feat: add D.intelligence Agent Corps (9 skills + shared infra)

Add 9 agent skills (#70-#77, #88) for D.intelligence business operations:
brand guardian, brand editor, doc secretary, quotation manager, service
architect, marketing manager, back office manager, account manager, and
skill update meta-agent. Includes shared Python package (dintel), reference
docs, document/quotation templates, service module CSVs, cross-device
installer, and comprehensive user guide.

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

custom-skills/72-dintel-doc-secretary/README.md

@@ -0,0 +1,63 @@
+# 72 — D.intelligence Documentation Secretary
+
+**Agent #72** in the [D.intelligence Agent Corps](../../dintel-shared/README.md).
+Document formatting, meeting notes, reports, and deliverable preparation for [D.intelligence](https://dintelligence.co.kr).
+
+## What It Does
+
+1. **Meeting Notes** — Format meeting minutes from Notion "Meeting Library Hub" into structured templates with action items, decisions, and follow-ups
+2. **Report Formatting** — Apply D.intelligence brand formatting to reports, proposals, and presentations
+3. **Deliverable Preparation** — Convert Markdown to Notion to DOCX/PPTX pipeline for client-ready documents
+4. **Template Management** — Maintain and apply document templates consistently across all deliverables
+5. **Quality Control** — Ensure consistent format, style, and quality across all documents before handoff
+
+## Agent Corps Context
+
+| Field | Value |
+|-------|-------|
+| Agent # | 72 |
+| Skill Name | `dintel-doc-secretary` |
+| Version | 1.0.0 |
+| Autonomy | **Draft & Wait** — drafts documents, then waits for Andrew's review before finalizing |
+| Collaborates With | **#71 Brand Editor** (writing review), **#70 Brand Guardian** (compliance check), **#73 Account Manager** (client deliverables), **#77 Back Office Manager** (internal docs), **dintel-shared** (shared constants & document generation) |
+
+This agent uses shared utilities from `dintel-shared/src/dintel/`:
+- `document.py` — DOCX generation with D.intelligence branding
+- `brand.py` — Brand constants, colors, terminology
+- `notion.py` — Notion database IDs and client mappings
+
+## Triggers
+
+- "format meeting notes", "회의록 정리"
+- "prepare deliverable", "산출물 준비"
+- "format report", "리포트 포맷팅"
+- "apply brand template", "브랜드 템플릿 적용"
+- "convert to DOCX", "문서 변환"
+- "quality check document", "문서 품질 검토"
+
+## Workflow Chains
+
+- **Chain A (Deliverable)**: ... -> Doc Secretary formats deliverable -> Brand Editor checks writing -> Brand Guardian reviews compliance -> Andrew sends
+- **Chain B (Reporting)**: Account Mgr monitors -> Doc Secretary reports
+- **Chain D (Internal Docs)**: Back Office Mgr -> Doc Secretary formats
+
+## Universal Guardrails
+
+1. **Never send to clients without Andrew's approval** — All client-facing documents must be reviewed and approved by Andrew before delivery.
+2. **Never delete — always archive** — Move outdated documents to archive; never permanently delete.
+3. **Never commit pricing without Andrew's sign-off** — Pricing, quotes, and fee-related content require explicit approval.
+4. **Korean-first, bilingual notation for jargon** — Korean is the primary language; technical/English terms use bilingual notation on first use.
+5. **Never cross-reference client data without consent** — Client data is siloed; do not mix or reference across client accounts without explicit permission.
+
+## Structure
+
+```
+72-dintel-doc-secretary/
+├── code/
+│   └── CLAUDE.md              # Claude Code quick reference
+├── desktop/
+│   └── SKILL.md               # Full skill definition for Claude Desktop
+├── shared/
+│   └── templates/             # Document template references (empty for now)
+└── README.md
+```