Remove automatic tag creation for UUID/localname tags

[zhuoyuan-liu]

The admin UI performance was significantly degraded when loading large environments (10k+ nodes). Recent profiling showed that the main bottleneck was initializing Select2 with a very large tag list. We partially addressed the issue by deferring Select2 initialization in the nodes table.

However, a deeper root cause remains: the system eagerly auto-creates tags for every node's UUID and localname (and other attributes). These tags provide little organizational value because:

• UUID is already a unique identifier and linkable elsewhere.
• Localname/hostname is already displayed in the table and searchable.
• The explosion in automatically generated tags drastically increases the volume of tag records and payload size sent to the browser.
• Operators typically expect tags to represent meaningful cohorts (environment, platform, region, team, function), not raw unique identifiers.

Proposed Change: Modify auto-tagging so that only meaningful cohort-level tags are auto-created (e.g. environment name, platform) and stop creating per-node UUID and localname tags.

Acceptance Criteria:

• New nodes no longer generate UUID or localname tags.
• Existing UUID/localname tags can be removed via documented cleanup process.
• UI tag selector shows a significantly reduced tag list after cleanup (manual verification).
• No regression in environment/platform tagging (if retained).

[javuto]

Makes sense, I can create a PR for this change and also document the existing tags cleanup process. Thanks for opening the issue!

[zhuoyuan-liu]

Hi @javuto , have you started working on it? If not, I can finish it tomorrow.

[javuto]

@zhuoyuan-liu here it is, please review, thanks!

#737