Birth Hestia in kernel_main.c -- FABRIC-3.6.md task 1.4

Added a birth block immediately after Hermes's own, same shape:
S" Hestia" BIRTH followed by a registry-lookup confirmation. Fleet is
now Hera/Hermes/Artemis/Hestia, four VMs, through Phase 1-3
(FABRIC-3.5.md SXXXIV.4) until Phase 4 retires Hermes.

Three-arch boot clean: amd64/aarch64/riscv64 all reach [zuse@Hera] ok>,
zero UNKNOWN WORD. Registry shows all four (BIRTH: Hermes live, BIRTH:
Hestia live, PARITY:BIRTH for all three non-Hera VMs). Hestia's
dict_hash identical across all three architectures (0x31cab513929eea89).
Hera/Hermes hashes unchanged from task 1.3; Artemis's vm_id shifted
(now the 4th birth instead of 3rd -- sequence-derived, not identity-
derived, so expected) but its dict_hash is unchanged and still
identical across arches. No compiler warnings.

Noted, not a regression: Hestia's birth log shows the same
"( Unterminated comment" HADES warning Artemis's birth has shown since
task 0.0's first baseline.

Authorized by Captain Bob ("yes").

Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>

src/starkernel/kernel_main.c

@@ -873,6 +873,24 @@ static void kernel_main_deep(BootInfo *boot_info) {
         }
     }
 
+    /* Hestia is the third reconstituted Tripod leg (Hera/Artemis/Hestia,
+     * FABRIC-3.5.md SII/SIV) -- born here, alongside Hermes, per
+     * FABRIC-3.6.md task 1.4. Hermes stays live too (SXXXIV.4): the
+     * fleet is Hera/Hermes/Artemis/Hestia through Phase 1-3, four VMs,
+     * not three, until Phase 4's Category B strip retires Hermes. Same
+     * birth-by-name-then-registry-check shape as Hermes/Artemis above. */
+    console_println("Startup: birthing Hestia (fleet foundation)...");
+    vm_interpret(mama, "S\" Hestia\" BIRTH");
+    {
+        VMRegistryEntry entry;
+        if (capsule_vm_find_by_name_nocase("Hestia", &entry) == 0 &&
+            entry.state == VM_STATE_LIVE) {
+            console_println("Startup: Hestia live");
+        } else {
+            console_println("Startup: Hestia birth registry lookup FAILED");
+        }
+    }
+
     /* Artemis is now a permanent fleet-foundation VM, not self-test
      * scaffolding -- same reasoning as Hermes's own birth just above
      * (FABRIC-2.md D.7). Previously born, exercised, and KILLed by item