docs(cache): document cache bypass conditions and hit matching requirements

[firecrawl-spring]

Summary

• Adds a section documenting conditions that silently bypass caching (custom headers, actions, browser profile, changeTracking format, custom screenshot settings)
• Adds a section documenting parameters that must match exactly for a cache hit (url, mobile, location, waitFor, blockAds, screenshot, stealth proxy)
• Documents metadata.cacheState as a way to verify cache behavior

Related Pylon Ticket

https://app.usepylon.com/issues?issueNumber=25626

Test plan

• Verify the new sections render correctly in the docs site
• Confirm the listed bypass conditions and match parameters align with the implementation in engines/index/index.ts

[mintlify]

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Project	Status	Preview	Updated (UTC)
firecrawl	🟢 Ready	View Preview	Mar 31, 2026, 4:00 AM