fix: add TypeScript declarations for SCSS modules and images, consolidate CI workflows

- Add type declarations for .module.scss files
- Add type declarations for image imports (png, jpg, svg, etc.)
- Update tsconfig.json to include new type declaration files
- Consolidate duplicate lint/typecheck workflows into single Code Quality Check
- Remove redundant pr-lint-check.yml and push-lint-check.yml
- Unified workflow runs both ESLint and TypeScript checks

AGENTS.md

@@ -55,17 +55,6 @@
 
 ## Development Workflow
 
-### Commands
-- `pnpm dev` - Start dev server (port 4000)
-- `pnpm build` - Production build
-- `pnpm start` - Start production server
-- `pnpm lint` - Check for linting issues
-- `pnpm lintfix` - Auto-fix linting issues
-- `pnpm typecheck` - Run TypeScript type checking
-- `pnpm security:audit` - Run security vulnerability scan
-- `pnpm security:check` - Generate security report (JSON)
-- `pnpm security:outdated` - Check for outdated dependencies
-
 ### Windsurf Commands Helper Script
 The project includes `windsurf-commands.sh` for common development tasks:
 
@@ -83,13 +72,7 @@ The project includes `windsurf-commands.sh` for common development tasks:
 - Script provides consistent interface for development commands
 - All commands use `pnpm` internally
 - Includes error handling and user-friendly output with emojis
-- Can be used interchangeably with direct `pnpm run` commands
-
-### Before Committing
-1. Run `pnpm run lintfix` and `pnpm run lint` (or use `./windsurf-commands.sh lintfix` and `./windsurf-commands.sh lint`)
-2. Run `pnpm run typecheck` (or `./windsurf-commands.sh typecheck`) to ensure TypeScript compiles
-3. Run `pnpm run security:audit` (or `./windsurf-commands.sh security:audit`) to check for vulnerabilities
-4. Test changes in browser
+- Avoid using `pnpm run` commands directly
 
 ## File Naming
 - **Components**: PascalCase (`MainPage.tsx`)