Free the Copy URL shortcut from ghost extension registrations (#6821)

* Rebind ghost Copy URL shortcut registrations to the pinned id

Chromium never hands a suggested shortcut to one extension while
another — even a long-gone one — still holds the registration. Profiles
that first loaded Copy URL before its id was pinned registered
Alt+Shift+L under an id derived from the extension's load path at the
time, so the pinned extension never receives the shortcut and the
keypress does nothing (#6816).

The quattro upgrade tried to repair this against one hardcoded
path-derived id, which only ever matched a single home directory. The
historical ids are unknowable in general — they hash long-gone absolute
paths through whatever symlinks existed then — but the registration
itself names the command, so a migration now rebinds any copy-url
command that points away from the pinned id, unless that id belongs to
an extension that is actually installed or the pinned extension already
holds a binding of its own.

Browsers rewrite Preferences on exit, which reverts any repair made
while one runs, so the migration asks for this user's browser windows to
be closed first — failing and staying pending when there is no terminal
to ask in or the prompt is declined. The backup a repair leaves behind
marks it as attempted but unverified: until a browser-free run confirms
the registration stayed repaired, the migration keeps itself pending
rather than trusting a disk state an open browser may still overwrite.

The upgrade-time repair is dropped: the upgrade already runs migrations,
so the migration is the single implementation.

Fixes #6816

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>

* Pin the WhatsApp Slim extension id

Keyless unpacked extensions get path-derived ids, which go stale if the
load path or packaging ever changes — the same class of bug that broke
the Copy URL shortcut for pre-package installs. Pin the id with a
manifest key like the other bundled extensions.

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>

---------

Co-authored-by: Claude Fable 5 <noreply@anthropic.com>

test/shell.d/chromium-copy-url-test.sh

@@ -104,36 +104,3 @@ native_reply=$(bash -c '
 [[ $native_reply == "0f0000007b22636f70696564223a747275657d" ]] ||
   fail "copy-url native host returns a framed success response" "$native_reply"
 pass "copy-url native host returns a framed success response"
-
-preferences="$TMPDIR/Preferences"
-backup="$TMPDIR/Preferences.bak"
-patch_script="$TMPDIR/repair-shortcuts.py"
-
-awk '
-  /<<'\''CHROMIUM_SHORTCUTS_PATCH_PY'\''/ { copying = 1; next }
-  copying && $0 == "CHROMIUM_SHORTCUTS_PATCH_PY" { exit }
-  copying { print }
-' "$ROOT/bin/omarchy-upgrade-to-quattro" >"$patch_script"
-
-cat >"$preferences" <<'JSON'
-{"extensions":{"commands":{"linux:Alt+Shift+L":{"command_name":"copy-url","extension":"bocglpkldciamkbmlphanhkfnhpmnbma","global":false},"linux:Alt+Shift+D":{"command_name":"download-video","extension":"dedjgknigfeelejglamclffonmophnfl","global":false}},"settings":{"bocglpkldciamkbmlphanhkfnhpmnbma":{"commands":{"copy-url":{"suggested_key":"Alt+Shift+L","was_assigned":true}}},"bgpiichlckmfanooecilcjemknkcpngb":{"commands":{"copy-url":{"suggested_key":"Alt+Shift+L"}}}}}}
-JSON
-
-python3 "$patch_script" "$preferences" "$backup"
-
-jq -e '
-  .extensions.commands["linux:Alt+Shift+L"].extension == "bgpiichlckmfanooecilcjemknkcpngb" and
-  .extensions.commands["linux:Alt+Shift+D"].extension == "dedjgknigfeelejglamclffonmophnfl" and
-  (.extensions.settings.bocglpkldciamkbmlphanhkfnhpmnbma.commands["copy-url"] | has("was_assigned") | not) and
-  .extensions.settings.bgpiichlckmfanooecilcjemknkcpngb.commands["copy-url"].was_assigned == true
-' "$preferences" >/dev/null || fail "quattro upgrade moves the Copy URL shortcut to the stable extension id"
-cmp -s "$backup" <(printf '%s\n' '{"extensions":{"commands":{"linux:Alt+Shift+L":{"command_name":"copy-url","extension":"bocglpkldciamkbmlphanhkfnhpmnbma","global":false},"linux:Alt+Shift+D":{"command_name":"download-video","extension":"dedjgknigfeelejglamclffonmophnfl","global":false}},"settings":{"bocglpkldciamkbmlphanhkfnhpmnbma":{"commands":{"copy-url":{"suggested_key":"Alt+Shift+L","was_assigned":true}}},"bgpiichlckmfanooecilcjemknkcpngb":{"commands":{"copy-url":{"suggested_key":"Alt+Shift+L"}}}}}}') ||
-  fail "quattro upgrade backs up Chromium preferences before shortcut repair"
-pass "quattro upgrade repairs and backs up the Copy URL shortcut"
-
-unchanged_hash=$(sha256sum "$preferences" | cut -d' ' -f1)
-rm "$backup"
-python3 "$patch_script" "$preferences" "$backup"
-[[ $(sha256sum "$preferences" | cut -d' ' -f1) == "$unchanged_hash" && ! -e $backup ]] ||
-  fail "Copy URL shortcut repair is idempotent"
-pass "Copy URL shortcut repair is idempotent"