fix(planner): EV session viditelna i bez deadline / nad targetem (BUG2)

Zivy incident home-01: aktivni plan mel ev_sessions:0, ac session bezela
(target 70 %). Planovac neviděl ~6 kW zatez auta a spatne rozvrhl baterii
(zbytecny vecerni import).

Root cause (dve pasti):
- fn_planning_site_context vracela session jako null, kdyz needed_wh=0
  (auto nad targetem) i kdyz target_deadline is null.
- _ev_session_from_json (Python) zahazovala session bez deadline.

Fix:
- R__038 fn_ev_session_planning_json: session se vyradi (null) JEN bez tvrdych
  dat (kapacita vozidla / soc_at_connect). target_deadline smi byt NULL --
  solver hard deadline constraint aplikuje jen pri needed>0; oportunisticka
  vrstva bezi i bez deadline. Auto nad targetem zustava v planu jako znama
  zatez i s headroomem k levnemu doplneni. R__039 vola helper (deduplikace
  dvou inline poddotazu, SQL-first).
- _ev_session_from_json si NULL deadline ponecha (energy_needed_wh default 0).
- testy test_ev_session_parse.py; docs ev-charging + planning-changelog;
  CLAUDE.md funkce.

Navrh agresivnejsiho oportunistickeho algoritmu (P50 levnych oken z
market_price_stats misto konstanty 1 Kc/kWh) -- NEnasazeno, k rozhodnuti,
sepsano v docs/04-modules/planning.md (EV oportunismus); riziko regrese
golden ekonomiky, nutny EV fixture + eval.

Overeni: pytest -q 362 passed; golden replay gate 7 passed; solver_v2_eval
beze zmeny (fixtures bez EV session).

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>

CLAUDE.md

@@ -163,7 +163,7 @@ Projekt je **SQL-first**: doménová logika, agregace, joiny mezi tabulkami a st
 | `signal_state` | Poslední požadovaná / odeslaná / ověřená hodnota na cíli (idempotence). |
 | `cutoff_switch_log` | Log přepnutí cut-off přepínačů (mikroinvertory); edge trigger, důvod a cena. |
 
-**View / funkce (nejsou tabulky):** `vw_site_effective_price`, `vw_site_directory`, `vw_modbus_last_verified`, `vw_asset_inverter_modbus_poll`, `vw_asset_ev_charger_modbus_poll`, `vw_asset_heat_pump_modbus_poll`, `vw_latest_telemetry`, `vw_telemetry_hourly_7d`, `vw_telemetry_15m_7d` (15min agregát pro dashboard sloty; repeatable `R__071_vw_telemetry_15m_7d.sql`), `vw_audit_summary`, `vw_operating_mode`, `vw_forecast_accuracy_by_lead_time`, `vw_forecast_accuracy_daily`; `fn_effective_price`, `fn_green_bonus_revenue`, `fn_cop_estimate`, `fn_fill_audit_interval`, `fn_fill_forecast_accuracy`, `fn_delete_forecast_pv_prague_calendar_day`, `fn_pv_forecast_sync_reference_days`, `fn_set_mode`, `fn_expire_modes` (vrací řádky přepnutí pro Discord), `fn_restore_previous_mode`, `fn_update_ev_arrival_stats`, `fn_ev_expected_arrival`, `fn_update_baseline_stats`, `fn_rebuild_consumption_baseline_stats`, `fn_get_baseline_forecast`, `fn_update_market_price_stats`, `fn_update_tuv_usage_stats`, `fn_get_predicted_price`, dále read-modely: `fn_site_configuration`, `fn_site_full_status`, `fn_site_notifications_context`, `fn_plan_current_bundle`, `fn_planning_run_horizon`, `fn_planning_future_price_days`, `fn_economics_daily_month`, `fn_economics_monthly_chart`, `fn_economics_lock_day`, `fn_economics_unlock_day`, `fn_energy_flows_daily_month`, `fn_energy_flows_intervals_day`, `fn_forecast_pv_split`, `fn_ev_sessions_active`, `fn_ev_session_apply_patch`, `fn_ev_arrival_prediction_bundle`, `fn_ev_session_transition`, `fn_ev_session_defaults` (kaskáda ev_weekly_requirement → forecast → defaulty), `fn_negative_price_predictions`, `fn_latest_ote_day_stats`, `fn_ote_day_slot_stats_prague`, `fn_ote_list_missing_days`, `fn_site_effective_prices_day_prague`, `fn_modbus_journal_list`, `fn_modbus_written_command_ids`, `fn_modbus_commands_by_ids`, `fn_inverter_modbus_caps_patch`, `fn_set_mode_with_context`, `fn_fill_audit_for_site_window`, plánování: `fn_load_planning_slots_full`, `fn_last_effective_ote`, `fn_planning_horizon_end`, `fn_planning_site_context`, `fn_pv_forecast_correction_factor`, `fn_planning_run_commit`, `fn_planning_slot_boundary_prague`, `fn_planning_interval_at_offset`, `fn_telemetry_inverter_sample`, `fn_telemetry_ev_charger_sample`, `fn_telemetry_heat_pump_sample`, `fn_battery_cycle_audit`, Deye helpery: `fn_deye_pack_system_time`, `fn_deye_clock_drift_sec`, `fn_deye_time_point_regs`, `fn_deye_tou_inactive_signature`, `fn_modbus_last_verified_map`, `fn_modbus_device_state_map`, `fn_inverter_pv_a_max_w`, `fn_site_has_active_green_bonus_pv`.
+**View / funkce (nejsou tabulky):** `vw_site_effective_price`, `vw_site_directory`, `vw_modbus_last_verified`, `vw_asset_inverter_modbus_poll`, `vw_asset_ev_charger_modbus_poll`, `vw_asset_heat_pump_modbus_poll`, `vw_latest_telemetry`, `vw_telemetry_hourly_7d`, `vw_telemetry_15m_7d` (15min agregát pro dashboard sloty; repeatable `R__071_vw_telemetry_15m_7d.sql`), `vw_audit_summary`, `vw_operating_mode`, `vw_forecast_accuracy_by_lead_time`, `vw_forecast_accuracy_daily`; `fn_effective_price`, `fn_green_bonus_revenue`, `fn_cop_estimate`, `fn_fill_audit_interval`, `fn_fill_forecast_accuracy`, `fn_delete_forecast_pv_prague_calendar_day`, `fn_pv_forecast_sync_reference_days`, `fn_set_mode`, `fn_expire_modes` (vrací řádky přepnutí pro Discord), `fn_restore_previous_mode`, `fn_update_ev_arrival_stats`, `fn_ev_expected_arrival`, `fn_update_baseline_stats`, `fn_rebuild_consumption_baseline_stats`, `fn_get_baseline_forecast`, `fn_update_market_price_stats`, `fn_update_tuv_usage_stats`, `fn_get_predicted_price`, dále read-modely: `fn_site_configuration`, `fn_site_full_status`, `fn_site_notifications_context`, `fn_plan_current_bundle`, `fn_planning_run_horizon`, `fn_planning_future_price_days`, `fn_economics_daily_month`, `fn_economics_monthly_chart`, `fn_economics_lock_day`, `fn_economics_unlock_day`, `fn_energy_flows_daily_month`, `fn_energy_flows_intervals_day`, `fn_forecast_pv_split`, `fn_ev_sessions_active`, `fn_ev_session_apply_patch`, `fn_ev_arrival_prediction_bundle`, `fn_ev_session_transition`, `fn_ev_session_defaults` (kaskáda ev_weekly_requirement → forecast → defaulty), `fn_ev_session_planning_json` (EV session pro LP; nevyřazuje při needed=0), `fn_negative_price_predictions`, `fn_latest_ote_day_stats`, `fn_ote_day_slot_stats_prague`, `fn_ote_list_missing_days`, `fn_site_effective_prices_day_prague`, `fn_modbus_journal_list`, `fn_modbus_written_command_ids`, `fn_modbus_commands_by_ids`, `fn_inverter_modbus_caps_patch`, `fn_set_mode_with_context`, `fn_fill_audit_for_site_window`, plánování: `fn_load_planning_slots_full`, `fn_last_effective_ote`, `fn_planning_horizon_end`, `fn_planning_site_context`, `fn_pv_forecast_correction_factor`, `fn_planning_run_commit`, `fn_planning_slot_boundary_prague`, `fn_planning_interval_at_offset`, `fn_telemetry_inverter_sample`, `fn_telemetry_ev_charger_sample`, `fn_telemetry_heat_pump_sample`, `fn_battery_cycle_audit`, Deye helpery: `fn_deye_pack_system_time`, `fn_deye_clock_drift_sec`, `fn_deye_time_point_regs`, `fn_deye_tou_inactive_signature`, `fn_modbus_last_verified_map`, `fn_modbus_device_state_map`, `fn_inverter_pv_a_max_w`, `fn_site_has_active_green_bonus_pv`.
 
 ---