Document encrypted calendar token storage - #147

Running Vale across on the following files affected by this PR:

- api-reference/calendar.mdx
- api-reference/invite.mdx
- api-reference/overview.mdx

Attempting to initialize Vale linter...
No customer vale configuration detected. Using Mintlify's default configuration.
Attempting to run Vale spellcheck...
Vale spellcheck completed successfully.

api-reference/calendar.mdx:
	- 10:139    Did you really mean 'userId'?
	- 28:152    Did you really mean 'plaintext'?

api-reference/invite.mdx:
	- 8:58    Did you really mean 'Agentbot'?

api-reference/overview.mdx:
	- 3:42      Did you really mean 'Agentbot'?
	- 8:28      Did you really mean 'Agentbot'?
	- 18:1      Did you really mean 'Agentbot'?
	- 215:53    Did you really mean 'Farcaster'?
	- 216:55    Did you really mean 'Farcaster'?
	- 226:84    Did you really mean 'param'?
	- 227:91    Did you really mean 'param'?
	- 251:42    Did you really mean 'Mux'?
	- 252:43    Did you really mean 'Mux'?
	- 254:32    Did you really mean 'Mux'?
	- 297:9     Did you really mean 'Agentbot'?


Found 14 suggested changes across 3 files in 2407.92ms