`init` was recording `topics_by_wing[<raw-dirname>]` while `mempalace.yaml`
got the lower-cased separator-collapsed slug. At mine time the miner
read the slug from the yaml and missed the registry key, so
`_compute_topic_tunnels_for_wing` returned 0 silently for every project
whose folder contained a `-` or a space — the most common shape in the
wild.
Extracted the rule into `config.normalize_wing_name()` and routed both
`cli.cmd_init` (registry write) and `room_detector_local.detect_rooms_local`
(yaml write) through it. Added a regression test in `test_cli.py`
asserting the registry call uses the normalized slug, plus four direct
unit tests for the helper.
Refs #1180.
Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
bensig
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