v2.2.0: add blackjack with reserved bets and hit/stand/double

1 files changed, 13 insertions, 0 deletions

diff --git a/docs/TESTING.md b/docs/TESTING.md
index d944b42..ed2f746 100644
--- a/docs/TESTING.md
+++ b/docs/TESTING.md
@@ -13,6 +13,7 @@ shared global database. Each test owns its state.
 | --- | --- |
 | `tests/client_core.rs` | Client command/game flows via a headless screen applying logical effects. |
 | `tests/client_ui.rs` | Help, history, completion, bet parsing, display width, cursor math. |
+| `tests/blackjack.rs` | Card totals, naturals, hit/stand/double, dealer bust, S17, state parsing. |
 | `tests/protocol.rs` | Newline buffering and timeout/error classification. |
 | `tests/roulette.rs` | European wheel, split-bet payouts, zero handling, result parser. |
 | `tests/server_core.rs` | Handler, bcrypt migration, SQL injection, transaction rollback, `plays` audit, sessions. |
@@ -79,6 +80,18 @@ Use an 80-column terminal because several output lines are width-sensitive.
 6. The result board shows the winning number/color/parity, the payout, and the
    new balance. The next spin reuses the placed bets.
 
+## Manual blackjack checklist
+
+1. `play blackjack` shows the ready board; Space deals.
+2. The dealer's hole card is hidden while it is the player's turn. H/S/D work;
+   D is only offered on the first two cards and reserves the extra bet.
+3. Stand and check the dealer stands on all 17s. Check a dealer bust pays the
+   player, and a natural blackjack pays 3:2.
+4. Q during a hand sends cancel and refunds the reserved bet; Q after a hand
+   just leaves. Disconnecting mid-hand also refunds it.
+5. Check the audit row: `game_type = blackjack`, the total bet (including a
+   double), winnings, and the final cards/result in `details`.
+
 ## Manual server checks
 
 - Register, log out, log in again (bcrypt path).