fix: restore back/home/orientation/tv-remote/keyboard-runtime exports lost in rebase

Rebasing onto origin/main dropped these five package.json export entries during
conflict resolution (the granular-subpath commit's package.json changes silently
lost during merge). Restored, confirmed by pnpm typecheck across all 17 workspace
packages and the full unit-core suite (1023 files / 7581 tests).

Author: thymikee

packages/contracts/package.json

@@ -76,6 +76,10 @@
       "types": "./src/back-mode.ts",
       "default": "./src/back-mode.ts"
     },
+    "./back-runtime": {
+      "types": "./src/back-runtime.ts",
+      "default": "./src/back-runtime.ts"
+    },
     "./capture": {
       "types": "./src/facades/capture.ts",
       "default": "./src/facades/capture.ts"
@@ -144,6 +148,10 @@
       "types": "./src/gesture-plan-types.ts",
       "default": "./src/gesture-plan-types.ts"
     },
+    "./home-runtime": {
+      "types": "./src/home-runtime.ts",
+      "default": "./src/home-runtime.ts"
+    },
     "./interaction": {
       "types": "./src/facades/interaction.ts",
       "default": "./src/facades/interaction.ts"
@@ -164,6 +172,10 @@
       "types": "./src/interactor-types.ts",
       "default": "./src/interactor-types.ts"
     },
+    "./keyboard-runtime": {
+      "types": "./src/keyboard-runtime.ts",
+      "default": "./src/keyboard-runtime.ts"
+    },
     "./logs-runtime-plan": {
       "types": "./src/logs-runtime-plan.ts",
       "default": "./src/logs-runtime-plan.ts"
@@ -184,6 +196,10 @@
       "types": "./src/facades/observability.ts",
       "default": "./src/facades/observability.ts"
     },
+    "./orientation-runtime": {
+      "types": "./src/orientation-runtime.ts",
+      "default": "./src/orientation-runtime.ts"
+    },
     "./platform": {
       "types": "./src/facades/platform.ts",
       "default": "./src/facades/platform.ts"
@@ -276,6 +292,10 @@
       "types": "./src/tv-remote.ts",
       "default": "./src/tv-remote.ts"
     },
+    "./tv-remote-runtime": {
+      "types": "./src/tv-remote-runtime.ts",
+      "default": "./src/tv-remote-runtime.ts"
+    },
     "./type-text-runtime": {
       "types": "./src/type-text-runtime.ts",
       "default": "./src/type-text-runtime.ts"