Gitea forge: issue/PR field names not normalized - Tower shows `#undefined`, `NaNd`

[pseudoseed]

Gitea forge: issue/PR field names not normalized - Tower shows #undefined, NaNd

Summary

After locally patching the labels.map crash (issue #749), Tower overview loads but displays #undefined for every
issue number and NaNd for every age. The gitea preset scripts (issue-list.sh, pr-list.sh, recently-closed.sh,
recently-merged.sh) pipe raw tea --output json to the overview, but tea uses different field names than the
overview expects (which assumes GitHub's format).

Field mismatches

Overview expects (GitHub)	tea returns (Gitea)
number (int)	index (string)
createdAt	created
closedAt	not present (only updated)
mergedAt	not present (only updated)
author: {login: "..."}	author: "..." (flat string)
labels: [{name: "..."}]	labels: "" or CSV string
assignees: [{login: "..."}]	assignees: "" or CSV string
body	not in default fields
url	not in default fields

Reproduction

1. forge.provider: "gitea" in .codev/config.json
2. Repo has open issues on the Forgejo instance
3. Open Tower → Work tab
4. Result: every backlog item shows #undefined, type defaults to project, age shows NaNd

Suggested fix

Each gitea preset script should request the full field set via tea --fields ... and pipe through jq to normalize
to the GitHub-compatible shape the overview expects. For example, issue-list.sh:

tea issues list --limit 200 \
  --fields index,title,state,author,url,created,labels,assignees \
  --output json | \
  jq '[.[] | {
    number: (.index | tonumber),
    title, state, url,
    createdAt: .created,
    author: {login: .author},
    labels: (if .labels == "" then []
             else (.labels | split(",") | map({name: ltrimstr(" ")})) end),
    assignees: (if .assignees == "" then []
                else (.assignees | split(",") | map({login: ltrimstr(" ")})) end)
  }]'

Same pattern needed for pr-list.sh, recently-closed.sh (map updated → closedAt), and recently-merged.sh (map updated →
 mergedAt, filter state == "merged").

Affected scripts

- scripts/forge/gitea/issue-list.sh
- scripts/forge/gitea/pr-list.sh
- scripts/forge/gitea/recently-closed.sh
- scripts/forge/gitea/recently-merged.sh

Affected version: v3.0.3