chore: update n8n to 2.13.3 and bump version to 2.41.0

- Updated n8n from 2.12.3 to 2.13.3
- Updated n8n-core from 2.12.0 to 2.13.1
- Updated n8n-workflow from 2.12.0 to 2.13.1
- Updated @n8n/n8n-nodes-langchain from 2.12.0 to 2.13.1
- Rebuilt node database with 1,396 nodes (812 core + 584 community: 516 verified + 68 npm)
- Refreshed community nodes with 581 AI-generated documentation summaries
- Improved documentation generator: strip <think> tags, raw fetch for vLLM chat_template_kwargs
- Incremental community updates: saveNode uses ON CONFLICT DO UPDATE preserving READMEs/AI summaries
- fetch:community now upserts by default (use --rebuild for clean slate)
- Updated README badge and node counts
- Updated CHANGELOG and MEMORY_N8N_UPDATE.md

Conceived by Romuald Członkowski - https://www.aiadvisors.pl/en

Co-Authored-By: Claude <noreply@anthropic.com>

CHANGELOG.md

@@ -7,6 +7,18 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 
 ## [Unreleased]
 
+## [2.41.0] - 2026-03-25
+
+### Changed
+
+- **Updated n8n dependencies**: n8n 2.12.3 → 2.13.3, n8n-core 2.12.0 → 2.13.1, n8n-workflow 2.12.0 → 2.13.1, @n8n/n8n-nodes-langchain 2.12.0 → 2.13.1
+- **Rebuilt node database**: 1,396 nodes (812 from n8n-nodes-base/langchain + 584 community: 516 verified + 68 npm)
+- **Refreshed community nodes**: 584 total (up from 430), with 581 AI-generated documentation summaries
+- **Improved documentation generator**: Strip `<think>` tags from thinking-model responses; use raw fetch for vLLM `chat_template_kwargs` support
+- **Incremental community node updates**: `fetch:community` now upserts by default, preserving existing READMEs and AI summaries. Use `--rebuild` for clean slate
+
+Conceived by Romuald Czlonkowski - https://www.aiadvisors.pl/en
+
 ## [2.40.5] - 2026-03-22
 
 ### Fixed