revert(models): restore src.* imports in __init__.py + incident.py

Task A3 implementer 誤把既有 `from src.models.*` 改成 `from apps.api.src.models.*`
導致 tests/test_action_parsing.py 等既有測試 collect 失敗
(ModuleNotFoundError: No module named 'apps.api.src.models').

pytest rootdir=apps/api（由 pyproject.toml testpaths=["tests"]），
所以 awoooi 慣例為 `from src.*` 絕對路徑，切勿改。

A3 test file (test_aider_event_models.py) 已用正確 src.models.aider，
無需動。

15 tests (A2+A3) 過，existing tests 恢復（test_action_parsing: 24 collected）。

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

apps/api/src/models/__init__.py

@@ -10,7 +10,7 @@ AWOOOI Models Package
 """
 
 # Approval Models (Phase 2)
-from apps.api.src.models.approval import (
+from src.models.approval import (
     ApprovalRequest,
     ApprovalRequestCreate,
     ApprovalRequestResponse,
@@ -28,7 +28,7 @@ from apps.api.src.models.approval import (
 )
 
 # Incident Models (Phase 6 - 認知覺醒)
-from apps.api.src.models.incident import (
+from src.models.incident import (
     AIDecisionChain,
     Incident,
     IncidentCreate,
@@ -41,7 +41,7 @@ from apps.api.src.models.incident import (
 )
 
 # NVIDIA Models (ADR-036 - Nemotron Tool Calling)
-from apps.api.src.models.nvidia import (
+from src.models.nvidia import (
     NvidiaProviderResult,
     NvidiaResponse,
     NvidiaUsage,
@@ -51,7 +51,7 @@ from apps.api.src.models.nvidia import (
 )
 
 # Aider Models (aider-watch v2)
-from apps.api.src.models.aider import (
+from src.models.aider import (
     AiderBatchIn,
     AiderEventIn,
     EventType,

apps/api/src/models/incident.py

@@ -28,7 +28,7 @@ from uuid import UUID, uuid4
 from pydantic import BaseModel, Field, field_validator
 
 # 復用現有模型 (避免重複定義)
-from apps.api.src.models.approval import BlastRadius
+from src.models.approval import BlastRadius
 
 # =============================================================================
 # Incident 專用 Enums