Closes#52 — unblocks parallax#3 dispatch labeling, which needs to both
discover a repo's label set and attach labels to an issue by name (the
CAD pipeline doesn't track Gitea's internal numeric label IDs).
- gitea.Client: ListLabels, AddIssueLabels (additive POST, matches
Gitea's own semantics — no delete-then-post needed); extend the
existing Label struct with Color for label_list's output.
- tools.LabelList (read-only, allowlisted): lists a repo's labels.
- tools.IssueLabel (allowlisted): resolves label names to IDs via
ListLabels, so callers pass names (the primary interface) instead of
hunting for numeric IDs; also accepts label_ids for callers that
already have them. An unknown name fails closed, naming exactly which
label wasn't found.
- Bump TestRegisteredToolCount 39 -> 41 in the same commit (this
project was bitten today by a locked count going stale silently).
Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
