fix(client): refresh only loaded catalogs on location events

[Hona]

createData re-fetches a location's catalog on every catalog / agent / command / skill / reference / integration / websearch / mcp.* event for any Location the server emits about — including Locations this client never opened. On a shared server that is every Location another client booted. A Desktop capture showed 1,679 request jobs in 99 s across 118 directories from this path alone; the TUI does the same work silently because Bun has no per-origin socket limit.

Change

flowchart LR
  E[location event] --> I[invalidate catalog]
  I --> G{loaded? read before or reading now}
  G -->|yes| R[re-fetch]
  G -->|no| N[nothing: next explicit sync fetches fresh]

Loading

• locationResource gains loaded(ref): store.location[key][field] !== undefined || sync.has(key). This is the test config.updated was already doing inline (data.ts:1219-1222 on v2), now named and applied to every per-location refresh, including the credential.* loop over stored location keys.

const resync = (...resources) =>
  resources.forEach((resource) => {
    resource.invalidate(location)
    if (resource.loaded(location)) refresh(() => resource.sync(location))
  })

• Websearch providers have no explicit reader anywhere; the TUI's integration dialog (dialog-integration.tsx:102) relies on events to fill them. That refresh is gated on the location having been opened (info present after syncInfo) instead of on a prior read, so first population still happens.

TUI

No behaviour change for what the TUI displays:

Path	Why unchanged
Own directory (context/location.tsx → location.sync)	reads all 12 catalogs on open, so every one is loaded()
Session tabs in other dirs	syncInfo + vcs.sync only; vcs.branch.updated is a store write, never a fetch
Skill / integration dialogs	explicit sync() on open
Web-search providers	populated on first event for opened locations (covered by a new test)
mini/catalog.shared.ts	raw SDK, not the store

What it stops doing: re-fetching agents/models/MCP for Locations other clients booted on the same server. It never displayed that data.

Companion to #47441 (app-side).

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