complete the example config and fix a misleading option in the app docs

Five options existed only in the README table, not in the file people copy.
match_top_k was listed as an app option although it is set on the Settings tab.

Author: skycryer

docs/example-config.yaml

@@ -27,6 +27,13 @@ faceid:
   # correct recognitions over 3 with no misassignments.
   match_top_k: 3
   max_faces_per_person: 40             # soft cap; the most redundant photo is set aside
+  trimmed_keep: 10                     # how many set-aside photos to keep per person (0 = delete)
+  dedupe_threshold: 0.65               # default sensitivity of the "remove duplicates" action
+  hires_enroll: true                   # fetch review-queue faces from the recording instead of
+                                       # the detect snapshot — typically twice the face size
+  ignore_threshold: 0.50               # similarity at which a face counts as ignored
+                                       # (defaults to match_threshold when unset)
+  ignore_learning: true                # learn new looks of ignored people as extra anchors
   min_face_px: 48                      # minimum face size in the snapshot (pixels)
   det_size: 640                        # detection input size (higher = better far faces, slower)
   max_attempts: 6                      # recognition attempts per Frigate event

faceid-addon/DOCS.md

@@ -37,11 +37,14 @@ Full documentation: https://github.com/SkyTechNerds/faceid
 | `dedupe_threshold` | default sensitivity for the Settings "Remove duplicates" action |
 | `hires_enroll` | fetch new review-queue faces from the recording instead of the detect snapshot (sharper references) |
 | `poll_interval` | seconds; >0 also polls Frigate's event API for events MQTT never announces (e.g. events created by an automation from a camera's own detection). 0 = off |
-| `match_top_k` | a match score is the mean of this many best-fitting reference photos. Higher resists a single lucky photo; lower helps people whose references cover many angles |
 | `backup_enabled` / `backup_hour` / `backup_keep` | optional built-in daily gallery backup |
 
 Thresholds and backup can also be changed live on the app's **Settings** tab; those
-edits are stored in the app's data volume and override these options.
+edits are stored in the app's data volume and override these options. The Settings tab
+additionally holds **"photos averaged per match"** (`match_top_k`) — a match score is the
+mean of that many best-fitting reference photos. Higher resists a single lucky photo;
+lower helps people whose references cover many different angles, since their own less
+similar photos otherwise drag the mean down.
 
 Face data (gallery, review queue) is stored in the app's data volume and survives
 updates. Uninstalling the app deletes it.