When creating issues with explicit IDs like `bd create --id hq-cv-test`,
the prefix validation was failing even when `hq-cv` was in `allowed_prefixes`.
Root cause: `ExtractIssuePrefix("hq-cv-test")` returns `"hq"` (not `"hq-cv"`)
because "test" looks like an English word, causing the algorithm to fall back
to the first hyphen. The validation then checked if `"hq"` was in the allowed
list containing `"hq-cv"` - which failed.
The fix adds `ValidateIDPrefixAllowed()` which validates the full ID using
"starts with" matching (the same approach the importer uses successfully).
This correctly handles multi-hyphen prefixes like `hq-cv-` regardless of
what the suffix looks like.
Fixes#1135
Co-authored-by: Steven Syrek <steven.syrek@deepl.com>
Co-authored-by: Claude Opus 4.5 <noreply@anthropic.com>
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