Refactor: Clean up obsolete files and organize codebase structure

This commit removes deprecated modules and reorganizes code into logical directories:

Deleted files (superseded by newer systems):
- claude_code_server.py (replaced by agent-sdk direct integration)
- heartbeat.py (superseded by scheduled_tasks.py)
- pulse_brain.py (unused in production)
- config/pulse_brain_config.py (obsolete config)

Created directory structure:
- examples/ (7 example files: example_*.py, demo_*.py)
- tests/ (5 test files: test_*.py)

Updated imports:
- agent.py: Removed heartbeat module and all enable_heartbeat logic
- bot_runner.py: Removed heartbeat parameter from Agent initialization
- llm_interface.py: Updated deprecated claude_code_server message

Preserved essential files:
- hooks.py (for future use)
- adapters/skill_integration.py (for future use)
- All Google integration tools (Gmail, Calendar, Contacts)
- GLM provider code (backward compatibility)

Co-Authored-By: Claude Sonnet 4.5 <noreply@anthropic.com>

pyproject.toml

@@ -0,0 +1,137 @@
+[build-system]
+requires = ["setuptools>=68.0", "wheel"]
+build-backend = "setuptools.build_meta"
+
+[project]
+name = "ajarbot"
+version = "0.2.0"
+description = "Multi-platform AI agent powered by Claude with memory, tools, and scheduling"
+readme = "README.md"
+requires-python = ">=3.10"
+license = {text = "MIT"}
+authors = [
+    {name = "Ajarbot Team"}
+]
+keywords = ["ai", "agent", "claude", "slack", "telegram", "chatbot", "assistant"]
+classifiers = [
+    "Development Status :: 4 - Beta",
+    "Intended Audience :: Developers",
+    "License :: OSI Approved :: MIT License",
+    "Programming Language :: Python :: 3",
+    "Programming Language :: Python :: 3.10",
+    "Programming Language :: Python :: 3.11",
+    "Programming Language :: Python :: 3.12",
+    "Operating System :: OS Independent",
+    "Topic :: Communications :: Chat",
+    "Topic :: Scientific/Engineering :: Artificial Intelligence",
+]
+
+# Core dependencies (always installed)
+dependencies = [
+    "watchdog>=3.0.0",
+    "anthropic>=0.40.0",
+    "requests>=2.31.0",
+    "fastembed>=0.7.0",
+    "usearch>=2.23.0",
+    "numpy>=2.0.0",
+    "pyyaml>=6.0.1",
+    "python-dotenv>=1.0.0",
+]
+
+[project.optional-dependencies]
+# Slack adapter dependencies
+slack = [
+    "slack-bolt>=1.18.0",
+    "slack-sdk>=3.23.0",
+]
+
+# Telegram adapter dependencies
+telegram = [
+    "python-telegram-bot>=20.7",
+]
+
+# Google integration (Gmail + Calendar)
+google = [
+    "google-auth>=2.23.0",
+    "google-auth-oauthlib>=1.1.0",
+    "google-auth-httplib2>=0.1.1",
+    "google-api-python-client>=2.108.0",
+]
+
+# Agent SDK mode (uses Claude Pro subscription)
+agent-sdk = [
+    "claude-code-sdk>=0.1.0",
+    "fastapi>=0.109.0",
+    "uvicorn>=0.27.0",
+]
+
+# All optional dependencies
+all = [
+    "slack-bolt>=1.18.0",
+    "slack-sdk>=3.23.0",
+    "python-telegram-bot>=20.7",
+    "google-auth>=2.23.0",
+    "google-auth-oauthlib>=1.1.0",
+    "google-auth-httplib2>=0.1.1",
+    "google-api-python-client>=2.108.0",
+    "claude-code-sdk>=0.1.0",
+    "fastapi>=0.109.0",
+    "uvicorn>=0.27.0",
+]
+
+# Development dependencies
+dev = [
+    "pytest>=7.4.0",
+    "black>=23.0.0",
+    "ruff>=0.1.0",
+    "mypy>=1.5.0",
+]
+
+[project.urls]
+Homepage = "https://github.com/yourusername/ajarbot"
+Documentation = "https://github.com/yourusername/ajarbot#readme"
+Repository = "https://github.com/yourusername/ajarbot"
+Issues = "https://github.com/yourusername/ajarbot/issues"
+
+[project.scripts]
+# Main entry point - runs ajarbot.py
+ajarbot = "ajarbot:main"
+
+[tool.setuptools]
+# Auto-discover packages
+packages = ["config", "adapters", "adapters.slack", "adapters.telegram", "google_tools"]
+
+[tool.setuptools.package-data]
+# Include YAML config templates
+config = ["*.yaml"]
+
+[tool.black]
+line-length = 88
+target-version = ["py310", "py311", "py312"]
+
+[tool.ruff]
+line-length = 88
+target-version = "py310"
+select = [
+    "E",  # pycodestyle errors
+    "W",  # pycodestyle warnings
+    "F",  # pyflakes
+    "I",  # isort
+    "B",  # flake8-bugbear
+    "C4", # flake8-comprehensions
+]
+ignore = [
+    "E501", # line too long (handled by black)
+    "B008", # do not perform function calls in argument defaults
+]
+
+[tool.mypy]
+python_version = "3.10"
+warn_return_any = true
+warn_unused_configs = true
+disallow_untyped_defs = false
+disallow_incomplete_defs = false
+check_untyped_defs = true
+no_implicit_optional = true
+warn_redundant_casts = true
+warn_unused_ignores = true