chore(db): 補齊 AIOps P1/P2/P6 migration SQL（已套用到 prod）

incident_evidence / agent_sessions / ai_governance_events 三表
IF NOT EXISTS，production DB 已手動確認存在並 apply。

2026-04-15 ogt + Claude Sonnet 4.6（亞太）

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

apps/api/migrations/phase_aiops_p1_p2_p6_tables.sql

@@ -0,0 +1,85 @@
+-- AIOps Phase 1 / Phase 2 / Phase 6 — 補齊缺失 DB 表
+-- ADR-081 (P1 EvidenceSnapshot) + ADR-082 (P2 AgentSession) + ADR-087 (P6 GovernanceEvent)
+-- 2026-04-15 ogt + Claude Sonnet 4.6（亞太）: 補齊三張缺失表，全開 P1-P6 必需
+
+-- ============================================================================
+-- 1. incident_evidence — ADR-081 Phase 1 EvidenceSnapshot 持久化
+-- ============================================================================
+CREATE TABLE IF NOT EXISTS incident_evidence (
+    id                      VARCHAR(36)     PRIMARY KEY,
+    incident_id             VARCHAR(30)     NOT NULL,
+    matched_playbook_id     VARCHAR(36),
+    schema_version          VARCHAR(10)     NOT NULL DEFAULT 'v1',
+
+    -- 8D 感官數據
+    k8s_state               JSONB,
+    recent_logs             TEXT,
+    metrics_snapshot        JSONB,
+    recent_deployments      JSONB,
+    business_metrics        JSONB,
+    historical_context      TEXT,
+    peer_health             JSONB,
+    dependency_topology     JSONB,
+    anomaly_context         JSONB,
+
+    -- 感官品質指標
+    mcp_health              JSONB           NOT NULL DEFAULT '{}',
+    collection_duration_ms  INTEGER,
+    sensors_attempted       INTEGER         NOT NULL DEFAULT 0,
+    sensors_succeeded       INTEGER         NOT NULL DEFAULT 0,
+
+    -- LLM 輸入摘要
+    evidence_summary        TEXT,
+
+    -- 執行前後 State
+    pre_execution_state     JSONB,
+    post_execution_state    JSONB,
+    verification_result     VARCHAR(20),
+
+    -- 時間戳
+    collected_at            TIMESTAMPTZ     NOT NULL DEFAULT NOW()
+);
+
+CREATE INDEX IF NOT EXISTS ix_incident_evidence_incident_id    ON incident_evidence (incident_id);
+CREATE INDEX IF NOT EXISTS ix_incident_evidence_collected_at   ON incident_evidence (collected_at);
+CREATE INDEX IF NOT EXISTS ix_incident_evidence_playbook_id    ON incident_evidence (matched_playbook_id);
+
+
+-- ============================================================================
+-- 2. agent_sessions — ADR-082 Phase 2 多 Agent 辯證 Immutable Event Log
+-- ============================================================================
+CREATE TABLE IF NOT EXISTS agent_sessions (
+    id          VARCHAR(36)     PRIMARY KEY,
+    session_id  VARCHAR(36)     NOT NULL,
+    incident_id VARCHAR(50)     NOT NULL,
+    agent_role  VARCHAR(20)     NOT NULL,
+    input_hash  VARCHAR(16)     NOT NULL DEFAULT '',
+    output_json JSONB           NOT NULL DEFAULT '{}',
+    latency_ms  INTEGER         NOT NULL DEFAULT 0,
+    vote        VARCHAR(20)     NOT NULL DEFAULT 'abstain',
+    degraded    BOOLEAN         NOT NULL DEFAULT FALSE,
+    created_at  TIMESTAMPTZ     NOT NULL DEFAULT NOW()
+);
+
+CREATE INDEX IF NOT EXISTS ix_agent_sessions_session_id    ON agent_sessions (session_id);
+CREATE INDEX IF NOT EXISTS ix_agent_sessions_incident_id   ON agent_sessions (incident_id);
+CREATE INDEX IF NOT EXISTS ix_agent_sessions_created_at    ON agent_sessions (created_at);
+CREATE INDEX IF NOT EXISTS ix_agent_sessions_session_role  ON agent_sessions (session_id, agent_role);
+
+
+-- ============================================================================
+-- 3. ai_governance_events — ADR-087 Phase 6 自我治理事件（不可變）
+-- ============================================================================
+CREATE TABLE IF NOT EXISTS ai_governance_events (
+    id           VARCHAR(36)  PRIMARY KEY,
+    event_type   VARCHAR(40)  NOT NULL,
+    triggered_at TIMESTAMPTZ  NOT NULL DEFAULT NOW(),
+    details      JSONB        NOT NULL DEFAULT '{}',
+    resolved     BOOLEAN      NOT NULL DEFAULT FALSE,
+    resolved_at  TIMESTAMPTZ,
+    resolved_by  VARCHAR(100)
+);
+
+CREATE INDEX IF NOT EXISTS ix_ai_governance_events_event_type    ON ai_governance_events (event_type);
+CREATE INDEX IF NOT EXISTS ix_ai_governance_events_triggered_at  ON ai_governance_events (triggered_at);
+CREATE INDEX IF NOT EXISTS ix_ai_governance_events_resolved      ON ai_governance_events (resolved);