optimize giteas performance with language detection

.gitattributes

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+# .gitattributes
+#
+# Optimize Gitea performance by excluding generated and vendored files
+# from language statistics and indexing.
+#
+# See: https://github.com/github/linguist/blob/master/docs/overrides.md
+
+# =============================================================================
+# Vendored Dependencies
+# =============================================================================
+node_modules/** linguist-vendored
+
+# =============================================================================
+# Generated Files - Coverage Reports
+# =============================================================================
+coverage/** linguist-generated
+.coverage/** linguist-generated
+public/coverage/** linguist-generated
+.nyc_output/** linguist-generated
+
+# =============================================================================
+# Generated Files - Build Artifacts
+# =============================================================================
+dist/** linguist-generated
+build/** linguist-generated
+
+# =============================================================================
+# Generated Files - Test Results
+# =============================================================================
+test-results/** linguist-generated
+playwright-report/** linguist-generated
+playwright-report-visual/** linguist-generated
+.vitest-results/** linguist-generated
+
+# =============================================================================
+# Generated Files - TSOA OpenAPI Spec & Routes
+# =============================================================================
+src/routes/routes.ts linguist-generated
+public/swagger.json linguist-generated
+
+# =============================================================================
+# Documentation Files
+# =============================================================================
+*.md linguist-documentation
+
+# =============================================================================
+# Line Ending Normalization
+# =============================================================================
+# Ensure consistent line endings across platforms
+* text=auto
+
+# Shell scripts should always use LF
+*.sh text eol=lf
+
+# Windows batch files should use CRLF
+*.bat text eol=crlf
+*.cmd text eol=crlf
+
+# SQL files should use LF
+*.sql text eol=lf
+
+# Configuration files
+*.json text
+*.yml text
+*.yaml text
+*.toml text
+*.ini text
+
+# Source code
+*.ts text
+*.tsx text
+*.js text
+*.jsx text
+*.cjs text
+*.mjs text
+*.css text
+*.scss text
+*.html text
+
+# =============================================================================
+# Binary Files (explicit binary to prevent corruption)
+# =============================================================================
+*.png binary
+*.jpg binary
+*.jpeg binary
+*.gif binary
+*.ico binary
+*.pdf binary
+*.woff binary
+*.woff2 binary
+*.ttf binary
+*.eot binary
+*.otf binary