feat: add connection error messages and app link

[justraman]

fixes: #106

[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]

Bundle Size Report

Chunks over 500 KB:

File	Raw	Brotli	Gzip
host/assets/paseo.smol-DboPaEh1.json	1.84 MB	941.7 KB	1.05 MB
host/assets/paseo-people-next.smol.json	3.36 MB	1.68 MB	1.92 MB
host/assets/smoldot.js	3.05 MB	2.27 MB (-1 B)	2.34 MB
host/assets/smoldot_worker.js	3.02 MB	2.26 MB	2.33 MB
host/assets/truapi_server_bg.wasm	7.20 MB	5.29 MB	5.56 MB
host/assets/wasm/web/truapi_server_bg.wasm	7.20 MB	5.29 MB	5.56 MB
Total	26.85 MB (+31.6 KB)	18.07 MB (+7.5 KB) (-33%)	19.17 MB (+8.7 KB)

All files

File	Raw	Brotli	Gzip
host/.well-known/apple-app-site-association	505 B	505 B	505 B
host/.well-known/assetlinks.json	2.1 KB	343 B	427 B
host/assets/_md.js	6.3 KB	2.6 KB	2.8 KB
host/assets/blake2.js	11.7 KB	4.1 KB	4.7 KB
host/assets/bridge.js	125.0 KB	30.0 KB (+52 B)	36.0 KB (+1 B)
host/assets/browser.js	22.9 KB	7.6 KB	8.6 KB
host/assets/client.js	10.2 KB	3.3 KB	3.7 KB
host/assets/dotli-debug-bus.js	708 B	708 B	708 B
host/assets/get-sync-provider.js	2.7 KB	1.1 KB (-2 B)	1.2 KB
host/assets/hex.js	160 B	160 B	160 B
host/assets/index.js	159.9 KB (+2.0 KB)	42.1 KB (+724 B)	50.5 KB (+790 B)
host/assets/index.css	55.3 KB (+252 B)	8.6 KB (+29 B)	9.9 KB (+56 B)
host/assets/manifest.js	23.3 KB	7.4 KB	8.2 KB
host/assets/network.js	6.3 KB	2.2 KB	2.5 KB
host/assets/panel.js	76.3 KB	20.6 KB (-21 B)	23.2 KB (-1 B)
host/assets/paseo.smol-DboPaEh1.json	1.84 MB	941.7 KB	1.05 MB
host/assets/paseo-people-next.smol.json	3.36 MB	1.68 MB	1.92 MB
host/assets/paseo.smol.json	25.2 KB	5.6 KB	7.2 KB
host/assets/previewnet.smol.json	63.7 KB	7.6 KB	13.4 KB
host/assets/proofs.js	29.3 KB	8.6 KB (-1 B)	9.5 KB (+3 B)
host/assets/resolve.js	158 B	158 B	158 B
host/assets/rolldown-runtime.js	716 B	716 B	716 B
host/assets/rpc-resolve.js	2.7 KB	1.1 KB (-11 B)	1.3 KB
host/assets/scale-ts.js	4.8 KB	2.0 KB	2.2 KB
host/assets/smoldot.js	3.05 MB	2.27 MB (-1 B)	2.34 MB
host/assets/smoldot_worker.js	3.02 MB	2.26 MB	2.33 MB
host/assets/spans.js	2.4 KB	1.0 KB	1.2 KB
host/assets/src.js	84.2 KB	26.5 KB (+62 B)	29.6 KB
host/assets/styles.css	15.3 KB	3.3 KB	3.9 KB
host/assets/substrate-client.js	5.8 KB	2.2 KB (-5 B)	2.5 KB (+2 B)
host/assets/truapi_server_bg.wasm	7.20 MB	5.29 MB	5.56 MB
host/assets/twoX.js	2.8 KB	1022 B	1.1 KB
host/assets/utils.js	3.5 KB	1.4 KB	1.5 KB
host/assets/wasm/web/README.md	13.4 KB	13.4 KB	13.4 KB
host/assets/wasm/web/package.json	371 B	371 B	371 B
host/assets/wasm/web/truapi_server.d.ts	12.6 KB	12.6 KB	12.6 KB
host/assets/wasm/web/truapi_server.js	49.7 KB	7.9 KB	9.3 KB
host/assets/wasm/web/truapi_server_bg.wasm	7.20 MB	5.29 MB	5.56 MB
host/assets/wasm/web/truapi_server_bg.wasm.d.ts	4.0 KB	4.0 KB	4.0 KB
host/assets/web.js	18.2 KB	4.6 KB (+1 B)	5.1 KB (+1 B)
host/assets/worker-runtime.js	28.9 KB (+28.8 KB)	6.8 KB (+6.7 KB)	7.8 KB (+7.7 KB)
host/assets/worker-runtime.js	106 B	106 B	106 B
host/assets/ws.js	23.1 KB	7.5 KB (-11 B)	8.3 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	3.1 KB	1.2 KB (-2 B)	1.4 KB (-9 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	29.7 KB (+234 B)	5.6 KB (+81 B)	6.9 KB (+75 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	9.9 KB	3.2 KB (-9 B)	3.6 KB (+1 B)
sandbox/assets/bitswap-bridge.js	840 B	840 B	840 B
sandbox/assets/fetch.js	3.4 KB	1.2 KB	1.4 KB
sandbox/assets/index.css	55.3 KB (+252 B)	8.6 KB (+29 B)	9.9 KB (+56 B)
sandbox/assets/index.js	123.5 KB	34.9 KB (-92 B)	40.7 KB (-1 B)
sandbox/favicon.svg	1.8 KB	1.8 KB	1.8 KB
sandbox/index.html	1.7 KB	581 B (-2 B)	786 B (+1 B)
Total	26.85 MB (+31.6 KB)	18.07 MB (+7.5 KB) (-33%)	19.17 MB (+8.7 KB)

_{Commit: 6163601}

[github-actions]

❌ E2E Product suite failed on c3a7e8f5ee065ae0c6522a25254deca3017ee9aa — suite did not produce results.

Failed tests:

• (no results.json — suite likely crashed before any tests ran)

Logs: https://github.com/paritytech/dotli-community/actions/runs/34233851072
Artifacts: e2e-product-results (uploaded above) — open the failed test's trace.zip with npx playwright show-trace.