Add clone support across Action types and Command so commands can be safely
registered or runner-bound without mutating the original instances.
- clone BaseAction implementations across simple, composite, IO, prompt, file,
HTTP, process, and signal actions
- bind cloned commands in Falyx.add_command_from_command() and CommandRunner
- preserve local never_prompt settings when cloning actions
- rename shared runtime state from options to options_manager for consistency
- seed root and execution option namespaces consistently
- apply scoped root and namespace option overrides during routing and dispatch
- improve namespace completion by delegating option suggestions to FalyxParser
- enrich missing-value errors and error hints
- extend OptionsManager to support multi-namespace option resolution and toggling
- integrate OptionsManager more deeply across Action, ChainedAction, and ActionGroup
- propagate shared runtime configuration through execution layers
- refine action composition model (sequential + parallel execution semantics)
- improve lifecycle consistency across BaseAction, Action, ChainedAction, and ActionGroup
- begin aligning execution flow with centralized context and options handling
wip: routing and root option parsing behavior still in progress
- introduce namespace-aware routing with RootParseResult, RouteResult, and InvocationContext
- register submenus as FalyxNamespace entries and resolve them through _entry_map
- refactor FalyxParser to parse only root options and leave recursive routing to Falyx
- add prepare_route, resolve_route, and route dispatch flow to Falyx
- update validator and completer to understand namespace entries and route results
- unify help/TLDR rendering APIs and add custom_tldr support on Command
- tighten Command.resolve_args error handling and parser type validation
- improve CommandRunner dependency validation and argv handling
- add BottomBar.has_items and improve wrapped executor error messages
- add tests for execution options, resolve_args, command runner, and route-aware validation
