feat: ship production deploy, Playwright e2e, and agent implementer

Add Docker atomic deploy tooling, CI, Playwright smoke/visual suite,
shared industrial theme, physics invariants, quality-mode wiring,
and a worktree-isolated agent implementer MVP with hard safety limits.

Co-authored-by: Cursor <cursoragent@cursor.com>

package-lock.json

@@ -19,6 +19,7 @@
         "vite": "latest"
       },
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         "@types/node": "^26.1.0",
         "@types/react": "^19.2.17",
         "@types/react-dom": "^19.2.3",
@@ -124,6 +125,22 @@
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       }
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@@ -1393,6 +1410,53 @@
         "url": "https://github.com/sponsors/jonschlinkert"
       }
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