feat: add 4 content categories, chat export, and update roadmap

Content Library:
- Children & Family: African Storybooks, Gutenberg children's lit,
  Wikipedia for Schools, PhET simulations, TED-Ed series
- Languages & Reference: Wiktionary in 6 languages (EN/ES/FR/AR/DE/PT)
  across 3 tiers by language coverage
- History & Culture: Project Gutenberg history/biography, History Q&A,
  American history texts, Wikipedia History & Culture
- Legal & Civic: Civics guides, Gutenberg law texts, Law Q&A,
  Personal Finance Q&A, Wikipedia Politics & Government

Chat Export:
- New GET /api/chat/sessions/:id/export endpoint
- Returns full conversation as a downloadable Markdown file
- Filename derived from session title (slugified)
- Includes model name, export timestamp, and all messages

Roadmap:
- Update CATEGORIES-TODO.md to mark 10 categories complete
- Add Trades & Vocational and Communications as next high-priority items

https://claude.ai/code/session_01WfRC4tDeYprykhMrg4PxX6

admin/app/controllers/chats_controller.ts

@@ -100,6 +100,40 @@ export default class ChatsController {
     }
   }
 
+  async exportMarkdown({ params, response }: HttpContext) {
+    const sessionId = parseInt(params.id)
+    const session = await this.chatService.getSession(sessionId)
+
+    if (!session) {
+      return response.status(404).json({ error: 'Session not found' })
+    }
+
+    const lines: string[] = [
+      `# ${session.title}`,
+      ``,
+      `**Model:** ${session.model}  `,
+      `**Exported:** ${new Date().toUTCString()}`,
+      ``,
+      `---`,
+      ``,
+    ]
+
+    for (const msg of session.messages ?? []) {
+      const label = msg.role === 'user' ? '**You**' : '**Assistant**'
+      lines.push(`${label}`, ``, msg.content, ``, `---`, ``)
+    }
+
+    const filename = session.title
+      .toLowerCase()
+      .replace(/[^a-z0-9]+/g, '-')
+      .replace(/^-|-$/g, '')
+    const markdown = lines.join('\n')
+
+    response.header('Content-Type', 'text/markdown; charset=utf-8')
+    response.header('Content-Disposition', `attachment; filename="${filename}.md"`)
+    return response.send(markdown)
+  }
+
   async destroyAll({ response }: HttpContext) {
     try {
       const result = await this.chatService.deleteAllSessions()

admin/start/routes.ts

@@ -116,6 +116,7 @@ router
     router.post('/', [ChatsController, 'store'])
     router.delete('/all', [ChatsController, 'destroyAll'])
     router.get('/:id', [ChatsController, 'show'])
+    router.get('/:id/export', [ChatsController, 'exportMarkdown'])
     router.put('/:id', [ChatsController, 'update'])
     router.delete('/:id', [ChatsController, 'destroy'])
     router.post('/:id/messages', [ChatsController, 'addMessage'])

collections/CATEGORIES-TODO.md

@@ -6,72 +6,53 @@ Potential categories to add to the tiered collections system in `kiwix-categorie
 - [x] Medicine - Medical references, first aid, emergency care
 - [x] Survival & Preparedness - Food prep, prepper videos, repair guides
 - [x] Education & Reference - Wikipedia, textbooks, TED talks
+- [x] DIY & Repair - Woodworking, vehicle repair, home improvement, iFixit
+- [x] Agriculture & Food - Cooking, gardening, homesteading, food preservation
+- [x] Computing & Technology - freeCodeCamp, DevDocs, Arduino, Raspberry Pi, electronics
+- [x] Children & Family - African Storybooks, Gutenberg children's lit, Wikipedia for Schools, PhET simulations
+- [x] Languages & Reference - Wiktionary (EN, ES, FR, AR, DE, PT)
+- [x] History & Culture - Project Gutenberg history, History Q&A, Wikipedia History
+- [x] Legal & Civic - Civics guides, Gutenberg law, Law Q&A, Personal Finance Q&A
 
 ---
 
 ## High Priority
 
-### Technology & Programming
-Stack Overflow, developer documentation, coding tutorials
-- Stack Overflow (multiple tags available)
-- DevDocs documentation
-- freeCodeCamp
-- Programming language references
-
-### Children & Family
-Age-appropriate educational content for kids
-- Wikipedia for Schools
-- Wikibooks Children's Bookshelf
-- Khan Academy Kids (via Kolibri - separate system)
-- Storybooks, fairy tales
-
 ### Trades & Vocational
-Practical skills for building, fixing, and maintaining
+Practical skills beyond DIY — licensed trades and professional vocational content
-- Electrical wiring guides
+- Electrical wiring codes and guides
-- Plumbing basics
+- Plumbing fundamentals
-- Automotive repair
+- Welding techniques
-- Woodworking
+- HVAC basics
-- Welding fundamentals
+- Construction safety
 
-### Agriculture & Gardening
+### Communications
-Food production and farming (expand beyond what's in Survival)
+Emergency and amateur radio, networking
-- Practical Plants database
+- Ham radio guides (ARRL)
-- Permaculture guides
+- Emergency communication protocols (FEMA/NIMS)
-- Seed saving
+- Basic networking/IT
-- Animal husbandry
+- Signal procedures
-- Composting and soil management
 
 ---
 
 ## Medium Priority
 
-### Languages & Reference
+### Mental Health & Psychology
-Dictionaries, language learning, translation
+- Psychology Stack Exchange
-- Wiktionary (multiple languages)
+- Mindfulness and wellness guides
-- Language learning resources
+- Crisis support references
-- Translation dictionaries
-- Grammar guides
 
-### History & Culture
+### Religion & Philosophy
-Historical knowledge and cultural encyclopedias
+Spiritual and philosophical texts
-- Wikipedia History portal content
+- Religious texts (various traditions)
-- Historical documents
+- Philosophy references (Stanford Encyclopedia if available)
-- Cultural archives
+- Ethics guides
-- Biographies
 
-### Legal & Civic
+### Regional/Non-English Bundles
-Laws, rights, and civic procedures
+Content in other languages
-- Legal references
+- Spanish Wikipedia (mini)
-- Constitutional documents
+- French Wikipedia (mini)
-- Civic procedures
+- Other major languages
-- Rights and responsibilities
-
-### Communications
-Emergency and amateur radio, networking
-- Ham radio guides
-- Emergency communication protocols
-- Basic networking/IT
-- Signal procedures
 
 ---
 
@@ -79,23 +60,10 @@ Emergency and amateur radio, networking
 
 ### Entertainment
 Recreational reading and activities
-- Project Gutenberg (fiction categories)
+- Project Gutenberg fiction (lcc-pr: English literature)
 - Chess tutorials
-- Puzzles and games
 - Music theory
 
-### Religion & Philosophy
-Spiritual and philosophical texts
-- Religious texts (various traditions)
-- Philosophy references
-- Ethics guides
-
-### Regional/Non-English Bundles
-Content in other languages
-- Spanish language bundle
-- French language bundle
-- Other major languages
-
 ---
 
 ## Notes

collections/kiwix-categories.json

@@ -615,5 +615,306 @@
         }
       ]
     }
+  ,
+    {
+      "name": "Children & Family",
+      "slug": "children",
+      "icon": "IconAbc",
+      "description": "Age-appropriate educational content, storybooks, and family learning resources for young readers.",
+      "language": "en",
+      "tiers": [
+        {
+          "name": "Essential",
+          "slug": "children-essential",
+          "description": "Illustrated storybooks and children's literature classics. Lightweight and fun.",
+          "recommended": true,
+          "resources": [
+            {
+              "id": "storybooks-en_en_all",
+              "version": "2024-05",
+              "title": "African Storybooks",
+              "description": "Illustrated storybooks for early readers in English",
+              "url": "https://download.kiwix.org/zim/other/storybooks-en_en_all_2024-05.zim",
+              "size_mb": 77
+            },
+            {
+              "id": "gutenberg_en_lcc-pz",
+              "version": "2026-03",
+              "title": "Project Gutenberg: Children's Literature",
+              "description": "Classic children's books and fairy tales from public domain",
+              "url": "https://download.kiwix.org/zim/gutenberg/gutenberg_en_lcc-pz_2026-03.zim",
+              "size_mb": 490
+            }
+          ]
+        },
+        {
+          "name": "Standard",
+          "slug": "children-standard",
+          "description": "Adds Wikipedia for Schools - curriculum-aligned articles for K-12 learners. Includes Essential.",
+          "includesTier": "children-essential",
+          "resources": [
+            {
+              "id": "wikipedia_en_schools",
+              "version": "2023-10",
+              "title": "Wikipedia for Schools",
+              "description": "Curriculum-aligned Wikipedia articles selected for K-12 education",
+              "url": "https://download.kiwix.org/zim/wikipedia/wikipedia_en_schools_2023-10.zim",
+              "size_mb": 3800
+            }
+          ]
+        },
+        {
+          "name": "Comprehensive",
+          "slug": "children-comprehensive",
+          "description": "Full educational library with interactive science simulations and math tools. Includes Standard.",
+          "includesTier": "children-standard",
+          "resources": [
+            {
+              "id": "phet.colorado.edu_en_all",
+              "version": "2025-08",
+              "title": "PhET Interactive Simulations",
+              "description": "Interactive science and math simulations from University of Colorado",
+              "url": "https://download.kiwix.org/zim/phet/phet.colorado.edu_en_all_2025-08.zim",
+              "size_mb": 320
+            },
+            {
+              "id": "ted_mul_ted-ed-series",
+              "version": "2025-07",
+              "title": "TED-Ed: Think Like a Coder",
+              "description": "Animated educational series on logic, coding concepts, and problem solving",
+              "url": "https://download.kiwix.org/zim/ted/ted_mul_ted-ed-series_2025-07.zim",
+              "size_mb": 710
+            }
+          ]
+        }
+      ]
+    },
+    {
+      "name": "Languages & Reference",
+      "slug": "languages",
+      "icon": "IconLanguage",
+      "description": "Dictionaries, language references, and translation tools for over 170 languages.",
+      "language": "en",
+      "tiers": [
+        {
+          "name": "Essential",
+          "slug": "languages-essential",
+          "description": "English dictionary and thesaurus for everyday language reference.",
+          "recommended": true,
+          "resources": [
+            {
+              "id": "wiktionary_en_all_nopic",
+              "version": "2025-10",
+              "title": "Wiktionary (English)",
+              "description": "Community-built dictionary with definitions, pronunciations, and etymology",
+              "url": "https://download.kiwix.org/zim/wiktionary/wiktionary_en_all_nopic_2025-10.zim",
+              "size_mb": 1100
+            }
+          ]
+        },
+        {
+          "name": "Standard",
+          "slug": "languages-standard",
+          "description": "Adds Spanish and French dictionaries for multilingual households. Includes Essential.",
+          "includesTier": "languages-essential",
+          "resources": [
+            {
+              "id": "wiktionary_es_all_nopic",
+              "version": "2025-10",
+              "title": "Wiktionary (Spanish)",
+              "description": "Spanish language dictionary with definitions and grammar notes",
+              "url": "https://download.kiwix.org/zim/wiktionary/wiktionary_es_all_nopic_2025-10.zim",
+              "size_mb": 780
+            },
+            {
+              "id": "wiktionary_fr_all_nopic",
+              "version": "2025-10",
+              "title": "Wiktionary (French)",
+              "description": "French language dictionary with definitions and conjugations",
+              "url": "https://download.kiwix.org/zim/wiktionary/wiktionary_fr_all_nopic_2025-10.zim",
+              "size_mb": 900
+            }
+          ]
+        },
+        {
+          "name": "Comprehensive",
+          "slug": "languages-comprehensive",
+          "description": "Extended multilingual library with Arabic, German, and Portuguese. Includes Standard.",
+          "includesTier": "languages-standard",
+          "resources": [
+            {
+              "id": "wiktionary_ar_all_nopic",
+              "version": "2025-10",
+              "title": "Wiktionary (Arabic)",
+              "description": "Arabic language dictionary and reference",
+              "url": "https://download.kiwix.org/zim/wiktionary/wiktionary_ar_all_nopic_2025-10.zim",
+              "size_mb": 340
+            },
+            {
+              "id": "wiktionary_de_all_nopic",
+              "version": "2025-10",
+              "title": "Wiktionary (German)",
+              "description": "German language dictionary with definitions and grammar",
+              "url": "https://download.kiwix.org/zim/wiktionary/wiktionary_de_all_nopic_2025-10.zim",
+              "size_mb": 700
+            },
+            {
+              "id": "wiktionary_pt_all_nopic",
+              "version": "2025-10",
+              "title": "Wiktionary (Portuguese)",
+              "description": "Portuguese language dictionary and reference",
+              "url": "https://download.kiwix.org/zim/wiktionary/wiktionary_pt_all_nopic_2025-10.zim",
+              "size_mb": 560
+            }
+          ]
+        }
+      ]
+    },
+    {
+      "name": "History & Culture",
+      "slug": "history",
+      "icon": "IconTimeline",
+      "description": "World history, biographies, geography, and cultural heritage from ancient to modern times.",
+      "language": "en",
+      "tiers": [
+        {
+          "name": "Essential",
+          "slug": "history-essential",
+          "description": "Classic historical texts and military history from public domain.",
+          "recommended": true,
+          "resources": [
+            {
+              "id": "gutenberg_en_lcc-d",
+              "version": "2026-03",
+              "title": "Project Gutenberg: History & Geography",
+              "description": "Classic works on world history, exploration, and civilizations",
+              "url": "https://download.kiwix.org/zim/gutenberg/gutenberg_en_lcc-d_2026-03.zim",
+              "size_mb": 3800
+            }
+          ]
+        },
+        {
+          "name": "Standard",
+          "slug": "history-standard",
+          "description": "Adds Stack Exchange history Q&A and biographies. Includes Essential.",
+          "includesTier": "history-essential",
+          "resources": [
+            {
+              "id": "history.stackexchange.com_en_all",
+              "version": "2025-12",
+              "title": "History Q&A",
+              "description": "Stack Exchange Q&A on historical events, people, and timelines",
+              "url": "https://download.kiwix.org/zim/stack_exchange/history.stackexchange.com_en_all_2025-12.zim",
+              "size_mb": 303
+            },
+            {
+              "id": "gutenberg_en_lcc-e",
+              "version": "2026-03",
+              "title": "Project Gutenberg: American History",
+              "description": "Founding documents, historical narratives, and American biographies",
+              "url": "https://download.kiwix.org/zim/gutenberg/gutenberg_en_lcc-e_2026-03.zim",
+              "size_mb": 2600
+            }
+          ]
+        },
+        {
+          "name": "Comprehensive",
+          "slug": "history-comprehensive",
+          "description": "Deep cultural archive including philosophy, literature, and world biographies. Includes Standard.",
+          "includesTier": "history-standard",
+          "resources": [
+            {
+              "id": "wikipedia_en_history_maxi",
+              "version": "2025-11",
+              "title": "Wikipedia History & Culture",
+              "description": "Curated Wikipedia articles on history, biography, and cultural heritage",
+              "url": "https://download.kiwix.org/zim/wikipedia/wikipedia_en_history_maxi_2025-11.zim",
+              "size_mb": 3100
+            },
+            {
+              "id": "gutenberg_en_lcc-b",
+              "version": "2026-03",
+              "title": "Project Gutenberg: Philosophy & Biography",
+              "description": "Works on philosophy, psychology, ethics, and notable biographies",
+              "url": "https://download.kiwix.org/zim/gutenberg/gutenberg_en_lcc-b_2026-03.zim",
+              "size_mb": 1900
+            }
+          ]
+        }
+      ]
+    },
+    {
+      "name": "Legal & Civic",
+      "slug": "legal",
+      "icon": "IconScale",
+      "description": "Know your rights - legal references, civic documents, and law Q&A for everyday situations.",
+      "language": "en",
+      "tiers": [
+        {
+          "name": "Essential",
+          "slug": "legal-essential",
+          "description": "Core civic documents and foundational legal texts. Essential reference for any household.",
+          "recommended": true,
+          "resources": [
+            {
+              "id": "zimgit-zimgit-civics_en",
+              "version": "2024-08",
+              "title": "Civics & Government",
+              "description": "US government structure, Constitution, Bill of Rights, and civic participation guides",
+              "url": "https://download.kiwix.org/zim/other/zimgit-civics_en_2024-08.zim",
+              "size_mb": 12
+            },
+            {
+              "id": "gutenberg_en_lcc-k",
+              "version": "2026-03",
+              "title": "Project Gutenberg: Law",
+              "description": "Historical legal texts, treatises, and foundational law documents",
+              "url": "https://download.kiwix.org/zim/gutenberg/gutenberg_en_lcc-k_2026-03.zim",
+              "size_mb": 470
+            }
+          ]
+        },
+        {
+          "name": "Standard",
+          "slug": "legal-standard",
+          "description": "Adds community legal Q&A for practical everyday legal questions. Includes Essential.",
+          "includesTier": "legal-essential",
+          "resources": [
+            {
+              "id": "law.stackexchange.com_en_all",
+              "version": "2025-12",
+              "title": "Law Q&A",
+              "description": "Stack Exchange Q&A covering contracts, tenant rights, employment, and everyday legal questions",
+              "url": "https://download.kiwix.org/zim/stack_exchange/law.stackexchange.com_en_all_2025-12.zim",
+              "size_mb": 229
+            }
+          ]
+        },
+        {
+          "name": "Comprehensive",
+          "slug": "legal-comprehensive",
+          "description": "Complete legal reference including personal finance and government data. Includes Standard.",
+          "includesTier": "legal-standard",
+          "resources": [
+            {
+              "id": "personalfinance.stackexchange.com_en_all",
+              "version": "2025-12",
+              "title": "Personal Finance Q&A",
+              "description": "Stack Exchange Q&A on budgeting, taxes, investing, and financial planning",
+              "url": "https://download.kiwix.org/zim/stack_exchange/personalfinance.stackexchange.com_en_all_2025-12.zim",
+              "size_mb": 407
+            },
+            {
+              "id": "wikipedia_en_wp_politics_maxi",
+              "version": "2025-11",
+              "title": "Wikipedia Politics & Government",
+              "description": "Curated Wikipedia articles on political systems, governments, and civic institutions",
+              "url": "https://download.kiwix.org/zim/wikipedia/wikipedia_en_wp_politics_maxi_2025-11.zim",
+              "size_mb": 890
+            }
+          ]
+        }
+      ]
+    }
   ]
 }