re-uploading work

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+# Core Pack Setup Implementation Summary
+
+**Date:** 2025-01-20  
+**Task:** Core Pack Setup - Loader Script & Documentation  
+**Status:** ✅ Complete
+
+## Overview
+
+Created a comprehensive system for loading the Attune core pack from the filesystem into the database. This enables the built-in system pack to be properly initialized with all its actions, triggers, and sensors.
+
+## What Was Built
+
+### 1. Python Loader Script (`scripts/load_core_pack.py`)
+
+**Purpose:** Parse YAML pack definitions and load them into the database
+
+**Features:**
+- Reads `pack.yaml` for pack metadata
+- Loads triggers from `triggers/*.yaml`
+- Loads actions from `actions/*.yaml`
+- Loads sensors from `sensors/*.yaml`
+- Creates runtime entries for actions and sensors
+- Idempotent operations (can be run multiple times safely)
+- Transaction-based (all-or-nothing)
+- Command-line arguments for flexibility
+- Comprehensive error handling and reporting
+
+**Usage:**
+```bash
+# Basic usage
+python3 scripts/load_core_pack.py
+
+# With custom database URL
+python3 scripts/load_core_pack.py --database-url "postgresql://..."
+
+# With custom pack directory
+python3 scripts/load_core_pack.py --pack-dir ./packs
+```
+
+**Key Functions:**
+- `upsert_pack()` - Create/update pack metadata
+- `upsert_triggers()` - Load all trigger definitions
+- `upsert_actions()` - Load all action definitions
+- `upsert_sensors()` - Load all sensor definitions
+- `ensure_shell_runtime()` - Create shell runtime for actions
+- `ensure_sensor_runtime()` - Create built-in sensor runtime
+
+**Database Operations:**
+- Uses `ON CONFLICT ... DO UPDATE` for upserts
+- Maintains referential integrity (pack → triggers/actions → sensors)
+- Returns IDs for cross-referencing
+- Proper transaction handling with rollback on error
+
+### 2. Shell Wrapper Script (`scripts/load-core-pack.sh`)
+
+**Purpose:** User-friendly wrapper with prerequisite checking
+
+**Features:**
+- Prerequisites validation (Python, packages, database)
+- Interactive package installation
+- Database connectivity testing
+- Colored output for better UX
+- Help documentation
+- Environment variable support
+- Verbose mode for debugging
+
+**Checks Performed:**
+1. ✓ Python 3 is installed
+2. ✓ Required Python packages (psycopg2-binary, pyyaml)
+3. ✓ Database is accessible
+4. ✓ Core pack directory exists
+5. ✓ pack.yaml file is present
+
+**Usage:**
+```bash
+# Basic usage
+./scripts/load-core-pack.sh
+
+# With options
+./scripts/load-core-pack.sh --database-url "postgresql://..." --verbose
+
+# Dry run
+./scripts/load-core-pack.sh --dry-run
+```
+
+### 3. Comprehensive Documentation
+
+#### `packs/core/SETUP.md` (305 lines)
+
+Complete setup guide including:
+- **Overview** - What the core pack provides
+- **Prerequisites** - Requirements before loading
+- **Loading Methods** - 3 different approaches:
+  1. Python loader script (recommended)
+  2. SQL seed script
+  3. CLI (future)
+- **Verification** - How to confirm successful loading
+- **Testing** - Testing the loaded pack
+- **Updating** - Re-running after changes
+- **Troubleshooting** - Common issues and solutions
+- **Development Workflow** - Adding new components
+- **Environment Variables** - Configuration options
+- **CI/CD Integration** - Automated deployment examples
+
+#### Updated `README.md`
+
+Added new section "3. Load the Core Pack":
+- Quick start instructions
+- Verification commands
+- Link to detailed setup guide
+- Renumbered subsequent sections
+
+### 4. Existing Assets
+
+**Already Present:**
+- ✅ `packs/core/pack.yaml` - Pack metadata
+- ✅ `packs/core/actions/*.yaml` - Action definitions (echo, sleep, noop, http_request)
+- ✅ `packs/core/actions/*.sh` - Shell action implementations
+- ✅ `packs/core/actions/*.py` - Python action implementations
+- ✅ `packs/core/triggers/*.yaml` - Trigger definitions (intervaltimer, crontimer, datetimetimer)
+- ✅ `packs/core/sensors/*.yaml` - Sensor definitions
+- ✅ `packs/core/sensors/*.py` - Sensor implementations
+- ✅ `packs/core/README.md` - Component documentation
+- ✅ `packs/core/TESTING.md` - Testing procedures
+- ✅ `packs/core/test_core_pack.sh` - Test suite
+- ✅ `scripts/seed_core_pack.sql` - SQL seed script (legacy)
+
+## Core Pack Contents
+
+### Pack Metadata
+- **Ref:** `core`
+- **Version:** `1.0.0`
+- **Type:** System pack (built-in)
+
+### Triggers (3)
+1. `core.intervaltimer` - Regular interval-based timer
+2. `core.crontimer` - Cron schedule-based timer
+3. `core.datetimetimer` - One-shot datetime timer
+
+### Actions (4)
+1. `core.echo` - Echo message to stdout
+2. `core.sleep` - Sleep for N seconds
+3. `core.noop` - No operation (testing)
+4. `core.http_request` - Make HTTP requests
+
+### Sensors (1)
+1. `core.interval_timer_sensor` - Built-in interval timer sensor
+
+## Technical Details
+
+### Database Schema Usage
+
+**Tables Populated:**
+- `attune.pack` - Core pack entry
+- `attune.runtime` - Shell and sensor runtimes
+- `attune.trigger` - Trigger type definitions
+- `attune.action` - Action definitions
+- `attune.sensor` - Sensor instances
+
+**Key Features:**
+- UPSERT operations for idempotency
+- Proper foreign key relationships
+- JSON schema storage for parameters/output
+- Runtime type discrimination (action vs sensor)
+
+### Python Dependencies
+
+Required packages:
+- `psycopg2-binary` - PostgreSQL database adapter
+- `pyyaml` - YAML parsing
+
+### Environment Variables
+
+- `DATABASE_URL` - PostgreSQL connection string
+  - Default: `postgresql://postgres:postgres@localhost:5432/attune`
+  
+- `ATTUNE_PACKS_DIR` - Base directory for packs
+  - Default: `./packs`
+
+## Usage Workflow
+
+### First-Time Setup
+```bash
+# 1. Ensure database is running and migrations applied
+createdb attune
+sqlx migrate run
+
+# 2. Install Python dependencies
+pip install psycopg2-binary pyyaml
+
+# 3. Load core pack
+./scripts/load-core-pack.sh
+
+# 4. Verify
+attune pack show core
+```
+
+### Development Workflow
+```bash
+# 1. Edit pack files (actions, triggers, sensors)
+vim packs/core/actions/new_action.yaml
+vim packs/core/actions/new_action.sh
+
+# 2. Make scripts executable
+chmod +x packs/core/actions/new_action.sh
+
+# 3. Test locally
+export ATTUNE_ACTION_FOO="bar"
+./packs/core/actions/new_action.sh
+
+# 4. Reload into database
+./scripts/load-core-pack.sh
+
+# 5. Restart services
+# API, executor, worker, sensor services
+```
+
+### Updating Existing Components
+```bash
+# 1. Modify YAML definitions
+vim packs/core/actions/echo.yaml
+
+# 2. Re-run loader (upsert mode)
+./scripts/load-core-pack.sh
+
+# 3. Changes take effect immediately for new executions
+```
+
+## Testing
+
+### Loader Script Testing
+```bash
+# Syntax check
+python3 -m py_compile scripts/load_core_pack.py
+
+# Dry run
+python3 scripts/load_core_pack.py --dry-run
+
+# Actual load
+python3 scripts/load_core_pack.py
+```
+
+### Verification Queries
+```sql
+-- Check pack exists
+SELECT * FROM attune.pack WHERE ref = 'core';
+
+-- Count components
+SELECT 
+    (SELECT COUNT(*) FROM attune.trigger WHERE pack_ref = 'core') as triggers,
+    (SELECT COUNT(*) FROM attune.action WHERE pack_ref = 'core') as actions,
+    (SELECT COUNT(*) FROM attune.sensor WHERE pack_ref = 'core') as sensors;
+
+-- List all core components
+SELECT ref, label FROM attune.trigger WHERE pack_ref = 'core';
+SELECT ref, label FROM attune.action WHERE pack_ref = 'core';
+SELECT ref, label FROM attune.sensor WHERE pack_ref = 'core';
+```
+
+### End-to-End Test
+```bash
+# 1. Load pack
+./scripts/load-core-pack.sh
+
+# 2. Create a test rule
+attune rule create \
+  --name "test_timer" \
+  --trigger "core.intervaltimer" \
+  --trigger-config '{"unit":"seconds","interval":10}' \
+  --action "core.echo" \
+  --action-params '{"message":"Hello!"}' \
+  --enabled
+
+# 3. Monitor executions
+attune execution list --limit 5
+```
+
+## Files Created
+
+- ✅ `scripts/load_core_pack.py` (478 lines)
+- ✅ `scripts/load-core-pack.sh` (231 lines)
+- ✅ `packs/core/SETUP.md` (305 lines)
+- ✅ `work-summary/core-pack-setup-summary.md` (this file)
+
+## Files Modified
+
+- ✅ `README.md` - Added "Load the Core Pack" section
+
+## Benefits
+
+### For Users
+- **Simple Setup** - One command to load entire pack
+- **Clear Documentation** - Step-by-step guides
+- **Error Messages** - Helpful troubleshooting info
+- **Verification Tools** - Easy to confirm success
+
+### For Developers
+- **Flexible Loading** - Multiple methods available
+- **Idempotent** - Safe to run multiple times
+- **Version Control** - YAML definitions in git
+- **Easy Updates** - Change YAML and reload
+- **Extensible** - Easy to add new components
+
+### For Operations
+- **Automated** - Script-based for CI/CD
+- **Transactional** - All-or-nothing updates
+- **Logged** - Clear output for debugging
+- **Configurable** - Environment variable support
+
+## Future Enhancements
+
+### Short Term
+- [ ] Add `--force` flag to delete and recreate
+- [ ] Add validation mode (check YAML without loading)
+- [ ] Generate migration SQL from YAML changes
+- [ ] Support loading multiple packs at once
+
+### Medium Term
+- [ ] CLI integration: `attune pack load ./packs/core`
+- [ ] Pack versioning and upgrades
+- [ ] Dependency resolution between packs
+- [ ] Pack marketplace/registry support
+
+### Long Term
+- [ ] Hot-reload without service restart
+- [ ] Pack development mode with file watching
+- [ ] Pack testing framework
+- [ ] Pack distribution as archives
+
+## Integration Points
+
+### Services That Use Core Pack
+
+1. **Sensor Service** - Runs interval timer sensor
+2. **Worker Service** - Executes core actions
+3. **Executor Service** - Schedules core action executions
+4. **API Service** - Serves core pack metadata
+
+### Other Packs Can Depend On Core
+
+Example in `custom-pack/pack.yaml`:
+```yaml
+runtime_deps:
+  - core
+```
+
+## Success Criteria
+
+- ✅ Core pack can be loaded with one command
+- ✅ All components (triggers, actions, sensors) are created
+- ✅ Idempotent operation (safe to re-run)
+- ✅ Clear error messages on failure
+- ✅ Comprehensive documentation
+- ✅ Verification commands work
+- ✅ Compatible with existing pack structure
+
+## Next Steps
+
+After loading the core pack:
+
+1. **Start Services** - Run executor, worker, sensor services
+2. **Create Rules** - Use core triggers and actions
+3. **Test Automation** - Verify timer triggers fire
+4. **Build Custom Packs** - Create domain-specific automation
+5. **Monitor Executions** - Observe core actions running
+
+## Related Documentation
+
+- `packs/core/README.md` - Component reference
+- `packs/core/SETUP.md` - Detailed setup guide
+- `packs/core/TESTING.md` - Testing procedures
+- `docs/pack-development.md` - Creating custom packs
+- `docs/api-packs.md` - Pack management API
+
+---
+
+**Core Pack Setup Status: ✅ COMPLETE AND PRODUCTION-READY**
+
+The core pack can now be easily loaded into any Attune installation with comprehensive documentation and tooling support.