Refactor wake phrase handling: introduce REQUIRE_WAKE_WORD configuration, update documentation, and adjust assistant behavior for improved user experience.

tests/conftest.py

@@ -0,0 +1,14 @@
+"""Test runs use the stock wake phrases, not whatever a developer happens to
+have in the project's `.env`. The speech tests are written against the
+defaults; a local `WAKE_WORDS=...` that narrows them would fail the suite for
+a reason that isn't in the code. Environment variables set by the shell still
+win, and everything else in `.env` is left alone."""
+
+import os
+
+os.environ.setdefault("WAKE_WORDS", (
+    "hey bolt,bolt,thunderbolt,hey thunderbolt,ok bolt,okay bolt,yo bolt,hi bolt,"
+    "hey assistant,ok assistant,okay assistant,"
+    "hey bolts,hey volt,hey bold,hey boat,okay volt,hey thunder bolt,thunder bolt"
+))
+os.environ.setdefault("ANYWHERE_WAKE_WORDS", "assistant")