Initial commit: LangChain evolution tutorial deck (132 slides)

- Cover, TOC, 5 dividers, 3 recap slides - 5 sections (chains, langgraph, deepagents, openswe, ecosystem) - design-system.js with theme tokens + 9 helper functions - research/: timeline + sources + per-tech notes - final-compile.js + merge.js for rebuild pipeline - output/: langchain-evolution.pptx (2.3 MB) + langchain-evolution.pdf (1.1 MB) + 7 sample previews
2026-06-22 11:29:03 +03:00
parent ed5b5c91bf
commit 75601988c2
220 changed files with 13069 additions and 3 deletions
@@ -0,0 +1,71 @@
+// Slide 03: Installation + environment setup
+// Code slide with two-column layout: pip install + env vars.
+
+const ds = require('./design-system');
+
+function createSlide(pres, theme) {
+  const slide = pres.addSlide();
+  ds.helpers.slideBase(slide, pres, theme);
+
+  ds.helpers.addHeader(slide, pres, theme, {
+    eyebrow: 'STAGE 5: ECOSYSTEM',
+    section: 'Установка',
+    title: 'pip install и 3 переменные окружения',
+    sectionNumber: 5,
+    titleSize: 22,
+  });
+
+  // Left code block -- pip install
+  ds.helpers.addCodeBlock(slide, pres, theme, {
+    x: 0.5, y: 1.45, w: 4.5, h: 2.5,
+    language: 'bash',
+    filePath: 'shell/install_langsmith.sh',
+    fontSize: 10,
+    code: [
+      '# Standalone SDK (если не используете langchain)',
+      'pip install langsmith',
+      '',
+      '# С langchain/LangGraph auto-tracing работает',
+      '# автоматически при env-переменных -- отдельно',
+      '# ставить SDK необязательно.',
+      'pip install langchain langgraph',
+    ].join('\n'),
+  });
+
+  // Right code block -- env vars
+  ds.helpers.addCodeBlock(slide, pres, theme, {
+    x: 5.2, y: 1.45, w: 4.3, h: 2.5,
+    language: 'bash',
+    filePath: 'shell/env.sh',
+    fontSize: 10,
+    code: [
+      '# 1. Tracing on/off (default: true если есть API key)',
+      'export LANGSMITH_TRACING=true',
+      '',
+      '# 2. API key: https://smith.langchain.com/settings',
+      'export LANGSMITH_API_KEY="lsv2_pt_..."',
+      '',
+      '# 3. Project name (default: "default")',
+      'export LANGSMITH_PROJECT="my-agent-dev"',
+      '',
+      '# Опционально: self-hosted endpoint',
+      '# export LANGSMITH_ENDPOINT=...',
+    ].join('\n'),
+  });
+
+  // Bottom callout -- safe positioning
+  ds.helpers.addCallout(slide, pres, theme, {
+    x: 0.5, y: 4.15, w: 9.0, h: 0.8,
+    kind: 'info',
+    title: 'Zero-config для LangChain/LangGraph',
+    text: 'Если LANGSMITH_API_KEY задан, chain.invoke/graph.invoke/agent.stream ' +
+          'пишут trace автоматически -- без оберток и monkey-patch.',
+  });
+
+  ds.helpers.addSourceLine(slide, pres, theme, {
+    source: 'docs.smith.langchain.com Observability > Set up tracing',
+  });
+  ds.helpers.addPageNumber(slide, pres, theme, 3);
+}
+
+module.exports = { createSlide };