feat: add connection diagram action and permissions to Cedar authorization

[Artuomka]

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📥 Commits

Reviewing files that changed from the base of the PR and between f850e56 and 0336542.

📒 Files selected for processing (9)

• backend/src/entities/cedar-authorization/cedar-action-map.ts
• backend/src/entities/cedar-authorization/cedar-policy-generator.ts
• backend/src/entities/cedar-authorization/cedar-policy-parser.ts
• backend/src/entities/cedar-authorization/cedar-schema.json
• backend/src/entities/cedar-authorization/cedar-schema.ts
• backend/src/entities/connection/connection.controller.ts
• backend/src/guards/connection-diagram.guard.ts
• backend/test/ava-tests/non-saas-tests/non-saas-cedar-policy-generator.test.ts
• backend/test/ava-tests/saas-tests/saas-cedar-connection-diagram-permission-e2e.test.ts

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• Commit unit tests in branch backend_ceadr_diagram_permission

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[Copilot]

Pull request overview

This PR introduces a dedicated Cedar authorization action for fetching a connection ER diagram, and wires the /connection/diagram/:connectionId endpoint to use that action instead of reusing connection:edit.

Changes:

• Added new Cedar action connection:diagram to the Cedar action map and schema (TS + JSON).
• Added ConnectionDiagramGuard and updated the connection diagram endpoint to authorize via connection:diagram.
• Updated Cedar policy generation and tests so connection:edit policies also include connection:diagram, and added SaaS E2E coverage for the new permission behavior.

Reviewed changes

Copilot reviewed 9 out of 9 changed files in this pull request and generated 2 comments.

Show a summary per file

File	Description
backend/test/ava-tests/saas-tests/saas-cedar-connection-diagram-permission-e2e.test.ts	New SaaS E2E tests validating allow/deny behavior for connection:diagram including raw Cedar policy scenarios.
backend/test/ava-tests/non-saas-tests/non-saas-cedar-policy-generator.test.ts	Updates generator expectations to include connection:diagram when connection access is edit.
backend/src/guards/connection-diagram.guard.ts	New NestJS guard that authorizes diagram access via CedarAction.ConnectionDiagram.
backend/src/entities/connection/connection.controller.ts	Switches the diagram endpoint guard from ConnectionEditGuard to ConnectionDiagramGuard.
backend/src/entities/cedar-authorization/cedar-schema.ts	Adds connection:diagram to the Cedar schema (TS).
backend/src/entities/cedar-authorization/cedar-schema.json	Adds connection:diagram to the Cedar schema (JSON).
backend/src/entities/cedar-authorization/cedar-policy-parser.ts	Updates classical-permission parsing to recognize connection:diagram.
backend/src/entities/cedar-authorization/cedar-policy-generator.ts	Ensures generated policies for connection:edit also permit connection:diagram.
backend/src/entities/cedar-authorization/cedar-action-map.ts	Adds ConnectionDiagram to the CedarAction enum.

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