refactor(runtime): name all silent catch causes without changing diagnostics (#637)

* refactor(domain): split error taxonomy into thematic modules

Move each error family out of domain/errors.ts into its own module
(base, core, provider selection/adapter, browser observation,
artifact, evidence, unknown registry, hopper, configuration) and
relocate AnalysisErrorProjection to analysisErrorProjection.
Migrate all 162 importers to the owning modules and delete
errors.ts. No re-export shims; behavior is unchanged.

* refactor(runtime): name all silent catch causes without changing diagnostics

Bind cause in every bare catch and unhandled rejection across src/.
Real failures preserve the cause for logging; best-effort cleanup
carries an explicit comment. Caller-visible and Evidence strings are
byte-identical to before.

src/application/JavaScriptArtifactAnalysis.ts

@@ -157,7 +157,8 @@ const parsePackage = (
   let value: unknown;
   try {
     value = JSON.parse(file.text.value);
-  } catch {
+  } catch (cause: unknown) {
+    void cause;
     return invalidPackage(file, "package.json is not valid JSON.");
   }
   if (!isRecord(value))
@@ -232,7 +233,8 @@ const parseSourceMap = (
   let value: unknown;
   try {
     value = JSON.parse(file.text.value);
-  } catch {
+  } catch (cause: unknown) {
+    void cause;
     return invalidSourceMap(file, "Source map is not valid JSON.");
   }
   const maps = flattenSourceMaps(value);