chore: fix monorepo build pipeline and migrate shared to built package

- Root package.json: add workspace scripts (dev, build, test, test:cov, test:e2e)
  that delegate to actual scripts in shared/server/client workspaces
- shared: add tsup build step (CJS + ESM dual output, .d.ts); consumers now import
  from the built dist instead of raw TS source via path aliases
- server: replace tsc-alias with tsconfig-paths (tsc-alias mangled node_modules
  paths); fix MCP SDK path aliases to point to root node_modules (../node_modules)
- server/scripts/dev.mjs: delay node --watch until tsc -w signals first-pass done,
  eliminating the spurious restart on every dev startup
- client/vite.config.js + vitest.config.ts: remove @trek/shared path alias (no longer
  needed now that shared is a proper package)
- Consolidate package-lock.json at the workspace root; drop per-workspace lock files

package.json

@@ -0,0 +1,27 @@
+{
+  "name": "@trek/root",
+  "private": true,
+  "version": "3.0.22",
+  "workspaces": [
+    "client",
+    "server",
+    "shared"
+  ],
+  "scripts": {
+    "version:major": "npm version major --workspaces --include-workspace-root --no-git-tag-version",
+    "version:minor": "npm version minor --workspaces --include-workspace-root --no-git-tag-version",
+    "version:patch": "npm version patch --workspaces --include-workspace-root --no-git-tag-version",
+    "version:premajor": "npm version premajor --preid=rc --workspaces --include-workspace-root --no-git-tag-version",
+    "version:preminor": "npm version preminor --preid=beta --workspaces --include-workspace-root --no-git-tag-version",
+    "version:prepatch": "npm version prepatch --preid=alpha --workspaces --include-workspace-root --no-git-tag-version",
+    "version:prerelease": "npm version prerelease --preid=alpha --workspaces --include-workspace-root --no-git-tag-version",
+    "dev": "npm run build --workspace=shared && concurrently --names shared,server,client \"npm run build:watch --workspace=shared\" \"npm run dev --workspace=server\" \"npm run dev --workspace=client\"",
+    "build": "npm run build --workspace=shared && npm run build --workspace=server && npm run build --workspace=client",
+    "test": "npm run test --workspace=shared && npm run test --workspace=server && npm run test --workspace=client",
+    "test:cov": "npm run test:coverage --workspace=server && npm run test:coverage --workspace=client",
+    "test:e2e": "npm run test:e2e --workspace=server"
+  },
+  "devDependencies": {
+    "concurrently": "^9.2.1"
+  }
+}