Tune fingerprint feedback defaults

docs/gnome-fingerprint-feedback-deploy.md

@@ -19,7 +19,7 @@ sudo ./tools/gnome_fprint_feedback_setup.sh
 Custom tuning:
 
 ```bash
-sudo ./tools/gnome_fprint_feedback_setup.sh --max-tries 2 --timeout 6
+sudo ./tools/gnome_fprint_feedback_setup.sh --max-tries 3 --timeout 20
 ```
 
 ## Validate
@@ -34,7 +34,7 @@ grep pam_fprintd /etc/pam.d/fingerprint-auth
 Expected effective line:
 
 ```text
-pam_fprintd.so max-tries=2 timeout=6
+pam_fprintd.so max-tries=3 timeout=20
 ```
 
 ## Rollback
@@ -54,6 +54,8 @@ sudo ./tools/gnome_fprint_feedback_rollback.sh --remove-profile
 
 ## Notes
 - Scripts must be run as root.
+- The defaults are intentionally long enough for GNOME unlock after suspend;
+  too-short timeouts can make fingerprint unlock appear unavailable.
 - Setup stores previous `authselect current --raw` in:
   - `/etc/authselect/custom/local-fprint-feedback/.previous-authselect-raw`
 - If no saved state exists, rollback falls back to: