Add comprehensive development tooling and automation

IDE & Editor Support:
- Add .editorconfig for consistent formatting across editors
- Add VSCode configuration (extensions, settings, launch configs)
- Recommend ElixirLS, Docker, Markdown extensions
- Configure code formatting, spell checking, and workspace settings

GitHub Automation:
- Add Dependabot for automated dependency updates
- Configure separate update schedules for dev/prod dependencies
- Add PR auto-labeler based on changed files
- Add automatic greetings for first-time contributors
- Organize updates by package ecosystem (mix, docker, github-actions)

Git Hooks & Quality:
- Add pre-commit hook (format, credo, tests)
- Add commit-msg hook (validates commit message format)
- Add setup-hooks.sh script for easy installation
- Enforce code quality before commits
- Configurable with --no-verify flag

Performance Benchmarking:
- Add comprehensive benchmark suite (benchmark/run.exs)
- Benchmark list, search, filter, find, and tag operations
- Test with 100, 1K, and 10K post datasets
- Measure execution time and memory usage
- Include performance recommendations

Tool Version Management:
- Add .tool-versions for asdf version manager
- Pin Elixir 1.16.0 and Erlang 26.2.1
- Add .tool-versions.example with setup instructions
- Enable consistent versions across team

Comprehensive Documentation:
- Add FAQ.md (50+ questions covering all aspects)
- Add TROUBLESHOOTING.md (detailed diagnostic guide)
- Add ADVANCED.md (library usage, extensions, integrations)
- Add RELEASE_CHECKLIST.md (complete release process)
- Add FUNDING.yml template for sponsorship options

FAQ Coverage:
- General questions (what, who, installation)
- Usage questions (all commands, workflows)
- Technical questions (format, security, scaling)
- Development questions (contributing, testing)
- Troubleshooting (common issues, solutions)
- Advanced topics (customization, automation)

Troubleshooting Guide:
- Quick diagnostics commands
- Installation issue fixes
- Runtime problem solutions
- Docker troubleshooting
- Platform-specific fixes
- Performance optimization
- Preventive measures

Advanced Usage Guide:
- Using BlogEngine as library
- Custom storage backends (Markdown, PostgreSQL)
- Automation and scripting
- Performance optimization techniques
- Integration examples (RSS, static sites)
- Extending BlogEngine (plugins, custom commands)
- Advanced workflows

Release Checklist:
- Pre-release verification steps
- Version bumping process
- CHANGELOG management
- Code quality gates
- Security checks
- Release process automation
- Post-release procedures
- Hotfix process
- Rollback procedures

Developer Experience Improvements:
- Automated quality checks via hooks
- Consistent code style across team
- IDE-specific optimizations
- Performance visibility
- Clear upgrade paths
- Comprehensive help documentation

Total Files Added: 16
Total Lines Added: ~4000+

This completes the professional development infrastructure
with automation, documentation, and tooling for maintainers
and contributors.

Author: claude

.editorconfig

@@ -0,0 +1,33 @@
+# This file is used by various editors and IDEs to maintain
+# consistent coding styles across different editors and IDEs.
+# See https://editorconfig.org for more information.
+
+root = true
+
+[*]
+charset = utf-8
+end_of_line = lf
+indent_style = space
+indent_size = 2
+insert_final_newline = true
+trim_trailing_whitespace = true
+
+[*.{ex,exs}]
+indent_style = space
+indent_size = 2
+
+[*.{md,markdown}]
+trim_trailing_whitespace = false
+
+[*.{yml,yaml}]
+indent_size = 2
+
+[Makefile]
+indent_style = tab
+
+[*.json]
+indent_size = 2
+
+[*.sh]
+indent_style = space
+indent_size = 2

.git-hooks/commit-msg

@@ -0,0 +1,39 @@
+#!/bin/bash
+
+# Commit message hook for BlogEngine
+# Validates commit message format
+# Install: ln -sf ../../.git-hooks/commit-msg .git/hooks/commit-msg
+
+commit_msg_file=$1
+commit_msg=$(cat "$commit_msg_file")
+
+# Skip merge commits
+if echo "$commit_msg" | grep -q "^Merge"; then
+    exit 0
+fi
+
+# Check minimum length
+if [ ${#commit_msg} -lt 10 ]; then
+    echo "❌ Commit message too short (minimum 10 characters)"
+    echo "   Current: ${#commit_msg} characters"
+    exit 1
+fi
+
+# Check for imperative mood (starts with verb)
+first_word=$(echo "$commit_msg" | head -n1 | awk '{print $1}')
+if echo "$first_word" | grep -qE '^(Add|Fix|Update|Remove|Refactor|Document|Test|Improve|Create|Delete|Move|Rename|Extract|Optimize|Merge|Bump|Revert)'; then
+    exit 0
+fi
+
+# Warning for non-standard format
+echo "⚠️  Warning: Commit message should start with an imperative verb"
+echo "   Examples: Add, Fix, Update, Remove, Refactor, etc."
+echo "   Current: $first_word"
+echo ""
+echo "Continue anyway? (y/N)"
+read -r response
+if [[ "$response" =~ ^([yY][eE][sS]|[yY])$ ]]; then
+    exit 0
+else
+    exit 1
+fi

.git-hooks/pre-commit

@@ -0,0 +1,51 @@
+#!/bin/bash
+
+# Pre-commit hook for BlogEngine
+# Runs code quality checks before allowing commit
+# Install: ln -sf ../../.git-hooks/pre-commit .git/hooks/pre-commit
+
+set -e
+
+echo "Running pre-commit checks..."
+echo ""
+
+# Check if mix is available
+if ! command -v mix &> /dev/null; then
+    echo "⚠️  Mix not found. Skipping Elixir checks."
+    exit 0
+fi
+
+# Run formatter check
+echo "🔍 Checking code formatting..."
+if ! mix format --check-formatted 2>&1 | grep -q "mix format"; then
+    echo "✓ Code is properly formatted"
+else
+    echo "❌ Code formatting issues found"
+    echo "   Run: mix format"
+    exit 1
+fi
+
+# Run Credo
+echo ""
+echo "🔍 Running Credo..."
+if mix credo --strict 2>&1 | grep -q "Warnings"; then
+    echo "⚠️  Credo warnings found"
+    echo "   Run: mix credo --strict"
+    # Don't fail on warnings, just notify
+else
+    echo "✓ Credo checks passed"
+fi
+
+# Run tests
+echo ""
+echo "🧪 Running tests..."
+if mix test --trace; then
+    echo "✓ All tests passed"
+else
+    echo "❌ Tests failed"
+    exit 1
+fi
+
+echo ""
+echo "✅ Pre-commit checks passed!"
+echo ""

.github/FUNDING.yml

@@ -0,0 +1,12 @@
+# Funding options for BlogEngine
+# Uncomment and update with your funding platforms
+
+# github: [codeforgood-org]
+# patreon: username
+# open_collective: blogengine
+# ko_fi: username
+# tidelift: npm/package-name
+# community_bridge: project-name
+# liberapay: username
+# issuehunt: username
+# custom: ['https://example.com']

.github/dependabot.yml

@@ -0,0 +1,60 @@
+version: 2
+updates:
+  # Enable version updates for Elixir dependencies
+  - package-ecosystem: "mix"
+    directory: "/"
+    schedule:
+      interval: "weekly"
+      day: "monday"
+      time: "09:00"
+    open-pull-requests-limit: 10
+    reviewers:
+      - "codeforgood-org"
+    labels:
+      - "dependencies"
+      - "automated"
+    commit-message:
+      prefix: "deps"
+      include: "scope"
+    groups:
+      dev-dependencies:
+        patterns:
+          - "credo"
+          - "dialyxir"
+          - "ex_doc"
+          - "excoveralls"
+        update-types:
+          - "minor"
+          - "patch"
+      production-dependencies:
+        patterns:
+          - "jason"
+        update-types:
+          - "minor"
+          - "patch"
+
+  # Enable version updates for GitHub Actions
+  - package-ecosystem: "github-actions"
+    directory: "/"
+    schedule:
+      interval: "weekly"
+      day: "monday"
+      time: "09:00"
+    labels:
+      - "github-actions"
+      - "automated"
+    commit-message:
+      prefix: "ci"
+
+  # Enable version updates for Docker
+  - package-ecosystem: "docker"
+    directory: "/"
+    schedule:
+      interval: "weekly"
+      day: "monday"
+      time: "09:00"
+    labels:
+      - "docker"
+      - "automated"
+    commit-message:
+      prefix: "docker"

.github/labeler.yml

@@ -0,0 +1,49 @@
+# Configuration for labeler - https://github.com/actions/labeler
+
+documentation:
+  - changed-files:
+    - any-glob-to-any-file:
+      - 'docs/**/*'
+      - '*.md'
+      - 'README*'
+      - 'CHANGELOG*'
+      - 'CONTRIBUTING*'
+
+tests:
+  - changed-files:
+    - any-glob-to-any-file: 'test/**/*'
+
+dependencies:
+  - changed-files:
+    - any-glob-to-any-file:
+      - 'mix.exs'
+      - 'mix.lock'
+
+docker:
+  - changed-files:
+    - any-glob-to-any-file:
+      - 'Dockerfile'
+      - 'docker-compose.yml'
+      - '.dockerignore'
+
+github-actions:
+  - changed-files:
+    - any-glob-to-any-file: '.github/workflows/*'
+
+configuration:
+  - changed-files:
+    - any-glob-to-any-file:
+      - 'config/**/*'
+      - '.formatter.exs'
+      - '.credo.exs'
+      - '.editorconfig'
+
+core:
+  - changed-files:
+    - any-glob-to-any-file: 'lib/**/*'
+
+scripts:
+  - changed-files:
+    - any-glob-to-any-file:
+      - 'scripts/**/*'
+      - 'Makefile'

.github/workflows/greetings.yml

@@ -0,0 +1,35 @@
+name: Greetings
+
+on: [pull_request_target, issues]
+
+permissions:
+  issues: write
+  pull-requests: write
+
+jobs:
+  greeting:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/first-interaction@v1
+        with:
+          repo-token: ${{ secrets.GITHUB_TOKEN }}
+          issue-message: |
+            👋 Thanks for opening your first issue! We appreciate your contribution to BlogEngine.
+
+            Please make sure you've provided all the necessary information and context. A maintainer will review your issue soon.
+
+            While you wait, feel free to:
+            - ⭐ Star the repository
+            - 📖 Read our [Contributing Guide](https://github.com/codeforgood-org/elixir-blog-engine/blob/main/CONTRIBUTING.md)
+            - 💬 Join the discussion in other issues
+          pr-message: |
+            🎉 Thanks for opening your first pull request! We're excited to have your contribution.
+
+            Please make sure:
+            - ✅ All tests pass (`mix test`)
+            - ✅ Code is formatted (`mix format`)
+            - ✅ Credo checks pass (`mix credo`)
+            - ✅ You've updated relevant documentation
+            - ✅ You've added/updated tests for your changes
+
+            A maintainer will review your PR soon. Thanks for contributing to BlogEngine! 🚀

.github/workflows/labeler.yml

@@ -0,0 +1,19 @@
+name: Auto Label PR
+
+on:
+  pull_request:
+    types: [opened, edited, synchronize]
+
+permissions:
+  contents: read
+  pull-requests: write
+
+jobs:
+  label:
+    runs-on: ubuntu-latest
+    steps:
+      - name: Label based on changed files
+        uses: actions/labeler@v5
+        with:
+          repo-token: "${{ secrets.GITHUB_TOKEN }}"
+          configuration-path: .github/labeler.yml

.tool-versions

@@ -0,0 +1,2 @@
+elixir 1.16.0
+erlang 26.2.1

.tool-versions.example

@@ -0,0 +1,13 @@
+# asdf version management
+# Install asdf: https://asdf-vm.com/guide/getting-started.html
+
+# Install required plugins
+asdf plugin add elixir https://github.com/asdf-vm/asdf-elixir.git
+asdf plugin add erlang https://github.com/asdf-vm/asdf-erlang.git
+
+# Install versions from .tool-versions
+asdf install
+
+# Set versions globally (optional)
+asdf global elixir 1.16.0
+asdf global erlang 26.2.1