build: type-check via tsgo project references, decoupled from bundler

[lukecotter]

📝 PR Overview

The bundlers we use are type-blind — rollup (via swc) and rolldown only transpile, they never type-check. Today three identical tsc --noemit calls are copy-pasted into build:dev, build:dev:fast, and lint, welding type-checking into the bundler step, and composite: true was set on two projects with no references (dead config). This makes type-checking a single, separate step over TypeScript project references, run by the Go-native tsgo for speed.

🛠️ Changes made

• Replace the three inline tsc --noemit -p … calls with one project-references build: bundlers (build:dev/build:dev:fast) are now transpile-only; type-checking is the typecheck script.
• Wire real project references: apex-log-parser becomes composite (emitDeclarationOnly), log-viewer/lana reference it, and a new root solution tsconfig.json orchestrates the graph — enabling incremental .tsbuildinfo caching (skip unchanged projects).
• Add typecheck (tsgo -b) and typecheck:tsc (tsc -b, fallback/parity). @typescript/native-preview (tsgo) is ~7.7× faster on cold runs (~0.3s vs ~2.3s); warm/incremental runs are sub-150ms for both.
• Gate the production build on typecheck, and run it inside lint — preserving the existing CI PR gate (ci.yml's Verify Files job runs pnpm run lint). Dev watch stays check-free (IDE/LSP handles it).
• .gitignore: add *.tsbuildinfo.

🧩 Type of change (check all applicable)

• 🐛 Bug fix - something not working as expected
• ✨ New feature – adds new functionality
• ♻️ Refactor - internal changes with no user impact
• ⚡ Performance Improvement
• 📝 Documentation - README or documentation site changes
• 🔧 Chore - dev tooling, CI, config
• 💥 Breaking change

🔗 Related Issues

✅ Tests added?

• 👍 yes
• 🙅 no, not needed
• 🙋 no, I need help

📚 Docs updated?

• 🙅 not needed

Test plan

• pnpm lint (eslint + prettier + tsgo -b) — green
• pnpm test — 886/886 pass
• pnpm run typecheck cold/incremental verified; typecheck:tsc parity (same diagnostics)
• Decoupling: injected type error fails typecheck/build/lint but build:dev still bundles; prod build + build:dev:fast green

Anything else we need to know? [optional]

tsgo is a TypeScript 7 preview; it agreed with stock tsc -b here, and typecheck:tsc is a one-word fallback if the preview ever drifts. Consumers resolve apex-log-parser via source paths (shared with the swc bundler config), so the reference provides build ordering + incremental caching rather than cross-project dedup — a deliberate trade to avoid bundler-config changes.