Block Definition command-line forms, block record data and dialog defaults

-BLOCK, -WBLOCK, -BEDIT, ATTSYNC, BASE and INSBASE follow the reference
prompts and messages; empty blocks; WBLOCK keeps object coordinates and
stores INSBASE; annotative and hyperlink data on the block record; block
preview images; remembered dialog choices; block aliases.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

src/app/commands/mod.rs

@@ -5,6 +5,7 @@ use iced::Task;
 use std::path::PathBuf;
 
 mod attdef;
+mod block_cmdline;
 mod blocks;
 mod blockvars;
 mod bvisibility;
@@ -306,6 +307,9 @@ impl OpenCADStudio {
         if let Some(t) = self.dispatch_bvisibility(cmd, i) {
             return Some(t);
         }
+        if let Some(t) = self.dispatch_block_cmdline(cmd, i) {
+            return Some(t);
+        }
         if let Some(t) = self.dispatch_blocks(cmd, i) {
             return Some(t);
         }
@@ -552,6 +556,8 @@ inventory::submit!(crate::command::CommandRegistration {
         "INSNAME",
         "ATTMAN",
         "BATTMAN",
+        "-BEDIT",
+        "INSBASE",
         // Drawing-content overview.
         "ADCENTER",
         "CONTENTBROWSER",