[codex] Fix Brand Kit modal intent handling

[PerishCode]

Why

This PR fixes Brand Kit modal intent handling on top of #4260.

The pain being addressed is interaction correctness: modal-triggered Brand Kit intents should route through the Brands tab consistently instead of being dropped or handled at the wrong time.

What users will see

In the #4260 Brand Kit flow, modal intent handling should be more reliable when opening or refreshing the Brands tab path.

Surface area

• UI — Brand Kit modal intent handling in apps/web
• Keyboard shortcut — new or changed
• CLI / env var — new od subcommand or flag, new tools-dev / tools-pack / tools-pr flag, or new OD_* env var
• API / contract — new /api/* endpoint, new SSE event, or changed shape in packages/contracts
• Extension point — new entry under skills/, design-systems/, design-templates, or craft/, or change to the skills protocol
• i18n keys — added new translation keys (see TRANSLATIONS.md for the locale workflow)
• New top-level dependency — adding any new entry to the root package.json (dependencies or devDependencies); workspace-package package.json files are out of scope.
• Default behavior change — Brand Kit modal intent behavior changes in the Agent-driven brand extraction + two-loop memory overhaul #4260 flow
• None — internal refactor, docs, tests, or translation update only

Screenshots

Not attached. Intent handling is covered by the branch test changes.

Bug fix verification

Skipped. The branch includes focused component test coverage, but I did not rerun it locally while opening this PR.

Validation

• Not run locally; PR opened from the existing branch for review.

[lefarcen]

🧪 This PR changes a user-facing interaction path, so it should go through a manual QA pass before merge — please hold off self-merging for now; we’ll loop QA in once it is merge-ready (and after any needed design/product sign-off).

[mrcfps]

@PerishCode I reviewed the changed BrandsTab intent gating and the added regression coverage around hidden-view intent queuing and re-entry modal behavior. The updated flow now holds the one-shot Brand Kit intent until the Brands view is active again and avoids reopening it after leaving the Brands tab. Thanks for tightening this interaction path and adding focused tests here ✨

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