feat: implement job state, queue state, and worker recovery in WAL replay

WAL payloads:
- Job state transitions (START/FINISH/FAIL/STOP/RESUME/UPDATE etc):
  wal_jobstate_t {uint64_t jobid, uint32_t state} — restores exact state flags
- Queue state (QUEUE_CTRL): wal_queuehdr_t {uint32_t status} + name string —
  re-applies admin open/close/active/inactive after config queues are built
- Worker CTRL: existing [uint32_t detail][capnp xce_worker_t] unchanged

New recovery functions:
- restore_job_state(c, jobid, state): looks up job, overwrites state flags
- restore_queue_state(c, name, status): looks up queue, overwrites status

apply_wal_entry: dispatches all WAL types including job state and queue
test_repl_apply.c: weak stubs for restore_job_state/restore_queue_state
  so unit test binary links without job.c/queue.c

src/include/wal_types.h

@@ -6,6 +6,23 @@
 #include <stdint.h>
 #include "config.h"
 
+/* ── WAL payload helper structs ────────────────────────────────────────────
+ * These are the binary formats embedded after wal_entry_hdr_t for each type.
+ * All fields are native-endian (single-node WAL; replication uses capnp). */
+
+/* WAL_JOB_START / FINISH / FAIL / STOP / RESUME / UPDATE / CKPT / PREASON / RUSAGE */
+typedef struct {
+    uint64_t jobid;
+    uint32_t state;  /* xce_job state flags after this transition */
+    uint32_t _pad;
+} wal_jobstate_t;
+
+/* WAL_QUEUE_CTRL — queue name is a NUL-terminated string immediately after
+ * this header.  Total payload = sizeof(wal_queuehdr_t) + strlen(name)+1. */
+typedef struct {
+    uint32_t status; /* xce_queue status flags after this transition */
+} wal_queuehdr_t;
+
 /* ============================================================
  * WAL entry header — 40 bytes, 8-byte aligned (Part 2.2)
  * ============================================================ */