[FEATURE] #880 - Add batch run summary with telemetry to CliConsoleManager and listeners

[stephanj]

Parent Issue

Part of #880 — Introduce Batch-Level Learning and Strategy Memory

Context

CliConsoleManager currently prints per-task headers and process output but no run-level summary. SpecTaskRunnerListener.onRunFinished() receives only completed, skipped, total, and finalState counts. There is no telemetry breakdown at the end of a batch run.

Task

Add a comprehensive batch run summary to the console and listener interface.

Key Changes

1. Create BatchRunSummary model:

   @Data
   public class BatchRunSummary {
       String batchId;                      // UUID for this run
       Instant startedAt;
       Instant finishedAt;
       long totalExecutionTimeMs;
       int totalTasks;
       int completedTasks;
       int skippedTasks;
       int failedTasks;
       long totalInputTokens;
       long totalOutputTokens;
       double totalCost;
       RunnerState finalState;
       List<TaskExecutionMetrics> taskMetrics;  // per-task breakdown
       Map<TaskResultStatus, Integer> statusBreakdown;
   }

2. Build summary in SpecTaskRunnerService.finish():

   • Aggregate all TaskExecutionMetrics collected during run
   • Calculate totals and breakdowns
   • Pass to listener via extended onRunFinished()

3. Print to CliConsoleManager:

   ═══════════════════════════════════════════════
   Batch Run Summary
   ═══════════════════════════════════════════════
   Total tasks:    8  (6 completed, 1 skipped, 1 failed)
   Total time:     4m 32s
   Total tokens:   145,230 in / 67,890 out
   Total cost:     $0.47
   
   Per-task breakdown:
     ✓ TASK-1  Set up schema         45s    $0.05
     ✓ TASK-2  Create User model     32s    $0.04
     ✗ TASK-3  Email validation      —      (timeout)
     ✓ TASK-4  REST endpoints        68s    $0.12
     ...
   ═══════════════════════════════════════════════
   

4. Extend SpecTaskRunnerListener:

   default void onRunFinished(BatchRunSummary summary) {
       onRunFinished(summary.getCompletedTasks(), summary.getSkippedTasks(),
                     summary.getTotalTasks(), summary.getFinalState());
   }

Files to Create / Modify

• src/main/java/com/devoxx/genie/model/spec/BatchRunSummary.java (new)
• src/main/java/com/devoxx/genie/service/spec/SpecTaskRunnerService.java
• src/main/java/com/devoxx/genie/service/spec/SpecTaskRunnerListener.java
• src/main/java/com/devoxx/genie/service/cli/CliConsoleManager.java

Dependencies

• Requires: TaskExecutionMetrics ([FEATURE] #880 - Create TaskExecutionMetrics model for per-task telemetry #910)

Acceptance Criteria

• BatchRunSummary aggregates all per-task metrics
• Console prints formatted summary at end of every batch run
• Per-task breakdown shows status, timing, and cost
• Listener receives full summary (backward compatible default method)
• Summary printed for both CLI and LLM mode runs