Harden Textract Civil ID expiry extraction

[willjy1]

Related to #55

/claim #55

Scope

This is a narrow, non-overlapping Textract Civil ID expiry extractor hardening slice. It does not touch the Civil ID upload/remove S3 flow, S3 credential env-var PRs, IAM/bucket policy work, CloudTrail helpers, Xero/OneSignal/SQS/MediaConvert/SES/service-token slices, live AWS access, candidate data, or real credential values.

Summary

• Make IdExpiryDateExtractor fail closed when Textract credentials or the S3 document bucket/region are missing.
• Restrict Textract document reads to Civil ID objects under the photos/ prefix before calling AWS.
• Log AWS/provider failures by code/type and return sanitized errors instead of raw exception text.
• Prevent the Civil ID validation cron from overwriting an existing expiry date with today's date when OCR returns an ID but no date match.
• Add docs and a static regression guard for the Textract/Civil ID extractor contract.

Verification

py -3 tests\check-textract-civil-id-extractor.py
# Textract Civil ID extractor hardening check passed.

git diff --check

py -3 -m py_compile tests\check-textract-civil-id-extractor.py

php -l could not be run here because PHP is not installed in this environment. The PHP changes are limited to the existing Textract component and one cron guard, and the regression script checks the security-sensitive behavior directly.

Safety boundary

No AWS/IAM/S3 API calls, key rotation/deletion, bucket policy changes, candidate records, Civil ID images, private exports, or credential values were accessed or included.

Transparency: automation-assisted; I reviewed the diff and validation before submitting.

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⚙️ Run configuration

Configuration used: defaults

Review profile: CHILL

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Run ID: fa97a833-b231-44d7-9c8a-f176070bb7c5

📥 Commits

Reviewing files that changed from the base of the PR and between 7b023ff and 97577ac.

📒 Files selected for processing (4)

• common/components/IdExpiryDateExtractor.php
• console/controllers/CronController.php
• docs/textract-civil-id-extractor.md
• tests/check-textract-civil-id-extractor.py

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🧪 Generate unit tests (beta)

• Create PR with unit tests

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