Reduce log spam

[ieQu1]

No description provided.

[Copilot]

Pull request overview

This PR clarifies hook behavior by introducing named priority bounds for built-in hooks, adjusts a few tracepoint calls for consistency, and changes default site/cluster ID generation to use uppercase hex encoding.

Changes:

• Generate default site/cluster IDs as uppercase hex instead of base64.
• Add ?max_hook_prio / ?min_hook_prio macros and use them for built-in hook registration priorities.
• Simplify/standardize some ?tp(...) tracepoint invocations in membership sync paths.

Reviewed changes

Copilot reviewed 4 out of 4 changed files in this pull request and generated no comments.

File	Description
src/classy_node.erl	Switches default persistent ID generation from base64 to uppercase hex.
src/classy_membership.erl	Updates several tracepoint calls to a 2-argument form and slightly reformats one trace call.
src/classy_internal.hrl	Introduces hook priority bound macros used by built-in hook registration.
src/classy_hook.erl	Uses the new hook priority macros for default/built-in hooks.

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