normalise (states.py)

The canonical status vocabulary. call-api owns it; everything else is a dialect. The voice agent has its own words for how a call ended (`goal_achieved`, `no_audio`, `abandoned`, `callee_hangup`, `setup_failed`, …) and BRIEF §4 names a different set of terminal call states (`busy

# Source: https://github.com/faeton/zvonok | License: MIT | Copyright 2026 faeton
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"""The canonical status vocabulary. call-api owns it; everything else is a dialect.

The voice agent has its own words for how a call ended (`goal_achieved`,
`no_audio`, `abandoned`, `callee_hangup`, `setup_failed`, …) and BRIEF §4 names a
different set of terminal call states (`busy`, `no_answer`, `voicemail`, …).
Letting both float was flagged as a phase-2 trap (BRIEF §9, trap 3): a status
that means different things in two services eventually drives a wrong retry, and
a wrong retry redials a stranger. So the agent's vocabulary is treated as an
INPUT DIALECT and normalised here, once, on the way in.
"""

from __future__ import annotations

# Li

... (truncated -- full source via MCP)