Add comprehensive admin features and multi-system integration

- Add admin dashboard with sync controls and data browser
- Implement RMM, Auvik, and Addigy organization mappings
- Add chunked ticket sync with progress tracking
- Implement entity sync service with rate limiting
- Add analytics engine and performance optimizer
- Create data browser for all PSA entities
- Add navigation components and UI improvements
- Implement background processing and sync services
- Add comprehensive documentation and migration scripts
- Update configuration items with multi-system support
- Enhance contact management and purchase history
- Add issue type assignment and LLM analyzer
- Improve error handling and logging utilities

migrations/011_create_addigy_org_mappings.sql

@@ -0,0 +1,28 @@
+-- Create table for Addigy organization to Autotask company mappings
+CREATE TABLE IF NOT EXISTS addigy_org_mappings (
+    id SERIAL PRIMARY KEY,
+    addigy_org_id VARCHAR(255) NOT NULL UNIQUE,
+    addigy_org_name VARCHAR(255) NOT NULL,
+    autotask_company_id INTEGER NOT NULL,
+    autotask_company_name VARCHAR(255) NOT NULL,
+    created_at TIMESTAMP WITH TIME ZONE DEFAULT CURRENT_TIMESTAMP,
+    updated_at TIMESTAMP WITH TIME ZONE DEFAULT CURRENT_TIMESTAMP
+);
+
+-- Create index for faster lookups
+CREATE INDEX IF NOT EXISTS idx_addigy_org_id ON addigy_org_mappings(addigy_org_id);
+CREATE INDEX IF NOT EXISTS idx_addigy_autotask_company_id ON addigy_org_mappings(autotask_company_id);
+
+-- Add updated_at trigger
+CREATE OR REPLACE FUNCTION update_addigy_org_mappings_updated_at()
+RETURNS TRIGGER AS $$
+BEGIN
+    NEW.updated_at = CURRENT_TIMESTAMP;
+    RETURN NEW;
+END;
+$$ LANGUAGE plpgsql;
+
+CREATE TRIGGER addigy_org_mappings_updated_at
+    BEFORE UPDATE ON addigy_org_mappings
+    FOR EACH ROW
+    EXECUTE FUNCTION update_addigy_org_mappings_updated_at();