Add Groq as AI provider + new inline AI tasks, extend database to support more prompt types

inventory-server/migrations/002_ai_prompts_extensible_types.sql

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+-- Migration: Make AI prompts extensible with is_singleton column
+-- Date: 2024-01-19
+-- Description: Removes hardcoded prompt_type CHECK constraint, adds is_singleton column
+--              for dynamic uniqueness enforcement, and creates appropriate indexes.
+
+-- 1. Drop the old CHECK constraints on prompt_type (allows any string value now)
+ALTER TABLE ai_prompts DROP CONSTRAINT IF EXISTS ai_prompts_prompt_type_check;
+ALTER TABLE ai_prompts DROP CONSTRAINT IF EXISTS company_required_for_specific;
+
+-- 2. Add is_singleton column (defaults to true for backwards compatibility)
+ALTER TABLE ai_prompts ADD COLUMN IF NOT EXISTS is_singleton BOOLEAN NOT NULL DEFAULT true;
+
+-- 3. Drop ALL old unique constraints and indexes (cleanup)
+-- Some were created as CONSTRAINTS (via ADD CONSTRAINT), others as standalone indexes
+-- Must drop constraints first, then remaining standalone indexes
+
+-- Drop constraints (these also remove their backing indexes)
+ALTER TABLE ai_prompts DROP CONSTRAINT IF EXISTS unique_company_prompt;
+ALTER TABLE ai_prompts DROP CONSTRAINT IF EXISTS idx_unique_general_prompt;
+ALTER TABLE ai_prompts DROP CONSTRAINT IF EXISTS idx_unique_system_prompt;
+
+-- Drop standalone indexes (IF EXISTS handles cases where they don't exist)
+DROP INDEX IF EXISTS idx_unique_general_prompt;
+DROP INDEX IF EXISTS idx_unique_system_prompt;
+DROP INDEX IF EXISTS idx_unique_name_validation_system;
+DROP INDEX IF EXISTS idx_unique_name_validation_general;
+DROP INDEX IF EXISTS idx_unique_description_validation_system;
+DROP INDEX IF EXISTS idx_unique_description_validation_general;
+DROP INDEX IF EXISTS idx_unique_sanity_check_system;
+DROP INDEX IF EXISTS idx_unique_sanity_check_general;
+DROP INDEX IF EXISTS idx_unique_bulk_validation_system;
+DROP INDEX IF EXISTS idx_unique_bulk_validation_general;
+DROP INDEX IF EXISTS idx_unique_name_validation_company;
+DROP INDEX IF EXISTS idx_unique_description_validation_company;
+DROP INDEX IF EXISTS idx_unique_bulk_validation_company;
+
+-- 4. Create new partial unique indexes based on is_singleton
+-- For singleton types WITHOUT company (only one per prompt_type)
+CREATE UNIQUE INDEX IF NOT EXISTS idx_singleton_no_company
+  ON ai_prompts (prompt_type)
+  WHERE is_singleton = true AND company IS NULL;
+
+-- For singleton types WITH company (only one per prompt_type + company combination)
+CREATE UNIQUE INDEX IF NOT EXISTS idx_singleton_with_company
+  ON ai_prompts (prompt_type, company)
+  WHERE is_singleton = true AND company IS NOT NULL;
+
+-- 5. Add index for fast lookups by type
+CREATE INDEX IF NOT EXISTS idx_prompt_type ON ai_prompts (prompt_type);
+
+-- NOTE: After running this migration, you should:
+-- 1. Delete existing prompts with old types (general, system, company_specific)
+-- 2. Create new prompts with the new type naming convention:
+--    - name_validation_system, name_validation_general, name_validation_company_specific
+--    - description_validation_system, description_validation_general, description_validation_company_specific
+--    - sanity_check_system, sanity_check_general
+--    - bulk_validation_system, bulk_validation_general, bulk_validation_company_specific