diff --git a/.editorconfig b/.editorconfig
new file mode 100644
index 0000000..5a929b9
--- /dev/null
+++ b/.editorconfig
@@ -0,0 +1,48 @@
+# EditorConfig is awesome: https://EditorConfig.org
+
+# top-most EditorConfig file
+root = true
+
+# Unix-style newlines with a newline ending every file
+[*]
+charset = utf-8
+end_of_line = lf
+insert_final_newline = true
+trim_trailing_whitespace = true
+
+# PHP files
+[*.php]
+indent_style = space
+indent_size = 4
+
+# YAML files
+[*.{yml,yaml}]
+indent_style = space
+indent_size = 2
+
+# JSON files
+[*.json]
+indent_style = space
+indent_size = 2
+
+# Markdown files
+[*.md]
+trim_trailing_whitespace = false
+
+# XML files
+[*.xml]
+indent_style = space
+indent_size = 2
+
+# Makefile
+[Makefile]
+indent_style = tab
+
+# Batch files
+[*.bat]
+end_of_line = crlf
+
+# Git files
+[.git*]
+indent_style = space
+indent_size = 2
\ No newline at end of file
diff --git a/.gitattributes b/.gitattributes
new file mode 100644
index 0000000..03e83f0
--- /dev/null
+++ b/.gitattributes
@@ -0,0 +1,41 @@
+# Exclude files from distribution archives
+/.github export-ignore
+/tests export-ignore
+/examples export-ignore
+/build export-ignore
+/docs export-ignore
+/.gitattributes export-ignore
+/.gitignore export-ignore
+/.php-cs-fixer.php export-ignore
+/phpunit.xml.dist export-ignore
+/phpstan.neon.dist export-ignore
+/CHANGELOG.md export-ignore
+/CONTRIBUTING.md export-ignore
+/Makefile export-ignore
+/.editorconfig export-ignore
+
+# Ensure all files use LF line endings
+* text=auto eol=lf
+
+# Explicitly declare text files
+*.php text
+*.json text
+*.md text
+*.xml text
+*.yml text
+*.yaml text
+*.txt text
+*.sh text
+*.sql text
+
+# Declare files that will always have CRLF line endings on checkout
+*.bat text eol=crlf
+
+# Denote all files that are binary and should not be modified
+*.png binary
+*.jpg binary
+*.jpeg binary
+*.gif binary
+*.ico binary
+*.pdf binary
+*.phar binary
\ No newline at end of file
diff --git a/.github/workflows/static-analysis.yml b/.github/workflows/static-analysis.yml
new file mode 100644
index 0000000..9ef867f
--- /dev/null
+++ b/.github/workflows/static-analysis.yml
@@ -0,0 +1,46 @@
+name: Static Analysis
+
+on:
+  push:
+    branches: [ main, develop ]
+  pull_request:
+    branches: [ main ]
+
+jobs:
+  phpstan:
+    name: PHPStan
+    runs-on: ubuntu-latest
+    steps:
+      - name: Checkout code
+        uses: actions/checkout@v4
+
+      - name: Setup PHP
+        uses: shivammathur/setup-php@v2
+        with:
+          php-version: 8.2
+          coverage: none
+
+      - name: Install composer dependencies
+        run: composer update --prefer-stable --prefer-dist --no-interaction
+
+      - name: Run PHPStan
+        run: composer analyse
+
+  php-cs-fixer:
+    name: PHP CS Fixer
+    runs-on: ubuntu-latest
+    steps:
+      - name: Checkout code
+        uses: actions/checkout@v4
+
+      - name: Setup PHP
+        uses: shivammathur/setup-php@v2
+        with:
+          php-version: 8.2
+          coverage: none
+
+      - name: Install composer dependencies
+        run: composer update --prefer-stable --prefer-dist --no-interaction
+
+      - name: Run PHP CS Fixer
+        run: composer cs-check
\ No newline at end of file
diff --git a/.github/workflows/tests.yml b/.github/workflows/tests.yml
new file mode 100644
index 0000000..8e403cc
--- /dev/null
+++ b/.github/workflows/tests.yml
@@ -0,0 +1,44 @@
+name: Tests
+
+on:
+  push:
+    branches: [ main, develop ]
+  pull_request:
+    branches: [ main ]
+
+jobs:
+  test:
+    runs-on: ${{ matrix.os }}
+    strategy:
+      fail-fast: true
+      matrix:
+        os: [ubuntu-latest]
+        php: [8.1, 8.2, 8.3]
+        dependency-version: [prefer-lowest, prefer-stable]
+
+    name: P${{ matrix.php }} - ${{ matrix.dependency-version }} - ${{ matrix.os }}
+
+    steps:
+      - name: Checkout code
+        uses: actions/checkout@v4
+
+      - name: Setup PHP
+        uses: shivammathur/setup-php@v2
+        with:
+          php-version: ${{ matrix.php }}
+          extensions: dom, curl, libxml, mbstring, zip, pcntl, pdo, sqlite, pdo_sqlite, bcmath, soap, intl, gd, exif, iconv, imagick
+          coverage: xdebug
+
+      - name: Install dependencies
+        run: |
+          composer update --${{ matrix.dependency-version }} --prefer-dist --no-interaction
+
+      - name: Execute tests
+        run: composer test
+
+      - name: Upload coverage to Codecov
+        if: matrix.php == '8.2' && matrix.dependency-version == 'prefer-stable'
+        uses: codecov/codecov-action@v3
+        with:
+          files: ./build/logs/clover.xml
+          verbose: true
\ No newline at end of file
diff --git a/.gitignore b/.gitignore
new file mode 100644
index 0000000..cdd2461
--- /dev/null
+++ b/.gitignore
@@ -0,0 +1,50 @@
+# Composer
+/vendor/
+composer.lock
+
+# PHPUnit
+/build/
+/coverage/
+.phpunit.result.cache
+phpunit.xml
+
+# PHP CS Fixer
+.php-cs-fixer.cache
+.php_cs.cache
+
+# PHPStan
+phpstan.neon
+
+# IDE
+.idea/
+.vscode/
+*.swp
+*.swo
+*~
+.DS_Store
+
+# OS
+Thumbs.db
+
+# Environment
+.env
+.env.local
+.env.*.local
+
+# Logs
+*.log
+
+# Cache
+.cache/
+
+# Test artifacts
+/tests/tmp/
+/tests/fixtures/tmp/
+
+# Documentation build
+/docs/_build/
+
+# Node (if using any JS tools)
+node_modules/
+npm-debug.log
+yarn-error.log
\ No newline at end of file
diff --git a/.php-cs-fixer.php b/.php-cs-fixer.php
new file mode 100644
index 0000000..b7781c4
--- /dev/null
+++ b/.php-cs-fixer.php
@@ -0,0 +1,90 @@
+<?php
+
+$finder = PhpCsFixer\Finder::create()
+    ->in(__DIR__)
+    ->exclude('vendor')
+    ->exclude('build')
+    ->exclude('storage')
+    ->exclude('bootstrap/cache')
+    ->notPath('*.blade.php')
+    ->notName('*.md')
+    ->notName('*.xml')
+    ->notName('*.yml')
+    ->notName('_ide_helper.php')
+    ->notName('_ide_helper_models.php')
+    ->notName('.phpstorm.meta.php');
+
+$config = new PhpCsFixer\Config();
+
+return $config
+    ->setRules([
+        '@PSR12' => true,
+        '@PHP81Migration' => true,
+        'array_syntax' => ['syntax' => 'short'],
+        'ordered_imports' => ['sort_algorithm' => 'alpha'],
+        'no_unused_imports' => true,
+        'single_line_after_imports' => true,
+        'blank_line_after_namespace' => true,
+        'blank_line_after_opening_tag' => true,
+        'declare_strict_types' => true,
+        'single_blank_line_at_eof' => true,
+        'elseif' => true,
+        'function_declaration' => true,
+        'indentation_type' => true,
+        'line_ending' => true,
+        'lowercase_keywords' => true,
+        'method_argument_space' => [
+            'on_multiline' => 'ensure_fully_multiline',
+        ],
+        'no_closing_tag' => true,
+        'no_spaces_after_function_name' => true,
+        'no_spaces_inside_parenthesis' => true,
+        'no_trailing_whitespace' => true,
+        'no_trailing_whitespace_in_comment' => true,
+        'single_blank_line_before_namespace' => true,
+        'single_class_element_per_statement' => true,
+        'single_import_per_statement' => true,
+        'single_line_after_imports' => true,
+        'switch_case_semicolon_to_colon' => true,
+        'switch_case_space' => true,
+        'encoding' => true,
+        'full_opening_tag' => true,
+        'binary_operator_spaces' => [
+            'default' => 'single_space',
+        ],
+        'blank_line_before_statement' => [
+            'statements' => ['return'],
+        ],
+        'cast_spaces' => true,
+        'class_attributes_separation' => [
+            'elements' => [
+                'method' => 'one',
+            ],
+        ],
+        'concat_space' => [
+            'spacing' => 'one',
+        ],
+        'no_empty_statement' => true,
+        'no_leading_import_slash' => true,
+        'no_leading_namespace_whitespace' => true,
+        'no_whitespace_in_blank_line' => true,
+        'return_type_declaration' => true,
+        'short_scalar_cast' => true,
+        'single_quote' => true,
+        'ternary_operator_spaces' => true,
+        'trailing_comma_in_multiline' => ['elements' => ['arrays']],
+        'visibility_required' => true,
+        'void_return' => true,
+        'phpdoc_align' => true,
+        'phpdoc_indent' => true,
+        'phpdoc_no_empty_return' => true,
+        'phpdoc_scalar' => true,
+        'phpdoc_separation' => true,
+        'phpdoc_single_line_var_spacing' => true,
+        'phpdoc_trim' => true,
+        'phpdoc_types' => true,
+        'phpdoc_var_without_name' => true,
+    ])
+    ->setFinder($finder)
+    ->setRiskyAllowed(true)
+    ->setUsingCache(true);
\ No newline at end of file
diff --git a/CHANGELOG.md b/CHANGELOG.md
new file mode 100644
index 0000000..0b41ede
--- /dev/null
+++ b/CHANGELOG.md
@@ -0,0 +1,35 @@
+# Changelog
+
+All notable changes to this project will be documented in this file.
+
+The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/),
+and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0.html).
+
+## [Unreleased]
+
+## [1.0.0] - 2025-01-20
+
+### Added
+- Initial release of SpaceTime PHP library
+- Core streaming functionality with `SpaceTimeStream` class
+- Memory-efficient array implementation with `SpaceTimeArray`
+- External sorting algorithm for datasets larger than memory
+- External group-by algorithm for large-scale data aggregation
+- Batch processing system with checkpoint support
+- Memory pressure monitoring and automatic handling
+- Laravel integration with service provider and Eloquent support
+- Symfony bundle with console commands and DI configuration
+- File processing utilities (CSV, JSON Lines)
+- Comprehensive test suite
+- Documentation and examples
+
+### Features
+- Process files larger than available memory
+- Streaming operations: map, filter, flatMap, chunk, batch
+- Automatic memory management with configurable thresholds
+- Progress tracking and resumable operations
+- Framework integrations for Laravel and Symfony
+- Type-safe operations with PHP 8.1+ features
+
+[Unreleased]: https://github.com/sqrtspace/spacetime-php/compare/v1.0.0...HEAD
+[1.0.0]: https://github.com/sqrtspace/spacetime-php/releases/tag/v1.0.0
\ No newline at end of file
diff --git a/composer.json b/composer.json
new file mode 100644
index 0000000..00d20b3
--- /dev/null
+++ b/composer.json
@@ -0,0 +1,89 @@
+{
+    "name": "sqrtspace/spacetime",
+    "description": "High-performance PHP library for memory-efficient processing of large datasets with streaming, batching, and time/space complexity optimization",
+    "type": "library",
+    "keywords": [
+        "streaming",
+        "memory-efficient",
+        "large-datasets",
+        "batch-processing",
+        "external-sort",
+        "laravel",
+        "symfony",
+        "performance",
+        "big-data"
+    ],
+    "homepage": "https://github.com/sqrtspace/spacetime-php",
+    "license": "Apache-2.0",
+    "authors": [
+        {
+            "name": "David H. Friedel Jr.",
+            "email": "dfriedel@marketally.ai"
+        }
+    ],
+    "require": {
+        "php": ">=8.1",
+        "psr/log": "^3.0",
+        "psr/container": "^2.0",
+        "psr/simple-cache": "^3.0"
+    },
+    "require-dev": {
+        "phpunit/phpunit": "^10.0",
+        "mockery/mockery": "^1.6",
+        "phpstan/phpstan": "^1.10",
+        "friendsofphp/php-cs-fixer": "^3.40",
+        "symfony/console": "^6.0|^7.0",
+        "symfony/dependency-injection": "^6.0|^7.0",
+        "symfony/config": "^6.0|^7.0",
+        "illuminate/support": "^10.0|^11.0",
+        "illuminate/database": "^10.0|^11.0"
+    },
+    "suggest": {
+        "ext-pcntl": "For better memory monitoring and signal handling",
+        "ext-apcu": "For high-performance caching",
+        "illuminate/support": "For Laravel integration",
+        "symfony/framework-bundle": "For Symfony integration"
+    },
+    "autoload": {
+        "psr-4": {
+            "SqrtSpace\\SpaceTime\\": "src/"
+        }
+    },
+    "autoload-dev": {
+        "psr-4": {
+            "SqrtSpace\\SpaceTime\\Tests\\": "tests/"
+        }
+    },
+    "scripts": {
+        "test": "vendor/bin/phpunit",
+        "test-coverage": "vendor/bin/phpunit --coverage-html coverage",
+        "analyse": "vendor/bin/phpstan analyse",
+        "cs-check": "vendor/bin/php-cs-fixer fix --dry-run --diff",
+        "cs-fix": "vendor/bin/php-cs-fixer fix",
+        "check": [
+            "@cs-check",
+            "@analyse",
+            "@test"
+        ]
+    },
+    "config": {
+        "sort-packages": true,
+        "allow-plugins": {
+            "composer/package-versions-deprecated": true
+        }
+    },
+    "extra": {
+        "laravel": {
+            "providers": [
+                "SqrtSpace\\SpaceTime\\Laravel\\SpaceTimeServiceProvider"
+            ]
+        },
+        "symfony": {
+            "bundles": [
+                "SqrtSpace\\SpaceTime\\Symfony\\SpaceTimeBundle"
+            ]
+        }
+    },
+    "minimum-stability": "stable",
+    "prefer-stable": true
+}
\ No newline at end of file
diff --git a/phpstan.neon.dist b/phpstan.neon.dist
new file mode 100644
index 0000000..942f0b1
--- /dev/null
+++ b/phpstan.neon.dist
@@ -0,0 +1,24 @@
+parameters:
+    level: 8
+    paths:
+        - src
+        - tests
+    excludePaths:
+        - tests/fixtures/*
+    treatPhpDocTypesAsCertain: false
+    checkMissingIterableValueType: false
+    checkGenericClassInNonGenericObjectType: false
+    reportUnmatchedIgnoredErrors: true
+    ignoreErrors:
+        # Allow using superglobals for framework integrations
+        - '#Accessing superglobal#'
+        # Allow dynamic properties in tests
+        -
+            message: '#Access to an undefined property#'
+            path: tests/*
+    parallel:
+        jobSize: 20
+        maximumNumberOfProcesses: 4
+    cache:
+        nodesByFileCountMax: 512
+        nodesByStringCountMax: 512
\ No newline at end of file
diff --git a/phpunit.xml.dist b/phpunit.xml.dist
new file mode 100644
index 0000000..dfde436
--- /dev/null
+++ b/phpunit.xml.dist
@@ -0,0 +1,46 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<phpunit xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
+         xsi:noNamespaceSchemaLocation="vendor/phpunit/phpunit/phpunit.xsd"
+         bootstrap="vendor/autoload.php"
+         colors="true"
+         executionOrder="depends,defects"
+         beStrictAboutOutputDuringTests="true"
+         beStrictAboutTodoAnnotatedTests="true"
+         convertDeprecationsToExceptions="true"
+         failOnRisky="true"
+         failOnWarning="true"
+         verbose="true">
+    <testsuites>
+        <testsuite name="SpaceTime Test Suite">
+            <directory>tests</directory>
+        </testsuite>
+    </testsuites>
+
+    <coverage includeUncoveredFiles="true"
+              pathCoverage="false"
+              ignoreDeprecatedCodeUnits="true"
+              disableCodeCoverageIgnore="true">
+        <include>
+            <directory suffix=".php">src</directory>
+        </include>
+        <exclude>
+            <directory>src/Laravel</directory>
+            <directory>src/Symfony</directory>
+        </exclude>
+        <report>
+            <html outputDirectory="build/coverage"/>
+            <text outputFile="build/coverage.txt"/>
+            <clover outputFile="build/logs/clover.xml"/>
+        </report>
+    </coverage>
+
+    <logging>
+        <junit outputFile="build/report.junit.xml"/>
+    </logging>
+
+    <php>
+        <ini name="memory_limit" value="-1"/>
+        <ini name="error_reporting" value="-1"/>
+        <env name="SPACETIME_TEST_MODE" value="true"/>
+    </php>
+</phpunit>
\ No newline at end of file