feat: add project-aware agent workspace

AGENTS.md

@@ -26,8 +26,9 @@ execution belong in `next-tjwater-agent`.
 - `src/mocks/` owns MSW handlers and fixtures.
 - `src/test/` owns shared Vitest setup and repository-wide invariant tests.
 - `tests/browser/` owns product-level Playwright regressions.
-- `public/` contains static supply-network and SCADA assets plus the
-  runtime-config placeholder.
+- `public/` contains static supply-network, SCADA, bundled city-model release
+  assets, and the runtime-config placeholder. Keep the city-model manifest,
+  attribution, and referenced runtime archive content-hash aligned.
 - `server/` contains the same-origin Edge TTS adapter used by Vite and the
   production container.
 
@@ -67,6 +68,11 @@ or barrels for private implementation files.
 
 ## Component and Module Design
 
+- Follow [the style design guide](docs/style-design-guide.md) for UI changes:
+  preserve the local shadcn/ui design for all Agent dialogs, panels and menus.
+  Use Tailwind CSS with shared semantic tokens; apply Acrylic styling to map
+  and other workbench surfaces as specified by the guide. Keep feature
+  documents focused on business behavior.
 - Use TypeScript and React function components. Export explicit types at
   feature and adapter boundaries.
 - Use two-space indentation and kebab-case filenames. Use PascalCase for