Admin UI: toggle KnowledgeGraphSettings flags (learningPathEnabled, conceptDefinitionsEnabled)

[jung-thomas]

Problem

KG_LEARNING_PATH_ENABLED and KG_CONCEPT_DEFINITIONS_ENABLED are registered in srv/lib/feature-flags/registry.js as kind: 'db-setting' on the KnowledgeGraphSettings singleton (columns learningPathEnabled / conceptDefinitionsEnabled), not as ImsConfig flag.* rows.

The admin Feature Flags page only toggles ImsConfig flag.* entries, so attempting to flip these there returns:

Only DB feature flags are togglable here

There is no admin-UI surface for the KnowledgeGraphSettings singleton, so an operator currently cannot enable these two flags from the UI.

Current workaround (used on PROD 2026-09-20)

Direct HANA UPDATE via hana-cli:

UPDATE COM_SAP_DEVELOPERS_IMS_KNOWLEDGEGRAPHSETTINGS
SET LEARNINGPATHENABLED=TRUE, CONCEPTDEFINITIONSENABLED=TRUE, MODIFIEDAT=CURRENT_TIMESTAMP;

(Or a PATCH /odata/v4/admin/KnowledgeGraphSettings singleton with an Admin JWT — the projection is updatable, @requires: 'Admin'.)

Ask

Add an admin-UI surface to view/toggle the KnowledgeGraphSettings singleton columns (enabled, learningPathEnabled, conceptDefinitionsEnabled, onDemandExtractionEnabled, and the tunables extractBuildCap / mergeSimThreshold*), so these no longer require DB access or a hand-crafted PATCH.

Options to consider:

• A dedicated "Knowledge Graph Settings" tile/section in the admin shell (parallels the existing settings surfaces).
• OR extend the Feature Flags page to render db-setting-kind registry entries and PATCH the backing *Settings entity, not just ImsConfig flag.* rows — would cover this whole class of flag generically.

Refs

• srv/lib/feature-flags/registry.js (entries KG_LEARNING_PATH_ENABLED, KG_CONCEPT_DEFINITIONS_ENABLED)
• srv/admin-service.cds:497 (KnowledgeGraphSettings singleton projection)
• db/schema.cds:841 (entity definition)
• Resolver cache TTL 5s: srv/lib/runtime-config/kg-settings.js