bank: default auto-confirm poll interval to 2 seconds.

Faster explorer pool confirmation for demo withdrawals.

scripts/taler-bank/README.md

@@ -11,6 +11,7 @@ Container: **`taler-hacktivism-bank`** (libeufin-bank, GOA, **no IBAN**).
 | `landing-stats-install.sh` | host only | root/podman — copies + runs + optional cron |
 | `demo-withdraw-api.py` | `/usr/local/bin/` | root — loopback **:19096** |
 | `install-demo-withdraw-api.sh` | host only | installs API + nginx + auto-confirm |
+| `maintenance/raise-debit-limits.sh` | host or bank ctr | raise all accounts’ `debit_threshold` (dry-run; `--no-dry`) |
 | `auto-confirm-withdrawals.sh` | `/usr/local/bin/` | root — **explorer-only** confirm loop |
 | `refresh-demo-withdraw.sh` | `/usr/local/bin/` | refresh static `withdraw.uri` |
 | `credit-account.sh` | host/ops | admin → user credit |
@@ -60,12 +61,20 @@ Requires **python3** in the bank container. Env: `BANK_URL`, `BANK_USER`/`BANK_P
 
 ```bash
 # loop inside container — refuses non-explorer unless ALLOW_NON_EXPLORER=1
-auto-confirm-withdrawals.sh --loop 4
+auto-confirm-withdrawals.sh --loop 2
 ```
 
 Only confirms withdrawals owned by **`explorer`** when status is `selected`
 (community demo path). Does not confirm arbitrary customer withdraws.
 
+**Stable ops (via `koopa-external` if LAN `koopa` is down):**
+
+- One process only (`flock` on `/var/run/auto-confirm-withdrawals.lock`)
+- `QUIET=1` + summary `tick checked=… selected=…` each loop
+- Watch list capped (`WATCH_MAX=80`, prune of bloated `withdraw-watch.ids`)
+- Status via `taler-integration/withdrawal-operation/{id}`
+- Reinstall: `./install-demo-withdraw-api.sh` on host with podman access to `taler-hacktivism-bank`
+
 ## Config
 
 See `configs/taler-hacktivism-bank/` and `configs/bank-landing/`.