diff --git a/app/gitignore-gen/src/templates/loader.rs b/app/gitignore-gen/src/templates/loader.rs
new file mode 100644
index 0000000..49fc93a
--- /dev/null
+++ b/app/gitignore-gen/src/templates/loader.rs
@@ -0,0 +1,1638 @@
+use crate::core::error::AppError;
+use crate::templates::{Category, Template, TemplateCollection, TemplateSet};
+use serde::{Deserialize, Serialize};
+use std::collections::HashMap;
+use std::fs::{self, File};
+use std::io::{self, Write};
+use std::path::{Path, PathBuf};
+
+pub struct TemplateLoader {
+    base_path: PathBuf,
+    embedded_templates: HashMap<&'static str, &'static str>,
+    template_cache: Option<TemplateSet>,
+}
+
+impl TemplateLoader {
+    pub fn new(base_path: Option<PathBuf>) -> Self {
+        let mut loader = Self {
+            base_path: base_path.unwrap_or_else(|| PathBuf::from("resources/templates")),
+            embedded_templates: HashMap::new(),
+            template_cache: None,
+        };
+        loader.init_embedded_templates();
+        loader
+    }
+
+    fn init_embedded_templates(&mut self) {
+        self.embedded_templates.insert(
+            "rust",
+            r#"# Generated by gitignore-gen
+
+# Build results
+/target
+**/target/
+Cargo.lock
+
+# IDE
+.idea/
+.vscode/
+*.swp
+*.swo
+*~
+.DS_Store
+
+# IDE - CLion
+/.idea/
+cmake-build-*/
+
+# IDE - VSCode
+.vscode/
+
+# IDE - IntelliJ
+*.iml
+*.ipr
+*.iws
+.idea/
+
+# OS
+.DS_Store
+.DS_Store?
+._*
+.Spotlight-V100
+.Trashes
+ehthumbs.db
+Thumbs.db
+
+# Logs
+logs
+*.log
+npm-debug.log*
+yarn-debug.log*
+yarn-error.log*
+pnpm-debug.log*
+lerna-debug.log*
+
+# Editor
+*.orig
+*.rej
+*.bak
+*~
+
+# Testing
+coverage/
+
+# Misc
+*.pem
+.env
+.env.local
+.env.*.local
+"#,
+        );
+
+        self.embedded_templates.insert(
+            "python",
+            r#"# Generated by gitignore-gen
+
+# Byte-compiled / optimized / DLL files
+__pycache__/
+*.py[cod]
+*$py.class
+
+# C extensions
+*.so
+
+# Distribution / packaging
+.Python
+build/
+develop-eggs/
+dist/
+downloads/
+eggs/
+.eggs/
+lib/
+lib64/
+parts/
+sdist/
+var/
+wheels/
+*.egg-info/
+.installed.cfg
+*.egg
+
+# PyInstaller
+*.manifest
+*.spec
+
+# Installer logs
+pip-log.txt
+pip-delete-this-directory.txt
+
+# Unit test / coverage reports
+htmlcov/
+.tox/
+.coverage
+.coverage.*
+.cache
+nosetests.xml
+coverage.xml
+*.cover
+.hypothesis/
+
+# Translations
+*.mo
+*.pot
+
+# Django stuff:
+*.log
+local_settings.py
+db.json
+
+# Flask stuff:
+instance/
+.webassets-cache
+
+# Scrapy stuff:
+.scrapy
+
+# Sphinx documentation
+docs/_build/
+
+# PyBuilder
+.pybuilder/
+target/
+
+# Jupyter Notebook
+.ipynb_checkpoints
+
+# IPython
+profile_default/
+ipython_config.py
+
+# pyenv
+.python-version
+
+# pipenv
+Pipfile.lock
+
+# poetry
+poetry.lock
+
+# pdm
+.pdm.toml
+
+# PEP 582
+__pypackages__/
+
+# Celery stuff
+celerybeat-schedule
+celerybeat.pid
+
+# SageMath parsed files
+*.sage.py
+
+# Environments
+.env
+.venv
+env/
+venv/
+ENV/
+env.bak/
+venv.bak/
+
+# Spyder project settings
+.spyderproject
+.spyproject
+
+# Rope project settings
+.ropeproject
+
+# mkdocs docs
+/site
+
+# mypy
+.mypy_cache/
+.dmypy.json
+dmypy.json
+
+# Pyre type checker
+.pyre/
+
+# pytype static type analyzer
+.pytype/
+
+# Cython debug symbols
+cython_debug/
+
+# IDE
+.vscode/
+.idea/
+*.swp
+*.swo
+*~
+"#,
+        );
+
+        self.embedded_templates.insert(
+            "javascript",
+            r#"# Generated by gitignore-gen
+
+# Dependencies
+node_modules/
+jspm_packages/
+
+# Build outputs
+dist/
+build/
+*.local
+
+# Logs
+logs
+*.log
+npm-debug.log*
+yarn-debug.log*
+yarn-error.log*
+lerna-debug.log*
+
+# Runtime data
+pids
+*.pid
+*.seed
+*.pid.lock
+
+# Coverage directory used by tools like istanbul
+coverage/
+*.lcov
+.nyc_output/
+
+# nyc test coverage
+.nyc_output/
+
+# Grunt intermediate storage
+.grunt
+
+# Bower dependency directory
+bower_components/
+
+# node-waf configuration
+.lock-wscript
+
+# Compiled binary addons
+*.node
+
+# Debug logs
+npm-debug.log*
+yarn-debug.log*
+yarn-error.log*
+
+# Dependency directories
+node_modules/
+jspm_packages/
+
+# Optional eslint cache
+.eslintcache
+
+# Optional REPL history
+.node_repl_history
+
+# dotenv environment variable files
+.env
+.env.development.local
+.env.test.local
+.env.production.local
+.env.local
+
+# IDE
+.vscode/
+.idea/
+*.swp
+*.swo
+*~
+"#,
+        );
+
+        self.embedded_templates.insert(
+            "typescript",
+            r#"# Generated by gitignore-gen
+
+# Dependencies
+node_modules/
+
+# Build outputs
+dist/
+build/
+*.local
+
+# Logs
+logs
+*.log
+npm-debug.log*
+yarn-debug.log*
+yarn-error.log*
+lerna-debug.log*
+
+# Runtime data
+pids
+*.pid
+*.seed
+*.pid.lock
+
+# Coverage directory used by tools like istanbul
+coverage/
+*.lcov
+.nyc_output/
+
+# Compiled output
+*.tsbuildinfo
+
+# IDE
+.vscode/
+.idea/
+*.swp
+*.swo
+*~
+"#,
+        );
+
+        self.embedded_templates.insert(
+            "go",
+            r#"# Generated by gitignore-gen
+
+# Binaries for programs and plugins
+*.exe
+*.exe~
+*.dll
+*.so
+*.dylib
+
+# Test binary (built with go test -c)
+*.test
+
+# Output of go coverage tool
+*.out
+
+# Go workspace file
+go.work
+
+# IDE
+.vscode/
+.idea/
+*.swp
+*.swo
+*~
+"#,
+        );
+
+        self.embedded_templates.insert(
+            "java",
+            r#"# Generated by gitignore-gen
+
+# Compiled class files
+*.class
+
+# Log files
+*.log
+
+# BlueJ files
+*.ctxt
+
+# Mobile Tools for Java (J2ME)
+.mtj.tmp/
+
+# Package Files
+*.jar
+*.war
+*.nar
+*.ear
+*.zip
+*.tar.gz
+*.rar
+
+# Maven
+target/
+pom.xml.tag
+pom.xml.releaseBackup
+pom.xml.versionsBackup
+pom.xml.next
+release.properties
+dependency-reduced-pom.xml
+buildNumber.properties
+.mvn/timing.properties
+.mvn/wrapper/maven-wrapper.jar
+
+# Gradle
+.gradle/
+build/
+!gradle-wrapper.jar
+
+# IDE
+.idea/
+*.iml
+*.ipr
+*.iws
+.project
+.classpath
+.settings/
+.vscode/
+*.swp
+*.swo
+*~
+"#,
+        );
+
+        self.embedded_templates.insert(
+            "nodejs",
+            r#"# Generated by gitignore-gen
+
+# Dependencies
+node_modules/
+jspm_packages/
+
+# Build outputs
+dist/
+build/
+*.local
+
+# Logs
+logs
+*.log
+npm-debug.log*
+yarn-debug.log*
+yarn-error.log*
+lerna-debug.log*
+
+# Runtime data
+pids
+*.pid
+*.seed
+*.pid.lock
+
+# Coverage directory
+coverage/
+.nyc_output/
+
+# Grunt
+.grunt/
+
+# Bower
+bower_components/
+
+# dotenv
+.env
+.env.local
+
+# IDE
+.vscode/
+.idea/
+*.swp
+*.swo
+*~
+"#,
+        );
+
+        self.embedded_templates.insert(
+            "ruby",
+            r#"# Generated by gitignore-gen
+
+/.bundle
+/vendor/bundle/
+/.yardoc
+/Yardoc.db
+/doc/
+/rdoc/
+/.bundle/
+/vendor/bundle/
+/.rspec
+/coverage/
+
+# RVM and RBenv
+.rvmrc
+.rbenv-vars
+.ruby-version
+.ruby-gemset
+
+# Gemfiles
+Gemfile
+Gemfile.lock
+
+# Bundler
+vendor/bundle/
+
+# IDE
+.vscode/
+.idea/
+*.swp
+*.swo
+*~
+"#,
+        );
+
+        self.embedded_templates.insert(
+            "php",
+            r#"# Generated by gitignore-gen
+
+/vendor/
+composer.lock
+.env
+.env.local
+
+# IDE
+.vscode/
+.idea/
+*.swp
+*.swo
+*~
+"#,
+        );
+
+        self.embedded_templates.insert(
+            "csharp",
+            r#"# Generated by gitignore-gen
+
+# Build results
+[Dd]ebug/
+[Dd]ebugPublic/
+[Rr]elease/
+[Rr]eleases/
+x64/
+x86/
+bld/
+[Bb]in/
+[Oo]bj/
+.vs/
+
+# Visual Studio 2015/2017 cache/options directory
+.vs/
+
+# Uncomment if you have tasks that create the project's static files in wwwroot
+#wwwroot/
+
+# MSTest test Results
+[Tt]est[Rr]esult*/
+[Bb]uild[Ll]og.*
+
+# NUNIT
+*.VisualState.xml
+TestResult.xml
+nunit-*.xml
+
+# Build Results of an ATL Project
+[Dd]ebugPS/
+[Rr]eleasePS/
+dlldata.c
+
+# Benchmark Results
+BenchmarkDotNet.Artifacts/
+
+# .NET Core
+project.lock.json
+project.fragment.lock.json
+artifacts/
+
+# ASP.NET Scaffolding
+ScaffoldingReadMe.txt
+
+# StyleCop
+StyleCopReport.xml
+
+# Files built by Visual Studio
+*_i.c
+*_p.c
+*_h.h
+*.ilk
+*.meta
+*.obj
+*.iobj
+*.pch
+*.pdb
+*.ipdb
+*.pgc
+*.pgd
+*.rsp
+*.sbr
+*.tlb
+*.tli
+*.tlh
+*.tmp
+*.tmp_proj
+*_wpftmp.csproj
+*.log
+*.tlog
+*.vspscc
+*.vssscc
+.builds
+*.pidb
+*.svclog
+*.scc
+
+# Chutzpah Test Files
+*_Chutzpah*
+
+# Visual C++ cache files
+ipch/
+*.aps
+*.ncb
+*.opendb
+*.opensdf
+*.sdf
+*.cachefile
+*.VC.db
+*.VC.VC.opendb
+
+# Openshift files
+*.orig
+*.rej
+
+# Sublime Text files
+*~
+"#,
+        );
+
+        self.embedded_templates.insert(
+            "cpp",
+            r#"# Generated by gitignore-gen
+
+# Prerequisites
+*.d
+
+# Compiled Object files
+*.slo
+*.lo
+*.o
+*.obj
+
+# Precompiled Headers
+*.gch
+*.pch
+
+# Compiled Dynamic libraries
+*.so
+*.dylib
+*.dll
+
+# Fortran module files
+*.mod
+*.smod
+
+# Compiled Static libraries
+*.lai
+*.la
+*.a
+*.lib
+
+# Executables
+*.exe
+*.out
+*.app
+
+# IDE
+.vscode/
+.idea/
+*.swp
+*.swo
+*~
+"#,
+        );
+
+        self.embedded_templates.insert(
+            "swift",
+            r#"# Generated by gitignore-gen
+
+# Xcode
+*.xcodeproj/
+!*.xcodeproj/project.pbxproj
+*.xcworkspace/
+!*.xcworkspace/contents.xcworkspacedata
+*.xcuserstate
+*.xcscmblueprint
+*.xcscheme
+
+# Build
+build/
+DerivedData/
+
+# Swift Package Manager
+.build/
+.swiftpm/
+
+# Carthage
+Carthage/Build/
+Carthage/Checkouts/
+
+# IDE
+.vscode/
+.idea/
+*.swp
+*.swo
+*~
+"#,
+        );
+
+        self.embedded_templates.insert(
+            "kotlin",
+            r#"# Generated by gitignore-gen
+
+# Compiled class files
+*.class
+
+# Log files
+*.log
+
+# Kotlin
+*.kotlin/
+
+# Gradle
+.gradle/
+build/
+
+# IDE
+.idea/
+*.iml
+*.ipr
+*.iws
+*.swp
+*.swo
+*~
+"#,
+        );
+
+        self.embedded_templates.insert(
+            "scala",
+            r#"# Generated by gitignore-gen
+
+# Compiled class files
+*.class
+
+# Log files
+*.log
+
+# Scala
+*.scala_history
+project/plugins/
+target/
+lib_managed/
+src_managed/
+
+# IDE
+.vscode/
+.idea/
+*.swp
+*.swo
+*~
+"#,
+        );
+
+        self.embedded_templates.insert(
+            "dart",
+            r#"# Generated by gitignore-gen
+
+# Dart stuff
+.dart_tool/
+.pub-cache/
+.pub/
+build/
+
+# IDE
+.vscode/
+.idea/
+*.swp
+*.swo
+*~
+"#,
+        );
+
+        self.embedded_templates.insert(
+            "docker",
+            r#"# Generated by gitignore-gen
+
+# Docker
+.docker/
+
+# IDE
+.vscode/
+.idea/
+*.swp
+*.swo
+*~
+"#,
+        );
+
+        self.embedded_templates.insert(
+            "kubernetes",
+            r#"# Generated by gitignore-gen
+
+# Kubernetes
+*.kubeconfig
+/kube/
+
+# IDE
+.vscode/
+.idea/
+*.swp
+*.swo
+*~
+"#,
+        );
+
+        self.embedded_templates.insert(
+            "terraform",
+            r#"# Generated by gitignore-gen
+
+# Terraform
+*.tfstate
+*.tfvars
+.terraform/
+*.tfplan
+
+# IDE
+.vscode/
+.idea/
+*.swp
+*.swo
+*~
+"#,
+        );
+
+        self.embedded_templates.insert(
+            "django",
+            r#"# Generated by gitignore-gen
+
+# Python
+__pycache__/
+*.py[cod]
+*$py.class
+
+# Django
+*.log
+*.pot
+*.pyc
+db.json
+local_settings.py
+
+# Media
+media/
+
+# IDE
+.vscode/
+.idea/
+*.swp
+*.swo
+*~
+"#,
+        );
+
+        self.embedded_templates.insert(
+            "rails",
+            r#"# Generated by gitignore-gen
+
+# Ruby
+.bundle
+vendor/bundle/
+/.ruby-version
+.ruby-gemset
+
+# Rails
+/log/*
+/tmp/*
+/vendor/bundle/*
+/node_modules/
+
+# Storage
+/storage/*
+/config/master.key
+
+# IDE
+.vscode/
+.idea/
+*.swp
+*.swo
+*~
+"#,
+        );
+
+        self.embedded_templates.insert(
+            "react",
+            r#"# Generated by gitignore-gen
+
+# Dependencies
+node_modules/
+
+# Build
+build/
+*.local
+
+# IDE
+.vscode/
+.idea/
+*.swp
+*.swo
+*~
+"#,
+        );
+
+        self.embedded_templates.insert(
+            "vue",
+            r#"# Generated by gitignore-gen
+
+# Dependencies
+node_modules/
+
+# Build
+dist/
+
+# IDE
+.vscode/
+.idea/
+*.swp
+*.swo
+*~
+"#,
+        );
+
+        self.embedded_templates.insert(
+            "angular",
+            r#"# Generated by gitignore-gen
+
+# Dependencies
+node_modules/
+
+# Build
+dist/
+*.local
+
+# IDE
+.vscode/
+.idea/
+*.swp
+*.swo
+*~
+"#,
+        );
+
+        self.embedded_templates.insert(
+            "nextjs",
+            r#"# Generated by gitignore-gen
+
+# Dependencies
+node_modules/
+
+# Build
+.next/
+out/
+build/
+
+# Testing
+coverage/
+
+# Misc
+*.pem
+.env
+
+# IDE
+.vscode/
+.idea/
+*.swp
+*.swo
+*~
+"#,
+        );
+
+        self.embedded_templates.insert(
+            "flask",
+            r#"# Generated by gitignore-gen
+
+# Python
+__pycache__/
+*.py[cod]
+*$py.class
+
+# Flask
+instance/
+.webassets-cache
+
+# IDE
+.vscode/
+.idea/
+*.swp
+*.swo
+*~
+"#,
+        );
+
+        self.embedded_templates.insert(
+            "laravel",
+            r#"# Generated by gitignore-gen
+
+# PHP
+/vendor/
+node_modules/
+
+# Laravel
+/bootstrap/cache/*
+/storage/*
+.env
+.env.local
+.env.*.local
+
+# IDE
+.vscode/
+.idea/
+*.swp
+*.swo
+*~
+"#,
+        );
+
+        self.embedded_templates.insert(
+            "vscode",
+            r#"# Generated by gitignore-gen
+
+# VSCode
+.vscode/
+*.code-workspace
+
+# IDE
+*.swp
+*.swo
+*~
+"#,
+        );
+
+        self.embedded_templates.insert(
+            "jetbrains",
+            r#"# Generated by gitignore-gen
+
+# JetBrains
+*.iml
+*.ipr
+*.iws
+.idea/
+
+# IDE
+*.swp
+*.swo
+*~
+"#,
+        );
+
+        self.embedded_templates.insert(
+            "eclipse",
+            r#"# Generated by gitignore-gen
+
+# Eclipse
+*.pydevproject
+.project
+.metadata/
+*.launch
+
+# IDE
+*.swp
+*.swo
+*~
+"#,
+        );
+
+        self.embedded_templates.insert(
+            "vim",
+            r#"# Generated by gitignore-gen
+
+# Vim
+[._]*.s[a-w][a-z]
+[._]s[a-w][a-z]
+*.un~
+Session.vim
+.netrwhist
+
+# IDE
+*.swp
+*.swo
+*~
+"#,
+        );
+
+        self.embedded_templates.insert(
+            "emacs",
+            r#"# Generated by gitignore-gen
+
+# Emacs
+*~
+\#*\#
+/.elpa/
+
+# IDE
+*.swp
+*.swo
+*~
+"#,
+        );
+
+        self.embedded_templates.insert(
+            "windows",
+            r#"# Generated by gitignore-gen
+
+# Windows
+*.tmp
+*.tmp.*
+*.log
+*.log.*
+*.user
+*.userosscache
+*.suo
+
+# IDE
+*.swp
+*.swo
+*~
+"#,
+        );
+
+        self.embedded_templates.insert(
+            "macos",
+            r#"# Generated by gitignore-gen
+
+# macOS
+.DS_Store
+.DS_Store?
+._*
+.Spotlight-V100
+.Trashes
+ehthumbs.db
+Thumbs.db
+
+# IDE
+*.swp
+*.swo
+*~
+"#,
+        );
+
+        self.embedded_templates.insert(
+            "linux",
+            r#"# Generated by gitignore-gen
+
+# Linux
+*~
+core
+
+# IDE
+*.swp
+*.swo
+*~
+"#,
+        );
+
+        self.embedded_templates.insert(
+            "mysql",
+            r#"# Generated by gitignore-gen
+
+# MySQL
+*.sql
+*.dump
+*.mysqldump
+
+# IDE
+.vscode/
+.idea/
+*.swp
+*.swo
+*~
+"#,
+        );
+
+        self.embedded_templates.insert(
+            "postgresql",
+            r#"# Generated by gitignore-gen
+
+# PostgreSQL
+*.sql
+*.dump
+*.psql
+
+# IDE
+.vscode/
+.idea/
+*.swp
+*.swo
+*~
+"#,
+        );
+
+        self.embedded_templates.insert(
+            "mongodb",
+            r#"# Generated by gitignore-gen
+
+# MongoDB
+*.dump
+
+# IDE
+.vscode/
+.idea/
+*.swp
+*.swo
+*~
+"#,
+        );
+
+        self.embedded_templates.insert(
+            "redis",
+            r#"# Generated by gitignore-gen
+
+# Redis
+*.rdb
+
+# IDE
+.vscode/
+.idea/
+*.swp
+*.swo
+*~
+"#,
+        );
+
+        self.embedded_templates.insert(
+            "cmake",
+            r#"# Generated by gitignore-gen
+
+# CMake
+CMakeCache.txt
+CMakeFiles/
+cmake_install.cmake
+Makefile
+
+# IDE
+.vscode/
+.idea/
+*.swp
+*.swo
+*~
+"#,
+        );
+
+        self.embedded_templates.insert(
+            "maven",
+            r#"# Generated by gitignore-gen
+
+# Maven
+target/
+pom.xml.tag
+pom.xml.releaseBackup
+pom.xml.next
+release.properties
+
+# IDE
+.vscode/
+.idea/
+*.swp
+*.swo
+*~
+"#,
+        );
+
+        self.embedded_templates.insert(
+            "gradle",
+            r#"# Generated by gitignore-gen
+
+# Gradle
+.gradle/
+build/
+
+# IDE
+.vscode/
+.idea/
+*.swp
+*.swo
+*~
+"#,
+        );
+
+        self.embedded_templates.insert(
+            "webpack",
+            r#"# Generated by gitignore-gen
+
+# Webpack
+node_modules/
+dist/
+build/
+
+# IDE
+.vscode/
+.idea/
+*.swp
+*.swo
+*~
+"#,
+        );
+
+        self.embedded_templates.insert(
+            "yarn",
+            r#"# Generated by gitignore-gen
+
+# Yarn
+.yarn-cache/
+.yarn-integrity
+node_modules/
+
+# IDE
+.vscode/
+.idea/
+*.swp
+*.swo
+*~
+"#,
+        );
+
+        self.embedded_templates.insert(
+            "npm",
+            r#"# Generated by gitignore-gen
+
+# NPM
+node_modules/
+*.log
+
+# IDE
+.vscode/
+.idea/
+*.swp
+*.swo
+*~
+"#,
+        );
+
+        self.embedded_templates.insert(
+            "poetry",
+            r#"# Generated by gitignore-gen
+
+# Poetry
+poetry.lock
+
+# Python
+__pycache__/
+.venv/
+venv/
+
+# IDE
+.vscode/
+.idea/
+*.swp
+*.swo
+*~
+"#,
+        );
+
+        self.embedded_templates.insert(
+            "yarn",
+            r#"# Generated by gitignore-gen
+
+# Yarn
+.yarn/
+.yarn-cache/
+.yarn-integrity
+node_modules/
+
+# IDE
+.vscode/
+.idea/
+*.swp
+*.swo
+*~
+"#,
+        );
+
+        self.embedded_templates.insert(
+            "bun",
+            r#"# Generated by gitignore-gen
+
+# Bun
+bun.lockb
+node_modules/
+
+# IDE
+.vscode/
+.idea/
+*.swp
+*.swo
+*~
+"#,
+        );
+
+        self.embedded_templates.insert(
+            "deno",
+            r#"# Generated by gitignore-gen
+
+# Deno
+.deno/
+deno.lock
+
+# IDE
+.vscode/
+.idea/
+*.swp
+*.swo
+*~
+"#,
+        );
+
+        self.embedded_templates.insert(
+            "elixir",
+            r#"# Generated by gitignore-gen
+
+# Elixir
+/_build/
+/deps/
+
+# Mix
+mix.lock
+
+# IDE
+.vscode/
+.idea/
+*.swp
+*.swo
+*~
+"#,
+        );
+
+        self.embedded_templates.insert(
+            "clojure",
+            r#"# Generated by gitignore-gen
+
+# Clojure
+/target
+/classes
+/checkouts
+/profile.boot
+
+# IDE
+.vscode/
+.idea/
+*.swp
+*.swo
+*~
+"#,
+        );
+
+        self.embedded_templates.insert(
+            "haskell",
+            r#"# Generated by gitignore-gen
+
+# Haskell
+/dist
+/dist-*
+/cabal-dev
+
+# IDE
+.vscode/
+.idea/
+*.swp
+*.swo
+*~
+"#,
+        );
+
+        self.embedded_templates.insert(
+            "rust",
+            r#"# Generated by gitignore-gen
+
+# Build results
+/target
+**/target/
+Cargo.lock
+
+# IDE
+.idea/
+.vscode/
+*.swp
+*.swo
+*~
+.DS_Store
+
+# Editor
+*.orig
+*.rej
+*.bak
+*~
+
+# Testing
+coverage/
+
+# Misc
+*.pem
+.env
+.env.local
+.env.*.local
+"#,
+        );
+    }
+
+    pub fn list_templates(&self) -> Vec<&str> {
+        self.embedded_templates.keys().cloned().collect()
+    }
+
+    pub fn get_template(&self, name: &str) -> Option<Template> {
+        let name_lower = name.to_lowercase();
+        for (key, content) in &self.embedded_templates {
+            if key.to_lowercase() == name_lower {
+                return Some(Template::new(
+                    key.to_string(),
+                    Category::Language,
+                    content.lines().map(|s| s.to_string()).collect(),
+                ));
+            }
+        }
+        None
+    }
+
+    pub fn search_templates(&self, query: &str) -> Vec<&str> {
+        let query_lower = query.to_lowercase();
+        self.embedded_templates
+            .keys()
+            .filter(|k| k.to_lowercase().contains(&query_lower))
+            .cloned()
+            .collect()
+    }
+
+    pub fn filter_by_category(&self, category: &Category) -> Vec<&str> {
+        let category_str = category.to_string().to_lowercase();
+        self.embedded_templates
+            .keys()
+            .filter(|k| {
+                let key_lower = k.to_lowercase();
+                key_lower.contains(&category_str)
+                    || match category {
+                        Category::Language => vec![
+                            "python", "javascript", "typescript", "rust", "go", "java",
+                            "ruby", "php", "swift", "kotlin", "scala", "dart", "csharp",
+                            "cpp", "c", "haskell", "clojure", "elixir", "fsharp", "r",
+                            "julia", "lua", "perl", "fsharp"
+                        ]
+                        .contains(&key_lower.as_str()),
+                        Category::Framework => vec![
+                            "react", "vue", "angular", "django", "rails", "flask",
+                            "laravel", "nextjs", "nuxt", "svelte", "gatsby", "hugo",
+                            "jekyll", "nestjs", "express"
+                        ]
+                        .contains(&key_lower.as_str()),
+                        Category::IDE => vec![
+                            "vscode", "jetbrains", "eclipse", "vim", "emacs",
+                            "sublimetext", "atom"
+                        ]
+                        .contains(&key_lower.as_str()),
+                        Category::OS => vec!["windows", "macos", "linux"]
+                            .contains(&key_lower.as_str()),
+                        Category::Database => vec![
+                            "mysql", "postgresql", "mongodb", "redis", "sqlite"
+                        ]
+                        .contains(&key_lower.as_str()),
+                        Category::BuildTool => vec!["maven", "gradle", "cmake", "webpack"]
+                            .contains(&key_lower.as_str()),
+                        _ => false,
+                    }
+            })
+            .cloned()
+            .collect()
+    }
+
+    pub fn combine_templates(&self, templates: &[&str]) -> Result<String, AppError> {
+        let mut combined = String::new();
+        combined.push_str("# Generated by gitignore-gen\n");
+        combined.push_str("# Combined templates:\n");
+
+        let mut template_names = Vec::new();
+        let mut seen_patterns = std::collections::HashSet::new();
+
+        for template_name in templates {
+            template_names.push(template_name.to_string());
+            if let Some(template) = self.get_template(template_name) {
+                combined.push_str("# ");
+                combined.push_str(template_name);
+                combined.push('\n');
+
+                for pattern in &template.patterns {
+                    if !pattern.starts_with('#') && !pattern.is_empty() {
+                        if seen_patterns.insert(pattern.clone()) {
+                            combined.push_str(pattern);
+                            combined.push('\n');
+                        }
+                    }
+                }
+            }
+        }
+
+        Ok(combined)
+    }
+
+    pub fn load_all(&mut self) -> Result<TemplateSet, AppError> {
+        let mut set = TemplateSet::new();
+
+        for (name, content) in &self.embedded_templates {
+            let template = Template::new(
+                name.to_string(),
+                Category::Language,
+                content.lines().map(|s| s.to_string()).collect(),
+            );
+            set.add(template);
+        }
+
+        self.template_cache = Some(set.clone());
+        Ok(set)
+    }
+}