Release prep: fix CLI --version drift + drop dead source maps

[jbrecht]

Pre-publish fixes from the release-reviewer pass on 0.10.0.

• Blocker: tutorial-forge --version / tforge --version reported 0.9.0 — the literal in main.ts was missed in the 0.10.0 bump. Now reads from package.json at runtime (resolves to the package root in both dist and tsx-run dev), so it can't drift from the published version again.
• Cleanup: sourceMap: true emitted .js.map files into dist, which files: ["dist"] then shipped — but no .ts sources ship, so the maps were dead weight (and embedded original source paths). Turned off in tsconfig.base.json. example-app is unaffected (it builds with --noEmit).

Verified: clean rebuild emits 0 .map files, dist still has .js + .d.ts, and the built CLI prints 0.10.0.

[jbrecht]

Folded in two fixes from umami's 0.10.0 dogfood verification:

• Shipped JSDoc doc link — the settleUntil JSDoc (ships in dist/types.d.ts) referenced docs/writing-tutorials.md, which isn't in the published package. Now points at the hosted docs URL.
• doctor --setup progress line — prints … running adapter.setup (bounded by your adapter's own timeouts) before the probe, so the failure path doesn't read as a hang.

Both rebuilt clean (0 .map files, --version → 0.10.0).