feat(help & spinners): improve help rendering, async spinner handling, and pipeline demo

- Refactored `Command.help_signature` to return `(usage, description, tags)` instead of a Rich `Padding`/`Panel`.
- Replaced `show_help()` with `render_help()` in `Command` and `Falyx`.
- Updated Falyx help rendering to use Rich `Panel`/`Padding` consistently for cleaner UI.
- Swapped `print()` calls for `console.print()` for styled output.
- Added hooks to `ProcessAction` to announce analysis start/finish.
- Added spinners to test and deploy steps; simplified retry setup.
- Converted `remove()` to `async def remove()` for consistency.
- Added async lock to prevent concurrent Live loop start/stop races.
- Added debug logging when starting/stopping the Live loop.
- Updated `spinner_teardown_hook` to `await sm.remove(...)` to align with async `remove()`.
- Removed `rich.panel`/`rich.padding` from `Command` since panels are now built in `Falyx` help rendering.
- Bumped `rich` dependency to `^14.0`.
- Bumped version to 0.1.78.

This commit polishes help display, demo UX, and spinner lifecycle safety—making spinners thread/async safe and help output more structured and readable.

pyproject.toml

@@ -1,6 +1,6 @@
 [tool.poetry]
 name = "falyx"
-version = "0.1.77"
+version = "0.1.78"
 description = "Reliable and introspectable async CLI action framework."
 authors = ["Roland Thomas Jr <roland@rtj.dev>"]
 license = "MIT"
@@ -10,7 +10,7 @@ packages = [{ include = "falyx" }]
 [tool.poetry.dependencies]
 python = ">=3.10"
 prompt_toolkit = "^3.0"
-rich = "^13.0"
+rich = "^14.0"
 pydantic = "^2.0"
 python-json-logger = "^3.3.0"
 toml = "^0.10"