Add native V2 workspace identity authoring

[Paul Lizer (paullizer)]

Summary

• Close the personal identity authoring gap in V2 so users can create and edit reusable credentials without opening classic pages.
• Share the scope-aware authoring workbench across personal, group, and public workspaces while keeping existing group/public permissions and routes intact.
• Add a strict session-owned personal API with conditional edit/delete, stale-write conflict recovery, sanitized credential projections, and reference-safe deletion.

Linked issue

Refs #1722

Release Notes & Latest Features

• New Feature
• Bug Fix
• UI Enhancement
• Breaking Change
• Internal only

Is this visible to end users?

• Yes
• No

Is this admin-facing (Admin Settings, governance, deployment, config)?

• Yes
• No

Should this become a Latest Feature card?

• Yes
• No
• Already added

Screenshot needed for the card?

• Yes
• No
• Attached

Version bump

• application/single_app/config.py VERSION third segment bumped, or not needed because this is docs-only
• deployers/version.txt bumped, or not needed because deployers/ was not changed

Testing / validation

• Set-Location application\v2_ui; npm run build - passed.
• python -m pytest -q functional_tests\test_personal_identity_apis.py functional_tests\test_personal_identity_fixture_parity.py functional_tests\test_personal_identity_transport.py functional_tests\test_group_identity_apis.py functional_tests\test_public_identity_apis.py functional_tests\test_group_identity_fixture_parity.py functional_tests\test_public_identity_fixture_parity.py functional_tests\test_identity_credential_round_trip_fix.py functional_tests\test_group_identity_transport.py functional_tests\test_public_identity_transport.py functional_tests\test_action_workspace_identity_scoping.py - 258 passed.
• python -m pytest -q ui_tests\test_v2_personal_identities.py ui_tests\test_v2_group_identities.py ui_tests\test_v2_public_identities.py - 78 passed.
• Route Blueprint inventory, unauthenticated policy and route policy coverage scripts - passed (15/15, 10/10, 3/3).
• python functional_tests\test_docs_app_surface_coverage.py - 7/7 passed; python functional_tests\test_docs_site_quality.py - 6/6 passed.
• git diff --check - passed.

Documentation

• Release notes updated, or not needed
• Feature documentation updated, or not needed
• Fix documentation updated, or not needed

Security checklist

• New Flask routes include @swagger_route(security=get_auth_security())
• Settings sent to non-admin frontends use sanitize_settings_for_user()
• Browser JavaScript is served from local SimpleChat static assets only; no CDN-hosted JS
• No secrets, keys, connection strings, or local-only artifacts are included