The Store is now the centre of capability discovery — provider
configuration moves out of Settings into the Store itself.
Three changes work together:
1. Source filter chips next to the existing status chips:
All sources / Native / MCP / n8n. Applied client-side after
the hub returns results so toggling is instant. The result
count and the "Clear filters" reset both account for the
source filter too.
2. Per-card provenance pill (`_ProvenancePill`): shows whether
each entry is native, mcp · <provider>, or n8n · <provider>
so the operator can triage the source at a glance — same
role the "verified" badge plays in commercial app stores.
3. `_RecommendedSourcesStrip` replaces the older
`_FederationNudge`. Renders curated public MCP servers
(DeepWiki, Semgrep) as one-click cards with an inline
`[+ Add]` button — no Settings detour, no form. Both servers
are HTTPS Streamable-HTTP, no API key, no subprocess.
Useful AI was considered but its 340+ tools would drown the
index — kept out of the curated list. The strip auto-hides
the moment any federated entry exists.
Removed the now-orphaned storeFederationNudge* ARB keys.
Signed-off-by: flemming-it <stefan.a.flemming@googlemail.com>
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