From 34989f94b307a36821457900717d249d0eb984e4 Mon Sep 17 00:00:00 2001
From: Local Dev <dev@localhost>
Date: Tue, 27 Oct 2026 15:35:03 +0200
Subject: [PATCH] Theseus 0.3.117: ICANN hosts that fail DNS show a DNS error,
 not a BCNR-register pitch
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When a navigation hits ERR_NAME_NOT_RESOLVED and the TLD is a well-known
ICANN one (.com/.net/.io/country codes/…), Theseus now shows the DNS-
flavoured 'This name didn't resolve' page instead of the BCNR-flavoured
'That name isn't registered' page. The BCNR page framed the failure as
'nobody has claimed this on-chain name, want to register it on Sirius?'
— confusing when the user typed a real .com whose DNS is temporarily
broken (hostile Wi-Fi AAAA mangling is the usual cause). The DNS page
leads with retry and search instead, and still mentions BCNR was tried.

Non-ICANN TLDs (.bch, .x, …) keep the register-first framing. The
TLD set is a static whitelist of the common ones — covers the long
tail of real sites without being exhaustive. Add more as needed.
---
 main.js      | 29 +++++++++++++++++++++++++----
 package.json |  2 +-
 2 files changed, 26 insertions(+), 5 deletions(-)

diff --git a/main.js b/main.js
index a2114d4b..7cd79768 100644
--- a/main.js
+++ b/main.js
@@ -5016,12 +5016,33 @@ const ERROR_CODE_IGNORE = new Set([-3, -20]);
 //    -7  ERR_TIMED_OUT
 //    -21 ERR_NETWORK_CHANGED
 const ERROR_UNREACHABLE = new Set([-102, -101, -118, -100, -7, -21]);
+// Well-known ICANN TLDs where "DNS couldn't resolve" is the far likelier
+// story than "the user wanted a BCNR name on this TLD" — frames the error
+// as a reachability issue (retry, check DNS) rather than as a BCNR
+// register-this-name invitation.
+const COMMON_ICANN_TLDS = new Set([
+  "com", "net", "org", "edu", "gov", "mil", "int", "info", "biz", "name", "pro",
+  "io", "co", "me", "tv", "app", "dev", "ai", "cloud", "online", "site", "store",
+  "us", "uk", "de", "fr", "it", "es", "pl", "nl", "be", "ch", "at", "se", "no",
+  "fi", "dk", "ie", "pt", "gr", "cz", "ro", "hu", "ua", "ru", "by", "kz",
+  "jp", "cn", "tw", "hk", "kr", "sg", "my", "th", "vn", "in", "id", "ph",
+  "au", "nz", "br", "mx", "ar", "cl", "co", "pe", "ve", "ca", "za", "ng", "eg",
+  "il", "ae", "sa", "tr", "ir", "pk",
+]);
+function isLikelyIcannHost(host) {
+  const t = tldOf(host);
+  return !!t && COMMON_ICANN_TLDS.has(t);
+}
 function pickErrorKind(code, host) {
   if (code === -105) {
-    // Name didn't resolve. If the host is BCNR-eligible (has a real TLD),
-    // that also means BCNR had no record — otherwise resolveHost/loadBns
-    // would have served something. Treat as "not registered" to promote
-    // the register-on-Sirius action.
+    // Name didn't resolve. For well-known ICANN TLDs (.com/.net/.io/…),
+    // frame it as a DNS failure — leading with "register on BCNR" would
+    // confuse the user whose site is almost certainly a clearnet one and
+    // whose DNS is temporarily broken (hostile Wi-Fi AAAA mangling, etc.).
+    if (isLikelyIcannHost(host)) return "name-unreachable";
+    // Otherwise the host is a BCNR-eligible non-ICANN TLD (.bch, .x, …):
+    // BCNR had no record and no clearnet DNS answer either — treat as
+    // "not registered" to promote the register-on-Sirius action.
     return isBnsHost(host) ? "name-not-registered" : "name-unreachable";
   }
   if (ERROR_UNREACHABLE.has(code)) return "unreachable";
diff --git a/package.json b/package.json
index e9fca27e..5794533b 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "theseus-navigator",
-  "version": "0.3.116",
+  "version": "0.3.117",
   "license": "MPL-2.0",
   "description": "Theseus Navigator — a browser that follows the thread. By Silent Mode, a Deviant project.",
   "author": "Silent Mode",