options.fetchImpl ?? fetch;
  let current = validateHttpsUrl(bytesUrl, options);
@@ -366,27 +421,32 @@ export async function fetchReleaseBytes(
  const maxRedirects = options.maxRedirects ?? 3;
  let response: Response;
  for (let redirects = 0; ; redirects += 1) {
+    const request = beginUpdateRequest(options);
    try {
-      response = await fetchImpl(current, { method: "GET", redirect: "manual" });
+      response = await fetchImpl(current, { method: "GET", redirect: "manual", signal: request.signal });
    } catch {
+      request.clear();
      throw new Error("更新签名下载失败");
    }
-    if (response.status < 300 || response.status >= 400) break;
+    if (response.status < 300 || response.status >= 400) {
+      if (response.status < 200 || response.status >= 300) { await cancelResponseBody(response); request.clear(); throw new Error("更新签名下载失败"); }
+      const declared = Number(response.headers.get("content-length") ?? 0);
+      const maxBytes = options.maxBytes ?? 64 * 1024;
+      if (declared > maxBytes) { await cancelResponseBody(response); request.clear(); throw new Error("更新签名文件过大"); }
+      try {
+        return await readBoundedResponse(response, maxBytes, "更新签名文件过大", request.signal);
+      } catch (error) {
+        if (error instanceof Error && error.message === "更新签名文件过大") throw error;
+        throw new Error("更新签名下载失败");
+      } finally { request.clear(); }
+    }
+    await cancelResponseBody(response);
+    request.clear();
    if (redirects >= maxRedirects) throw new Error("更新签名下载失败");
    const location = response.headers.get("location");
    if (!location) throw new Error("更新签名下载失败");
    current = validateHttpsUrl(new URL(location, current), redirectPolicy);
  }
-  if (response.status < 200 || response.status >= 300) throw new Error("更新签名下载失败");
-  const declared = Number(response.headers.get("content-length") ?? 0);
-  const maxBytes = options.maxBytes ?? 64 * 1024;
-  if (declared > maxBytes) throw new Error("更新签名文件过大");
-  try {
-    return await readBoundedResponse(response, maxBytes, "更新签名文件过大");
-  } catch (error) {
-    if (error instanceof Error && error.message === "更新签名文件过大") throw error;
-    throw new Error("更新签名下载失败");
-  }
 }

 export function selectReleaseAsset(release: ReleaseMetadata, platform = detectPlatform(), runtimeHash?: string): ReleaseAsset | undefined {
@@ -438,7 +498,7 @@ export async function verifySha256(filePath: string, expected: string): Promise<
 export async function downloadReleaseAsset(
  url: string | URL,
  destination: string,
-  options: UrlPolicy & { fetchImpl?: typeof fetch | undefined; maxBytes?: number | undefined; onProgress?: ((downloadedBytes: number, totalBytes: number | null) => void) | undefined } = {},
+  options: UrlPolicy & UpdateFetchOptions & { onProgress?: ((downloadedBytes: number, totalBytes: number | null) => void) | undefined } = {},
 ): Promise<{ size: number; sha256: string }> {
  const fetchImpl = options.fetchImpl ?? fetch;
  let current = validateHttpsUrl(url, options);
@@ -448,22 +508,32 @@ export async function downloadReleaseAsset(
  const maxRedirects = options.maxRedirects ?? 3;
  let response: Response;
  for (let redirects = 0; ; redirects += 1) {
+    const request = beginUpdateRequest(options);
    try {
-      response = await fetchImpl(current, { method: "GET", redirect: "manual" });
+      response = await fetchImpl(current, { method: "GET", redirect: "manual", signal: request.signal });
    } catch {
+      request.clear();
      throw new Error("更新文件下载失败");
    }
-    if (response.status < 300 || response.status >= 400) break;
+    if (response.status < 300 || response.status >= 400) { request.clear(); break; }
+    await cancelResponseBody(response);
+    request.clear();
    if (redirects >= maxRedirects) throw new Error("更新文件下载失败");
    const location = response.headers.get("location");
    if (!location) throw new Error("更新文件下载失败");
    current = validateHttpsUrl(new URL(location, current), redirectPolicy);
  }
-  if (response.status < 200 || response.status >= 300 || !response.body) throw new Error("更新文件下载失败");
+  if (response.status < 200 || response.status >= 300 || !response.body) {
+    await cancelResponseBody(response);
+    throw new Error("更新文件下载失败");
+  }
  const declared = Number(response.headers.get("content-length") ?? 0);
  const totalBytes = Number.isSafeInteger(declared) && declared > 0 ? declared : null;
  const maxBytes = options.maxBytes ?? 512 * 1024 * 1024;
-  if (declared > maxBytes) throw new Error("更新文件超过大小限制");
+  if (declared > maxBytes) {
+    await cancelResponseBody(response);
+    throw new Error("更新文件超过大小限制");
+  }
  await mkdir(path.dirname(destination), { recursive: true, mode: 0o700 });
  const temporary = `${destination}.part-${randomUUID()}`;
  let size = 0;
@@ -475,8 +545,10 @@ export async function downloadReleaseAsset(
    hash.update(chunk);
    callback(null, chunk);
  } });
+  const request = beginUpdateRequest(options);
  try {
-    await pipeline(Readable.fromWeb(response.body as import("node:stream/web").ReadableStream), meter, createWriteStream(temporary, { flags: "wx", mode: 0o600 }));
+    const source = Readable.fromWeb(response.body as import("node:stream/web").ReadableStream, { signal: request.signal });
+    await pipeline(source, meter, createWriteStream(temporary, { flags: "wx", mode: 0o600 }));
    const fd = await open(temporary, "r");
    await fd.sync();
    await fd.close();
@@ -484,6 +556,8 @@ export async function downloadReleaseAsset(
  } catch (error) {
    await import("node:fs/promises").then(({ rm }) => rm(temporary, { force: true })).catch(() => undefined);
    throw error instanceof Error && error.message.startsWith("更新文件") ? error : new Error("更新文件下载失败");
+  } finally {
+    request.clear();
  }
  return { size, sha256: hash.digest("hex") };
 }
@@ -1,8 +1,5 @@
 [Unit]
 Description=TallyNote privileged release updater
-After=network-online.target
-Wants=network-online.target
-
 [Service]
 Type=oneshot
 User=root
@@ -11,10 +8,12 @@ WorkingDirectory=/opt/tallynote/current
 EnvironmentFile=-/etc/tallynote/tallynote.env
 ExecStart=/usr/local/libexec/tallynote-update-runner
 Environment=PATH=/usr/sbin:/usr/bin:/sbin:/bin
+# The runner consumes queued requests immediately and applies its own bounded
+# phase timeouts while keeping full CLI diagnostics in the runner log.
 # Downloads, archive validation and data backups can exceed systemd's 90s
 # default start timeout on a slower server. Keep one update job alive long
 # enough to finish or reach its own health-check/recovery path.
-TimeoutStartSec=30min
+TimeoutStartSec=32min
 NoNewPrivileges=true
 # Keep the updater compatible with the same Node/libuv interface discovery
 # path while retaining an explicit socket-family allowlist.
@@ -9,6 +9,7 @@ TALLYNOTE_TIMEZONE=Asia/Shanghai
 TALLYNOTE_UPDATE_STRATEGY=systemd
 TALLYNOTE_UPDATE_METADATA_URL=https://git.awaioi.com/api/v1/repos/awaioi/TallyNote/releases/latest
 TALLYNOTE_UPDATE_ALLOWED_HOSTS=git.awaioi.com
+TALLYNOTE_UPDATE_TIMEOUT_SECONDS=30
 TALLYNOTE_UPDATE_REQUIRE_SIGNATURE=false
 TALLYNOTE_UPDATE_CHECK_COOLDOWN_SECONDS=60
 TALLYNOTE_UPDATE_DOWNLOAD_COOLDOWN_SECONDS=15
@@ -155,6 +155,53 @@ describe("更新 API", () => {
    expect(checked.json().latest).toMatchObject({ version: "1.3.0", isNewer: true });
  });

+  it("不会应用已经等于当前版本的暂存更新", async () => {
+    const session = await login("update-staged-current");
+    const admin = database.sqlite.prepare("SELECT id FROM admins WHERE username=?").get("update-staged-current") as { id: string };
+    const now = Date.now();
+    const stagedId = randomUUID();
+    database.sqlite.prepare(`
+      INSERT INTO update_jobs(
+        id, admin_id, operation, status, version, platform, release_url,
+        asset_name, asset_url, expected_sha256, actual_sha256, download_path,
+        created_at, updated_at
+      ) VALUES (?, ?, 'download', 'staged', ?, ?, ?, ?, ?, ?, ?, ?, ?, ?)
+    `).run(
+      stagedId,
+      admin.id,
+      config.appVersion,
+      detectPlatform().target,
+      config.updateMetadataUrl,
+      "current.tar.gz",
+      "https://updates.example/current.tar.gz",
+      "c".repeat(64),
+      "c".repeat(64),
+      path.join(config.dataDir, "staged-current"),
+      now,
+      now,
+    );
+
+    const apply = await app.inject({
+      method: "POST",
+      url: "/api/update/apply",
+      headers: { origin: config.publicOrigin, cookie: session.cookies, "x-csrf-token": session.csrf },
+      payload: { jobId: stagedId, version: config.appVersion, confirm: true },
+    });
+    expect(apply.statusCode).toBe(409);
+    // Reconciliation expires same-version staged jobs before the apply route
+    // can consume them, so the public response is the generic not-staged
+    // conflict while the database records the precise expiry reason.
+    expect(apply.json().error.code).toBe("UPDATE_NOT_STAGED");
+    expect(database.sqlite.prepare("SELECT status, error_message AS errorMessage FROM update_jobs WHERE id=?").get(stagedId)).toEqual({
+      status: "failed",
+      errorMessage: "暂存更新已过期，当前版本无需再次升级",
+    });
+
+    const status = await app.inject({ method: "GET", url: "/api/update/status", headers: { cookie: session.cookies } });
+    expect(status.statusCode).toBe(200);
+    expect(status.json().job).toBeNull();
+  });
+
  it("更新任务只对发起管理员可见，并隐藏内部错误详情", async () => {
    const owner = await login("update-owner");
    const other = await login("update-other");
@@ -176,6 +223,42 @@ describe("更新 API", () => {
    expect(ownDetail.json().job.errorMessage).toBe("更新失败，请查看服务器日志或重试");
  });

+  it("取消任务按管理员隔离，并只删除匹配任务的请求文件", async () => {
+    const owner = await login("cancel-owner");
+    const other = await login("cancel-other");
+    const ownerId = (database.sqlite.prepare("SELECT id FROM admins WHERE username=?").get("cancel-owner") as { id: string }).id;
+    const otherId = (database.sqlite.prepare("SELECT id FROM admins WHERE username=?").get("cancel-other") as { id: string }).id;
+    const now = Date.now();
+    const ownerJobId = randomUUID();
+    const otherJobId = randomUUID();
+    const insert = database.sqlite.prepare(`
+      INSERT INTO update_jobs(id, admin_id, operation, status, version, platform, asset_url, created_at, updated_at)
+      VALUES (?, ?, 'download', 'queued', '1.3.0', ?, 'https://updates.example/update.tar.gz', ?, ?)
+    `);
+    insert.run(ownerJobId, ownerId, detectPlatform().target, now, now);
+    insert.run(otherJobId, otherId, detectPlatform().target, now + 1, now + 1);
+    await import("node:fs/promises").then(({ writeFile }) => writeFile(config.updateRequestPath, JSON.stringify({ jobId: otherJobId }), { encoding: "utf8", mode: 0o600 }));
+
+    const ownerCancel = await app.inject({
+      method: "POST", url: "/api/update/cancel",
+      headers: { origin: config.publicOrigin, cookie: owner.cookies, "x-csrf-token": owner.csrf },
+      payload: { jobId: ownerJobId },
+    });
+    expect(ownerCancel.statusCode).toBe(200);
+    expect((database.sqlite.prepare("SELECT status FROM update_jobs WHERE id=?").get(ownerJobId) as { status: string }).status).toBe("cancelled");
+    expect((database.sqlite.prepare("SELECT status FROM update_jobs WHERE id=?").get(otherJobId) as { status: string }).status).toBe("queued");
+    expect(existsSync(config.updateRequestPath)).toBe(true);
+
+    const otherCancel = await app.inject({
+      method: "POST", url: "/api/update/cancel",
+      headers: { origin: config.publicOrigin, cookie: other.cookies, "x-csrf-token": other.csrf },
+      payload: {},
+    });
+    expect(otherCancel.statusCode).toBe(200);
+    expect((database.sqlite.prepare("SELECT status FROM update_jobs WHERE id=?").get(otherJobId) as { status: string }).status).toBe("cancelled");
+    expect(existsSync(config.updateRequestPath)).toBe(false);
+  });
+
  it("应用前重新校验失败时写入失败审计", async () => {
    const session = await login("update-audit");
    globalThis.fetch = (async () => new Response("upstream unavailable", { status: 503 })) as typeof fetch;
@@ -286,8 +286,27 @@ describe("更新安全工具", () => {
      expect(await readFile(path.join(config.currentLink, "dist", "marker"), "utf8")).toBe("new");
      const row = database.sqlite.prepare("SELECT operation, status FROM update_jobs WHERE id=?").get(jobId);
      expect(row).toEqual({ operation: "apply", status: "applying" });
-      finalizeUpdateJob(database.sqlite, jobId, "failed");
-      expect(database.sqlite.prepare("SELECT status FROM update_jobs WHERE id=?").get(jobId)).toEqual({ status: "failed" });
+      finalizeUpdateJob(database.sqlite, jobId, "failed", "健康检查失败（自定义）");
+      expect(database.sqlite.prepare("SELECT status, error_message AS errorMessage FROM update_jobs WHERE id=?").get(jobId)).toEqual({ status: "failed", errorMessage: "健康检查失败（自定义）" });
+      finalizeUpdateJob(database.sqlite, jobId, "failed", "第二次 finalize 不应覆盖原消息");
+      expect(database.sqlite.prepare("SELECT status, error_message AS errorMessage FROM update_jobs WHERE id=?").get(jobId)).toEqual({ status: "failed", errorMessage: "健康检查失败（自定义）" });
+      expect(database.sqlite.prepare("SELECT COUNT(*) AS count FROM audit_events WHERE action='update.failed' AND target_id=?").get(jobId)).toEqual({ count: 1 });
+      const defaultJobId = randomUUID();
+      database.sqlite.prepare(`
+        INSERT INTO update_jobs(id, operation, status, version, platform, asset_url, created_at, updated_at)
+        VALUES (?, 'apply', 'applying', '1.3.0', ?, ?, ?, ?)
+      `).run(defaultJobId, detectPlatform().target, "https://updates.example/" + assetName, now, now);
+      finalizeUpdateJob(database.sqlite, defaultJobId, "failed", "");
+      expect(database.sqlite.prepare("SELECT error_message AS errorMessage FROM update_jobs WHERE id=?").get(defaultJobId)).toEqual({ errorMessage: "新版本健康检查失败，已恢复上一版本" });
+      const completedJobId = randomUUID();
+      database.sqlite.prepare(`
+        INSERT INTO update_jobs(id, operation, status, version, platform, asset_url, created_at, updated_at)
+        VALUES (?, 'apply', 'completed', '1.3.0', ?, ?, ?, ?)
+      `).run(completedJobId, detectPlatform().target, "https://updates.example/" + assetName, now, now);
+      finalizeUpdateJob(database.sqlite, completedJobId, "completed");
+      expect(database.sqlite.prepare("SELECT COUNT(*) AS count FROM audit_events WHERE action='update.completed' AND target_id=?").get(completedJobId)).toEqual({ count: 0 });
+      expect(() => finalizeUpdateJob(database.sqlite, completedJobId, "failed", "不能降级已完成任务")).toThrow("更新任务状态不允许完成");
+      expect(database.sqlite.prepare("SELECT status FROM update_jobs WHERE id=?").get(completedJobId)).toEqual({ status: "completed" });
    } finally {
      globalThis.fetch = previousFetch;
      if (database) database.sqlite.close();
@@ -385,7 +404,7 @@ describe("更新安全工具", () => {
    }
  });

-  it("队列任务有新请求标记时可被重新检查，标记过期后才回收", async () => {
+  it("队列任务有匹配请求标记时保留到租约过期，过期后才回收", async () => {
    const root = await mkdtemp(path.join(tmpdir(), "tallynote-update-queued-marker-"));
    let database: ReturnType<typeof openDatabase> | undefined;
    try {
@@ -412,12 +431,14 @@ describe("更新安全工具", () => {
      const now = Date.now();
      await utimes(config.updateRequestPath, new Date(now), new Date(now));

-      expect(reconcileOrphanedUpdateJobs(database.sqlite, config, now)).toBe(1);
-      expect(database.sqlite.prepare("SELECT status FROM update_jobs WHERE id=?").get(jobId)).toEqual({ status: "failed" });
-      await expect(stat(config.updateRequestPath)).rejects.toThrow();
+      // The DB row is old, but the request marker is fresh and names this
+      // exact job. Keep it queued while systemd has a chance to consume it.
+      expect(reconcileOrphanedUpdateJobs(database.sqlite, config, now)).toBe(0);
+      expect(database.sqlite.prepare("SELECT status FROM update_jobs WHERE id=?").get(jobId)).toEqual({ status: "queued" });
+      await expect(stat(config.updateRequestPath)).resolves.toBeTruthy();

      const expiredNow = now + ORPHANED_UPDATE_TIMEOUT_MS + 1;
-      expect(reconcileOrphanedUpdateJobs(database.sqlite, config, expiredNow)).toBe(0);
+      expect(reconcileOrphanedUpdateJobs(database.sqlite, config, expiredNow)).toBe(1);
      expect(database.sqlite.prepare("SELECT status FROM update_jobs WHERE id=?").get(jobId)).toEqual({ status: "failed" });
      await expect(stat(config.updateRequestPath)).rejects.toThrow();
    } finally {
@@ -32,9 +32,9 @@ function App() {
  const logoutInFlight = useRef(false);
  useDialogAccessibility();
  const notify = useCallback((message: string, kind: "success" | "error" | "info" = "info") => {
-    // The placement container owns the responsive right inset. Keeping the
-    // item offset at zero avoids pushing narrow-screen notices off canvas.
-    const options = { content: message, duration: 4200, placement: "top-right" as const, offset: [24, 76] as [number, number], zIndex: 6000 };
+    // Keep notices in the lower-right safe area so they do not compete with
+    // the header controls or obscure the page title.
+    const options = { content: message, duration: 4200, placement: "bottom-right" as const, offset: [24, 24] as [number, number], zIndex: 6000 };
    const show = kind === "success" ? NotificationPlugin.success : kind === "error" ? NotificationPlugin.error : NotificationPlugin.info;
    void show(options);
  }, []);
@@ -21,19 +21,14 @@ import {
  X,
  FileCode,
  HardDrive,
-  Terminal,
 } from "lucide-react";
-import { Button, Card, Dialog, RadioGroup, Radio, Steps, Tag, Tooltip } from "tdesign-react";
+import { Button, Card, Dialog, Steps, Tag, Tooltip } from "tdesign-react";
 import { Page, Surface } from "../common";
 import { api, ApiError } from "../../services/api";
 import { dateText } from "../../utils/date";
-import type { MockScenario, MockUpdateState } from "./mockData";

 const { StepItem } = Steps;

-// Enable mock preview in local development
-const MOCK_PREVIEW_ENABLED = import.meta.env.DEV;
-
 export type JobStatus =
  | "queued"
  | "downloading"
@@ -234,14 +229,8 @@ export default function UpdatePage({
  timezone?: string;
  notify?: (msg: string, type?: "success" | "info" | "error") => void;
 }) {
-  // Mock mode switcher for local developer preview
-  const [mockScenario, setMockScenario] = useState<"live" | MockScenario>("live");
-  const mockTimer = useRef<number | null>(null);
-  const [mockCatalog, setMockCatalog] = useState<Record<MockScenario, MockUpdateState> | null>(null);
-
  // Live state
  const [liveInfo, setLiveInfo] = useState<UpdateInfo | null>(null);
-  const [mockInfoState, setMockInfoState] = useState<UpdateInfo | null>(null);
  const [loading, setLoading] = useState(true);
  const [checking, setChecking] = useState(false);
  const [error, setError] = useState("");
@@ -259,67 +248,53 @@ export default function UpdatePage({
  const announced = useRef<string | null>(null);
  const checkInFlight = useRef(false);
  const actionInFlight = useRef(false);
+  const cancelInFlight = useRef(false);
+  const loadInFlight = useRef(false);
  const disconnected = useRef(false);
  const recoveredNotice = useRef(false);

-  // Active info depending on mock vs live
-  const isMock = MOCK_PREVIEW_ENABLED && mockScenario !== "live" && Boolean(mockCatalog);
-  const selectedMock = mockScenario !== "live" ? mockCatalog?.[mockScenario] : undefined;
-  const info = isMock && selectedMock ? (mockInfoState ?? selectedMock.info) : liveInfo;
+  const info = liveInfo;

-  // Handle mock scenario change
-  const handleScenarioChange = (scenario: "live" | MockScenario) => {
-    setMockScenario(scenario);
-    if (mockTimer.current !== null) {
-      window.clearTimeout(mockTimer.current);
-      mockTimer.current = null;
-    }
-    if (scenario !== "live") {
-      const next = mockCatalog?.[scenario];
-      if (!next) return;
-      setMockInfoState(JSON.parse(JSON.stringify(next.info)));
-      notify?.(`已切换至 Mock 场景：${next.title}`, "info");
-    } else {
-      setMockInfoState(null);
-      notify?.("已切回真实后端模式", "info");
-    }
+  const mergeInfo = (incoming: UpdateInfo, preserveJob = false) => {
+    setLiveInfo((current) => {
+      if (!current) return incoming;
+      const next = {
+        ...current,
+        ...incoming,
+        // A check response describes the release, but must not erase the job
+        // that is already being displayed while that check is in flight.
+        job: preserveJob
+          ? (current.job ?? incoming.job)
+          : (!Object.prototype.hasOwnProperty.call(incoming, "job") ? current.job : incoming.job),
      };
-
-  useEffect(() => () => {
-    if (mockTimer.current !== null) window.clearTimeout(mockTimer.current);
-  }, []);
-
-  useEffect(() => {
-    if (!import.meta.env.DEV) return;
-    let disposed = false;
-    void import("./mockData").then(({ MOCK_SCENARIOS }) => {
-      if (!disposed) setMockCatalog(MOCK_SCENARIOS);
+      // Some status/check responses are intentionally partial. Keep fields
+      // from the last successful response when a field is omitted.
+      if (!Object.prototype.hasOwnProperty.call(incoming, "latest")) next.latest = current.latest;
+      if (!Object.prototype.hasOwnProperty.call(incoming, "checkedAt")) next.checkedAt = current.checkedAt;
+      if (!Object.prototype.hasOwnProperty.call(incoming, "strategy")) next.strategy = current.strategy;
+      return next;
    });
-    return () => {
-      disposed = true;
  };
-  }, []);

-  const load = async () => {
-    if (isMock) return;
-    setLoading(true);
+  const load = async (showLoading = true): Promise<UpdateInfo | null> => {
+    if (loadInFlight.current) return null;
+    loadInFlight.current = true;
+    if (showLoading) setLoading(true);
    setError("");
    try {
      const res = await api<UpdateInfo>("/api/update/status");
-      setLiveInfo(res);
+      mergeInfo(res);
      updateInfoCache = res;
+      return res;
    } catch (e) {
      setError((e as Error).message);
+      return null;
    } finally {
-      setLoading(false);
+      if (showLoading) setLoading(false);
+      loadInFlight.current = false;
    }
  };

-  useEffect(() => {
-    if (!isMock) void load();
-    else setLoading(false);
-  }, [isMock]);
-
  // Keep terminal jobs visible so operators can understand what happened and
  // recover without guessing. The polling effect below only polls active jobs.
  const job = info?.job ?? null;
@@ -342,9 +317,9 @@ export default function UpdatePage({
    return () => window.clearInterval(timer);
  }, [restartAt]);

-  // Live polling effect: only poll when active job exists
+  // Live polling effect for an active job. Completed responses are refreshed
+  // once so latest/checkedAt/strategy stay current; other terminal states stay visible.
  useEffect(() => {
-    if (isMock) return;
    const shouldPoll = Boolean(
      job && (pollableStatuses.has(job.status) || (job.status === "staged" && job.operation === "apply"))
    );
@@ -376,23 +351,53 @@ export default function UpdatePage({
          setReloadReady(true);
          notify?.("系统升级完成，请刷新页面", "success");
        }
-        if (
+        if (result.job.status === "completed") {
+          void load(false);
+        } else if (
          pollableStatuses.has(result.job.status) ||
          (result.job.status === "staged" && result.job.operation === "apply")
        ) {
          schedule(1500);
        }
-      } catch {
+      } catch (caught) {
        if (disposed) return;
+        const status = caught instanceof ApiError ? caught.status : 0;
+        const message = caught instanceof Error ? caught.message : "读取更新任务状态失败";
+        if (status === 404) {
+          setPollError("更新任务已结束，正在刷新状态。");
+          void load(false);
+          return;
+        }
+        if (status === 401) {
+          setPollError("登录已失效，请重新登录。");
+          return;
+        }
+        if (status === 403) {
+          setPollError("没有权限读取更新任务状态。");
+          return;
+        }
+
        failures += 1;
-        disconnected.current = true;
+        disconnected.current = status === 0 || status === 408;
        recoveredNotice.current = false;
-        setPollError(
-          `服务正在平滑重启${
-            restartSeconds !== null ? `，预计 ${restartSeconds} 秒后恢复` : "，页面正在自动探活重试"
-          }。升级任务仍在后台安全执行。`
-        );
-        schedule(Math.min(1500 * 2 ** Math.min(failures, 3), 10_000));
+        if (status === 409) {
+          setPollError(`${message}，正在刷新状态。`);
+          void load(false);
+          return;
+        }
+        if (status === 429) {
+          setPollError(`${message}，稍后继续同步。`);
+        } else if (status === 408) {
+          setPollError("读取更新任务状态超时，正在重试。");
+        } else if (status === 0) {
+          setPollError("更新服务连接异常，正在重试。");
+        } else {
+          setPollError(`${message}，正在重试。`);
+        }
+        const retryAfter = caught instanceof ApiError && caught.retryAfter
+          ? Math.max(1000, caught.retryAfter * 1000)
+          : Math.min(1500 * 2 ** Math.min(failures, 3), 10_000);
+        schedule(retryAfter);
      }
    };
    void poll();
@@ -400,24 +405,62 @@ export default function UpdatePage({
      disposed = true;
      if (timer !== undefined) window.clearTimeout(timer);
    };
-  }, [isMock, job?.id, job?.status, job?.operation, notify]);
+  }, [job?.id, job?.status, job?.operation, notify]);
+
+  // With no visible job, make a low-frequency status request so a task created
+  // elsewhere can still appear without creating a request storm.
+  useEffect(() => {
+    if (job) return;
+    let timer: number | undefined;
+    let disposed = false;
+    const discover = () => {
+      if (disposed || document.visibilityState !== "visible") return;
+      void load(false);
+    };
+    const schedule = () => {
+      if (disposed) return;
+      if (timer !== undefined) window.clearTimeout(timer);
+      timer = window.setTimeout(() => {
+        discover();
+        schedule();
+      }, 5000);
+    };
+    const onVisibilityChange = () => {
+      if (document.visibilityState === "visible") {
+        discover();
+        schedule();
+      } else if (timer !== undefined) {
+        window.clearTimeout(timer);
+        timer = undefined;
+      }
+    };
+    if (document.visibilityState === "visible") schedule();
+    document.addEventListener("visibilitychange", onVisibilityChange);
+    return () => {
+      disposed = true;
+      if (timer !== undefined) window.clearTimeout(timer);
+      document.removeEventListener("visibilitychange", onVisibilityChange);
+    };
+  }, [job?.id, job?.status, job?.operation]);

  // Check update handler
  const check = async () => {
-    if (isMock) {
-      setChecking(true);
-      window.setTimeout(() => {
-        setChecking(false);
-        notify?.("Mock：检查完成，已是最新配置状态", "success");
-      }, 600);
-      return;
-    }
    if (checkInFlight.current) return;
    checkInFlight.current = true;
    setChecking(true);
    setError("");
    try {
-      setLiveInfo(await api<UpdateInfo>("/api/update/check", { method: "POST" }));
+      const result = await api<UpdateInfo>("/api/update/check", { method: "POST" });
+      // The check endpoint returns release metadata but not task state. Read
+      // the status endpoint once more so reconciliation performed before the
+      // check is authoritative: an expired staged task must disappear from
+      // this page immediately instead of surviving until a full refresh.
+      const status = await api<UpdateInfo>("/api/update/status");
+      setLiveInfo((current) => ({
+        ...(current ?? result),
+        ...result,
+        job: status.job,
+      }));
      notify?.("版本检查完成", "info");
    } catch (e) {
      if (e instanceof ApiError && e.status === 429) {
@@ -431,9 +474,28 @@ export default function UpdatePage({
    }
  };

+  useEffect(() => {
+    let disposed = false;
+    const bootstrap = async () => {
+      const snapshot = await load();
+      if (disposed || !snapshot) return;
+      // Status may be satisfied from the release cache. Refresh it on entry
+      // only when the cached result is absent or older than one minute; this
+      // keeps the page current without turning navigation into a burst of
+      // rate-limited checks.
+      const checkedAt = snapshot.checkedAt || 0;
+      if (!checkedAt || !snapshot.latest || Date.now() - checkedAt > 60_000) await check();
+    };
+    void bootstrap();
+    return () => {
+      disposed = true;
+    };
+  }, []);
+
  // Cancel queued job handler
  const cancelJob = async () => {
-    if (cancelling) return;
+    if (cancelInFlight.current || !job?.id) return;
+    cancelInFlight.current = true;
    setCancelling(true);
    try {
      await api("/api/update/cancel", { method: "POST", body: JSON.stringify({ jobId: job?.id }) });
@@ -445,6 +507,7 @@ export default function UpdatePage({
      notify?.((e as Error).message, "error");
    } finally {
      setCancelling(false);
+      cancelInFlight.current = false;
    }
  };

@@ -501,9 +564,20 @@ export default function UpdatePage({

  const latest = info?.latest;
  const notes = notesFor(latest);
+  const hasChecked = Boolean(info?.checkedAt);
+  const releaseState = checking
+    ? "checking"
+    : !hasChecked
+      ? "unverified"
+      : !latest
+        ? "unavailable"
+        : latest.isNewer
+          ? latest.compatible && latest.integrityReady ? "available" : "blocked"
+          : "up-to-date";

  const canDownload = Boolean(
    info?.strategy === "systemd" &&
+      !checking &&
      latest?.isNewer &&
      latest.compatible &&
      latest.integrityReady &&
@@ -512,14 +586,19 @@ export default function UpdatePage({

  const canApply = Boolean(
    info?.strategy === "systemd" &&
+      !checking &&
      job &&
      job.status === "staged" &&
-      job.operation === "download"
+      job.operation === "download" &&
+      latest?.isNewer &&
+      latest.version === job.version &&
+      job.version !== info.currentVersion
  );

  const hasActiveJob = Boolean(
-    job && activeStatuses.has(job.status) && job.status !== "staged"
+    job && activeStatuses.has(job.status) && !(job.status === "staged" && job.operation === "download")
  );
+  const showJobDetails = hasActiveJob || canApply || Boolean(job?.status === "staged" && job.operation === "apply");

  // Compute current pipeline step index (0: check, 1: download, 2: verify/stage, 3: apply/restart)
  const currentStep = useMemo(() => {
@@ -545,7 +624,7 @@ export default function UpdatePage({
    if (!job) return 0;
    if (job.status === "completed" || job.status === "staged") return 100;
    if (job.status === "downloading") {
-      if (!job.sizeBytes || !job.downloadedBytes) return 10;
+      if (!job.sizeBytes || !job.downloadedBytes) return 0;
      return Math.min(99, Math.max(1, Math.round((job.downloadedBytes / job.sizeBytes) * 100)));
    }
    if (job.status === "verifying") return 99;
@@ -576,7 +655,7 @@ export default function UpdatePage({
      subtitle="管理系统版本升级、更新包完整性校验与安全热重启"
      actions={
        <div className="tn-update-page-actions">
-          {hasActiveJob && (
+          {showJobDetails && (
            <Button
              theme="primary"
              variant="base"
@@ -647,10 +726,18 @@ export default function UpdatePage({
              <span className="tn-metric-label">当前运行版本</span>
              <div className="tn-metric-value">v{info.currentVersion}</div>
              <div className="tn-metric-foot">
-                {latest?.isNewer ? (
-                  <Tag theme="primary" size="small">可更新至 v{latest.version}</Tag>
-                ) : (
+                {releaseState === "checking" ? (
+                  <Tag theme="default" size="small">正在检查更新</Tag>
+                ) : releaseState === "unverified" ? (
+                  <Tag theme="default" size="small">尚未检查更新</Tag>
+                ) : releaseState === "available" ? (
+                  <Tag theme="primary" size="small">可更新至 v{latest?.version}</Tag>
+                ) : releaseState === "up-to-date" ? (
                  <Tag theme="success" size="small">已是最新版本</Tag>
+                ) : releaseState === "blocked" ? (
+                  <Tag theme="warning" size="small">发现新版本，但暂不可更新</Tag>
+                ) : (
+                  <Tag theme="default" size="small">暂未获取发布信息</Tag>
                )}
              </div>
            </Surface>
@@ -689,8 +776,8 @@ export default function UpdatePage({
          <Surface className="tn-ascii-release-container">
            <div className="tn-ascii-release-head">
              <h3 className="tn-ascii-release-title">发布版本详情</h3>
-              <Tag theme={latest.isNewer ? "primary" : "success"} variant="light-outline">
-                {latest.isNewer ? "发现新版本" : "已是最新版本"}
+              <Tag theme={releaseState === "available" ? "primary" : releaseState === "up-to-date" ? "success" : releaseState === "blocked" ? "warning" : "default"} variant="light-outline">
+                {releaseState === "available" ? "发现新版本" : releaseState === "up-to-date" ? "已是最新版本" : releaseState === "blocked" ? "暂不可安全更新" : "尚未检查"}
              </Tag>
            </div>

@@ -726,7 +813,7 @@ export default function UpdatePage({
              </div>
              <div className="tn-ascii-info-item">
                <span className="tn-ascii-info-label">下载策略:</span>
-                <span className="tn-ascii-info-val">应用内流式直连 (零调度等待)</span>
+                <span className="tn-ascii-info-val">系统更新服务接管</span>
              </div>
            </div>

@@ -742,7 +829,7 @@ export default function UpdatePage({
                  disabled={actionBusy}
                  icon={<Download size={16} />}
                >
-                  立即升级至 v{latest.version}
+                  下载更新包
                </Button>
              )}
              {canApply && (
@@ -753,7 +840,7 @@ export default function UpdatePage({
                  disabled={actionBusy}
                  icon={<Zap size={16} />}
                >
-                  更新包已就绪，立即应用 (v{latest.version})
+                  立即应用并重启 v{latest.version}
                </Button>
              )}
              {hasActiveJob && (
@@ -766,9 +853,14 @@ export default function UpdatePage({
                  查看当前升级进度
                </Button>
              )}
-              {!latest.isNewer && !hasActiveJob && (
+              {releaseState === "blocked" && !hasActiveJob && !canApply && (
+                <Button theme="default" variant="outline" size="large" onClick={() => void check()} loading={checking} disabled={checking} icon={<RefreshCw size={15} />}>
+                  重新检查
+                </Button>
+              )}
+              {releaseState === "up-to-date" && !hasActiveJob && !canApply && (
                <Button theme="default" variant="outline" size="large" onClick={() => void check()} icon={<RefreshCw size={15} />}>
-                  检查新版本
+                  重新检查
                </Button>
              )}
            </div>
@@ -776,10 +868,10 @@ export default function UpdatePage({
        ) : (
          <Surface className="tn-empty-surface">
            <div className="tn-empty-content">
-              <CheckCircle2 size={32} className="text-success" />
-              <p>暂无待更新的版本信息，当前系统已是最新状态。</p>
-              <Button variant="outline" onClick={() => void check()} icon={<RefreshCw size={15} />}>
-                检查新版本
+              {releaseState === "unverified" || releaseState === "checking" ? <RefreshCw size={32} className={releaseState === "checking" ? "tn-spin" : "text-secondary"} /> : <AlertCircle size={32} className="text-warning" />}
+              <p>{releaseState === "unverified" || releaseState === "checking" ? "尚未完成版本检查，请先获取官方发布信息。" : "暂时没有可用的发布信息，请稍后重新检查。"}</p>
+              <Button variant="outline" onClick={() => void check()} loading={checking} disabled={checking} icon={<RefreshCw size={15} />}>
+                {releaseState === "checking" ? "正在检查" : "检查新版本"}
              </Button>
            </div>
          </Surface>
@@ -788,7 +880,7 @@ export default function UpdatePage({
        {latest && notes && (
            <Surface className="tn-ascii-notes-container">
              <div className="tn-ascii-notes-head">
-                <h3 className="tn-ascii-notes-title">本次版本更新说明</h3>
+              <h3 className="tn-ascii-notes-title">发布说明</h3>
              </div>
              <div className="tn-ascii-notes-body">
                <MarkdownNotes value={notes} />
@@ -813,7 +905,7 @@ export default function UpdatePage({
      {/* Unified Single Upgrade Modal (800px width on desktop) */}
      <Dialog
        visible={showUpgradeModal}
-        header={`系统升级控制台 · v${latest?.version || ""}`}
+        header={`系统升级控制台 · v${latest?.version || job?.version || ""}`}
        className="tn-dialog-large"
        width="820px"
        footer={null}
@@ -945,7 +1037,7 @@ export default function UpdatePage({
          )}

          {/* 场景 C: 校验通过准备就绪 (staged) (Exact ASCII) */}
-          {job?.status === "staged" && (
+          {job?.status === "staged" && job.operation === "download" && canApply && (
            <div className="tn-modal-card-box">
              <div className="tn-modal-card-title" style={{ color: "#2f7d5c", display: "flex", alignItems: "center", gap: 8 }}>
                <CheckCircle2 size={18} />
@@ -973,6 +1065,36 @@ export default function UpdatePage({
            </div>
          )}

+          {/* A staged archive can become obsolete when the host or release
+              metadata changes while this page is open. Keep the state visible
+              but remove the apply action; the server will reconcile it on the
+              next status request and the operator can perform a fresh check. */}
+          {job?.status === "staged" && job.operation === "download" && !canApply && (
+            <div className="tn-modal-card-box">
+              <div className="tn-modal-card-title">暂存更新已失效</div>
+              <p className="text-secondary" style={{ fontSize: "13px", margin: "0 0 16px", lineHeight: 1.6 }}>
+                这个更新包已不是当前可安全应用的版本，系统不会重复应用。请重新检查更新以获取最新发布信息。
+              </p>
+              <div className="tn-modal-actions-bar">
+                <Button variant="outline" onClick={() => void check()} loading={checking} disabled={checking}>
+                  重新检查
+                </Button>
+              </div>
+            </div>
+          )}
+
+          {job?.status === "staged" && job.operation === "apply" && (
+            <div className="tn-modal-card-box">
+              <div className="tn-modal-card-title">
+                <div style={{ marginBottom: 12 }}><BeamBar width={180} /></div>
+                应用请求已提交，正在等待更新服务接管
+              </div>
+              <p className="text-secondary" style={{ fontSize: "13px", margin: "0 0 16px", lineHeight: 1.6 }}>
+                系统正在准备备份与重启。页面会持续同步服务状态，请不要重复提交。
+              </p>
+            </div>
+          )}
+
          {/* 场景 D: 数据快照备份中或服务重启中 (backing_up / applying) (Exact ASCII) */}
          {(job?.status === "backing_up" || job?.status === "applying") && (
            <div className="tn-modal-card-box">
@@ -999,7 +1121,7 @@ export default function UpdatePage({
            <div className="tn-modal-card-box" style={{ background: "rgba(47, 125, 92, 0.04)", border: "1px solid rgba(47, 125, 92, 0.25)" }}>
              <div className="tn-modal-card-title" style={{ color: "#2f7d5c", display: "flex", alignItems: "center", gap: 8 }}>
                <CheckCircle2 size={22} />
-                恭喜！系统已成功平滑升级至 v{latest?.version || info.currentVersion}。
+                恭喜！系统已成功平滑升级至 v{latest?.version || info?.currentVersion || "当前版本"}。
              </div>
              <p style={{ fontSize: "13.5px", color: "var(--tn-text)", margin: "8px 0 16px" }}>
                服务健康检查已全部通过，所有账目数据与发票凭证均完好无损。请点击下方按钮完成控制台刷新。
@@ -1034,7 +1156,7 @@ export default function UpdatePage({
          )}

          {/* Footer close button */}
-          {job?.status !== "staged" && job?.status !== "completed" && !confirmReadyToDownload && (
+          {!(job?.status === "staged" && canApply) && job?.status !== "completed" && !confirmReadyToDownload && (
            <div className="tn-modal-footer-close">
              <Button variant="outline" onClick={() => setShowUpgradeModal(false)}>
                关闭窗口（后台继续运行）
@@ -1043,27 +1165,6 @@ export default function UpdatePage({
          )}
        </div>      </Dialog>

-      {/* Floating Mock Dock (Bottom-right, zero interference with main page) */}
-      {MOCK_PREVIEW_ENABLED && (
-        <aside className="tn-dev-mock-dock" aria-label="开发预览控制台">
-          <Terminal size={14} />
-          <strong>Mock:</strong>
-          <RadioGroup
-            variant="default-filled"
-            size="small"
-            value={mockScenario}
-            onChange={(value) => handleScenarioChange(value as "live" | MockScenario)}
-          >
-            <Radio.Button value="live">真实</Radio.Button>
-            {mockCatalog &&
-              Object.entries(mockCatalog).map(([key, item]) => (
-                <Radio.Button key={key} value={key}>
-                  {item.title.split("（")[0]}
-                </Radio.Button>
-              ))}
-          </RadioGroup>
-        </aside>
-      )}
    </Page>
  );
 }
@@ -1,283 +0,0 @@
-export type MockScenario =
-  | "latest"          // 已是最新
-  | "available"       // 发现新版本（待下载）
-  | "downloading_30"  // 下载中 30%
-  | "downloading_85"  // 下载中 85% + 高速
-  | "staged"          // 下载完成已校验，待立即更新
-  | "backing_up"      // 正在备份数据
-  | "applying"        // 正在原子切换并重启中（倒计时）
-  | "completed"       // 更新完成
-  | "failed_verify"   // 完整性校验失败
-  | "disabled";       // 手动模式未配置源
-
-export interface MockUpdateState {
-  info: any;
-  title: string;
-  description: string;
-}
-
-export const MOCK_SCENARIOS: Record<MockScenario, MockUpdateState> = {
-  latest: {
-    title: "版本健康（已是最新）",
-    description: "展示当前运行版本已是最新，各项指标正常，无待处理任务",
-    info: {
-      configured: true,
-      strategy: "systemd",
-      currentVersion: "1.1.22",
-      platform: { target: "x64/glibc", os: "linux", arch: "x64" },
-      checkedAt: Date.now() - 600_000,
-      latest: {
-        version: "1.1.22",
-        tagName: "v1.1.22",
-        releaseName: "v1.1.22 稳定版",
-        publishedAt: new Date(Date.now() - 3600_000 * 24).toISOString(),
-        compatible: true,
-        integrityReady: true,
-        signatureReady: true,
-        isNewer: false,
-        assetName: "tallynote-1.1.22-linux-x64-glibc.tar.gz",
-        assetSize: 120540160,
-        notes: "### TallyNote 1.1.22\n\n- 优化反向代理下登录兼容性\n- 增强安全审计与防重放机制\n- 前端组件性能深度优化",
-      },
-      job: null,
-    },
-  },
-  available: {
-    title: "发现新版本（待下载）",
-    description: "检查到官方发布了更高版本，显示更新日志与文件校验信息，可点击下载",
-    info: {
-      configured: true,
-      strategy: "systemd",
-      currentVersion: "1.1.22",
-      platform: { target: "x64/glibc", os: "linux", arch: "x64" },
-      checkedAt: Date.now() - 60_000,
-      latest: {
-        version: "1.1.23",
-        tagName: "v1.1.23",
-        releaseName: "v1.1.23 重大更新",
-        publishedAt: new Date(Date.now() - 1800_000).toISOString(),
-        compatible: true,
-        integrityReady: true,
-        signatureReady: true,
-        isNewer: true,
-        assetName: "tallynote-1.1.23-linux-x64-glibc.tar.gz",
-        assetSize: 121000000,
-        notes: "### TallyNote 1.1.23\n\n- 【新功能】系统更新中心全面重构，支持动态速率流光进度条与平滑重启倒计时\n- 【交互】优化抽屉展开动效与手机端自适应导航\n- 【安全】发布包支持双重 Ed25519 签名与 SHA-256 清单交叉校验",
-      },
-      job: null,
-    },
-  },
-  downloading_30: {
-    title: "下载更新中（进度 38%）",
-    description: "展示真实下载速率、已下载字节数与动态流光进度条",
-    info: {
-      configured: true,
-      strategy: "systemd",
-      currentVersion: "1.1.22",
-      platform: { target: "x64/glibc", os: "linux", arch: "x64" },
-      checkedAt: Date.now() - 120_000,
-      latest: {
-        version: "1.1.23",
-        tagName: "v1.1.23",
-        compatible: true,
-        integrityReady: true,
-        signatureReady: true,
-        isNewer: true,
-        assetName: "tallynote-1.1.23-linux-x64-glibc.tar.gz",
-        assetSize: 121000000,
-      },
-      job: {
-        id: "mock-job-001",
-        operation: "download",
-        status: "downloading",
-        version: "1.1.23",
-        platform: "x64/glibc",
-        assetName: "tallynote-1.1.23-linux-x64-glibc.tar.gz",
-        sizeBytes: 121000000,
-        downloadedBytes: 46200000,
-        downloadStartedAt: Date.now() - 10000,
-        downloadSpeedBps: 8800000, // 8.4 MB/s
-        createdAt: Date.now() - 10000,
-        updatedAt: Date.now(),
-      },
-    },
-  },
-  downloading_85: {
-    title: "下载冲刺中（进度 88%）",
-    description: "高速冲刺状态，即将触发 SHA-256 校验",
-    info: {
-      configured: true,
-      strategy: "systemd",
-      currentVersion: "1.1.22",
-      platform: { target: "x64/glibc", os: "linux", arch: "x64" },
-      checkedAt: Date.now() - 120_000,
-      latest: {
-        version: "1.1.23",
-        tagName: "v1.1.23",
-        compatible: true,
-        integrityReady: true,
-        signatureReady: true,
-        isNewer: true,
-        assetName: "tallynote-1.1.23-linux-x64-glibc.tar.gz",
-        assetSize: 121000000,
-      },
-      job: {
-        id: "mock-job-002",
-        operation: "download",
-        status: "downloading",
-        version: "1.1.23",
-        platform: "x64/glibc",
-        assetName: "tallynote-1.1.23-linux-x64-glibc.tar.gz",
-        sizeBytes: 121000000,
-        downloadedBytes: 106480000,
-        downloadStartedAt: Date.now() - 15000,
-        downloadSpeedBps: 12500000, // 11.9 MB/s
-        createdAt: Date.now() - 15000,
-        updatedAt: Date.now(),
-      },
-    },
-  },
-  staged: {
-    title: "下载完成（待立即应用）",
-    description: "更新包与签名均已校验就绪，随时可以安全点击【立即更新】",
-    info: {
-      configured: true,
-      strategy: "systemd",
-      currentVersion: "1.1.22",
-      platform: { target: "x64/glibc", os: "linux", arch: "x64" },
-      checkedAt: Date.now() - 120_000,
-      latest: {
-        version: "1.1.23",
-        tagName: "v1.1.23",
-        compatible: true,
-        integrityReady: true,
-        signatureReady: true,
-        isNewer: true,
-        assetName: "tallynote-1.1.23-linux-x64-glibc.tar.gz",
-        assetSize: 121000000,
-        notes: "### TallyNote 1.1.23\n\n- 更新包已完整解压检验通过，具备升级条件。",
-      },
-      job: {
-        id: "mock-job-003",
-        operation: "download",
-        status: "staged",
-        version: "1.1.23",
-        platform: "x64/glibc",
-        assetName: "tallynote-1.1.23-linux-x64-glibc.tar.gz",
-        sizeBytes: 121000000,
-        downloadedBytes: 121000000,
-        createdAt: Date.now() - 60000,
-        updatedAt: Date.now() - 5000,
-      },
-    },
-  },
-  backing_up: {
-    title: "数据备份中（更新保护）",
-    description: "正在为系统数据生成安全快照备份",
-    info: {
-      configured: true,
-      strategy: "systemd",
-      currentVersion: "1.1.22",
-      platform: { target: "x64/glibc", os: "linux", arch: "x64" },
-      checkedAt: Date.now() - 120_000,
-      latest: { version: "1.1.23", tagName: "v1.1.23", compatible: true, integrityReady: true, signatureReady: true, isNewer: true },
-      job: {
-        id: "mock-job-004",
-        operation: "apply",
-        status: "backing_up",
-        version: "1.1.23",
-        platform: "x64/glibc",
-        createdAt: Date.now() - 20000,
-        updatedAt: Date.now() - 2000,
-      },
-    },
-  },
-  applying: {
-    title: "服务平滑重启中（倒计时中）",
-    description: "已安全切换版本，服务正在热重启并检验状态",
-    info: {
-      configured: true,
-      strategy: "systemd",
-      currentVersion: "1.1.22",
-      platform: { target: "x64/glibc", os: "linux", arch: "x64" },
-      checkedAt: Date.now() - 120_000,
-      latest: { version: "1.1.23", tagName: "v1.1.23", compatible: true, integrityReady: true, signatureReady: true, isNewer: true },
-      job: {
-        id: "mock-job-005",
-        operation: "apply",
-        status: "applying",
-        version: "1.1.23",
-        platform: "x64/glibc",
-        applyQueuedAt: Date.now() - 12000,
-        restartWindowSeconds: 30,
-        restartDeadline: Date.now() + 18000,
-        createdAt: Date.now() - 25000,
-        updatedAt: Date.now() - 2000,
-      },
-    },
-  },
-  completed: {
-    title: "更新成功完成",
-    description: "新版本健康检查通过，已平滑无感升级至最新",
-    info: {
-      configured: true,
-      strategy: "systemd",
-      currentVersion: "1.1.23",
-      platform: { target: "x64/glibc", os: "linux", arch: "x64" },
-      checkedAt: Date.now() - 30_000,
-      latest: { version: "1.1.23", tagName: "v1.1.23", compatible: true, integrityReady: true, signatureReady: true, isNewer: false },
-      job: {
-        id: "mock-job-006",
-        operation: "apply",
-        status: "completed",
-        version: "1.1.23",
-        platform: "x64/glibc",
-        completedAt: Date.now() - 10000,
-        createdAt: Date.now() - 45000,
-        updatedAt: Date.now() - 10000,
-      },
-    },
-  },
-  failed_verify: {
-    title: "更新失败状态（安全拦截）",
-    description: "模拟签名不匹配或发布包篡改时的安全拦截展示与错误提示",
-    info: {
-      configured: true,
-      strategy: "systemd",
-      currentVersion: "1.1.22",
-      platform: { target: "x64/glibc", os: "linux", arch: "x64" },
-      checkedAt: Date.now() - 120_000,
-      latest: {
-        version: "1.1.23",
-        tagName: "v1.1.23",
-        compatible: true,
-        integrityReady: false,
-        signatureReady: false,
-        isNewer: true,
-      },
-      job: {
-        id: "mock-job-007",
-        operation: "download",
-        status: "failed",
-        version: "1.1.23",
-        platform: "x64/glibc",
-        errorMessage: "发布包 SHA-256 校验与清单不一致，系统已自动阻断并保护原有数据。",
-        createdAt: Date.now() - 30000,
-        updatedAt: Date.now() - 5000,
-      },
-    },
-  },
-  disabled: {
-    title: "手动源码模式",
-    description: "未启用后台守护时的更新提示与引导说明",
-    info: {
-      configured: false,
-      strategy: "disabled",
-      currentVersion: "1.1.22",
-      platform: { target: "macOS/darwin", os: "darwin", arch: "arm64" },
-      checkedAt: Date.now() - 3600_000,
-      latest: null,
-      job: null,
-    },
-  },
-};
@@ -115,14 +115,14 @@ input:focus-visible, textarea:focus-visible, select:focus-visible {
  box-sizing: border-box !important;
  transition: all 0.22s cubic-bezier(0.16, 1, 0.3, 1) !important;
 }
-.t-notification__show--top-right {
-  top: 76px !important;
+.t-notification__show--bottom-right {
+  bottom: 24px !important;
  right: 24px !important;
  z-index: 6000 !important;
 }
@media (max-width: 768px) {
-  .t-notification__show--top-right {
-    top: 16px !important;
+  .t-notification__show--bottom-right {
+    bottom: 16px !important;
    right: 16px !important;
    left: 16px !important;
    width: auto !important;
@@ -802,61 +802,6 @@ input:focus-visible, textarea:focus-visible, select:focus-visible {
   TallyNote Update Center (Redesigned UI & Interactive Styles)
   ========================================================================== */

-/* Mock Console Controller */
-.tn-mock-console {
-  margin-bottom: 16px;
-  padding: 14px 18px;
-  background: #f8fbff;
-  border: 1px dashed var(--td-brand-color-3);
-  border-radius: 4px;
-}
-.tn-mock-console-header {
-  display: flex;
-  align-items: center;
-  justify-content: space-between;
-  flex-wrap: wrap;
-  gap: 8px;
-  margin-bottom: 12px;
-}
-.tn-mock-console-title {
-  display: flex;
-  align-items: center;
-  gap: 8px;
-  font-size: 13px;
-  color: var(--tn-navy-900);
-}
-.tn-mock-console-tip {
-  font-size: 12px;
-  color: var(--tn-text-secondary);
-}
-.tn-mock-scenario-chips {
-  display: flex;
-  flex-wrap: wrap;
-  gap: 8px;
-}
-.tn-scenario-chip {
-  padding: 5px 11px;
-  font-size: 12px;
-  border: 1px solid var(--tn-border);
-  border-radius: 3px;
-  background: #ffffff;
-  color: var(--tn-text-secondary);
-  cursor: pointer;
-  transition: all 0.16s ease;
-}
-.tn-scenario-chip:hover {
-  border-color: var(--td-brand-color-4);
-  color: var(--td-brand-color);
-  background: var(--td-brand-color-1);
-}
-.tn-scenario-chip.active {
-  background: var(--td-brand-color);
-  border-color: var(--td-brand-color);
-  color: #ffffff;
-  font-weight: 600;
-  box-shadow: 0 2px 6px rgba(23, 92, 211, 0.2);
-}
-
 /* Update Page Actions */
 .tn-update-page-actions {
  display: flex;
@@ -1272,10 +1217,6 @@ input:focus-visible, textarea:focus-visible, select:focus-visible {
  .tn-update-metrics-grid {
    grid-template-columns: 1fr;
  }
-  .tn-mock-console-header {
-    flex-direction: column;
-    align-items: flex-start;
-  }
  .tn-release-header {
    flex-direction: column;
  }
@@ -1651,23 +1592,6 @@ input:focus-visible, textarea:focus-visible, select:focus-visible {
  gap: 6px;
 }

-/* Compact Floating Mock Switcher at bottom-right instead of giant top banner */
-.tn-dev-mock-dock {
-  position: fixed;
-  bottom: 16px;
-  right: 16px;
-  z-index: 999;
-  background: #ffffff;
-  border: 1px solid var(--td-brand-color);
-  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.15);
-  border-radius: 4px;
-  padding: 8px 12px;
-  display: flex;
-  align-items: center;
-  gap: 10px;
-  font-size: 12px;
-}
-

 /* ============================================================
   方案二：平滑极光光流条 (Beam Bar / Shimmer) 全局动效规范
Author	SHA1	Message	Date
Qiufeng	a070ad0434	fix: move notifications to bottom right TallyNote release / linux-x64 (push) Successful in 6m55s Details	2026-09-05 17:06:23 +08:00
Qiufeng	3ab3e5e180	fix: sync update status after checks TallyNote release / linux-x64 (push) Successful in 6m54s Details	2026-09-05 16:41:18 +08:00
Qiufeng	6c96cddd4e	fix: reconcile stale staged updates TallyNote release / linux-x64 (push) Successful in 6m50s Details	2026-09-05 16:31:53 +08:00
Qiufeng	efbd0e0d87	fix: make update center state consistent TallyNote release / linux-x64 (push) Successful in 6m53s Details	2026-09-05 16:26:34 +08:00
Qiufeng	ed0b492461	fix: make online updates recoverable TallyNote release / linux-x64 (push) Successful in 7m45s Details	2026-09-05 14:56:15 +08:00
Qiufeng	a080f531cd	release: 1.2.3 TallyNote release / linux-x64 (push) Successful in 6m47s Details	2026-09-05 10:31:29 +08:00
Qiufeng	1e87f25c2b	fix: remove update page mock controls	2026-09-05 10:22:25 +08:00