fix: make embedding calls robust against context overflow and strict endpoint validation#1437

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PaoloC68 wants to merge 6 commits intoagent0ai:developmentfrom

PaoloC68:fix/embedding-robustness

Commits on Apr 4, 2026

fix: prevent embedding 422 from strict OpenAI-compatible endpoints
PaoloC68
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fix: subtract 500-token safety margin from embedding ctx to handle tokenizer divergence
PaoloC68
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fix: use 20% proportional ctx reduction for embedding truncation
PaoloC68
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fix: retry embedding with halved text on context-length error
PaoloC68
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fix: use status_code==400 instead of string matching to detect context-length errors
PaoloC68
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fix: cap fallback memory recall query at 4000 chars
PaoloC68
committed