feat(view-settings): workspace-level client view setting columns (OUT-3851 foundation)

[priosshrsth]

Foundation PR for OUT-3851 — Allow IU to set view settings for CU.

Changes summary

• Add new UI options/flow for IU to set default view settings for CU
• Respect the default view settings override by IU when creating a new view setting for users

Test cases

2026-06-10.17-41-25.mov

[linear-code]

OUT-3851

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Project	Deployment	Actions	Updated (UTC)
tasks-app	Ready	Preview, Comment	Jun 15, 2026 12:51pm

[greptile-apps]

Greptile Summary

This PR adds workspace-level client view settings — default view mode and hide-subtasks toggle — that IUs can configure from the configure-tasks-app page. When a CU gets their first view-setting row created, the service now seeds it from these workspace defaults instead of the hardcoded fallbacks.

• Schema + migration: two nullable columns (clientDefaultViewMode, clientHideSubtasks) added to WorkspaceSettings; migration is in sync and non-breaking.
• Service layer: resolveInitialDisplayDefaults queries workspace settings for Client-role users and applies them when seeding a new ViewSetting row; IU flow is unchanged.
• UI: new ClientViewSettingsSection component with optimistic-update + rollback; ClientViewSettings DTO type was corrected to use required-nullable fields (addressed from prior review).

Confidence Score: 4/5

Mostly safe to merge; one functional gap in the new UI means that once an IU sets a view-mode override they can never clear it back to "no preference" through the UI.

The view-mode dropdown has no "unset" option and its onChange callback never emits null, so an IU who sets List or Board is permanently stuck on that choice — they cannot return to the null/no-override state that the DB schema, placeholder text, and server logic all treat as valid. The DB column, Zod schema, and seeding logic are otherwise correct and the hide-subtasks toggle works cleanly.

src/app/configure-tasks-app/ui/ClientViewSettingsSection.tsx — the ViewModeDropdown component and its VIEW_MODE_OPTIONS array need a null/"no preference" entry.

Important Files Changed

Filename	Overview
src/app/configure-tasks-app/ui/ClientViewSettingsSection.tsx	New section component with optimistic update + rollback. Hide-subtasks toggle is correct; view-mode dropdown lacks a "no preference / unset" option so once set the override can never be cleared.
src/app/api/view-settings/viewSettings.service.ts	Adds resolveInitialDisplayDefaults that queries workspace settings for Client users and seeds their first view-setting row accordingly; IU fallback unchanged. Logic is clean and well-commented.
src/app/api/workspace-settings/workspaceSettings.service.ts	Replaced upsert with update; safe for the page UI but will throw P2025 if PATCH is ever called before a GET on the same workspace.
src/types/dto/workspaceSettings.dto.ts	Adds ClientViewSettings standalone type (required nullable fields) and extends the Zod schema with clientDefaultViewMode and clientHideSubtasks. Clean fix from earlier review feedback.
prisma/schema/workspaceSetting.prisma	Adds optional clientDefaultViewMode (ViewMode?) and clientHideSubtasks (Boolean?) fields; migration is in sync.
prisma/migrations/20260610074631_add_client_view_settings_to_workspace_settings/migration.sql	Adds two nullable columns to WorkspaceSettings; non-breaking, matches the schema changes.
src/app/configure-tasks-app/page.tsx	Wires ClientViewSettingsSection into the configure page with correct initial settings derived from the fetched workspace setting.
next.config.js	Adds allowedDevOrigins wildcard for ngrok tunnels; this config key is Next.js development-only and has no effect in production.

Sequence Diagram

sequenceDiagram
    participant IU as IU Browser
    participant Page as ConfigureTasksAppPage
    participant WS_API as /api/workspace-settings
    participant WS_Svc as WorkspaceSettingsService
    participant VS_Svc as ViewSettingsService
    participant DB as Database

    IU->>Page: Load page
    Page->>WS_API: GET /api/workspace-settings
    WS_API->>WS_Svc: getWorkspaceSettings()
    WS_Svc->>DB: findUnique WorkspaceSetting
    alt Row missing
        WS_Svc->>DB: create WorkspaceSetting
    end
    WS_Svc-->>Page: "{ autoArchiveAfterDays, clientDefaultViewMode, clientHideSubtasks }"
    Page-->>IU: Render ClientViewSettingsSection

    IU->>Page: Change view mode / toggle subtasks
    Page->>WS_API: PATCH /api/workspace-settings
    WS_API->>WS_Svc: updateWorkspaceSettings(data)
    WS_Svc->>DB: update WorkspaceSetting

    Note over VS_Svc,DB: When a CU logs in for the first time
    VS_Svc->>DB: findFirst ViewSetting (none found)
    VS_Svc->>WS_Svc: resolveInitialDisplayDefaults()
    WS_Svc->>DB: findUnique WorkspaceSetting
    DB-->>WS_Svc: clientDefaultViewMode, clientHideSubtasks
    WS_Svc-->>VS_Svc: "{ viewMode, showSubtasks }"
    VS_Svc->>DB: create ViewSetting (seeded with workspace defaults)

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_{Reviews (3): Last reviewed commit: "fix issues" | Re-trigger Greptile}

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[priosshrsth]

@greptileai review the pr again.