Fix Ink compilation errors (part 2)

Continued fixing conditional syntax and EXTERNAL/VAR issues:

- Converted all EXTERNAL declarations to proper VARs
- Fixed multi-branch conditionals to use separate blocks
- Replaced remaining -> END statements with #exit_conversation
- Fixed inline conditional syntax in terminal SCADA display

Files updated:
- m04_npc_robert_chen.ink
- m04_phone_agent0x99.ink
- m04_phone_robert_chen.ink
- m04_terminal_attack_trigger.ink
- m04_terminal_scada_display.ink
- m04_closing_debrief.ink

Remaining: 7 conditional syntax errors to fix

scenarios/m04_critical_failure/ink/m04_closing_debrief.ink

@@ -9,12 +9,14 @@ VAR disclosure_choice = ""           // full, quiet, partial
 VAR task_force_null_assigned = false // Player assigned to TF Null
 VAR mission_debriefed = false        // Debrief completed
 
+// Game state variables
+VAR voltage_captured = false
+VAR chen_trust_level = 0
+VAR attack_vectors_disabled = 0
+VAR operatives_defeated = 0
+
 // External variables (set by game)
 EXTERNAL player_name()
-EXTERNAL voltage_captured()
-EXTERNAL chen_trust_level()
-EXTERNAL attack_vectors_disabled()
-EXTERNAL operatives_defeated()
 
 // ===========================================
 // DEBRIEF START
@@ -296,9 +298,11 @@ Decision recorded.
 
 {disclosure_choice == "full":
     Public statement will be coordinated with local authorities.
-- disclosure_choice == "quiet":
+}
+{disclosure_choice == "quiet":
     Incident remains classified. Cover story prepared.
-- disclosure_choice == "partial":
+}
+{disclosure_choice == "partial":
     Controlled statement will be prepared for media.
 }
 
@@ -372,4 +376,5 @@ This is just the beginning.
 // TRIGGERS: Task 3.3 complete (report_to_0x99)
 // TRIGGERS: Mission complete event
 
--> END
+#exit_conversation
+-> start

scenarios/m04_critical_failure/ink/m04_npc_robert_chen.ink

@@ -12,11 +12,13 @@ VAR chen_provided_keycard = false
 VAR discussed_optigrid = false
 VAR scada_threat_confirmed = false
 
+// Game state variables
+VAR operatives_defeated = 0
+VAR urgency_stage = 0
+
 // External variables (set by game)
 EXTERNAL player_name()
 EXTERNAL current_time()
-EXTERNAL operatives_defeated()
-EXTERNAL urgency_stage()
 
 // ===========================================
 // CONVERSATION 1: INITIAL MEETING (Task 1.2)
@@ -225,7 +227,8 @@ Let me know if you need anything else. I'll be in the Control Room monitoring sy
 
 // TRIGGERS: Task 1.2 completion
 
--> END
+#exit_conversation
+-> initial_meeting
 
 === initial_meeting_end_grateful ===
 #speaker:robert_chen
@@ -236,7 +239,8 @@ Of course. And look... if you do find anything, let me know.
 
 This facility is my responsibility. These people depend on us.
 
--> END
+#exit_conversation
+-> initial_meeting
 
 // ===========================================
 // EARLY REVEAL OPTION
@@ -363,7 +367,8 @@ Meet me in the Control Room. We'll find what they did to my systems.
 
 // TRIGGERS: Task 1.2 completion, chen_is_ally activated early
 
--> END
+#exit_conversation
+-> initial_meeting
 
 === chen_maintains_cover ===
 #speaker:robert_chen
@@ -620,7 +625,8 @@ Call me if you need technical support—I know every system in this facility.
 
 // TRIGGERS: Task 1.4 completion, Objective 1 complete, Objective 2 unlocked
 
--> END
+#exit_conversation
+-> initial_meeting
 
 === scada_conversation_end_grateful ===
 #speaker:robert_chen
@@ -631,4 +637,5 @@ Be careful out there.
 
 And... thank you. For taking this seriously. For protecting my people.
 
--> END
+#exit_conversation
+-> initial_meeting

scenarios/m04_critical_failure/ink/m04_phone_agent0x99.ink

@@ -11,12 +11,14 @@ VAR server_room_reached = false
 VAR attack_mechanism_known = false
 VAR voltage_priority_discussed = false
 
+// Game state variables
+VAR chen_is_ally = false
+VAR operatives_defeated = 0
+VAR urgency_stage = 0
+VAR flags_submitted = 0
+
 // External variables (set by game)
 EXTERNAL player_name()
-EXTERNAL chen_is_ally()
-EXTERNAL operatives_defeated()
-EXTERNAL urgency_stage()
-EXTERNAL flags_submitted()
 
 // ===========================================
 // FIRST CALL (Initial Contact)
@@ -140,7 +142,8 @@ Stay sharp. These aren't amateurs. If you encounter hostiles, defend yourself.
 
 Call if you need guidance.
 
--> END
+#exit_conversation
+-> start
 
 // ===========================================
 // EVENT: SERVER ROOM ENTERED
@@ -202,7 +205,8 @@ Find it, analyze it, and we'll know how to disable their attack.
 
 Call when you've got intel.
 
--> END
+#exit_conversation
+-> start
 
 // ===========================================
 // EVENT: ATTACK MECHANISM IDENTIFIED
@@ -323,9 +327,11 @@ Three—disable physical bypass devices and SCADA malware.
 
 {operatives_defeated >= 2:
     You've already taken down {operatives_defeated} operatives. You're doing this.
-- operatives_defeated == 1:
+}
+{operatives_defeated == 1:
     You've neutralized one operative. Expect resistance from the others.
-- else:
+}
+{operatives_defeated == 0:
     All three operatives are still active. Be ready for combat.
 }
 
@@ -347,7 +353,8 @@ Three—disable physical bypass devices and SCADA malware.
 
 240,000 people are counting on you. Bring it home.
 
--> END
+#exit_conversation
+-> start
 
 // ===========================================
 // OPTIONAL: PLAYER-INITIATED CALL (GUIDANCE REQUEST)
@@ -506,4 +513,5 @@ Anything else?
 
 Stay safe out there. Call if you need me.
 
--> END
+#exit_conversation
+-> start

scenarios/m04_critical_failure/ink/m04_phone_robert_chen.ink

@@ -8,12 +8,14 @@
 VAR chen_support_calls = 0
 VAR guidance_provided = ""
 
+// Game state variables
+VAR chen_is_ally = false
+VAR chen_trust_level = 0
+VAR urgency_stage = 0
+VAR attack_mechanism_known = false
+
 // External variables (set by game)
 EXTERNAL player_name()
-EXTERNAL chen_is_ally()
-EXTERNAL chen_trust_level()
-EXTERNAL urgency_stage()
-EXTERNAL attack_mechanism_known()
 
 // ===========================================
 // PHONE SUPPORT AVAILABILITY CHECK
@@ -28,7 +30,8 @@ EXTERNAL attack_mechanism_known()
 
     I'm monitoring systems from the Control Room. Come see me if you need something.
 
-    -> END
+    #exit_conversation
+-> start
 - else:
     // Chen is ally - provides technical support
 
@@ -141,11 +144,13 @@ Three: Remote trigger mechanism. Secure and disable Voltage's command laptop.
     Priority one: identify how they're compromising the SCADA network.
 
     Use the VM terminal in the server room. Find their attack infrastructure.
-- urgency_stage >= 3:
+}
+{attack_mechanism_known and urgency_stage >= 3:
     We're in the final stages. You need to disable their attack vectors NOW.
 
     Physical bypasses, SCADA malware, and the remote trigger. All three.
-- else:
+}
+{attack_mechanism_known and urgency_stage < 3:
     You know what they did. Now disable it.
 
     Three vectors: physical, digital, and the trigger mechanism.
@@ -195,7 +200,8 @@ Call if you need more guidance.
     I'm monitoring systems from here.
 }
 
--> END
+#exit_conversation
+-> start
 
 // ===========================================
 // EMERGENCY CALL (If Attack Partially Triggered)
@@ -212,4 +218,5 @@ You need to disable those vectors RIGHT NOW—physical bypasses, SCADA script, e
 
 // TRIGGERS: Emergency intervention mode
 
--> END
+#exit_conversation
+-> start

scenarios/m04_critical_failure/ink/m04_terminal_attack_trigger.ink

@@ -11,9 +11,9 @@ VAR trigger_mechanism_disabled = false // Remote trigger neutralized
 VAR attack_vectors_disabled = 0       // Total count (0-3)
 VAR emergency_intervention = false    // Voltage triggered attack
 
-// External variables (set by game)
-EXTERNAL voltage_captured()
-EXTERNAL attack_trigger_secured()
+// Game state variables
+VAR voltage_captured = false
+VAR attack_trigger_secured = false
 
 // ===========================================
 // TERMINAL ACCESS
@@ -34,10 +34,12 @@ EXTERNAL attack_trigger_secured()
 {voltage_captured:
     [OPERATOR: Voltage - SESSION TERMINATED]
     [SAFETYNET Override Active]
-- attack_trigger_secured:
+}
+{not voltage_captured and attack_trigger_secured:
     [OPERATOR: Unknown - SESSION SECURED]
     [Manual Control Available]
-- else:
+}
+{not voltage_captured and not attack_trigger_secured:
     [OPERATOR: Voltage - ACTIVE]
     [WARNING: Session In Progress]
 }
@@ -366,4 +368,5 @@ Terminal session ended.
 
 Laptop secured for intelligence analysis.
 
--> END
+#exit_conversation
+-> start

scenarios/m04_critical_failure/ink/m04_terminal_scada_display.ink

@@ -8,10 +8,10 @@
 VAR scada_anomalies_identified = false
 VAR parameter_readings_reviewed = false
 
-// External variables (set by game)
-EXTERNAL urgency_stage()
-EXTERNAL attack_vectors_disabled()
-EXTERNAL chen_is_ally()
+// Game state variables
+VAR urgency_stage = 0
+VAR attack_vectors_disabled = 0
+VAR chen_is_ally = false
 
 // ===========================================
 // SCADA TERMINAL ACCESS
@@ -30,7 +30,18 @@ EXTERNAL chen_is_ally()
 ╚════════════════════════════════════════════════╝
 
 [SYSTEM STATUS: {attack_vectors_disabled >= 3: SECURE | MONITORING}]
-[URGENCY LEVEL: {urgency_stage >= 4: CRITICAL | urgency_stage >= 3: HIGH | urgency_stage >= 2: ELEVATED | NORMAL}]
+{urgency_stage >= 4:
+    [URGENCY LEVEL: CRITICAL]
+}
+{urgency_stage == 3:
+    [URGENCY LEVEL: HIGH]
+}
+{urgency_stage == 2:
+    [URGENCY LEVEL: ELEVATED]
+}
+{urgency_stage < 2:
+    [URGENCY LEVEL: NORMAL]
+}
 
 * [View Chemical Dosing Parameters]
     -> view_dosing_parameters
@@ -65,8 +76,8 @@ CHEMICAL DOSING PARAMETERS
 
     All parameters within safe operational ranges.
     Automated control restored.
-
-- urgency_stage >= 4:
+}
+{attack_vectors_disabled < 3 and urgency_stage >= 4:
     [CRITICAL WARNING]
 
     Chlorine: 3.2 ppm → 4.1 ppm (DANGEROUS TREND)
@@ -75,8 +86,8 @@ CHEMICAL DOSING PARAMETERS
 
     ⚠ PARAMETERS APPROACHING TOXIC LEVELS
     ⚠ IMMEDIATE INTERVENTION REQUIRED
-
-- urgency_stage >= 3:
+}
+{attack_vectors_disabled < 3 and urgency_stage == 3:
     [HIGH ALERT]
 
     Chlorine: 1.8 ppm → 2.3 ppm (ELEVATED)
@@ -85,8 +96,8 @@ CHEMICAL DOSING PARAMETERS
 
     ⚠ ABNORMAL PARAMETER DRIFT DETECTED
     ⚠ TRENDING TOWARD UNSAFE LEVELS
-
-- urgency_stage >= 2:
+}
+{attack_vectors_disabled < 3 and urgency_stage == 2:
     [ELEVATED MONITORING]
 
     Chlorine: 1.1 ppm → 1.4 ppm (RISING)
@@ -95,8 +106,8 @@ CHEMICAL DOSING PARAMETERS
 
     ⚠ CHLORINE DOSING ANOMALY DETECTED
     ⚠ PARAMETERS DRIFTING FROM BASELINE
-
-- else:
+}
+{attack_vectors_disabled < 3 and urgency_stage < 2:
     [MONITORING]
 
     Chlorine: 0.8 ppm → 0.9 ppm (SLIGHT INCREASE)
@@ -265,4 +276,5 @@ Terminal session ended.
     ⚠ WARNING: Time-sensitive threat
 }
 
--> END
+#exit_conversation
+-> start