feat(P02): orchestrator enrichment — GitAgentContext, multi-phase, error recovery, timer cleanup, TEST stage

---ci---
phase: 2
milestone: v0.6
status: execute
decisions:
  - id: D-001
    decision: Pass GitAgentContext to agents instead of bare AgentContext
    rationale: Agents need git-native context (gitContext, gitBranch, ciFiles, milestone) to operate autonomously
    confidence: 0.95
  - id: D-002
    decision: Implement multi-phase iteration with totalPhases derived from ROADMAP.md
    rationale: Milestones can span multiple phases; orchestrator must advance through all of them
    confidence: 0.90
  - id: D-003
    decision: Add executeStageWithRecovery with retry + plan revision + escalation
    rationale: Robust error recovery requires multiple fallback levels before giving up
    confidence: 0.85
  - id: D-004
    decision: Add timer-to-escalation mapping in EscalationProtocol for proper cleanup
    rationale: resolveEscalation must clearTimeout for the corresponding timer to prevent resource leaks
    confidence: 0.90
  - id: D-005
    decision: Add dispose() to EscalationProtocol called in orchestrator finally block
    rationale: Ensures all timers are cleaned up on orchestrator exit regardless of outcome
    confidence: 0.95
  - id: D-006
    decision: Add mechanical TEST stage fallback running npm test via execSync
    rationale: When no backend is available, tests can still be run mechanically
    confidence: 0.85
---/ci---

src/core/escalation.ts

@@ -29,6 +29,7 @@ export class EscalationProtocol {
   private pendingEscalations: Map<string, Escalation>;
   private timeoutCallback: (escalation: Escalation, chosenOption: string) => void;
   private timers: NodeJS.Timeout[];
+  private timerEscalationMap: Map<NodeJS.Timeout, string>;
 
   constructor(
     config: CIAgentConfig,
@@ -43,6 +44,7 @@ export class EscalationProtocol {
     this.pendingEscalations = new Map();
     this.timeoutCallback = timeoutCallback;
     this.timers = [];
+    this.timerEscalationMap = new Map();
   }
 
   setMilestone(milestone: string): void {
@@ -102,6 +104,16 @@ export class EscalationProtocol {
     const escalation = this.pendingEscalations.get(escalationId);
     if (!escalation) return null;
 
+    for (let i = this.timers.length - 1; i >= 0; i--) {
+      const timer = this.timers[i];
+      const mappedId = this.timerEscalationMap.get(timer);
+      if (mappedId === escalationId) {
+        clearTimeout(timer);
+        this.timerEscalationMap.delete(timer);
+        this.timers.splice(i, 1);
+      }
+    }
+
     escalation.resolution = resolution;
     escalation.resolved_at = new Date().toISOString();
     escalation.resolution_detail = `Chose option: ${chosenOptionId}`;
@@ -139,11 +151,16 @@ export class EscalationProtocol {
   clearAllTimers(): void {
     for (const timer of this.timers) {
       clearTimeout(timer);
+      this.timerEscalationMap.delete(timer);
     }
     this.timers = [];
     this.pendingEscalations.clear();
   }
 
+  dispose(): void {
+    this.clearAllTimers();
+  }
+
   formatEscalation(escalation: Escalation): string {
     const lines: string[] = [
       `⚠️ ESCALATION [${escalation.id}]`,
@@ -200,9 +217,13 @@ export class EscalationProtocol {
         escalation.resolved_at = new Date().toISOString();
         escalation.resolution_detail = `Auto-proceeded with default: ${escalation.default_option_id}`;
         this.pendingEscalations.delete(escalation.id);
+        this.timerEscalationMap.delete(timer);
+        const idx = this.timers.indexOf(timer);
+        if (idx >= 0) this.timers.splice(idx, 1);
         this.timeoutCallback(escalation, escalation.default_option_id);
       }
     }, timeout);
     this.timers.push(timer);
+    this.timerEscalationMap.set(timer, escalation.id);
   }
 }