v1.91.4.0 fix: Windows Opera cookie import wave (#2980, refs #2957) (#2987)

* fix: support Windows Opera and Opera GX cookie imports

Fixes #2957

* fix: repair Windows cookie decryption and make Opera import failures actionable

- strip the SHA-256(host_key) prefix Chromium adds to v10 values (DB meta v24+) on Windows
- keep receipts and name `$B handoff` recovery for App-Bound rows in browsers without native extraction
- explain missing browsers, missing profiles and ambiguous profile selection with next steps
- add windowsNative/resolveBrowserInfo, the operagx alias and sorted failure reasons in CLI output
- cover the Node server runtime with a real-DPAPI Windows test

* docs: document Windows Opera cookie import and guard browser lists against drift

* chore: file cookie-import follow-ups from the Opera fix wave review

* test: keep Opera receipt tests independent of the shared key cache

* test: declare generated gstack/llms.txt as a command-reference input for PR selection

* chore: release v1.91.4.0

* test: reconstruct the historical cookie-workflow approval after the Opera BROWSER.md additions

* test: run the real-DPAPI Windows check with the runner's environment

PowerShell launched with a stripped environment took ~18-21s on the Windows
runner (measured on a throwaway diagnostics run), past dpapiDecrypt's 10s
deadline; with the full environment it returns in ~0.3s. Only APPDATA is
redirected to the fixture's Opera root.

---------

Co-authored-by: Matt Van Horn <455140+mvanhorn@users.noreply.github.com>

browse/sections/command-list.md

@@ -93,7 +93,7 @@ Refs are invalidated on navigation — run `snapshot` again after `goto`.
 | `click <sel>` | Click element |
 | `cookie <name>=<value>` | Set cookie on current page domain |
 | `cookie-import <json>` | Import cookies from JSON file |
-| `cookie-import-browser [browser] [--domain d] [--profile p] [--all] [--clear-storage] [--verify-auth]` | Copy cookies from chrome, chromium, brave, edge, or macOS-only comet, arc, dia. Omitted browser retains legacy comet; select the intended browser explicitly. --domain requires a matching current page; no scope flag opens the picker. --profile is the source directory; ambiguous profiles require selection. --all explicitly selects every non-expired cookie and cannot accompany --domain or --clear-storage. Storage is preserved unless --clear-storage resets captured-origin localStorage (shared across context tabs) and target-tab sessionStorage. --verify-auth requires daemon GSTACK_COOKIE_AUTH_SELECTOR and GSTACK_COOKIE_AUTH_EXPECTED_IDENTITY before startup; missing config rejects before mutation. Verified means an exact visible identity match, not cookie counts or HTTP 200. Windows native extraction remains disabled pending qualification. |
+| `cookie-import-browser [browser] [--domain d] [--profile p] [--all] [--clear-storage] [--verify-auth]` | Copy cookies from chrome, chromium, brave, edge, Windows-only opera, opera-gx, or macOS-only comet, arc, dia. Omitted browser retains legacy comet; select the intended browser explicitly. --domain requires a matching current page; no scope flag opens the picker. --profile is the source directory; ambiguous profiles require selection. --all explicitly selects every non-expired cookie and cannot accompany --domain or --clear-storage. Storage is preserved unless --clear-storage resets captured-origin localStorage (shared across context tabs) and target-tab sessionStorage. --verify-auth requires daemon GSTACK_COOKIE_AUTH_SELECTOR and GSTACK_COOKIE_AUTH_EXPECTED_IDENTITY before startup; missing config rejects before mutation. Verified means an exact visible identity match, not cookie counts or HTTP 200. Windows native extraction remains disabled pending qualification. |
 | `dialog-accept [text]` | Auto-accept next alert/confirm/prompt. Optional text is sent as the prompt response |
 | `dialog-dismiss` | Auto-dismiss next dialog |
 | `fill <sel> <val>` | Fill input |