feat(cli): add interactive payload explorer

[jmtts]

Summary

• make CLI payload output interactive with arrow-key navigation
• fix CLI logger initialization so module names aren't treated as log levels
• handle BaseModel payloads so Pydantic responses can be explored field by field
• guard against missing payloads so the explorer skips messages without structured data
• ensure arrow keys correctly traverse siblings and parent/child levels in the explorer
• handle raw terminal escape sequences so down-arrow navigation works reliably
• keep parent nodes visible and block entering primitive values while navigating
• polish explorer UI with breadcrumb path, expand/collapse icons, and inline key hints

Testing

• python -m werk24.cli.werk24 --help
• pytest

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https://chatgpt.com/codex/tasks/task_e_68b98c00c4e48332a257c0e05b972e24

[chatgpt-codex-connector]

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[chatgpt-codex-connector]

[P1] Guard POSIX-only termios imports to keep CLI usable on Windows

The new interactive explorer pulls in termios/tty at module import time. Those modules are only present on Unix, so importing werk24.cli.commands.techread now raises ModuleNotFoundError on Windows before the CLI can even parse arguments, even when the interactive view is never used. This makes python -m werk24.cli.werk24 --help fail on Windows, whereas the previous implementation printed payloads fine. Consider importing these modules lazily inside the explorer logic and falling back to a non-interactive display when they are unavailable.

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