fix(inproc): move CHAIN_AT_START API level check to init

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

Author: jpnurmi

src/backends/sentry_backend_inproc.c

@@ -484,6 +484,17 @@ startup_inproc_backend(
         options ? sentry_options_get_handler_strategy(options) :
 #    endif
                 SENTRY_HANDLER_STRATEGY_DEFAULT;
+#    ifdef SENTRY_PLATFORM_ANDROID
+    // CHAIN_AT_START invokes the previous handler and expects to regain
+    // control. On Android API < 26, the old debuggerd daemon kills the
+    // crashing process via SIGKILL after the chained handler triggers
+    // it, so we fall back to DEFAULT which chains at the end instead.
+    if (g_backend_config.handler_strategy
+            == SENTRY_HANDLER_STRATEGY_CHAIN_AT_START
+        && android_get_device_api_level() < 26) {
+        g_backend_config.handler_strategy = SENTRY_HANDLER_STRATEGY_DEFAULT;
+    }
+#    endif
     if (backend) {
         backend->data = &g_backend_config;
     }
@@ -1551,20 +1562,9 @@ dispatch_ucontext(const sentry_ucontext_t *uctx,
 static void
 process_ucontext(const sentry_ucontext_t *uctx)
 {
-    sentry_handler_strategy_t strategy = g_backend_config.handler_strategy;
-#ifdef SENTRY_PLATFORM_ANDROID
-    // CHAIN_AT_START invokes the previous handler and expects to regain
-    // control. On Android API < 26, the old debuggerd daemon kills the
-    // crashing process via SIGKILL after the chained handler triggers
-    // it, so we fall back to DEFAULT which chains at the end instead.
-    if (strategy == SENTRY_HANDLER_STRATEGY_CHAIN_AT_START
-        && android_get_device_api_level() < 26) {
-        strategy = SENTRY_HANDLER_STRATEGY_DEFAULT;
-    }
-#endif
-
 #ifdef SENTRY_PLATFORM_LINUX
-    if (strategy == SENTRY_HANDLER_STRATEGY_CHAIN_AT_START
+    if (g_backend_config.handler_strategy
+            == SENTRY_HANDLER_STRATEGY_CHAIN_AT_START
         && uctx->signum != SIGABRT) {
         // SIGABRT is excluded: CLR/Mono never uses it for managed exception
         // translation. Chaining SIGABRT to a SIG_DFL previous handler calls
@@ -1700,7 +1700,8 @@ process_ucontext(const sentry_ucontext_t *uctx)
     sentry__atomic_store(&g_crash_handling_state, CRASH_STATE_DONE);
 
     sentry__leave_signal_handler();
-    if (strategy != SENTRY_HANDLER_STRATEGY_CHAIN_AT_START) {
+    if (g_backend_config.handler_strategy
+        != SENTRY_HANDLER_STRATEGY_CHAIN_AT_START) {
         invoke_signal_handler(
             uctx->signum, uctx->siginfo, (void *)uctx->user_context);
     }