Initial monorepo setup with architecture plan

- Monorepo structure: apps/ (planner, journal) + packages/ (ui, types, map, gpx, i18n)
- Tooling: pnpm workspaces + Turborepo
- Architecture plan documenting all resolved decisions from design review
- Shared types package with Route, Activity, and Waypoint interfaces
- MIT license

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

apps/journal/package.json

@@ -0,0 +1,17 @@
+{
+  "name": "@trails-cool/journal",
+  "private": true,
+  "version": "0.0.1",
+  "type": "module",
+  "scripts": {
+    "dev": "echo 'TODO: setup journal dev'",
+    "build": "echo 'TODO: setup journal build'"
+  },
+  "dependencies": {
+    "@trails-cool/ui": "workspace:*",
+    "@trails-cool/types": "workspace:*",
+    "@trails-cool/map": "workspace:*",
+    "@trails-cool/gpx": "workspace:*",
+    "@trails-cool/i18n": "workspace:*"
+  }
+}