Update PII categories for AI Security for Apps model migration

[mrusso19]

Summary

Updates public documentation to reflect the PII detection model migration from Presidio to a new AI-based Named Entity Recognition (NER) model.

Replace the 39 Presidio-based PII categories with 13 categories supported by the new NER model. Remove Presidio attribution from docs; update example rules to use BANK_ACCOUNT instead of dropped IBAN_CODE/US_BANK_NUMBER.

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[cloudflare-docs-bot]

Review

⚠️ 1 warning found in commit 2491b4e.

👉 Fix in your agent 👈

Fix the following review findings in PR #32825 (https://github.com/cloudflare/cloudflare-docs/pull/32825).

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---

## Code Review

### Warnings (1)

#### CR-118ecf525262 · Category list out of sync with field reference
- **File:** `src/content/docs/waf/detections/ai-security-for-apps/pii-detection.mdx` line 30
- **Issue:** Line 30 points readers to the `cf.llm.prompt.pii_categories` field reference for the full list of categories. The current `src/content/fields/index.yaml` still enumerates the old set (`CRYPTO`, `US_BANK_NUMBER`, `IBAN_CODE`, `US_DRIVER_LICENSE`, `US_ITIN`, `US_PASSPORT`, `NRP`, `UK_NHS`, `UK_NINO`, `ES_NIF`), which does not match the migrated categories shown in the new table. Unless the field reference is also updated, the two pages will contradict each other.
- **Fix:** Update the `cf.llm.prompt.pii_categories` field reference (in `src/content/fields/index.yaml` or the generated page) to the same migrated category set so the linked reference and this table stay consistent.

Code Review

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Warnings (1)

File

Issue

waf/detections/ai-security-for-apps/pii-detection.mdx line 30

Category list out of sync with field reference — Line 30 points readers to the cf.llm.prompt.pii_categories field reference for the full list of categories. The current src/content/fields/index.yaml still enumerates the old set (CRYPTO, US_BANK_NUMBER, IBAN_CODE, US_DRIVER_LICENSE, US_ITIN, US_PASSPORT, NRP, UK_NHS, UK_NINO, ES_NIF), which does not match the migrated categories shown in the new table. Unless the field reference is also updated, the two pages will contradict each other. Fix: Update the cf.llm.prompt.pii_categories field reference (in src/content/fields/index.yaml or the generated page) to the same migrated category set so the linked reference and this table stay consistent.

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[mrusso19]

Category list out of sync with field reference — Line 30 points readers to the cf.llm.prompt.pii_categories field reference for the full list of categories. The current src/content/fields/index.yaml still enumerates the old set (CRYPTO, US_BANK_NUMBER, IBAN_CODE, US_DRIVER_LICENSE, US_ITIN, US_PASSPORT, NRP, UK_NHS, UK_NINO, ES_NIF), which does not match the migrated categories shown in the new table. Unless the field reference is also updated, the two pages will contradict each other. Fix: Update the cf.llm.prompt.pii_categories field reference (in src/content/fields/index.yaml or the generated page) to the same migrated category set so the linked reference and this table stay consistent.

We are updating src/content/fields/index.yaml in the same PR. This review comment is wrong.