feat: add auto-refresh polling for memo feeds

[AobaIwaki123]

Summary

Add auto-refresh functionality for memo feeds.
Polls for new memos at a user-configured interval and automatically refreshes the list when updates are detected.

Tip

If you'd like to try this feature before the official release, pre-built Docker images are available at iwakiaoba/aoba-memos on Docker Hub.

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Architecture

sequenceDiagram
    participant Hook as useAutoRefresh
    participant API as MemoService
    participant List as PagedMemoList
    
    loop Every interval (when visible & online)
        Hook->>API: ListMemos (pageSize=1)
        API-->>Hook: Latest memo
        alt New memo detected
            Hook->>List: onRefresh()
        end
    end

Loading

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Related Issues

• Hope to be able to increase the automatic updates of content #4141
• Enhancement Suggestion: Automatic Update Detection and Notification Feature #3652: This PR implements automatic update detection only, NOT the notification feature

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Changes

Proto Definitions

File	Change
proto/api/v1/user_service.proto	Add auto_refresh_interval field
proto/api/v1/instance_service.proto	Add enable_explore_auto_refresh, min_auto_refresh_interval
proto/store/user_setting.proto	Add auto_refresh_interval field
proto/store/instance_setting.proto	Add enable_explore_auto_refresh, min_auto_refresh_interval

Backend

File	Change
server/router/api/v1/user_service.go	Handler/converter for auto_refresh_interval
server/router/api/v1/instance_service.go	Converter for new instance settings

Frontend

File	Change
web/src/hooks/useAutoRefresh.ts	New - Polling hook
web/src/components/PagedMemoList/PagedMemoList.tsx	Integrate useAutoRefresh
web/src/components/Settings/PreferencesSection.tsx	User setting UI
web/src/components/Settings/InstanceSection.tsx	Admin setting UI
web/src/pages/Home.tsx, Explore.tsx	Pass autoRefresh prop
web/src/locales/{en,ja}.json	Add translation keys

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Behavior

User Settings

• Location: Settings > Preferences > Auto-refresh interval
• Input: Seconds (0 = disabled, default = 10)
• Constraint: Must be ≥ admin-configured minimum

Admin Settings

• Enable Explore page auto-refresh: Toggle auto-refresh on Explore page (disabled by default to prevent excessive server load from public page polling)
• Minimum auto-refresh interval: Floor for user-configured interval (default = 1s, also for server load control)

Polling Logic

• Pauses when tab is hidden
• Pauses when offline
• Refreshes only when new memos are detected

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FieldMask Naming Convention

New fields use snake_case for FieldMask paths.

// Correct
["auto_refresh_interval"]

// Incorrect - causes encoding error
["autoRefreshInterval"]

JSON Encoding of Field Masks
In JSON, a field mask is encoded as a single string where paths are separated by a comma. Fields name in each path are converted to/from lower-camel naming conventions.

Protocol Buffers Well-Known Types - Protocol Buffers Documentation

[milvasic]

@boojack I think I created something similar in 5638