[TIME-TRAVEL] [UI] Add 'Search within Snapshots' functionality

[dotandev]

Description

Allow users to search for snapshots where a specific ledger key was modified.

Requirements

• Extend the search command (/) to include a changed-key: filter.
• Filter the snapshot registry for matches.
• Highlight the matching steps in the trace tree.

Acceptance Criteria

• User can quickly find "Where did my balance change?".
• Search performance is fast (<100ms for 1000 frames).

Estimated File Changes: 3 (internal/ui/search.go, internal/debug/registry.go, internal/ui/trace_view.go)

[dee-john]

@dee-john has applied to work on this issue as part of the Stellar Wave Program's 3rd wave.

Hi, I'd like to work on this issue!

Hello there, I'd love to work on this issue because I am very conversant with solving problems like this!

ℹ️ Repo Maintainers: To accept this application, review their application or assign @dee-john to this issue.

[drips-wave]

Congratulations, @dee-john! 🎉 Your application was accepted by the repo's maintainers, and the issue is due on March 30, 2026.

🧑‍💻 @dee-john: Please resolve the issue such that the repo's maintainers have enough time to review your contribution before the due date. You'll earn Points for completing the issue on-time, which will make you eligible for a share of the Stellar Wave Program's reward pool.

Warning

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