feat(bots): Implement comprehensive bot system with autonomous posting, content management, and API endpoints

- Add bot management system with creation, suspension, and reinstatement functionality
- Implement autonomous bot posting with scheduling, rate limiting, and content generation
- Add content fetching system supporting RSS feeds and multiple content sources
- Implement LLM-based content generation with customizable bot personalities
- Add mention handling and automated response system for bot interactions
- Implement API key management with encryption using AUTH_SECRET for simplified deployment
- Add comprehensive bot logging system for activity tracking and error monitoring
- Create bot administration pages and settings UI for managing bot configurations
- Add database migrations for bot system schema including users, sources, and content items
- Implement cron job system for automated bot operations and scheduled tasks
- Add extensive test coverage with unit and property-based tests for core bot modules
- Simplify encryption by deriving keys from AUTH_SECRET instead of separate environment variable
- Implement automatic content fetching on post trigger with retry logic
- Add Reddit-specific link preview handling using oEmbed API for reliable metadata extraction
- Create utility scripts for bot inspection and cleanup operations
- Add comprehensive bot system documentation and improvement tracking

drizzle/0005_bots_as_users.sql

@@ -0,0 +1,34 @@
+-- Bots as First-Class Users Migration
+-- This migration transforms bots to have their own user accounts
+
+-- Add bot-related fields to users table
+ALTER TABLE "users" ADD COLUMN "is_bot" boolean DEFAULT false NOT NULL;
+ALTER TABLE "users" ADD COLUMN "bot_owner_id" uuid REFERENCES "users"("id") ON DELETE CASCADE;
+
+-- Create indexes for bot fields
+CREATE INDEX IF NOT EXISTS "users_is_bot_idx" ON "users" ("is_bot");
+CREATE INDEX IF NOT EXISTS "users_bot_owner_idx" ON "users" ("bot_owner_id");
+
+-- Add owner_id to bots table (will be populated during migration)
+ALTER TABLE "bots" ADD COLUMN "owner_id" uuid REFERENCES "users"("id") ON DELETE CASCADE;
+
+-- Copy existing userId to ownerId (existing bots were owned by the user)
+UPDATE "bots" SET "owner_id" = "user_id";
+
+-- Make owner_id NOT NULL after populating
+ALTER TABLE "bots" ALTER COLUMN "owner_id" SET NOT NULL;
+
+-- Create index for owner_id
+CREATE INDEX IF NOT EXISTS "bots_owner_id_idx" ON "bots" ("owner_id");
+
+-- Remove columns that are now on the user account
+-- Note: handle, bio, avatarUrl, publicKey, privateKeyEncrypted move to users table
+-- We'll keep them for now and handle migration in application code
+-- ALTER TABLE "bots" DROP COLUMN "handle";
+-- ALTER TABLE "bots" DROP COLUMN "bio";
+-- ALTER TABLE "bots" DROP COLUMN "avatar_url";
+-- ALTER TABLE "bots" DROP COLUMN "public_key";
+-- ALTER TABLE "bots" DROP COLUMN "private_key_encrypted";
+
+-- Drop the handle index since handle is now on users
+DROP INDEX IF EXISTS "bots_handle_idx";