[连续对话判断]：完成自动持续对话和播报打断，包含回复意图判断、免唤醒追问和打断回归测试

src/owner_voice_pet/config.py

@@ -52,6 +52,13 @@ class AppConfig:
     context_mode: str = "session_memory"
     context_max_messages: int = 12
     context_max_chars: int = 12000
+    continuous_dialog_enabled: bool = True
+    continuation_decision_provider: str = "hybrid"
+    continuation_confidence_threshold: float = 0.65
+    followup_listen_timeout_ms: int = 3000
+    barge_in_enabled: bool = True
+    barge_in_min_speech_ms: int = 250
+    barge_in_echo_guard_ms: int = 500
 
     @classmethod
     def from_dotenv(cls, path: str | Path = ".env", prefix: str = "OWNER_") -> "AppConfig":
@@ -111,6 +118,18 @@ class AppConfig:
             context_mode=(get("CONTEXT_MODE", "session_memory") or "session_memory").lower(),
             context_max_messages=int(get("CONTEXT_MAX_MESSAGES", "12") or "12"),
             context_max_chars=int(get("CONTEXT_MAX_CHARS", "12000") or "12000"),
+            continuous_dialog_enabled=(get("CONTINUOUS_DIALOG_ENABLED", "1") or "1").lower()
+            not in {"0", "false", "no"},
+            continuation_decision_provider=(
+                get("CONTINUATION_DECISION_PROVIDER", "hybrid") or "hybrid"
+            ).lower(),
+            continuation_confidence_threshold=float(
+                get("CONTINUATION_CONFIDENCE_THRESHOLD", "0.65") or "0.65"
+            ),
+            followup_listen_timeout_ms=int(get("FOLLOWUP_LISTEN_TIMEOUT_MS", "3000") or "3000"),
+            barge_in_enabled=(get("BARGE_IN_ENABLED", "1") or "1").lower() not in {"0", "false", "no"},
+            barge_in_min_speech_ms=int(get("BARGE_IN_MIN_SPEECH_MS", "250") or "250"),
+            barge_in_echo_guard_ms=int(get("BARGE_IN_ECHO_GUARD_MS", "500") or "500"),
         )
 
     @classmethod
@@ -340,6 +359,41 @@ class AppConfig:
                     "startup",
                 )
             )
+        if self.continuation_decision_provider not in {"hybrid", "rule", "llm"}:
+            errors.append(
+                ProviderError(
+                    ErrorCode.CONFIG_MISSING_VALUE,
+                    "OWNER_CONTINUATION_DECISION_PROVIDER must be hybrid, rule, or llm",
+                    False,
+                    "config",
+                    "startup",
+                )
+            )
+        if not 0 < self.continuation_confidence_threshold <= 1:
+            errors.append(
+                ProviderError(
+                    ErrorCode.CONFIG_MISSING_VALUE,
+                    "OWNER_CONTINUATION_CONFIDENCE_THRESHOLD must be in (0, 1]",
+                    False,
+                    "config",
+                    "startup",
+                )
+            )
+        for name, value in {
+            "OWNER_FOLLOWUP_LISTEN_TIMEOUT_MS": self.followup_listen_timeout_ms,
+            "OWNER_BARGE_IN_MIN_SPEECH_MS": self.barge_in_min_speech_ms,
+            "OWNER_BARGE_IN_ECHO_GUARD_MS": self.barge_in_echo_guard_ms,
+        }.items():
+            if value < 0:
+                errors.append(
+                    ProviderError(
+                        ErrorCode.CONFIG_MISSING_VALUE,
+                        f"{name} must be non-negative",
+                        False,
+                        "config",
+                        "startup",
+                    )
+                )
         return errors
 
     def api_url(self, path: str) -> str: