make the el-compiler runtime compile again

The loopback/API-key hardening carried in this file since 2026-07-15 called
el_http_request_authorized and el_http_send_401 from http_worker with no
forward declarations, so the calls were implicit and the later static
definitions conflicted. The file did not build. Two prototypes fix it.

Worth naming the pattern: uncommitted work is invisible to every check that
would have caught this. Three weeks of desktop security hardening was neither
committed nor compiling, and nothing reported either fact.

lang/el-compiler/runtime/el_runtime.c

@@ -1545,6 +1545,17 @@ typedef struct {
 #endif
 } HttpWorkerArg;
 
+/* Forward declarations for the loopback/API-key hardening helpers defined
+ * further down. Without these, http_worker's calls below were implicit
+ * declarations and the later `static` definitions conflicted with them — this
+ * file did not compile at all. (2026-08-08 self-review: the hardening work
+ * they belong to had been sitting uncommitted in the working tree since
+ * 2026-07-15 in exactly this non-building state, which is presumably why it
+ * was never committed. Adding the two prototypes is the whole fix.) */
+static int  el_http_request_authorized(const char* method, const char* path,
+                                       const char* hdr_block);
+static void el_http_send_401(int fd);
+
 static void* http_worker(void* arg) {
     HttpWorkerArg* a = (HttpWorkerArg*)arg;
 #ifdef _WIN32