FG3-4 executable build — economic-settlement process

Upgrades the FG3-4 sub-process from a composition stub to a Level 4 atomic
executable: BPMN process Process_SaimnieciskaNorekina (advance request,
settlement submission/approval, VPC processing, reconciliation and outcome
handling across the Nodarbinatais/Iestade/VPC lanes), DMN decision
Decision_AvansaNorekins (FIRST hit policy, advance-vs-expense reconciliation),
resource roles/agents/mappings and policies metadata. Transcribed from the
Valsts Kase FG3 register sections 3.5.2 and 3.5.4. Validates against the
UAPF 2.2.0 schemas and the uapf-cli validator.

processes/fg3-4/uapf.yaml

@@ -1,15 +1,60 @@
 kind: uapf.package
 id: vk.gramatvediba.fg3-4
 name: "FG3-4 — Saimnieciskā norēķina veikšana"
-description: "Economic settlement: handling of advances, petty-cash and other economic settlements with employees and counterparties."
+description: "Level 4 atomic executable process: advance requests, submission and approval of economic-expense settlements, VPC processing, advance-vs-expense reconciliation and the resulting repayment, additional payment or carry-forward. The second FG3 sub-process taken to executable depth (BPMN + DMN + resource mappings)."
 level: 4
 version: 0.1.0
 includes: []
 cornerstones:
-  bpmn: false
-  dmn: false
+  bpmn: true
+  dmn: true
   cmmn: false
-  resources: false
+  resources: true
+paths:
+  bpmn: bpmn
+  dmn: dmn
+  cmmn: cmmn
+  resources: resources
+  metadata: metadata
+exposure:
+  mcp:
+    enabled: true
+    runnable: true
+    exposedEntrypoints:
+      - process: Process_SaimnieciskaNorekina
+        tool: vk.fg3-4.run
+      - decision: Decision_AvansaNorekins
+        tool: vk.fg3-4.evaluate-settlement
+    exposedArtifacts:
+      - manifest
+      - bpmn
+      - dmn
+inputs:
+  - avansa-pieprasijums
+  - izdevumu-apliecinosie-dokumenti
+outputs:
+  - iegramatots-norekins
+  - avansa-atmaksas-pieprasijums
+  - papildu-izmaksas-priekslikums
+artifacts:
+  bpmn:
+    - path: bpmn/saimnieciska-norekina.bpmn
+      role: primary-process
+      description: "Economic-expense settlement: advance request, settlement submission and approval, VPC processing, reconciliation and outcome handling."
+  dmn:
+    - path: dmn/avansa-norekins.dmn
+      role: routing-decision
+      description: "Reconciles the advance against documented expenses and sets the settlement outcome."
+  resources:
+    - path: resources/roles.yaml
+      role: roles
+      description: "Human roles participating in the process."
+    - path: resources/agents.yaml
+      role: agents
+      description: "AI agent declared for assisted steps."
+    - path: resources/mappings.yaml
+      role: resource-mapping
+      description: "Bindings of BPMN tasks and the DMN decision to targets."
 owners:
   - type: team
     id: vpc