PINK DITAv2 Sprint 2-3: accounting parity + multi-leg groundwork

Sprint 2 (accounting + observability parity, PINK scope):
- Verified pink_clickhouse.py writes the 8 BLUE-legacy row families at
  matching schema and that capital authority in pink_direct.step() is
  solely kernel.account (no balance-poll overwrite in the hot loop).
- Report: prod/clean_arch/dita_v2/SPRINT2_ACCOUNTING_PARITY.md.

Sprint 3 offline groundwork (no exchange contact):
- Add _write_trade_exit_leg to pink_clickhouse.py: one BLUE-schema-faithful
  trade_exit_legs row per exit leg, with isolated (non-cumulative) per-leg
  deltas tracked via _leg_state (reset on ENTER). Closes the docstring gap.
- New offline suite test_pink_multi_exit_groundwork.py (3 passed):
  * Flaw 4 — two-leg exit closes once, realized accrues per leg, closed
    slot rejects further EXIT (no double-close).
  * Overshoot invariant — a final EXIT requesting more than the remaining
    size CLAMPS (size to 0, no oversell), retiring the Sprint 0 cumulative-
    ratio risk empirically.
  * trade_exit_legs delta + full BLUE column-set assertions.
- Persistence regression after edits: 10 passed.

BLUE untouched: no changes to dolphin.* / DOLPHIN_*_BLUE / nautilus_event_trader.py.
Live VST multi-leg run remains deferred pending explicit authorization.

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>

prod/docs/DITA_V2_OPERATOR_PLAYBOOK.md

@@ -0,0 +1,116 @@
+# DITAv2 Operator Playbook
+
+This is the operator-facing control surface for the DITAv2 execution kernel.
+
+## Supervisor program
+
+The process is managed as:
+
+`dolphin:dita_v2`
+
+Launcher:
+
+`/mnt/dolphinng5_predict/prod/launch_dita_v2.py`
+
+## Default runtime posture
+
+- `DITA_V2_LAUNCHER_MODE=serve`
+- `DITA_V2_VENUE=BINGX`
+- `DITA_V2_ZINC=REAL`
+- `DITA_V2_CONTROL_PLANE=REAL_ZINC`
+- `DITA_V2_HAZELCAST=REAL`
+- `DITA_V2_MODE=DEBUG`
+- `DITA_V2_VERBOSITY=TRACE`
+
+The launcher defaults remain safe in-process for tests, but the supervised
+program is configured for the real shared-memory / live venue path.
+
+## Control commands
+
+Use:
+
+```bash
+python /mnt/dolphinng5_predict/prod/ops/dita_v2_ctl.py status
+python /mnt/dolphinng5_predict/prod/ops/dita_v2_ctl.py start
+python /mnt/dolphinng5_predict/prod/ops/dita_v2_ctl.py stop
+python /mnt/dolphinng5_predict/prod/ops/dita_v2_ctl.py restart
+python /mnt/dolphinng5_predict/prod/ops/dita_v2_ctl.py healthcheck
+```
+
+These map to:
+
+```bash
+supervisorctl -c /mnt/dolphinng5_predict/prod/supervisor/dolphin-supervisord.conf <action> dolphin:dita_v2
+```
+
+## Live BingX testnet smoke
+
+Use the repeatable live smoke wrapper:
+
+```bash
+python /mnt/dolphinng5_predict/prod/ops/dita_v2_live_bingx_smoke.py
+```
+
+Recommended explicit symbol:
+
+```bash
+python /mnt/dolphinng5_predict/prod/ops/dita_v2_live_bingx_smoke.py --symbol TRXUSDT
+```
+
+What it does:
+
+- loads `/mnt/dolphinng5_predict/.env`
+- sets `BINGX_SMOKE_LIVE=1`
+- sets `BINGX_SMOKE_ALLOW_TRADE=1`
+- sets `DITA_V2_LIVE_BINGX=1`
+- starts `dolphin:dita_v2` if it is not already running
+- runs `prod/tests/test_dita_v2_live_bingx_testnet_e2e.py`
+- preserves the live suite's rate-limit-aware behavior and cleanup paths
+
+Use `--dry-run` to print the exact command and env without trading.
+
+## Validation order
+
+1. Start the process with `start`.
+2. Check `status`.
+3. Run `healthcheck`.
+4. Inspect the logs:
+   - `/tmp/dolphin_logs/supervisor/dita_v2.log`
+   - `/tmp/dolphin_logs/supervisor/dita_v2-error.log`
+
+## Stop sequence
+
+1. `python /mnt/dolphinng5_predict/prod/ops/dita_v2_ctl.py stop`
+2. Confirm `status` shows the program stopped.
+3. Only after that, touch the launcher config or shared-memory state.
+
+## PINK-on-DITAv2 commands
+
+PINK now executes through the DITAv2 kernel.  The same supervisor commands
+apply, and the following PINK-specific surfaces are available:
+
+### PINK control
+
+```bash
+python /mnt/dolphinng5_predict/prod/ops/pink_ctl.py status
+python /mnt/dolphinng5_predict/prod/ops/pink_ctl.py healthcheck
+python /mnt/dolphinng5_predict/prod/ops/pink_ctl.py ditav2-status
+python /mnt/dolphinng5_predict/prod/ops/pink_ctl.py mode-verify
+```
+
+`ditav2-status` checks the DITAv2 env vars (`DITA_V2_MODE`, `DITA_V2_VENUE`,
+etc.) and the `dolphin_pink` supervisor program status.
+
+### PINK live BingX testnet smoke
+
+```bash
+python /mnt/dolphinng5_predict/prod/ops/dita_v2_live_bingx_smoke.py --pink --symbol TRXUSDT
+```
+
+Use `--dry-run` to print the exact env and pytest command without trading.
+
+### Stop sequence
+
+1. `python /mnt/dolphinng5_predict/prod/ops/pink_ctl.py stop`
+2. Confirm `status` shows the process stopped.
+3. Inspect logs: `/tmp/dolphin_logs/supervisor/dolphin_live_pink.log`