Fixes for legacy accounts

[leonardocustodio]

• RPC-gateway now serves the People chain - createRpcChainProvider dials each curated chain's configured RPC (relay, Asset Hub, People) instead of Asset Hub only, so username→account resolution works in gateway mode.
• smoldot People warm-keep - the protocol iframe pre-warms a finalized People-chain client in the background (waitForPeopleFinalized) so legacy-account auth reads don't race a cold parachain sync.
• Backend-aware chain advertisement - isRemoteChainSupported now advertises only what the active backend can actually serve (single source of truth: getActiveGatewayChains), so the host can't promise a chain the gateway can't provide and leave a dApp hanging.

[github-actions]

Bundle Size Report

Chunks over 500 KB:

File	Raw	Brotli	Gzip
host/assets/paseo.smol-DboPaEh1.json	1.84 MB	941.7 KB	1019.4 KB
host/assets/paseo-people-next.smol.json	3.36 MB	1.68 MB	1.82 MB
host/assets/previewnet.smol.json	810.7 KB	116.0 KB	149.3 KB
host/assets/smoldot_worker.js	2.92 MB	2.19 MB	2.20 MB
Total	10.35 MB (-105 B)	5.38 MB (-493 B) (-48%)	5.72 MB (-686 B)

All files

File	Raw	Brotli	Gzip
host/.well-known/apple-app-site-association	738 B	738 B	738 B
host/.well-known/assetlinks.json	986 B	986 B	986 B
host/assets/auth.js	462.4 KB	175.5 KB (+180 B)	221.6 KB
host/assets/blake2.js	10.2 KB	3.2 KB (+7 B)	3.7 KB
host/assets/bridge.js	5.4 KB	1.8 KB (-15 B)	2.1 KB (+5 B)
host/assets/browser.js	22.9 KB	7.6 KB	8.6 KB
host/assets/client.js	93.0 KB	27.4 KB (+4 B)	30.1 KB (+2 B)
host/assets/container.js	53.9 KB (+5 B)	13.1 KB (-3 B)	14.8 KB (-1 B)
host/assets/dist.js	28.8 KB (+3.9 KB)	10.0 KB (+2.3 KB)	11.1 KB (+2.5 KB)
host/assets/dist.js	20.6 KB (-4.3 KB)	4.8 KB (-2.9 KB)	5.4 KB (-3.2 KB)
host/assets/dist.js	24.9 KB	7.7 KB	8.6 KB
host/assets/dotli-debug-bus.js	495 B	495 B	495 B
host/assets/index.css	46.6 KB	7.2 KB	8.1 KB
host/assets/index.js	103.0 KB (+116 B)	27.8 KB	32.3 KB (-4 B)
host/assets/log.js	972 B	972 B	972 B
host/assets/manifest.js	22.6 KB	7.3 KB (-36 B)	8.0 KB
host/assets/mode.js	1.7 KB	600 B	664 B
host/assets/nanoevents.js	215 B	215 B	215 B
host/assets/network.js	3.9 KB (+158 B)	1.4 KB (+33 B)	1.6 KB (+48 B)
host/assets/nova-scale.js	6.7 KB	2.6 KB	2.9 KB
host/assets/panel.js	84.9 KB	23.1 KB (+9 B)	26.3 KB (+1 B)
host/assets/paseo.smol-DboPaEh1.json	1.84 MB	941.7 KB	1019.4 KB
host/assets/paseo-people-next.smol.json	3.36 MB	1.68 MB	1.82 MB
host/assets/paseo.smol.json	129.8 KB	22.9 KB	31.8 KB
host/assets/previewnet.smol.json	810.7 KB	116.0 KB	149.3 KB
host/assets/resolve.js	154 B	154 B	154 B
host/assets/rolldown-runtime.js	694 B	694 B	694 B
host/assets/rpc-resolve.js	2.5 KB	1.0 KB (-11 B)	1.2 KB (+4 B)
host/assets/shared-mode.js	1.9 KB	789 B (-3 B)	892 B (-2 B)
host/assets/smoldot_worker.js	2.92 MB	2.19 MB	2.20 MB
host/assets/spans.js	1.6 KB	765 B	914 B
host/assets/src.js	1.9 KB	890 B (-1 B)	1001 B (+2 B)
host/assets/styles.css	15.1 KB	3.2 KB	3.8 KB
host/assets/substrate-client.js	7.2 KB	2.7 KB (-1 B)	3.0 KB (-4 B)
host/assets/ws.js	25.8 KB	8.4 KB (-10 B)	9.1 KB
host/dotli.png	11.5 KB	11.5 KB	11.5 KB
host/favicon.svg	1.8 KB	1.8 KB	1.8 KB
host/host-sw.js	2.9 KB	1.1 KB (+1 B)	1.3 KB (+4 B)
host/icon-192.png	12.5 KB	12.5 KB	12.5 KB
host/icon-512.png	42.8 KB	42.8 KB	42.8 KB
host/index.html	20.3 KB	4.5 KB (-4 B)	5.5 KB (+2 B)
host/manifest.webmanifest	441 B	441 B	441 B
host/workbox.js	14.8 KB	4.6 KB	5.1 KB
sandbox/app-sw.js	8.7 KB	2.8 KB (+4 B)	3.2 KB (+3 B)
sandbox/assets/bitswap-bridge.js	840 B	840 B	840 B
sandbox/assets/fetch.js	3.4 KB	1.2 KB (+1 B)	1.4 KB
sandbox/assets/index.css	46.6 KB	7.2 KB	8.1 KB
sandbox/assets/index.js	118.1 KB	33.7 KB (+3 B)	39.7 KB (-1 B)
sandbox/favicon.svg	1.8 KB	1.8 KB	1.8 KB
sandbox/index.html	1.7 KB	579 B (+1 B)	786 B
Total	10.35 MB (-105 B)	5.38 MB (-493 B) (-48%)	5.72 MB (-686 B)

_{Commit: 180791c}

[github-actions]

⚡ Performance Report

⚠️ No baseline found on main. This PR's results are recorded but cannot be compared.
Merge to main to establish a baseline.

[github-actions]

❌ E2E Product suite failed on 4353de963c0e19a307ea6a5d9c8ac8084d361389 — 0 passed, 0 failed, 0 skipped.

Failed tests:

Logs: https://github.com/paritytech/dotli-community/actions/runs/27558585268
Artifacts: e2e-product-results (uploaded above) — open the failed test's trace.zip with npx playwright show-trace.