perf(ci): run Tier A coverage concurrently with isolatedModules ts-jest (#1701)

Tier A coverage runs projects a few at a time (largest first, bounded Jest workers, buffered output, fail-fast kept) and ts-jest transpiles with isolatedModules instead of type-checking per process; five type re-exports become export type, two decorated inputs use import type. Unit Tests and Typechecks job: 26 min -> 9 min (Tier A step 23 min -> 6.5 min).

Co-Authored-By: Claude Fable 5.1 <noreply@anthropic.com>
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

libs/shared/database/tsconfig.spec.json

@@ -1,6 +1,7 @@
 {
     "extends": "./tsconfig.json",
     "compilerOptions": {
+        "emitDecoratorMetadata": false,
         "outDir": "../../../dist/out-tsc",
         "esModuleInterop": true,
         "module": "commonjs",

libs/shared/host-health/tsconfig.spec.json

@@ -1,6 +1,7 @@
 {
     "extends": "./tsconfig.json",
     "compilerOptions": {
+        "emitDecoratorMetadata": false,
         "outDir": "../../../dist/out-tsc",
         "module": "commonjs",
         "moduleResolution": "node10",

libs/shared/interfaces/tsconfig.spec.json

@@ -1,6 +1,7 @@
 {
     "extends": "./tsconfig.json",
     "compilerOptions": {
+        "emitDecoratorMetadata": false,
         "outDir": "../../../dist/out-tsc",
         "module": "commonjs",
         "moduleResolution": "node10",

libs/shared/logging/tsconfig.spec.json

@@ -1,6 +1,7 @@
 {
     "extends": "./tsconfig.json",
     "compilerOptions": {
+        "emitDecoratorMetadata": false,
         "outDir": "../../../dist/out-tsc",
         "module": "commonjs",
         "moduleResolution": "node10",

libs/shared/m3u-utils/tsconfig.spec.json

@@ -1,6 +1,7 @@
 {
     "extends": "./tsconfig.json",
     "compilerOptions": {
+        "emitDecoratorMetadata": false,
         "outDir": "../../../dist/out-tsc",
         "module": "commonjs",
         "moduleResolution": "node10",