majia-guanyuan

Tool-agnostic Agent Skill for Guandata BI (观远 BI). Data analysis + ETL governance/write + custom chart development + HTML application-style dashboard generation. Compatible with Claude Code, OpenClaw, Codex, Hermes (gbrain). V2.1.5: NEW references/restaurant-bi-formulas/ — fully-anonymized restaurant-chain BI formula playbook (10 markdown files, 2881 lines) distilled from two production analyst tenures: 60+ SQL snippets across 7 domains (date/time, customer/membership w/ RFM 8-class × marketing-action mapping, revenue KPIs, channel/store lifecycle, coupon/discount, SQL utilities, data-quality traps) + 6 ETL engineering patterns (10-CTE DWD wide-table, light-node-heavy-SQL vs heavy-node-light-SQL philosophy, financial dual-source reconciliation, POS system identification, member lifecycle multi-output, Cohort date×store grid) + 39 production ETL catalog index across 11 business domains. V2.1.4: command surface synced with @guandata/guancli 1.0.21 — `metric query` generalized-query flags, `card preview -f excel` export, cleaner runtime error output. V2.1.1: HTML application-style dashboard generation (Part C-12). V2.1.0: @guandata/guanvis-skill@0.1.13 internal-Nexus rollout. V2.0.0: renamed from guanyuan-majia, aligned with guancli 1.0.19. V1.5.0: progressive-disclosure architecture saves ~1.2万 tokens per invocation.