A suggestion for a light-client wallet (like the BTC SPV wallet with Merkle tree)

/var/lib/algorand# ls -l
total 3082292
-rw-r–r-- 1 algorand algorand 935810534 Jan 1 11:17 agreement.cdv
-rw-r–r-- 1 algorand algorand 1073742650 Jan 1 10:00 agreement.cdv.archive
-rw------- 1 algorand algorand 0 Dec 17 09:06 algod.lock
-rw-r–r-- 1 algorand algorand 15 Dec 31 20:20 algod.net
-rw-r–r-- 1 algorand algorand 4 Dec 31 20:20 algod.pid
-rw-r–r-- 1 algorand algorand 64 Dec 17 09:06 algod.token
drwxr-xr-x 4 root root 4096 Dec 19 22:18 betanetdata
-rw-r–r-- 1 algorand algorand 1634 Dec 13 04:47 config.json.example
drwxrwxr-x 6 algorand algorand 4096 Dec 17 09:06 genesis
-rw-r–r-- 1 algorand algorand 24972 Dec 13 04:47 genesis.json
drwx------ 2 algorand algorand 4096 Dec 17 09:06 mainnet-v1.0
-rw-r–r-- 1 algorand algorand 1073741718 Jan 1 10:08 node.archive.log
-rw-r–r-- 1 algorand algorand 72881820 Jan 1 11:17 node.log
-rw-r–r-- 1 algorand algorand 23 Dec 13 04:47 system.json
drwxr-xr-x 4 root root 4096 Dec 19 22:18 testnetdata

~:/var/lib/algorand# ls mainnet-v1.0 -l
total 30516
-rw-r–r-- 1 algorand algorand 4096 Dec 17 09:06 crash.sqlite
-rw-r–r-- 1 algorand algorand 32768 Dec 31 20:20 crash.sqlite-shm
-rw-r–r-- 1 algorand algorand 8272 Dec 17 09:06 crash.sqlite-wal
-rw-r–r-- 1 algorand algorand 18640896 Jan 1 11:15 ledger.block.sqlite
-rw-r–r-- 1 algorand algorand 32768 Jan 1 11:19 ledger.block.sqlite-shm
-rw-r–r-- 1 algorand algorand 4350752 Jan 1 11:19 ledger.block.sqlite-wal
-rw-r–r-- 1 algorand algorand 3350528 Jan 1 10:59 ledger.tracker.sqlite
-rw-r–r-- 1 algorand algorand 32768 Jan 1 11:19 ledger.tracker.sqlite-shm
-rw-r–r-- 1 algorand algorand 4770992 Jan 1 11:19 ledger.tracker.sqlite-wal