feat: implement metadata catalog database management

docs/agents/triage-labels.md

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+# Triage Labels
+
+The skills speak in terms of five canonical triage roles. This file maps those roles to the labels
+used in the canonical Gitea issue tracker.
+
+| Label in mattpocock/skills | Label in Gitea | Meaning |
+| --- | --- | --- |
+| `needs-triage` | `needs-triage` | Maintainer needs to evaluate this issue |
+| `needs-info` | `needs-info` | Waiting on reporter for more information |
+| `ready-for-agent` | `ready-for-agent` | Fully specified, ready for AFK agent work |
+| `ready-for-human` | `ready-for-human` | Requires human implementation |
+| `wontfix` | `wontfix` | Will not be actioned |
+
+Issue type labels:
+
+| Label in Gitea | Meaning |
+| --- | --- |
+| `bug` | Something is not working |
+| `enhancement` | New feature or request |