Implements the missing 'agents project switch <name>' command to switch
the active project context. The command validates that the project exists
and displays confirmation with support for multiple output formats
(rich, json, yaml, plain).

Includes:
- Switch command implementation in src/cleveragents/cli/commands/project.py
- BDD feature scenarios for switch command testing
- Step definitions for switch command invocation
- Support for --format flag for machine-readable output

Closes #8623

@@ -0,0 +20,4 @@
+
+console = _get_console()
+err_console = _get_err_console()
+

@@ -0,0 +23,4 @@
+
+# Reusable --format option description (mirrors project.py)
+_FORMAT_HELP = "Output format: json, yaml, plain, table, or rich (default: rich)"
+

@@ -0,0 +1,134 @@
+"""Project switch command for CleverAgents CLI.

@@ -698,0 +703,4 @@
+
+
+@when('I invoke project-switch for "{name}" default format')
+def step_invoke_switch(context: Any, name: str) -> None:

@@ -39,6 +40,11 @@ from cleveragents.core.exceptions import (
     ValidationError,
 )
 
+from cleveragents.cli.commands.project_switch import switch_project

@@ -0,0 +14,4 @@
+
+from pathlib import Path
+
+from typing import Any

@@ -0,0 +65,4 @@
+    if proj_path is not None:
+        _persist_active_project(Path(proj_path), name)
+    else:
+        # Fallback: write to cwd project marker