feat(providers): prompt caching for Anthropic + Azure-Anthropic#5101

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waleedlatif1 wants to merge 6 commits into

feat/provider-prompt-caching

Commits on Jun 16, 2026

feat(providers): prompt caching for Anthropic + Azure-Anthropic
waleedlatif1
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fix(providers): cache gate uses request system prompt; test uses vi.stubEnv
waleedlatif1
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refactor(providers): always-on prompt caching via a directly-tested helper
waleedlatif1
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fix(providers): size prompt-cache gate on the larger of payload.system and request prompt
waleedlatif1
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docs(providers): move prompt-cache inline comments into TSDoc
waleedlatif1
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test(providers): add request-capture test for Anthropic prompt caching
waleedlatif1
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