Assemblies: daps fails to detect undefined entities in tasks, references, concepts or glues

[taroth21]

Problem description

If I misspell an entity in the assembly file (*.asm), daps will detect the undefined entity and return an error message:

✔ /local/git/GH/doc-modular [taroth/test_entity L|✚ 2] 
17:19 $ daps -d DC-minimal-vm validate
/local/git/GH/doc-modular/articles/sle-minimal-vm.asm.xml:54: parser error : Entity 'taroth' not defined
              Complete revision incorporation feedback and learnings by &taroth;
                                                                               ^
Fatal error:
/local/git/GH/doc-modular/build/.assembly/minimal-vm.xml:
    CRITICAL: Entity 'taroth' not defined (line 16 column 81)
                                                                               ^
Fatal error:
/local/git/GH/doc-modular/build/.assembly/minimal-vm.xml:
    CRITICAL: Entity 'taroth' not defined (line 16 column 81)

However, if an entity is misspelled in a reference, concepts, task or glue topic, daps does not detect the undeclared entity and will (erroneously) report: Document is valid.

Expected behavior

daps should detect missing entity declarations anywhere within snippets used for the assembly.