Add BINANCE_ENABLED and STRIKE_ENABLED env flags

Skip live WebSocket/API connections when set to false.
Defaults to true so Docker keeps fetching.

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

resources/system.edn

@@ -52,7 +52,8 @@
 
  :ws/binance
  {:query-fn #ig/ref :db.sql/query-fn
-  :uri      "wss://stream.binance.com:9443/ws/btcusdt@trade"}
+  :uri      "wss://stream.binance.com:9443/ws/btcusdt@trade"
+  :enabled? #or [#env BINANCE_ENABLED "true"]}
 
  :kraken/ohlc
  {:query-fn #ig/ref :db.sql/query-fn}
@@ -67,4 +68,5 @@
  :strike/ticker
  {:query-fn        #ig/ref :db.sql/query-fn
   :api-key         #env STRIKE_API_KEY
-  :sats-eur-amount #or [#env SATS_EUR_AMOUNT "55"]}}
+  :sats-eur-amount #or [#env SATS_EUR_AMOUNT "55"]
+  :enabled?        #or [#env STRIKE_ENABLED "true"]}}

src/clj/pmagnus/btcdata/strike/ticker.clj

@@ -136,8 +136,13 @@
             (log/error e "Strike poll failed")))))))
 
 (defmethod ig/init-key :strike/ticker
-  [_ {:keys [query-fn api-key sats-eur-amount]}]
-  (log/info "Starting Strike ticker poller")
+  [_ {:keys [query-fn api-key sats-eur-amount enabled?] :or {enabled? "true"}}]
+  (if-not (= enabled? "true")
+    (do (log/info "Strike ticker disabled")
+        {:running?     (atom false)
+         :future       nil
+         :latest-rates (atom nil)})
+    (do (log/info "Starting Strike ticker poller")
         (let [client       (HttpClient/newHttpClient)
               running?     (atom true)
               latest-rates (atom nil)
@@ -145,10 +150,10 @@
               fut          (start-poll-loop! client api-key query-fn running? latest-rates sats-eur-amount fee-cache)]
           {:running?     running?
            :future       fut
-     :latest-rates latest-rates}))
+           :latest-rates latest-rates}))))
 
 (defmethod ig/halt-key! :strike/ticker
   [_ {:keys [running? future]}]
   (log/info "Stopping Strike ticker poller")
   (reset! running? false)
-  (future-cancel future))
+  (when future (future-cancel future)))

src/clj/pmagnus/btcdata/ws/binance.clj

@@ -71,8 +71,12 @@
         (.join))))
 
 (defmethod ig/init-key :ws/binance
-  [_ {:keys [query-fn uri]}]
-  (log/info "Starting Binance WebSocket listener:" uri)
+  [_ {:keys [query-fn uri enabled?] :or {enabled? "true"}}]
+  (if-not (= enabled? "true")
+    (do (log/info "Binance WebSocket disabled")
+        {:state        (atom {:running? false})
+         :latest-price (atom nil)})
+    (do (log/info "Starting Binance WebSocket listener:" uri)
         (let [latest-price (atom nil)
               state        (atom {:running?   true
                                   :last-write 0
@@ -81,7 +85,7 @@
               ws           (connect! uri query-fn state latest-price)]
           (swap! state assoc :ws ws)
           {:state        state
-     :latest-price latest-price}))
+           :latest-price latest-price}))))
 
 (defmethod ig/halt-key! :ws/binance
   [_ {:keys [state]}]