Addon loading follows the client's `AddOn_Load` (`0x51f240`) and `.toc` reader (`0x51c9b0`):
- One driver serves the startup walk, `LoadAddOn` and the survey harness. It marks the addon loaded before its dependencies (`0x51f313`), so a requirement cycle loads both and `IsAddOnLoaded` answers during an addon's own load. It loads `## LoadWith` dependents after `ADDON_LOADED` (`0x51f5b2`).
- Every directive is matched by its own literal. `LoadOnDemand`, `Secure` and XML bool attributes parse with the client's string-to-bool (`0x6f1b30`), so `hidden="1"` works. Values are not trimmed, and only an unindented `##` line is a directive.
- `GetAddOnMetadata` reads the metadata map (`0x51d580`): Title defaults to the folder, the last value wins, and locale suffixes apply. The url comes from the server, never the `.toc`.
- `EnableAddOn` keeps a toggle for an addon that isn't installed.
Tests are mutation-checked against the reference order.
Fixes#192Fixes#193Fixes#405Fixes#986Fixes#987Fixes#990🤖 Generated with [Claude Code](https://claude.com/claude-code)
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
