Draft: feat: knowledge graph redaction API endpoint

What does this MR do and why?

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use with admin token

python3 -m scripts.knowledge_graph --token glpat-Q_...  

21:56:48 [INFO] ============================================================
21:56:48 [INFO] Knowledge Graph Authorization Validation
21:56:48 [INFO] ============================================================
21:56:48 [INFO] GitLab URL: http://localhost:3000
21:56:48 [INFO] Rails Root: .
21:56:48 [INFO] 
21:56:48 [INFO] ============================================================
21:56:48 [INFO] SETUP: Creating test data
21:56:48 [INFO] ============================================================
21:57:04 [INFO] Created user: kg_test_with_access_1764989808 (ID: 90)
21:57:04 [INFO] Created user: kg_test_no_access_1764989808 (ID: 91)
21:57:05 [INFO] Created user: kg_test_blocked_1764989808 (ID: 92)
21:57:05 [INFO] Blocked user 92
21:57:08 [INFO] Created project: kg_test_project_public_1764989808 (ID: 73, visibility: public)
21:57:09 [INFO] Created project: kg_test_project_private_1764989808 (ID: 74, visibility: private)
21:57:09 [INFO] Added user 90 to project 74 with access level 30
21:57:24 [INFO] Refreshed authorizations for user 90
21:57:25 [INFO] Created issue: KG Test Issue public (ID: 159, confidential: False)
21:57:26 [INFO] Created issue: KG Test Issue private (ID: 160, confidential: False)
21:57:26 [INFO] Created issue: KG Test Issue confidential (ID: 161, confidential: True)
21:57:27 [INFO] Created MR: KG Test MR private (ID: 281)
21:57:27 [INFO] Setup complete: 3 users, 2 projects, 4 resources
21:57:27 [INFO] ============================================================
21:57:27 [INFO] RUNNING TESTS
21:57:27 [INFO] ============================================================
21:57:27 [INFO] [PASS] Public resource access: User can access public resource (56.08ms)
21:57:27 [INFO] [PASS] Private resource - no access: User correctly denied access to private resource (69.73ms)
21:57:28 [INFO] [PASS] Private resource - with access: User with access can see private resource (48.61ms)
21:57:28 [INFO] [PASS] Confidential issue access: Project member can access confidential issue (50.69ms)
21:57:28 [INFO] [PASS] Blocked user - no access: Blocked user correctly gets empty authorizations (14.14ms)
21:57:28 [INFO] [PASS] Non-existent user: Non-existent user correctly gets empty authorizations (14.63ms)
21:57:28 [INFO] [PASS] Non-existent resource: Non-existent resource correctly returns false (22.66ms)
21:57:28 [INFO] [PASS] Merge request authorization: MR authorization works correctly (93.13ms)
21:57:28 [INFO] [PASS] Batch authorization: Batch authorization returned results for 2 resource types (80.70ms)
21:57:28 [INFO] [PASS] Empty resources: Empty resources returns empty authorizations (17.84ms)
21:57:28 [INFO] Creating 100 merge requests for large batch test...
21:57:29 [INFO] Created MR: KG Test MR batch_0 (ID: 282)
21:57:31 [INFO] Created MR: KG Test MR batch_1 (ID: 283)
...
21:59:37 [INFO] Created MR: KG Test MR batch_98 (ID: 380)
21:59:39 [INFO] Created MR: KG Test MR batch_99 (ID: 381)
21:59:39 [INFO] Created 100 MRs, testing batch authorization...
21:59:39 [INFO] [PASS] Large batch MRs: Authorized 100/100 MRs (133.30ms)
21:59:39 [INFO] ============================================================
21:59:39 [INFO] TEST SUMMARY
21:59:39 [INFO] ============================================================
21:59:39 [INFO] Total: 11, Passed: 11, Failed: 0
21:59:39 [INFO] 
21:59:39 [INFO] ============================================================
21:59:39 [INFO] CLEANUP: Removing test data
21:59:39 [INFO] ============================================================
21:59:39 [INFO] Deleted project: kg_test_project_public_1764989808
21:59:40 [INFO] Deleted project: kg_test_project_private_1764989808
21:59:40 [INFO] Deleted user: kg_test_with_access_1764989808
21:59:40 [INFO] Deleted user: kg_test_no_access_1764989808
21:59:40 [INFO] Deleted user: kg_test_blocked_1764989808
⋊> ~/g/k/g/gitlab on redaction-design ◦                      

How to set up and validate locally

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