feat(android): back up WhatsApp's own chat backups, and its media if asked

A WhatsApp section takes WhatsApp's folder through the picker, sends its
encrypted Databases and Backups (not the dated copies of earlier weeks) into
<folder>/<account>-whatsapp, and names the restore set in the manifest.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

1 files changed, 9 insertions, 4 deletions

diff --git a/packages/meshbay-hub/tests/test_android_shell.py b/packages/meshbay-hub/tests/test_android_shell.py
index 9275d67..001f6d9 100644
--- a/packages/meshbay-hub/tests/test_android_shell.py
+++ b/packages/meshbay-hub/tests/test_android_shell.py
@@ -136,20 +136,24 @@ def test_the_shim_offers_desktop_channels_and_native_answers_each():
     native = set()
     for path in (SRC / "bridge" / "Channels.kt", SRC / "bridge" / "KeyChannels.kt",
                  SRC / "cast" / "CastChannels.kt", SRC / "notify" / "PushChannels.kt",
-                 SRC / "photos" / "PhotoChannels.kt", SRC / "phonesync" / "Destination.kt",
-                 SRC / "drive" / "DriveChannels.kt"):
+                 SRC / "photos" / "PhotoChannels.kt", SRC / "phonesync" / "Destination.kt"):
         native |= set(re.findall(r'^\s*"([\w:-]+)" ->', _read(path), flags=re.M))
     # Contacts and messages share one class, its channels named by a prefix.
     docs = set(re.findall(r'^\s*"(\w+)" ->', _read(SRC / "phonesync" / "DocChannels.kt"), flags=re.M))
     for prefix in re.findall(r'DocChannels\("(\w+)"', _read(SRC / "MainActivity.kt")):
         native |= {f"{prefix}:{name}" for name in docs}
+    # The chosen-folder backups too, their prefixes in DriveKind.kt.
+    drive = set(re.findall(r'^\s*"([\w-]+)" ->', _read(SRC / "drive" / "DriveChannels.kt"), flags=re.M))
+    for prefix in re.findall(r'prefix = "(\w+)"', _read(SRC / "drive" / "DriveKind.kt")):
+        native |= {f"{prefix}:{name}" for name in drive}
     shim = _shim_channels()
     assert shim, "no channel found in the shim"
     # A phone has a push distributor to talk to and a camera roll and an
     # address book to back up, and a desktop has none of them; those families are the ones the desktop lacks
     # rather than the ones it shares.
     phone_only = {c for c in shim if c.startswith(("push:", "photosync:", "phonesync:", "contactsync:",
-                                                 "calendarsync:", "messagesync:", "drivesync:"))}
+                                                 "calendarsync:", "messagesync:", "drivesync:",
+                                                 "wasync:"))}
     assert any(c.startswith("push:") for c in phone_only), "the push channels are gone"
     assert any(c.startswith("photosync:") for c in phone_only), "the backup channels are gone"
     assert shim - phone_only <= preload, f"channels the desktop does not have: {shim - preload}"
@@ -268,7 +272,8 @@ def test_only_the_personal_profile_is_backed_up():
     assert "Profiles.isPersonal(this)" in activity and "const BACKUP = $backups;" in activity
     shim = _strip_js_comments(_read(SHIM))
     gated = shim.split("...(BACKUP ? {", 1)[1].split("} : {}),", 1)[0]
-    for name in ("photoSync:", "phoneSync:", "contactSync:", "calendarSync:", "driveSync:"):
+    for name in ("photoSync:", "phoneSync:", "contactSync:", "calendarSync:", "driveSync:",
+                 "whatsappSync:"):
         assert name in gated, name
     for path in [*(SRC / "phonesync").rglob("*.kt"), *(SRC / "photos").rglob("*.kt"),
                  *(SRC / "drive").rglob("*.kt"),