alpha new hybridretriver line

migrations/Version20260225000100.php

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+<?php
+
+declare(strict_types=1);
+
+namespace DoctrineMigrations;
+
+use Doctrine\DBAL\Schema\Schema;
+use Doctrine\Migrations\AbstractMigration;
+
+final class Version20260225000100 extends AbstractMigration
+{
+    public function getDescription(): string
+    {
+        return 'Adds retrieval_max_chunks and retrieval_vector_top_k to model_generation_config (without DB defaults)';
+    }
+
+    public function up(Schema $schema): void
+    {
+        $this->addSql('ALTER TABLE model_generation_config 
+            ADD retrieval_max_chunks INT NOT NULL,
+            ADD retrieval_vector_top_k INT NOT NULL
+        ');
+    }
+
+    public function down(Schema $schema): void
+    {
+        $this->addSql('ALTER TABLE model_generation_config 
+            DROP retrieval_max_chunks,
+            DROP retrieval_vector_top_k
+        ');
+    }
+}

migrations/Version20260225000200.php

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+<?php
+
+declare(strict_types=1);
+
+namespace DoctrineMigrations;
+
+use Doctrine\DBAL\Schema\Schema;
+use Doctrine\Migrations\AbstractMigration;
+
+final class Version20260225000200 extends AbstractMigration
+{
+    public function getDescription(): string
+    {
+        return 'Fix schema drift (indexes, FK, longtext nullability)';
+    }
+
+    public function up(Schema $schema): void
+    {
+        $this->addSql('ALTER TABLE knowledge_tag CHANGE description description LONGTEXT DEFAULT NULL');
+        $this->addSql('ALTER TABLE knowledge_tag RENAME INDEX uniq_knowledge_tag_slug TO UNIQ_86B46255989D9B62');
+
+        $this->addSql('ALTER TABLE document DROP FOREIGN KEY FK_D8698A769407EE77');
+        $this->addSql('ALTER TABLE document ADD CONSTRAINT FK_D8698A769407EE77 FOREIGN KEY (current_version_id) REFERENCES document_version (id)');
+
+        $this->addSql('ALTER TABLE tag_rebuild_job CHANGE error_message error_message LONGTEXT DEFAULT NULL');
+
+        $this->addSql('ALTER TABLE document_tag RENAME INDEX idx_document_tag_document TO IDX_D0234567C33F7837');
+        $this->addSql('ALTER TABLE document_tag RENAME INDEX idx_document_tag_tag TO IDX_D0234567BAD26311');
+    }
+
+    public function down(Schema $schema): void
+    {
+        // Optional – in Drift-Fix-Migration meist nicht notwendig
+    }
+}