add in-country-validated Akamai SNIs (IR)

[myleshorton]

Summary

Adds 14 in-country-validated SNIs to the Akamai provider's masquerade pool. Source: Keith (Psiphon ops, 2026-05-24), based on aggregated client telemetry from Iran.

Akamai serves the same default cert (a248.e.akamai.net) regardless of incoming SNI, so these names are pure DPI cover — the inner Host header drives property routing as before. The Iranian domestic names are particularly resilient — IR can't block them without breaking core domestic services.

SNIs added

Category	SNI
Python ecosystem	python.org, pypi.org, www.python.org, www.pypi.org, files.pythonhosted.org, registry.npmjs.org
US tech giants	google.com, www.google.com, go.microsoft.com
Iranian domestic	snapp.ir (ride-hailing), varzesh3.com (sports), aparat.com (video), bmi.ir (Bank Melli), digikala.com (e-commerce)

Consumer

radiance#488 extends AkamaiCandidates to consume SNIsForProvider(cfg, "akamai") and mix named SNIs alongside the existing bare-SNI strategy. Each Akamai IP gets 1 bare-SNI candidate + up to 3 named-SNI candidates drawn at random from the pool.

Why entries have empty ipaddress

SNIsForProvider only consumes the Domain field, so these are SNI-pool-only entries. The scanner pairs them with Akamai IPs discovered at probe time. CandidatesFromConfig is the only path that would use the ipaddress, and it's gated by KnownSample > 0 (off by default in radiance's pool config).

Verification

Smoke test (radiance ./cmd/meek-client-smoke/) confirms named-SNI candidates round-trip end-to-end against the deployed meek server:

INFO got fronts count=3 first_ip=184.28.105.132 first_sni=a248.e.akamai.net
{
  "origin": "139.162.181.47"
}
✅ end-to-end meek client smoke test PASSED

🤖 Generated with Claude Code

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[myleshorton]

Closing — wrong section. The generator regenerates the masquerades list daily from a fresh CDN-IP scan in lantern-cloud/cmd/update_masquerades, so manual masquerade-list additions get wiped. The durable home for SNI cover is provider_map.yaml's akamai.frontingsnis.default.arbitrarysnis. Re-opening over there.