Teams PR 3 — remaining vue + skeletons

[n-lark]

PR 3 — remaining vue + skeletons

Switcher is done in PR 1; this PR migrates the rest.

• Team settings header and any other team-scoped consumers read useDataFarmTeamsStore().current via ensureLoaded(); remove local fetching.

• Skeletons for the team header/settings while isLoading.

• Delete now-dead team fetching in context.js/account.js.

• Remaining team-scoped components consume the store; no direct teamApi calls.

• Skeletons shown during load.

Test plan

• Load app cold → team list renders from store, skeleton shown briefly.
• Rename team in another session/tab → t/updated updates name here without reload.
• Get removed from a team elsewhere → redirected to /.
• Switch teams → store clear() + reload, no stale data.