Refactor CLI command usage from ccw cli exec to ccw cli -p for improved prompt handling

- Updated command patterns across documentation and templates to reflect the new CLI syntax.
- Enhanced CLI tool implementation to support reading prompts from files and multi-line inputs.
- Modified core components and views to ensure compatibility with the new command structure.
- Adjusted help messages and internationalization strings to align with the updated command format.
- Improved error handling and user notifications in the CLI execution flow.

.claude/commands/memory/workflow-skill-memory.md

@@ -187,7 +187,7 @@ Objectives:
 
 3. Use Gemini for aggregation (optional):
    Command pattern:
-   ccw cli exec "
+   ccw cli -p "
    PURPOSE: Extract lessons and conflicts from workflow session
    TASK:
    • Analyze IMPL_PLAN and lessons from manifest
@@ -334,7 +334,7 @@ Objectives:
    - Sort sessions by date
 
 2. Use Gemini for final aggregation:
-   ccw cli exec "
+   ccw cli -p "
    PURPOSE: Aggregate lessons and conflicts from all workflow sessions
    TASK:
    • Group successes by functional domain