Update CLI command from `region bulk` to `region def`

docs/cli_commands.md

@@ -756,9 +756,9 @@ This document provides an overview of CLI commands that can be sent to MeshCore
 
 ---
 
-#### Bulk-define region hierarchy (single line)
+#### Define region hierarchy (single line)
 **Usage:**
-- `region bulk <token> [<token> ...]`
+- `region def <token> [<token> ...]`
 
 **Parameters (tokens):** Space-separated. A logical **cursor** starts at the wildcard `*`.
 
@@ -771,26 +771,26 @@ This document provides an overview of CLI commands that can be sent to MeshCore
 
 **Note:** On error, the reply is a short `Err - ...` message; regions placed before the failure remain (same as a partial chain of `region put`).
 
-**Note:** Repeater serial accepts one line up to **160 characters** total; split very large trees across multiple `region bulk` commands.
+**Note:** Repeater serial accepts one line up to **160 characters** total; split very large trees across multiple `region def` commands.
 
-**Note:** `|` only splits once per token. `region bulk a|b|c|d` is **not** a flat-list shorthand — use `region bulk a|* b|* c|* d|*` for multiple children of `*`.
+**Note:** `|` only splits once per token. `region def a|b|c|d` is **not** a flat-list shorthand — use `region def a|* b|* c|* d|*` for multiple children of `*`.
 
 **Example — linear chain:**
 ```
-region bulk west pnw wa w-wa sea
+region def west pnw wa w-wa sea
 region save
 ```
 
 **Example — branched tree** (equivalent to `region put west` … `region put sw-wa wa`):
 ```
-region bulk west pnw or pdx|pnw wa sw-wa
+region def west pnw or pdx|pnw wa sw-wa
 region save
 ```
-Same with comma as jump delimiter: `region bulk west pnw or pdx,pnw wa sw-wa`
+Same with comma as jump delimiter: `region def west pnw or pdx,pnw wa sw-wa`
 
 **Example — flat list** (each region child of `*`):
 ```
-region bulk west|* pnw|* or|* pdx|* wa|* sw-wa
+region def west|* pnw|* or|* pdx|* wa|* sw-wa
 region save
 ```
 

src/helpers/CommonCLI.cpp

@@ -898,15 +898,15 @@ void CommonCLI::handleGetCmd(uint32_t sender_timestamp, char* command, char* rep
 void CommonCLI::handleRegionCmd(char* command, char* reply) {
   reply[0] = 0;
 
-  // `region bulk ...` — cursor-walk over space-separated tokens (must run before
+  // `region def ...` — cursor-walk over space-separated tokens (must run before
   // parseTextParts, which only keeps 4 segments and mutates the buffer).
   char* cmd = command;
   while (*cmd == ' ') cmd++;
-  if (strncmp(cmd, "region bulk", 11) == 0 && (cmd[11] == ' ' || cmd[11] == '\0')) {
-    char* payload = cmd + 11;
+  if (strncmp(cmd, "region def", 10) == 0 && (cmd[10] == ' ' || cmd[10] == '\0')) {
+    char* payload = cmd + 10;
     while (*payload == ' ') payload++;
     if (*payload == '\0') {
-      snprintf(reply, 160, "Err - empty bulk");
+      snprintf(reply, 160, "Err - empty def");
       return;
     }
     RegionEntry* cursor = &_region_map->getWildcard();