Switch web to published @pior-labs/design-system@1.0.0

[iPior]

Motivation

• Replace the temporary GitHub branch artifact dependency with the newly published design system package so the app depends on a stable @pior-labs/design-system@1.0.0 release.
• Update source imports and CSS entrypoints to the new package name to keep theme provider and styles consistent across the web app.
• Ensure the @pior-labs scope resolves from GitHub Packages to allow fetching the published package during installs.

Description

• Replaced the GitHub branch dependency @ipior/custom-tailwind-shadcn-themes with @pior-labs/design-system at version 1.0.0 in packages/web/package.json.
• Updated CSS imports in packages/web/src/app.css to import @pior-labs/design-system/styles.css and @pior-labs/design-system/effects.css instead of the previous package.
• Updated packages/web/src/hooks/useTheme.tsx to import ThemeProvider, types and utilities from @pior-labs/design-system.
• Added a root .npmrc entry to point the @pior-labs scope at GitHub Packages (@pior-labs:registry=https://npm.pkg.github.com).

Testing

• Ran pnpm --filter @finlens/web install --lockfile-only, which failed due to registry authorization errors (npm returned 403 Forbidden for some packages), so lockfile update could not be validated in this environment.
• Ran pnpm --filter @finlens/web typecheck, which failed because @pior-labs/design-system could not be fetched/installed here and TypeScript could not resolve the module.
• pnpm --filter @finlens/web install --lockfile-only --offline was attempted and failed due to missing offline metadata for dependencies, so no successful install verification was possible.

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Codex Task