fix dark mode, storybook config, and minor UI issues

- Add color scheme toggle to Storybook preview via globalTypes
- Remove @storybook/addon-actions (built into Storybook 9+)
- Include .storybook/ files in tsconfig.storybook.json
- Fix InlineError show more button color for readability
- Use transparent variant on Remove button for consistent red in dark mode

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

clients/web/package-lock.json

@@ -20,7 +20,6 @@
         "@chromatic-com/storybook": "^5.0.1",
         "@eslint/js": "^9.39.4",
         "@storybook/addon-a11y": "^10.2.19",
-        "@storybook/addon-actions": "^9.0.8",
         "@storybook/addon-docs": "^10.2.19",
         "@storybook/addon-onboarding": "^10.2.19",
         "@storybook/addon-vitest": "^10.2.19",
@@ -1696,17 +1695,6 @@
         "storybook": "^10.2.19"
       }
     },
-    "node_modules/@storybook/addon-actions": {
-      "version": "9.0.8",
-      "resolved": "https://registry.npmjs.org/@storybook/addon-actions/-/addon-actions-9.0.8.tgz",
-      "integrity": "sha512-LFePu7PPnWN0Il/uoUpmA5T0J0C7d6haJIbg0pXrjxW2MQVSYXE4S4LSUz8fOImltBDV3xAl6tLPYHFj6VcrOA==",
-      "dev": true,
-      "license": "MIT",
-      "funding": {
-        "type": "opencollective",
-        "url": "https://opencollective.com/storybook"
-      }
-    },
     "node_modules/@storybook/addon-docs": {
       "version": "10.2.19",
       "resolved": "https://registry.npmjs.org/@storybook/addon-docs/-/addon-docs-10.2.19.tgz",