city-profile
version: 2.1
released: 2026-06-27
license: open (personal / team use, adaptation welcome)

structure:
  - SKILL.md          # Chinese entry (with bilingual description)
  - SKILL.en.md       # English summary
  - README.md         # English README (start here if non-Chinese)
  - USAGE.md          # User-facing handbook (Chinese)
  - references/       # Framework, presets, toolkits, field-actions, POI lib, evolution
  - examples/         # Sample run artifacts (Hanoi business trip)

what's-in-v2.1:
  - 7-layer onion (was 6 in v1)
  - purpose × persona dual-axis weighting (5 × 5 = 25 combinations)
  - region-aware toolkit + field-actions split (cn-mainland / global-en)
  - cost overview as Layer-4 must-do
  - 5-year trend lines as Layer-6 must-do
  - mandatory Phase-4 retrospective on every run
  - POI library with confidence labels (ai_estimate / web_verified / verified / wrong / outdated)
  - cross-run meta-retrospective + reverse-update mechanism (evolution.md)

bilingual-note:
  Methodology docs are primarily in Chinese. Region-aware toolkit & field-actions
  layers have parallel cn-mainland (Chinese) and global-en (English) variants.
  SKILL.en.md and README.md are the English entry points.

sanitized-from: a personal skills workspace
sanitized-on: 2026-06-27
