general improvements (#17)

* refactor(hooks): simplify hook execution with shared context

- [x] Extract BaseInput struct to eliminate duplicate fields across hooks
- [x] Create RunHook handler pattern for session-start and user-prompt
- [x] Create RunStatuslineHook for fast statusline rendering without worker startup
- [x] Add HookContext struct to pass port, project, CWD, SessionID to handlers
- [x] Add db/interface.go with ObservationReader/Writer interfaces
- [x] Add comprehensive conflict management tests in sqlite/conflict_test.go
- [x] Add vector client tests for Count, ModelVersion, NeedsRebuild, GetStaleVectors
- [x] Add FilterByThreshold helper tests for query result filtering
- [x] Make handlers_test more robust for network-dependent update checks
- [x] Update package versions in UI

* Move to GORM + general cleanup

* feat(mcp): add observation relations discovery and scoring integration

- [x] Add find_related_observations MCP tool for discovering related observations by confidence
- [x] Integrate scoring calculator and recalculator into MCP server initialization
- [x] Add pattern, relation, and session stores to MCP server dependencies
- [x] Register MCP server in Claude Code settings during plugin installation
- [x] Update install scripts (bash, PowerShell) to configure MCP server settings
- [x] Switch plugin manifest files to template-based versioning (plugin.json.tpl, marketplace.json.tpl)
- [x] Update all MCP server tests to pass new dependency parameters

internal/worker/handlers_scoring.go

@@ -68,6 +68,7 @@ func (s *Service) handleObservationFeedback(w http.ResponseWriter, r *http.Reque
 			if err := observationStore.UpdateImportanceScore(r.Context(), id, newScore); err != nil {
 				// Log but don't fail - feedback was recorded
 				// Score will be updated on next recalculation cycle
+				_ = err // Explicitly ignore - non-critical operation
 			}
 		}
 	}
@@ -263,6 +264,7 @@ func (s *Service) handleUpdateConceptWeight(w http.ResponseWriter, r *http.Reque
 	if recalculator != nil {
 		if err := recalculator.RefreshConceptWeights(r.Context()); err != nil {
 			// Log but don't fail - weight was saved
+			_ = err // Explicitly ignore - non-critical operation
 		}
 	}
 
@@ -310,6 +312,7 @@ func (s *Service) handleTriggerRecalculation(w http.ResponseWriter, r *http.Requ
 	go func() {
 		if err := recalculator.RecalculateNow(r.Context()); err != nil {
 			// Log error but don't block response
+			_ = err // Explicitly ignore - background operation
 		}
 	}()
 
@@ -349,6 +352,7 @@ func (s *Service) incrementRetrievalCounts(ids []int64) {
 
 		if err := store.IncrementRetrievalCount(ctx, ids); err != nil {
 			// Log but don't fail - this is a background operation
+			_ = err // Explicitly ignore - background operation
 		}
 	}()
 }