Use TypeScript project references for incremental builds (#7180)

* [AI] Fix duplicate typechecking by consolidating into lage

Previously `yarn typecheck` ran:
1. `tsc -b` (type-checks all packages via project references)
2. `tsc -p tsconfig.root.json --noEmit` (checks root bin/*.ts)
3. `lage typecheck` (runs `tsc --noEmit` per package - duplicate!)

Now it runs:
1. `tsc -p tsconfig.root.json --noEmit` (checks root bin/*.ts)
2. `lage typecheck` (handles everything via dependency ordering)

Changes:
- Remove `tsc -b` from root typecheck script
- Add `dependsOn: ["^typecheck"]` to lage config for correct ordering
- Change per-package typecheck from `tsc --noEmit` to `tsc -b` so
  declarations are emitted for dependent packages

https://claude.ai/code/session_01P7mtAHphD6f1FsnQRwWBaW

* Add release notes for PR #7180

---------

Co-authored-by: Claude <noreply@anthropic.com>
Co-authored-by: github-actions[bot] <github-actions[bot]@users.noreply.github.com>

packages/loot-core/package.json

@@ -61,7 +61,7 @@
     "test": "npm-run-all -cp 'test:*'",
     "test:node": "ENV=node vitest --run",
     "test:web": "ENV=web vitest --run -c vitest.web.config.ts",
-    "typecheck": "tsc --noEmit && tsc-strict"
+    "typecheck": "tsc -b && tsc-strict"
   },
   "dependencies": {
     "@jlongster/sql.js": "^1.6.7",