feat(ui): improve lesson cards and theme button, optimize dependency checks

UI Improvements:
- Highlight classroom number in lesson cards using Badge component
  * Applied to both mobile and desktop views
  * Improved visual distinction for classroom information

- Fix theme switcher button layout on mobile
  * Add "Тема" text label inside the button (visible on all devices)
  * Remove redundant absolute positioned span below button
  * Fix text overflow issues on mobile devices
  * Improve button isolation to prevent text escaping

Performance Optimization:
- Optimize dependency installation check in deployment scripts
  * Replace timestamp-based check with content hash comparison
  * Use MD5 hash of package.json and lock files to detect real changes
  * Save hash after successful installation for future comparisons
  * Significantly reduce unnecessary npm install runs during updates
  * Add .dependencies.hash to .gitignore

Files changed:
- src/widgets/schedule/lesson.tsx - Added Badge for classroom
- src/features/theme-switch/index.tsx - Added text label to button
- src/widgets/navbar/index.tsx - Improved button container structure
- src/pages/index.tsx - Removed redundant theme label span
- scripts/manage.sh - Optimized dependency check logic
- scripts/install.sh - Optimized dependency check logic
- .gitignore - Added .dependencies.hash exclusion

scripts/install.sh

@@ -169,38 +169,54 @@ cd "$INSTALL_DIR"
 # Check if node_modules exists and is up to date
 NEED_INSTALL=true
 LOCK_FILE=""
+DEPENDENCY_HASH_FILE="$INSTALL_DIR/.dependencies.hash"
+
 if [ -f "package-lock.json" ]; then
     LOCK_FILE="package-lock.json"
 elif [ -f "pnpm-lock.yaml" ]; then
     LOCK_FILE="pnpm-lock.yaml"
 fi
 
-if [ -d "node_modules" ] && [ -n "$LOCK_FILE" ]; then
-    # Check if package.json is newer than lock file
-    if [ "package.json" -nt "$LOCK_FILE" ]; then
-        echo -e "${YELLOW}package.json is newer than $LOCK_FILE, reinstalling...${NC}"
-        NEED_INSTALL=true
-    else
-        # Check if all dependencies are installed by checking if node_modules/.bin exists and has entries
-        if [ -d "node_modules/.bin" ] && [ "$(ls -A node_modules/.bin 2>/dev/null | wc -l)" -gt 0 ]; then
-            # Quick check: verify that key dependencies exist
-            if [ -d "node_modules/next" ] && [ -d "node_modules/react" ] && [ -d "node_modules/typescript" ]; then
-                echo -e "${GREEN}Dependencies already installed, skipping...${NC}"
-                NEED_INSTALL=false
+if [ -d "node_modules" ] && [ -n "$LOCK_FILE" ] && [ -f "package.json" ] && [ -f "$LOCK_FILE" ]; then
+    # Calculate hash of package files (content-based, not timestamp)
+    CURRENT_HASH=$(cat package.json "$LOCK_FILE" 2>/dev/null | md5sum | cut -d' ' -f1)
+    
+    # Check if hash file exists and matches
+    if [ -f "$DEPENDENCY_HASH_FILE" ]; then
+        SAVED_HASH=$(cat "$DEPENDENCY_HASH_FILE" 2>/dev/null)
+        if [ "$CURRENT_HASH" = "$SAVED_HASH" ]; then
+            # Hash matches, check if key dependencies exist
+            if [ -d "node_modules/.bin" ] && [ "$(ls -A node_modules/.bin 2>/dev/null | wc -l)" -gt 0 ]; then
+                if [ -d "node_modules/next" ] && [ -d "node_modules/react" ] && [ -d "node_modules/typescript" ]; then
+                    echo -e "${GREEN}Dependencies are up to date (content unchanged), skipping installation...${NC}"
+                    NEED_INSTALL=false
+                else
+                    echo -e "${YELLOW}Hash matches but some dependencies missing, reinstalling...${NC}"
+                    NEED_INSTALL=true
+                fi
             else
-                echo -e "${YELLOW}Some dependencies missing, reinstalling...${NC}"
+                echo -e "${YELLOW}Hash matches but node_modules incomplete, reinstalling...${NC}"
                 NEED_INSTALL=true
             fi
         else
-            echo -e "${YELLOW}node_modules appears incomplete, reinstalling...${NC}"
+            echo -e "${YELLOW}Dependency files changed (content differs), reinstalling...${NC}"
             NEED_INSTALL=true
         fi
+    else
+        echo -e "${YELLOW}No hash file found, need to install dependencies...${NC}"
+        NEED_INSTALL=true
     fi
 fi
 
 if [ "$NEED_INSTALL" = true ]; then
     echo -e "${YELLOW}Installing dependencies...${NC}"
     npm ci --legacy-peer-deps --production=false
+    
+    # Save hash after successful installation
+    if [ -n "$LOCK_FILE" ] && [ -f "package.json" ] && [ -f "$LOCK_FILE" ]; then
+        cat package.json "$LOCK_FILE" 2>/dev/null | md5sum | cut -d' ' -f1 > "$DEPENDENCY_HASH_FILE"
+        echo -e "${GREEN}Saved dependency hash for future checks${NC}"
+    fi
 else
     echo -e "${GREEN}Dependencies are up to date, skipping installation${NC}"
 fi