chore(angular-react): Migrate PollResult model to React

[devin-ai-integration]

Summary

Migrates the Angular PollResult class (src/app/shared/models/poll-result.ts) to a React-compatible TypeScript interface at src/models/poll-result.ts.

Changes:

• Converted class PollResult → interface PollResult
• Preserved both fields (points: number, content: string) with identical types
• Used camelCase naming conventions
• No new dependencies introduced — this is a leaf node with no imports

Review & Testing Checklist for Human

• Verify the interface fields match the original Angular class (points: number, content: string)
• Confirm no Angular source files were removed

Notes

This is a pure data model with no logic, lifecycle hooks, services, or template. The migration is a straightforward class-to-interface conversion.

The original Angular class remains untouched at src/app/shared/models/poll-result.ts per playbook rules (do not remove Angular components).

Link to Devin session: https://app.devin.ai/sessions/4647b11992a8448e95d28c1475404129
Requested by: @charityquinn-cognition

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[devin-ai-integration]

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✅ Devin Review: No Issues Found

Devin Review analyzed this PR and found no potential bugs to report.

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