fix(hentaifoundry): inject host-only PHPSESSID/CSRF duplicates + extension preserves browser hostOnly

Operator-flagged 2026-05-27: HF source check 401'd on
`HEAD /?enterAgree=1` even with valid login cookies. Root cause is the
combination of (1) gallery-dl's HF extractor checking
`self.cookies.get("PHPSESSID", domain="www.hentai-foundry.com")` with
`requests`' EXACT domain matching, and (2) the extension's cookies.js
forcibly rewriting every captured cookie to a leading-dot subdomain-wide
form. HF's PHPSESSID is browser-stored as host-only on
`www.hentai-foundry.com`; the rewrite re-anchored it to
`.hentai-foundry.com`, which `cookies.get(...)` no longer matches even
though the cookie is still sent on actual HTTP requests (RFC 6265
subdomain rules). The extractor falls into its unauthenticated
`?enterAgree=1` fallback, which 401s (Cloudflare or HF's anti-bot HEAD
gating).

Two-part fix, no operator action required for existing stored cookies:

1. **Backend** (`credential_service._augment_cookies`) — refactored from
   the subscribestar-only single function into a per-platform dispatcher.
   New `_augment_hentaifoundry` parses the materialized netscape file
   and, for each `.hentai-foundry.com` entry whose name is PHPSESSID or
   YII_CSRF_TOKEN, appends a host-only duplicate
   (`www.hentai-foundry.com\tFALSE\t...`). Originals preserved. Three
   new tests pin: injection fires + originals preserved; idempotent
   when host-only already exists; doesn't touch unrelated cookies
   (e.g. `_ga`).

2. **Extension** (`cookies.js`) — `toNetscapeFormat` now respects
   `c.hostOnly` from the browser instead of blindly forcing a
   leading-dot subdomain-wide form. Host-only cookies are written with
   the bare host + FALSE flag; non-host-only cookies retain the
   leading-dot + TRUE form. Forward-compat — fresh captures from
   v1.0.5+ no longer need the backend's host-only duplication.
   Extension bumped 1.0.4 → 1.0.5; manifest + package.json in lockstep.

After deploy: the next HF source check on the operator's already-stored
cookies will succeed because the materialized cookies.txt now contains
host-only PHPSESSID. No browser re-export needed.

extension/lib/cookies.js

@@ -38,11 +38,33 @@ function deduplicateCookies(cookies) {
 function toNetscapeFormat(cookies) {
   const lines = ['# Netscape HTTP Cookie File'];
   for (const c of cookies) {
-    let domain = c.domain.replace(/^\.?www\./, '.');
-    if (!domain.startsWith('.')) domain = '.' + domain;
+    // Preserve the browser's actual scope. Earlier versions rewrote
+    // every cookie to a leading-dot subdomain-wide form, which broke
+    // gallery-dl's HF extractor: its `cookies.get(name,
+    // domain="www.hentai-foundry.com")` does EXACT domain matching and
+    // missed host-only PHPSESSID rewritten to `.hentai-foundry.com`.
+    // Operator-flagged 2026-05-27. Backend `_augment_cookies` covers
+    // the already-stored cookies; this fix is forward-compat for fresh
+    // captures.
+    //
+    // Cookie storage semantics (Firefox):
+    //   c.hostOnly === true   → cookie set without a Domain= attribute;
+    //                           applies to the exact host only.
+    //   c.hostOnly === false  → cookie set with Domain=X; applies to
+    //                           that domain and its subdomains.
+    //
+    // Netscape format:
+    //   leading-dot domain + TRUE flag → subdomain-wide
+    //   bare-host  domain + FALSE flag → host-only
+    const hostOnly = c.hostOnly === true;
+    let domain = c.domain;
+    if (!hostOnly && !domain.startsWith('.')) {
+      domain = '.' + domain;
+    }
+    const subdomainFlag = hostOnly ? 'FALSE' : 'TRUE';
     const secure = c.secure ? 'TRUE' : 'FALSE';
     const expiration = c.expirationDate ? Math.floor(c.expirationDate) : 0;
-    lines.push([domain, 'TRUE', c.path || '/', secure, String(expiration), c.name, c.value].join('\t'));
+    lines.push([domain, subdomainFlag, c.path || '/', secure, String(expiration), c.name, c.value].join('\t'));
   }
   return lines.join('\n');
 }

extension/manifest.json

@@ -1,7 +1,7 @@
 {
   "manifest_version": 3,
   "name": "FabledCurator",
-  "version": "1.0.4",
+  "version": "1.0.5",
   "description": "Export cookies from supported platforms to FabledCurator and add creators as sources in one click.",
 
   "browser_specific_settings": {

extension/package.json

@@ -1,6 +1,6 @@
 {
   "name": "fabledcurator-extension",
-  "version": "1.0.4",
+  "version": "1.0.5",
   "private": true,
   "description": "Firefox extension for FabledCurator",
   "scripts": {