feat: Enable new Process AoU Linkages

Fixes #444

Author: a-zw

docs/internals/requirements/requirements.rst

@@ -555,6 +555,16 @@ Versioning
 
    QM requirements (safety == QM) shall not be linked to safety requirements (safety != QM) via the ``satisfies`` attribute.
 
+.. tool_req:: Requirement linkage to AoU via covers
+  :id: tool_req__docs_req_link_covers_aou
+  :implemented: YES
+  :version: 1
+  :satisfies: gd_req__req_linkage_aou
+  :parent_covered: YES
+
+  Feature requirements (feat_req) and component requirements (comp_req)
+  link to Assumptions of Use (aou_req) via the ``covers`` attribute.
+
 🏛️ Architecture
 ################
 
@@ -619,7 +629,7 @@ Architecture Attributes
   :id: tool_req__docs_arch_link_fulfils
   :tags: Architecture
   :implemented: YES
-  :version: 1
+  :version: 2
   :satisfies:
    gd_req__arch_linkage_requirement_type,
    gd_req__arch_attr_fulfils,
@@ -637,14 +647,34 @@ Architecture Attributes
      ====================================  ==========================================
      Link Source                           Allowed Link Target
      ====================================  ==========================================
-     feat_arc_sta                          feat_req
+     feat_arc_sta                          feat_req, aou_req
      feat_arc_dyn                          feat_req
      logic_arc_int                         feat_req
-     comp_arc_sta                          comp_req
+     comp_arc_sta                          comp_req, aou_req
      comp_arc_dyn                          comp_req
      real_arc_int                          comp_req
      ====================================  ==========================================
 
+.. tool_req:: Architecture fulfils linkage to AoU
+  :id: tool_req__docs_arch_link_fulfils_aou
+  :implemented: YES
+  :version: 1
+  :satisfies: gd_req__arch_attr_fulfils_aou
+  :parent_covered: YES
+
+  Architectural static views (feat_arc_sta, comp_arc_sta)
+  link to Assumptions of Use (aou_req) via the ``fulfils`` attribute.
+
+.. tool_req:: Check Architecture linkage to AoU
+  :id: tool_req__docs_arch_link_aou_check
+  :implemented: NO
+  :version: 1
+  :satisfies: gd_req__arch_linkage_aou
+  :parent_covered: YES
+
+  Architectural static views (feat_arc_sta, comp_arc_sta)
+  are not linked to their own AoU via the ``fulfils`` attribute.
+
 
 .. tool_req:: Ensure safety architecture elements link a safety requirement
   :id: tool_req__docs_arch_link_safety_to_req

src/extensions/score_metamodel/metamodel.yaml

@@ -306,6 +306,8 @@ needs_types:
       valid_until: ^v(0|[1-9]\d*)\.(0|[1-9]\d*)(\.(0|[1-9]\d*))?$
     optional_links:
       belongs_to: feat # for evaluation
+      # req-Id: tool_req__docs_req_link_covers_aou
+      covers: aou_req
     tags:
       - requirement
       - requirement_excl_process
@@ -336,6 +338,9 @@ needs_types:
       # req-Id: tool_req__docs_req_attr_testcov
       testcovered: ^(YES|NO)$
       hash: ^.*$
+    optional_links:
+      # req-Id: tool_req__docs_req_link_covers_aou
+      covers: aou_req
     tags:
       - requirement
       - requirement_excl_process
@@ -434,7 +439,8 @@ needs_types:
       status: ^(valid|invalid)$
     mandatory_links:
       includes: ^logic_arc_int(_op)*__.+$
-      fulfils: feat_req
+      # req-Id: tool_req__docs_arch_link_fulfils, tool_req__docs_arch_link_fulfils_aou
+      fulfils: feat_req, aou_req
       belongs_to: feat # make it mandatory for evaluation
     tags:
       - architecture_element
@@ -584,7 +590,8 @@ needs_types:
       status: ^(valid|invalid)$
     mandatory_links:
       belongs_to: comp
-      fulfils: comp_req
+      # req-Id: tool_req__docs_arch_link_fulfils, tool_req__docs_arch_link_fulfils_aou
+      fulfils: comp_req, aou_req
     optional_links:
       uses: logic_arc_int, real_arc_int_op
     tags:
@@ -930,6 +937,11 @@ needs_extra_links:
     incoming: satisfied by
     outgoing: satisfies
 
+  # req-Id: tool_req__docs_req_link_covers_aou
+  covers:
+    incoming: covered by
+    outgoing: covers
+
   # Architecture
   consists_of:
     incoming: forms part of