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.

codex-lens/_debug_output.txt

@@ -16,4 +16,4 @@ Got it. I'm ready for your first command.
 
   ✓ Completed in 16.1s
   ID: 1765691168543-gemini
-  Continue: ccw cli exec "..." --resume 1765691168543-gemini
+  Continue: ccw cli -p "..." --resume 1765691168543-gemini

codex-lens/_test_output.txt

@@ -17,6 +17,6 @@ Setup complete. I am ready for your first command.
 
   ✓ Completed in 19.6s
   ID: 1765690404300-gemini
-  Continue: ccw cli exec "..." --resume 1765690404300-gemini
+  Continue: ccw cli -p "..." --resume 1765690404300-gemini
 
 === STDERR ===

codex-lens/_test_result.txt

@@ -16,4 +16,4 @@ Setup complete. I am ready for your first command.
 
   ✓ Completed in 16.0s
   ID: 1765690668720-gemini
-  Continue: ccw cli exec "..." --resume 1765690668720-gemini
+  Continue: ccw cli -p "..." --resume 1765690668720-gemini