feat(database): owner filter and pagination for models list

[JohnChantz]

Add owner-chip filtering and server-side pagination (limit 10) to the Database Models list. Search, selected owners, and current page are all driven by URL search params (?search, ?owner, ?page), so filter state is shareable, survives reload, and works with browser Back/Forward.

What kind of change does this PR introduce? (check at least one)

• Bugfix
• Feature
• Code style update
• Refactor
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Does this PR introduce a breaking change? (check one)

• Yes
• No

If yes, please describe the impact and migration path for existing applications:

The PR fulfills these requirements:

• It's submitted to the master branch
• When resolving a specific issue, it's referenced in the PR's title (e.g. fix #xxx, where "xxx" is the issue number)

If adding a new feature, the PR's description includes:

• A convincing reason for adding this feature (to avoid wasting your time, it's best to open a suggestion issue first and wait for approval before working on it)

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