FOLLOW-UP: Add inline comment near WithPermissiveOriginCheck() in example main.go files (from PR #256)

[adnaan]

Context

PR #256 added two example apps using WithPermissiveOriginCheck() for local-dev convenience.

Source PR: #256
Suggested by: @claude[bot]
Comment type: PR review (round 7)

Task Description

Add a one-line inline comment near each WithPermissiveOriginCheck() call in:

• examples/literate-counter-include/_app/main.go
• examples/literate-linked-include/_app/main.go

Suggested wording: // Safe only because this app is deployed on the same trusted host as the docs; production apps should use strict origin checking.

The sharedAuth type already has a thorough comment, but the WithPermissiveOriginCheck call is the more common copy-paste target.

Original Comment

WithPermissiveOriginCheck() is fine for a tutorial counter on trusted dev infra, but it's listed without a comment in the handler setup. Adding one sentence near WithPermissiveOriginCheck() would help prevent copy-paste misuse.
— @claude[bot], round 7

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