- delete the stock Flutter counter widget_test (always failed) and the
lightning invoice tests (network-dependent, and the feature is off)
- fix rotted assertions: removed-chain wallet types (solana, tron, zano,
decred) and mainnet-only BTC/LTC pattern expectations
- new test.yml workflow: pub get + analyze + test on push/PR to dev/main
- analysis_options: drop excludes for deleted paths, stop excluding the
five live coin facades, enable empty_catches and 7 other correctness
lints (still 0 analyzer errors)
- integration_test_runner: clean hash_wallet data dirs, not cake_wallet
