Confluence API Doc Sync

Sync API documentation from a multi-file docs/api/ directory to Confluence — one endpoint file = one Confluence page. The directory structure maps directly to a Confluence page tree, so no heading-based splitting is needed.

Uses acli for authentication verification and page reading (to get current version), and Confluence REST API via curl for page updates.

Core Principle: Directory Structure = Confluence Page Tree

The docs/api/ directory (generated by api-doc-gen) already organizes endpoints as individual files grouped by domain. This skill maps that structure directly to Confluence:

docs/api/                              Confluence Page Tree
├── index.md                     →     Parent Page (overview + common errors)
├── consent/                     →     ├── Consent (domain group page)
│   ├── accept-consent.md        →     │   ├── Accept Consent
│   ├── get-consent.md           →     │   ├── Get Consent
│   └── revoke-consent.md        →     │   └── Revoke Consent
├── channel/                     →     ├── Channel (domain group page)
│   ├── create-channel.md        →     │   ├── Create Channel