Fix test client refactor: broken includes, typos, and structural bugs

- Rename include/lib.h to include/toastyfs.h, add -Iinclude to build
- Fix build.sh: replace deleted blob_client.c with random_client.c
- Fix src/client.c: wrong include (client_lib.h), add missing STEP_FETCH_CHUNK
  enum, add missing struct fields (bucket, key, blob_size, content_hash,
  error, file_size, phase_time), fix TRANSFER_WAITING->TRANSFER_PENDING,
  fix begin_transfers() wrong variable refs, fix reap->resp typo,
  fix resp.size check inversion, fix state->tfs in process_events,
  fix tfs->transfer->tfs->transfers, fix tfs->phase->tfs->step,
  fix function name typos in toastyfs_get_result, fix async_put->async_get
  in toastyfs_get, fix ReplyMessage->RequestMessage in async_delete,
  fix put_result/delete_result return types, fix wait_until_result,
  add leader_idx() and toastyfs_alloc(), add missing MessageHeader casts
- Fix src/random_client.c: randm_client.h typo, addrs[i]->addrs[num_addrs],
  use toastyfs_alloc() for opaque type, fix tfs->state->tfs refs
- Fix src/random_client.h: wrong include guard names
- Fix src/main.c: replace deleted client.h/blob_client.h with
  random_client.h, update all client spawn configs to use RandomClient

https://claude.ai/code/session_018MRQTdAZoBCXJZgdP4U6V6

src/random_client.c

@@ -3,11 +3,12 @@
 #endif
 
 #include <quakey.h>
+#include <toastyfs.h>
 #include <stdint.h>
 #include <assert.h>
 
 #include "server.h"
-#include "randm_client.h"
+#include "random_client.h"
 
 static uint64_t next_random_client_id = 100;
 
@@ -31,23 +32,27 @@ int random_client_init(void *state_, int argc, char **argv,
                 fprintf(stderr, "Node limit reached\n");
                 return -1;
             }
-            addrs[i] = argv[i];
+            addrs[num_addrs] = argv[i];
             num_addrs++;
         } else {
             // Ignore unknown options
         }
     }
 
-    ToastyFS *tfs = toastyfs_init(addrs, num_addrs);
-    if (tfs == NULL)
+    state->tfs = toastyfs_alloc();
+    if (state->tfs == NULL)
+        return -1;
+
+    uint64_t client_id = next_random_client_id++;
+    if (toastyfs_init(state->tfs, client_id, addrs, num_addrs) < 0)
         return -1;
 
     *timeout = 0;
     if (pcap < TCP_POLL_CAPACITY) {
-        fprintf(stderr, "Blob client :: Not enough poll capacity\n");
+        fprintf(stderr, "Random client :: Not enough poll capacity\n");
         return -1;
     }
-    *pnum = tcp_register_events(&state->tcp, ctxs, pdata);
+    *pnum = toastyfs_register_events(state->tfs, ctxs, pdata, pcap);
     return 0;
 }
 
@@ -90,7 +95,7 @@ int random_client_tick(void *state_, void **ctxs,
         break;
     }
 
-    *pnum = toastyfs_register_events(tfs, ctxs, pdata, pcap, timeout);
+    *pnum = toastyfs_register_events(state->tfs, ctxs, pdata, pcap);
     return 0;
 }