Navigation base, the way Firefox does about:preferences#privacy: the
address bar follows the Settings page (theseus://settings/privacy) and
the hash mirrors it, so every page has a link; a page can have
sub-pages (theseus://settings/privacy/exceptions) with a breadcrumb and
a back arrow; open-settings and theseus:// links accept the two-level
slug.
Privacy now reads top-down: a "Theseus is on guard" card (Shield and
its running total, cookie pop-ups answered, Tor state, version), then
Tracking protection with the Shield and Cookie Pop-ups cards moved here
from Performance and a Manage exceptions sub-page listing the sites
each add-on was told to leave alone (remove to protect again), then
Device access, Anti-fingerprinting, Network (Tor switch and the VPN
panel) and Browsing data. Performance is about resources again.
Shield and Cookie Pop-ups are settings more than tools, so their
switches, the cookie mode, the counters and "Update rules" now sit in
Settings › Performance under a Protections heading, driven through the
add-ons' own message handlers (Settings-only IPC). Each card opens the
add-on's panel for the per-site details, and each panel links back to
Settings. The two add-ons start hidden from the toolbar's extension
row (manifest dock:"hidden", honoured once so a user who shows them
keeps them); "Show hidden" on the row brings them back.
theseus://settings and theseus://settings/<section> are now addresses,
so any page or note can link to a Settings page.
Also: a Settings or add-on tab that the user navigates elsewhere stops
counting as that tab, otherwise "open Settings" kept focusing a tab
that no longer showed Settings.
Theseus had no content blocking at all. Shield blocks requests to known
tracking and advertising hosts on every site, using EasyList and
EasyPrivacy through Ghostery's adblocker engine (the matcher those lists
are written for). The lists ship inside the add-on so blocking works
from the first launch, offline; the compiled engine is cached under the
add-on's data dir (a 22 ms load instead of a 500 ms parse), and the
lists refresh from their publishers about once a day.
The panel shows what was stopped on the current page, a one-click
allow for the site, the global switch, the running total and the rule
versions with an "Update now". Network filters only for now: a blocked
request never leaves the browser, but leftover empty ad boxes are not
hidden yet.
Host side: a "request-filter" capability. Chromium allows one
onBeforeRequest listener per session, so main owns it and consults the
add-ons' filters; a top-level navigation is never blocked, only http(s)
subresources are offered. api.tabs (active tab and a change event) lets
the panel show per-site numbers without seeing page content.
