refactor(test): colocate pure-domain tests and reduce test debt (#471)

* refactor(test): colocate pure-domain tests and reduce test debt

Move focused immutable domain/contracts/adapter tests from
tests/composition/** beside their production owners under src/** as
colocated *.test.ts/*.fixture.ts, and relocate persistence-shaped
composition tests under tests/boundary/filesystem/**. Update import
paths, the Vitest project topology (shared worker context for pure
domain/contracts and recording-port service projects), the test
migration ledger, testing docs, and AGENTS.md to match.

Generated with [Devin](https://devin.ai)

Co-Authored-By: Devin <158243242+devin-ai-integration[bot]@users.noreply.github.com>

* docs: remove test migration ledger

The cutover is complete and the ledger is no longer referenced anywhere
in source, scripts, or the docs gate. Drop the standalone artifact.

Generated with [Devin](https://devin.ai)

Co-Authored-By: Devin <158243242+devin-ai-integration[bot]@users.noreply.github.com>

* docs: clean up stale migration artifacts

Remove empty directories left by the test migration and replace the
"final cutover" language in docs/testing.md with standing PR guidance
that no longer references the completed migration.

Generated with [Devin](https://devin.ai)

Co-Authored-By: Devin <158243242+devin-ai-integration[bot]@users.noreply.github.com>

* fix: repair CI failures from schema, knip, and stale generated artifacts

Three root causes fixed:

1. catalog-schemas.mjs: valuesAt only traversed anyOf from Zod's
   toJSONSchema, not oneOf. The webScreenshotDiffSchema change to a
   discriminated union produces oneOf, so the product catalog generator
   could not derive the web_screenshot_diff schema version. Add oneOf
   traversal.

2. conformancePackage.ts: the test rewrite removed the only imports of
   ScenarioManifest, ReplayPlan, ShimPlan, and ExpectedEvidence, making
   them unused exports that knip flags. Remove the dead type aliases.

3. Regenerate stale artifacts (product catalog, MCP tool catalog, skill
   metadata, conformance manifest) that drifted from the source changes.

Generated with [Devin](https://devin.ai)

Co-Authored-By: Devin <158243242+devin-ai-integration[bot]@users.noreply.github.com>

---------

Co-authored-by: Devin <158243242+devin-ai-integration[bot]@users.noreply.github.com>

src/application/JavaScriptModuleRelationships.ts

@@ -1,6 +1,11 @@
 import { posix } from "node:path";
 
 import type { ApplicationNode } from "../domain/javascriptApplicationGraph.js";
+import {
+  completeApplicationCoverage,
+  partialApplicationCoverage,
+  truncatedApplicationCoverage,
+} from "../domain/javascriptApplicationEvidenceSchemas.js";
 import type {
   JavaScriptModuleOrigin,
   JavaScriptSemanticIr,
@@ -16,11 +21,12 @@ import {
 } from "./JavaScriptArtifactGraphContext.js";
 import {
   astObservationEvidence,
-  completeReconstructionCoverage,
-  partialReconstructionCoverage,
   staticInferenceEvidence,
 } from "./JavaScriptArtifactGraphEvidence.js";
-import { resolveArtifactPathByContext } from "./JavaScriptArtifactPathResolution.js";
+import {
+  resolveArtifactPathByContext,
+  type ArtifactPathResolution,
+} from "./JavaScriptArtifactPathResolution.js";
 import { projectJavaScriptExportReturnShapes } from "./JavaScriptReturnShapeProjection.js";
 
 interface SemanticAnalysis {
@@ -36,18 +42,24 @@ interface RelationshipInput {
   readonly link: JavaScriptSemanticModuleLink;
 }
 
-interface ResolvedModuleTarget {
+type ResolvedModuleTarget = {
   readonly node: ApplicationNode;
-  readonly path: string | null;
-  readonly file: JavaScriptArtifactFile | null;
-  readonly status:
-    | "resolved"
-    | "not-found"
-    | "unavailable"
-    | "external"
-    | "rejected";
   readonly limitations: readonly string[];
-}
+} & (
+  | {
+      readonly path: string;
+      readonly file: JavaScriptArtifactFile;
+      readonly status: "resolved";
+    }
+  | {
+      readonly path: null;
+      readonly file: null;
+      readonly status: Exclude<
+        ArtifactPathResolution["resolution_status"],
+        "resolved"
+      >;
+    }
+);
 
 /** Create one path-scoped source-module identity for every analyzed source file. */
 export const addJavaScriptSourceModules = (
@@ -239,26 +251,32 @@ const resolveModuleTarget = (
         ? "require"
         : "import",
   });
-  const path = resolution.resolved_path;
-  const file = path === null ? undefined : input.context.filesByPath.get(path);
-  const node =
-    path === null
-      ? undefined
-      : (input.context.sourceModuleNodes.get(path) ??
-        input.context.fileNodes.get(path));
-  if (path !== null && file !== undefined && node !== undefined)
+  if (resolution.resolution_status !== "resolved")
     return {
-      node,
-      path,
-      file,
-      status: "resolved",
+      node: unresolvedModuleNode(
+        input,
+        specifier,
+        resolution.resolution_status,
+      ),
+      path: null,
+      file: null,
+      status: resolution.resolution_status,
       limitations: resolution.limitations,
     };
+  const path = resolution.resolved_path;
+  const file = input.context.filesByPath.get(path);
+  const node =
+    input.context.sourceModuleNodes.get(path) ??
+    input.context.fileNodes.get(path);
+  if (file === undefined || node === undefined)
+    throw new TypeError(
+      `Resolved artifact path ${path} is absent from its graph context.`,
+    );
   return {
-    node: unresolvedModuleNode(input, specifier, resolution.resolution_status),
-    path: null,
-    file: null,
-    status: resolution.resolution_status,
+    node,
+    path,
+    file,
+    status: "resolved",
     limitations: resolution.limitations,
   };
 };
@@ -266,7 +284,7 @@ const resolveModuleTarget = (
 const unresolvedModuleNode = (
   input: RelationshipInput,
   specifier: string,
-  status: ResolvedModuleTarget["status"],
+  status: Exclude<ResolvedModuleTarget["status"], "resolved">,
 ): ApplicationNode =>
   input.context.accumulator.addNode({
     kind: "javascript-module",
@@ -360,12 +378,10 @@ const semanticCoverage = (
     unit: "items" as const,
   }));
   if (semantic.ir.coverage.status === "complete")
-    return completeReconstructionCoverage(limits);
-  return partialReconstructionCoverage(
-    limits,
-    semantic.ir.coverage.omittedCount,
-    semantic.ir.coverage.status === "truncated",
-  );
+    return completeApplicationCoverage(limits);
+  return semantic.ir.coverage.status === "truncated"
+    ? truncatedApplicationCoverage(limits, semantic.ir.coverage.omittedCount)
+    : partialApplicationCoverage(limits, semantic.ir.coverage.omittedCount);
 };
 
 const moduleFormat = (