fix: restore elb build — import paths, morphology deps, C master declarations header

- Fix wrong ELP import paths in soul.el, elp-input.el, studio.el
  (../foundation/elp/src → ../foundation/el/elp/src)
- Add missing import "morphology.el" to all 29 language morphology modules
- Recompile all affected dist/*.c with correct cross-module declarations
- Add dist/elp-c-decls.h: C-level master forward declarations for ELP package
  (enables elb --force-include to resolve undeclared cross-module calls)

dist/neuron-api.c

@@ -14,6 +14,9 @@ el_val_t mem_forget(el_val_t node_id);
 el_val_t mem_consolidate(void);
 el_val_t mem_save(el_val_t path);
 el_val_t mem_load(el_val_t path);
+el_val_t mem_boot_count_get(void);
+el_val_t mem_boot_count_inc(void);
+el_val_t mem_emit_state_event(el_val_t trigger, el_val_t kind, el_val_t content);
 el_val_t api_json_escape(el_val_t s);
 el_val_t api_query_param(el_val_t path, el_val_t key);
 el_val_t api_query_int(el_val_t path, el_val_t key, el_val_t default_val);