fix: normalize existing Syncthing route paths

docs/deployment-and-usage.md

@@ -213,7 +213,7 @@ cache/archive routes according to policy.
 ```yaml
 services:
   archive-client:
-    image: sodium/archive-clients:v0.1.2
+    image: sodium/archive-clients:v0.1.3
     user: "1001:1001"
     restart: unless-stopped
     command: ["archive-client", "--config", "/etc/archive-control/client.toml"]

docs/service-apis.md

@@ -29,6 +29,10 @@ The adapter accounts for terminology/behavior changes such as paused versus
 stopped states. It does not mutate qBittorrent preferences, categories, tags,
 limits, queueing defaults, or global save-path behavior.
 
+Syncthing route validation normalizes both absolute and `~/` folder-path
+spellings under the configured sync root before comparing an existing folder;
+an equivalent pre-existing pair is adopted without rewriting it.
+
 ### Inventory normalization
 
 For each torrent the client derives canonical v1/v2 identity from reliable API