feat: F019 AI monitoring layer — output transparency & governance workspace

Full 2-panel workspace at /ops/ai-monitoring: metrics strip (total, failed,
pending, approval rate, top prompt version, active model), filterable output
table by type/status/error, and detail panel with output preview, prompt
versioning, error details, and role-aware review actions.

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

src/domain/aiOutput.ts

@@ -1,25 +1,44 @@
 import type { ReviewStatus } from './enums'
 
 export const AIOutputType = {
-  MATCH_SCORE: 'MATCH_SCORE',
-  EXPLAINABILITY: 'EXPLAINABILITY',
-  SIGNAL_EXTRACTION: 'SIGNAL_EXTRACTION',
-  NEED_PARSING: 'NEED_PARSING',
-  SUMMARY: 'SUMMARY',
-  RECOMMENDATION: 'RECOMMENDATION',
+  NEED_PARSE:           'NEED_PARSE',
+  FOLLOW_UP_QUESTIONS:  'FOLLOW_UP_QUESTIONS',
+  MATCH_EXPLANATION:    'MATCH_EXPLANATION',
+  COMPARE_SUMMARY:      'COMPARE_SUMMARY',
+  DECISION_BRIEF:       'DECISION_BRIEF',
+  DATA_QUALITY_SUMMARY: 'DATA_QUALITY_SUMMARY',
 } as const
 export type AIOutputType = typeof AIOutputType[keyof typeof AIOutputType]
 
+export const AIErrorType = {
+  SCHEMA_VALIDATION: 'SCHEMA_VALIDATION',
+  PROVIDER_TIMEOUT:  'PROVIDER_TIMEOUT',
+  INVALID_JSON:      'INVALID_JSON',
+  EMPTY_RESPONSE:    'EMPTY_RESPONSE',
+  RATE_LIMIT:        'RATE_LIMIT',
+} as const
+export type AIErrorType = typeof AIErrorType[keyof typeof AIErrorType]
+
+export interface AIOutputError {
+  type: AIErrorType
+  message: string
+  recoverable: boolean
+}
+
 export interface AIOutput {
   id: string
   type: AIOutputType
-  inputHash: string          // hash of the input for cache/dedup
-  outputJson: unknown        // raw output — typed per consumer
-  provider: string           // e.g. "openai", "anthropic"
-  model: string              // e.g. "gpt-4o", "claude-3-5-sonnet"
-  promptVersion: string      // semver of the prompt template used
-  schemaVersion: string      // semver of expected output schema
+  provider: string
+  model: string
+  promptVersion: string
+  schemaVersion: string
+  inputHash: string
+  outputPreview: string
   createdAt: string
-  reviewedBy?: string
-  reviewStatus?: ReviewStatus
+  latencyMs?: number
+  costEstimate?: number
+  reviewStatus: ReviewStatus
+  relatedEntityType: string
+  relatedEntityId: string
+  error?: AIOutputError
 }