feat(frontend): add the warehouse dashboard tab

[mengw15]

What changes were proposed in this PR?

The warehouse dashboard tab (#6933), mirroring the computing-unit tab throughout. It sits on top of the merged API client (#7820) and ships the components and the page together, per review.

Everything is gated behind the backend's warehouse feature flag: GET /warehouse/status drives both the sidebar entry and the page, so deployments with the flag off (the default) see no change at all.

• user-warehouse page + routing — a "Warehouses" sidebar entry, shown only while the flag is on, plus the route. The route itself is unguarded on purpose: a deep link with the flag off lands on the page's disabled notice instead of silently redirecting, and the backend enforces the flag on every endpoint regardless. The page lists the user's warehouses in a virtual-scrolled list, opens the create dialog, refreshes after create/delete, and distinguishes the three states the flag request can leave it in: enabled (the list), disabled (a notice that the deployment has the feature off), and failed (a retry button, instead of the misleading "disabled" notice).
• warehouse-create-modal — embedded through [(visible)] and returning its result through (warehouseCreated), the same contract as ComputingUnitCreateModalComponent. It disables Create on an empty name, guards against double submission, stays open on failure so the name can be corrected, and abandons the attempt when the dialog closes — Cancel actually cancels, and a late response cannot close a dialog the user has already reopened.
• warehouse-metadata — the read-only details dialog the row name opens: name, owner, flavor, created. The Lakekeeper catalog name is deliberately absent; it locates data inside storage the user has no access to until warehouses live in their own bucket (Per-user BYO-S3 warehouses #6870, Phase 1).
• user-warehouse-list-item — the row card, matched to the computing-unit row down to its 64px content height, hover-revealed delete, id column and metadata columns. Warehouses have no status, metrics, rename or sharing, so the computing-unit row's badge, progress bars, inline rename and share control have no counterpart.

Screenshots and Videos:

Screen.Recording.2026-08-27.at.1.25.59.PM.mov

Any related issues, documentation, discussions?

Closes #6933. Part of #6870; the on-canvas picker follows in #7817.

How was this PR tested?

• 66 Vitest tests across 7 spec files pass, covering the three components, the page, the dashboard sidebar gating, and the (already merged) services.
  • Whole suite as CI runs it: yarn test:ci
  • Just this change: ng test --watch=false --include "src/app/common/component/warehouse-*/**/*.spec.ts" --include "src/app/dashboard/component/user/user-warehouse/**/*.spec.ts" --include "src/app/dashboard/component/dashboard.component.spec.ts"
• The dialogs are driven through their own controls — the Create and Cancel buttons, the Enter key, the text input — so the template bindings are verified too, not just component methods.
• Failure paths verified rather than assumed: each behaviour was broken on purpose and the suite confirmed to fail for the expected reason before being restored.
• Exercised end to end against a local deployment with the flag on, backed by live Lakekeeper and MinIO — screenshots and a video in the description above.

Was this PR authored or co-authored using generative AI tooling?

Generated-by: Claude Code (claude-opus-5, claude-fable-5)

[github-actions]

Automated Reviewer Suggestions

Based on the git blame history of the changed files, we recommend the following reviewers:

• Contributors with relevant context: @Neilk1021
  You can notify them by mentioning @Neilk1021 in a comment.

[Copilot]

Pull request overview

Adds reusable warehouse creation/details dialogs and a dashboard row card for the upcoming warehouse management page.

Changes:

• Adds warehouse creation with loading, error, and cancellation handling.
• Adds a read-only warehouse metadata dialog.
• Adds a tested warehouse list-item card with delete and metadata actions.

Reviewed changes

Copilot reviewed 10 out of 10 changed files in this pull request and generated 4 comments.

Show a summary per file

File	Description
warehouse-create-modal.component.ts	Implements warehouse creation behavior.
warehouse-create-modal.component.html	Defines the creation dialog UI.
warehouse-create-modal.component.scss	Styles the creation form.
warehouse-create-modal.component.spec.ts	Tests creation and cancellation flows.
warehouse-metadata.component.ts	Implements the metadata dialog.
warehouse-metadata.component.spec.ts	Tests displayed metadata.
user-warehouse-list-item.component.ts	Implements row-card behavior.
user-warehouse-list-item.component.html	Defines row content and actions.
user-warehouse-list-item.component.scss	Styles the warehouse row.
user-warehouse-list-item.component.spec.ts	Tests rendering and interactions.

---

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[codecov-commenter]

Codecov Report

❌ Patch coverage is 98.41270% with 3 lines in your changes missing coverage. Please review.
✅ Project coverage is 93.43%. Comparing base (646e460) to head (a106b6d).

Files with missing lines	Patch %	Lines
.../user/user-warehouse/user-warehouse.component.html	91.42%	3 Missing ⚠️

Additional details and impacted files

@@             Coverage Diff              @@
##               main    #8005      +/-   ##
============================================
+ Coverage     93.42%   93.43%   +0.01%     
  Complexity     4703     4703              
============================================
  Files          1180     1187       +7     
  Lines         47766    47954     +188     
  Branches       5321     5329       +8     
============================================
+ Hits          44623    44808     +185     
- Misses         1699     1702       +3     
  Partials       1444     1444              

Flag	Coverage Δ		*Carryforward flag
access-control-service	81.00% <ø> (ø)		Carriedforward from 646e460
agent-service	99.32% <ø> (ø)		Carriedforward from 646e460
amber	89.58% <ø> (ø)		Carriedforward from 646e460
computing-unit-managing-service	73.67% <ø> (ø)		Carriedforward from 646e460
config-service	86.73% <ø> (ø)		Carriedforward from 646e460
file-service	87.46% <ø> (ø)		Carriedforward from 646e460
frontend	95.92% <98.41%> (+0.02%)	⬆️
notebook-migration-service	79.31% <ø> (ø)		Carriedforward from 646e460
pyamber	97.78% <ø> (ø)		Carriedforward from 646e460
workflow-compiling-service	77.19% <ø> (ø)		Carriedforward from 646e460

*This pull request uses carry forward flags. Click here to find out more.

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[kunwp1]

Can you add a screenshot or a video since it's introducing a GUI?

[mengw15]

Can you add a screenshot or a video since it's introducing a GUI?

This is the second of three PRs. It introduces the GUI components, but they aren't wired into the dashboard yet, so they won't be visible from this PR alone. The third PR will assemble and render them on the page.

I can add the screenshot/video here from the full implementation if that's more helpful.

[kunwp1]

I think it's better to assemble the second and third PR if you have the implementation.

[mengw15]

Assembled — this PR now carries the whole tab: the page, sidebar entry and route on top of the components, all gated behind the warehouse feature flag. Screenshots and a video are in the description above.

[Copilot]

Pull request overview

Copilot reviewed 19 out of 19 changed files in this pull request and generated 1 comment.

[Copilot]

Pull request overview

Copilot reviewed 19 out of 19 changed files in this pull request and generated 2 comments.