feature/TECH-3959 Embedding Group Invites Additions

[VitaliiSkuratovskyi]

Greptile Summary

Adds document-group embedded-invite support and releases it as client library version 1.0.8.

• Adds request and response DTOs for creating embedded invites, generating signing links, and retrieving document-group V2 information.
• Adds service wrappers for create, link, lookup, and deletion endpoints.
• Adds wire-format and service-delegation tests for the new functionality.

Confidence Score: 5/5

No additional changed-code-triggered defects were identified beyond the compatibility issue already covered by the existing review thread.

The new DTO serialization and service delegation follow established client patterns, and the investigated endpoint and dependency concerns did not establish a distinct actionable failure.

Important Files Changed

Filename	Overview
client-lib/src/main/java/com/signnow/library/dto/DocumentGroup.java	Adds embedded-invite request/response models and document-group V2 response models with explicit wire-name annotations and unknown-field tolerance.
client-lib/src/main/java/com/signnow/library/facades/DocumentGroups.java	Extends the public facade with embedded-invite operations; its compatibility impact is already covered by an existing review thread.
client-lib/src/main/java/com/signnow/library/services/DocumentGroupsService.java	Implements the four new document-group V2 endpoint wrappers using established client request patterns.
client-lib/src/test/java/com/signnow/library/dto/DocumentGroupEmbeddedInviteSerializationTest.java	Verifies request wire formats, null omission, response field mapping, and unknown-property handling.
client-lib/src/test/java/com/signnow/library/services/DocumentGroupsServiceTest.java	Verifies delegation to the expected HTTP methods, endpoint templates, request objects, and response types.
client-lib/pom.xml	Bumps the client library artifact version from 1.0.7 to 1.0.8 without changing dependencies.

Sequence Diagram

sequenceDiagram
    participant App
    participant DocumentGroupsService
    participant SignNowAPI
    App->>DocumentGroupsService: createDocumentGroupEmbeddedInvite(groupId, request)
    DocumentGroupsService->>SignNowAPI: "POST /v2/document-groups/{id}/embedded-invites"
    SignNowAPI-->>DocumentGroupsService: embedded invite ID
    App->>DocumentGroupsService: getDocumentGroupEmbeddedInviteLink(groupId, inviteId, request)
    DocumentGroupsService->>SignNowAPI: "POST /v2/document-groups/{id}/embedded-invites/{inviteId}/link"
    SignNowAPI-->>DocumentGroupsService: signing link
    DocumentGroupsService-->>App: link

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_{Reviews (1): Last reviewed commit: "removed Claude generated CHANGELOG file" | Re-trigger Greptile}