Code Health: raise TypeScript source files to 9.5 #206

Raise Code Health of the hand-written TypeScript source in Arc.TypeScript to 9.5 or higher (new files 10), with no behavior change and no public API change. Scores measured on origin/main 4ee6683 (hotspots by 90-day change count). Generated code is out of scope.

Work worst first; characterization specs before each refactor; one behavior-preserving refactor per commit; ship as minor or patch PRs through the repository train. Anything that would break public API is split into a next-major issue instead.

Files below 9.5

• Source/Drizzle/PostgreSQLObservationManager.ts (4.55)
• Source/Tools/ProxyGenerator/SourceTypeResolver.ts (6.48)
• Source/Core/queries/modelBound/compileQueries.ts (7.21)
• Source/Tools/ProxyGenerator/renderSource.ts (7.44)
• Source/MongoDB/MongoReadModels.ts (7.51)
• Source/Core/queries/observable/ObservableQuerySession.ts (7.69)
• Source/Core/commands/executeCommandOperation.ts (7.85)
• Source/Tools/ProxyGenerator/renderArtifactMetadata.ts (7.90)
• Source/Core/http/handleRequest.ts (7.94)
• Source/Core/ArcApplication.ts (7.96)
• Source/Tools/ProxyGenerator/analyzeSource.ts (8.12)
• Source/Core/http/createRouteTable.ts (8.37)
• Source/Core/dependencyInjection/ServiceRegistry.ts (8.41)
• Source/Drizzle/DrizzleReadModels.ts (8.54)
• Source/Chronicle/withChronicle.ts (8.57)
• Source/Core/ArcServer.ts (8.63)
• Source/Core/configuration/loadConfiguration.ts (8.67)
• Source/Chronicle/ChronicleResponseHandler.ts (8.81)
• Source/Core/openApi/renderOpenApi.ts (8.90)
• Source/Core/queries/renderQuery.ts (8.91)
• Source/Core/commands/modelBound/compileCommand.ts (8.95)
• Source/Core/dependencyInjection/ServiceScope.ts (8.96)
• Source/Tools/ProxyGenerator/cli.ts (9.09)
• Source/Tools/ProxyGenerator/watchSource.ts (9.28)
• Source/Core/commands/runCommandOperation.ts (9.43)
• Source/Core/queries/queryOperation.ts (9.44)

Acceptance criteria

• Every listed file reaches Code Health 9.5 or higher, or has a documented reason for being left lower.
• Each refactor is behavior-preserving and backed by specs; lint, type-check and the existing specs pass.
• No public API or generated-proxy output changes.

Status

State: Paused — two files delivered in #207; rest deprioritized by focus change
Branch: arc23-candidate
Scope: Code Health checklist; worst-first
Delivered: Nothing yet.
Remaining: To be confirmed.
Follow-ups: None.