Restore published game harnesses and integrate health and chest fixes

[Noisemaker111]

Integrates gameplay fixes from #2 and #3 on current main and restores their standalone published-package harnesses. PR #1 remains separate: merged engine #1749 is not in published core 0.18.1, whose building palettes still accept only strings.

• Restore the lockfile, declared tsgo/assets dependencies, and editor0.18.0 pin avoiding unpublished navbake.
• Remove missing monorepo Vite imports/source aliases; scan published Tailwind classes so the game canvas fills the window.
• Preserve Studio hazard drain/regen and Robots once-only chests/damage feedback; check actual game/public assets.
• Add a published headless-runner Studio journey:100→82 hazard→90 regen→100 respawn.

Validation:128 target tests(25/15/88), all three typechecks and Vite builds pass. Actual standalone GameHost browser checks: no JS exceptions, Loopline ticket18→19, Robots character selection and firing16→14 rounds. Loopline/Robots report no model fallbacks or texture errors. Builds retain large-chunk warnings.

Remaining visual acceptance: browser entry into Studio hazard and Robots chest/vignette sequence were not reproduced. Those rules pass headless/command tests; ignored spawn URL probes are not counted. Editor persistence and unrelated games are unverified. GAME-PR-VERIFICATION.md records setup and limits. No merge, package publish, source override or production change.