Franklin Agent 3.24.4 — correct cache_control docstring (#73 follow-up)
Docs-only follow-up to 3.24.3.
The JSDoc describing applyAnthropicPromptCaching had drifted above the wrong function (modelHasExtendedThinking) and still claimed "4 breakpoints: system + last 3 messages" while omitting the tool breakpoint — the exact 5-vs-4 miscount that caused #73.
- Reattached a corrected docstring to the caching function, spelling out the real budget order: system (1) + last tool (1) + remaining message window (capped at 4 combined).
No runtime change — the breakpoint cap shipped in 3.24.3. 443/443 local tests pass.