fix: make the Block AI crawlers setting an explicit decision - #92
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The setting withdrew a recognised AI crawler's good-bot pass and left the outcome to heuristic scoring. Scoring adds no user-agent points for a recognised bot, so a well-behaved AI crawler could finish below the block threshold. A crawler the owner has chosen to block is now refused before scoring, with the flag ai_crawler_blocked so the Detections page says why. The custom allowlist still wins, search engines and social bots are unaffected, and monitor mode suppresses the block like every other enforcement path. Adds behaviour tests for the setting.
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What changes
Block AI crawlers now refuses a recognised AI crawler as an explicit decision, before any heuristic scoring.
Why
The setting worked by withdrawing the crawler's good-bot pass and letting scoring decide. Scoring adds no user-agent points for a recognised bot, so a well-behaved AI crawler sending ordinary headers could finish below the block threshold. An owner's instruction should not depend on how a request happens to score.
Behaviour
min_score_to_block, with the flagai_crawler_blockedanddenied_by: block_ai_crawlers, so the Detections page says why.Tests
New
tests/AiCrawlerPolicyTest.phpcovers each line above. Full suite: 106 passed.