feat(WP-0013): IHF Phase 12 — Platform Memory and Continuous Learning

Closes the long-range feedback loop: outcome signals now enrich the full
traceability chain and feed back into routing, triage, and AI proposals.

Schema (T01):
- outcome_correlations (CHECK correlation_type)
- pattern_performance_records
- adaptive_threshold_configs
- institutional_knowledge_entries (GIN tsvector FTS)
- learning_insights (CHECK insight_type)
- ALTER TABLE decision_records + requirement_candidates: outcome_summary JSONB
- AFTER INSERT trigger trg_enrich_lineage on outcome_signals
- contracts/core/ updated (outcome-summary-columns-v1, append-only addendum)

Correlation engine (T02):
- Application/Helper/CorrelationEngine.hs: pure annotation→outcome SQL
- Web/Controller/OutcomeCorrelations.hs: ComputeCorrelationsAction + index

Pattern performance (T03):
- Web/Controller/PatternPerformance.hs: ComputePatternPerformanceAction

Adaptive thresholds (T04):
- Web/Controller/AdaptiveThresholds.hs: CalibrateThresholdsAction
- Application/Helper/FrictionScore.hs: applyAdaptiveWeights

Institutional knowledge (T05):
- DistilDecisionAction in DecisionRecords controller
- Web/Controller/InstitutionalKnowledge.hs: QueryKnowledgeBaseAction

Lineage enrichment (T06):
- Web/Controller/LineageEnrichment.hs: EnrichLineageAction (batch backfill)
- enrich_lineage_on_outcome_batch() PL/pgSQL helper in migration

Learning dashboard (T07):
- Web/Controller/LearningDashboard.hs: 5-panel autoRefresh view
- "Learning" nav link in FrontController

API v2 learning endpoints (T08):
- GET /api/v2/outcome-correlations, /pattern-performance, /knowledge-base/{id}
- OpenAPI schemas: OutcomeCorrelation, PatternPerformanceRecord, InstitutionalKnowledgeEntry

GAAF scorecard + docs (T09):
- Core 3.8→3.9, Functional 3.6→3.8, overall 3.61→3.68
- CLAUDE.md: IHF v0.2 complete, no active workplan

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

Web/Controller/Api/V2/OpenApi.hs

@@ -90,6 +90,9 @@ buildOpenApiSpec = do
                 , "DecisionRecord" .= drSchema
                 , "DeploymentRecord" .= depSchema
                 , "OutcomeSignal" .= sigSchema
+                , "OutcomeCorrelation" .= outcomeCorrelationSchema
+                , "PatternPerformanceRecord" .= patternPerformanceSchema
+                , "InstitutionalKnowledgeEntry" .= institutionalKnowledgeSchema
                 ]
             , "securitySchemes" .= object
                 [ "BearerAuth" .= object
@@ -367,6 +370,51 @@ sigSchema = object
         ]
     ]
 
+outcomeCorrelationSchema :: Value
+outcomeCorrelationSchema = object
+    [ "type" .= ("object" :: Text)
+    , "properties" .= object
+        [ "id"                 .= uuidProp
+        , "hubId"              .= uuidProp
+        , "annotationCategory" .= strProp
+        , "correlationType"    .= strProp
+        , "correlationScore"   .= object ["type" .= ("number" :: Text)]
+        , "sampleCount"        .= object ["type" .= ("integer" :: Text)]
+        , "computedAt"         .= dtProp
+        ]
+    ]
+
+patternPerformanceSchema :: Value
+patternPerformanceSchema = object
+    [ "type" .= ("object" :: Text)
+    , "properties" .= object
+        [ "id"                   .= uuidProp
+        , "widgetPatternId"      .= uuidProp
+        , "hubId"                .= uuidProp
+        , "adoptionCount"        .= object ["type" .= ("integer" :: Text)]
+        , "positiveOutcomeCount" .= object ["type" .= ("integer" :: Text)]
+        , "totalOutcomeCount"    .= object ["type" .= ("integer" :: Text)]
+        , "positiveOutcomeRate"  .= object ["type" .= ("number" :: Text)]
+        , "meanOutcomeValue"     .= object ["type" .= ("number" :: Text)]
+        , "outcomeRank"          .= object ["type" .= ("integer" :: Text)]
+        , "calibratedAt"         .= dtProp
+        ]
+    ]
+
+institutionalKnowledgeSchema :: Value
+institutionalKnowledgeSchema = object
+    [ "type" .= ("object" :: Text)
+    , "properties" .= object
+        [ "id"               .= uuidProp
+        , "hubId"            .= uuidProp
+        , "decisionRecordId" .= uuidProp
+        , "summary"          .= strProp
+        , "tags"             .= object ["type" .= ("array" :: Text)]
+        , "createdAt"        .= dtProp
+        , "updatedAt"        .= dtProp
+        ]
+    ]
+
 uuidProp :: Value
 uuidProp = object ["type" .= ("string" :: Text), "format" .= ("uuid" :: Text)]