[Bugfix #1137] Fix gitea forge preset against the real tea CLI

[pseudoseed]

Fixes #1137.

Bugfix-protocol re-do of the earlier SPIR-style PR #1138 (now closed), per maintainer request. Same root cause, plus a real regression test.

Problem

The gitea forge preset was authored against the Gitea REST API JSON shape, but the scripts invoke the tea CLI, whose output shape differs — and several concepts referenced flags/fields/subcommands tea doesn't have. Per the in-repo #920 note, tea wasn't available in the authoring environment, so the preset was never run end-to-end.

Fix

Route the read concepts through tea api (raw REST passthrough returning the shape forge-contracts.ts + the jq normalizers expect):

• user-identity: tea api user | jq .login (tea whoami has no --output json)
• pr-view: tea api repos/<repo>/pulls/N → PrViewResult (incl. additions/deletions)
• pr-list: tea api repos/<repo>/pulls?state=open → PrListItem[]
• pr-exists: tea api repos/<repo>/pulls?state=all with nested .head.ref / .merged
• issue-view: tea api repos/<repo>/issues/N + a second call for the comments array (Gitea reports comments as an int count, which would crash .comments.filter(...))
• recently-merged: tea api repos/<repo>/pulls?state=closed, filter .merged, using real .merged_at
• issue-comment: tea comments add (tea issues has no comment subcommand)

tea api needs an explicit owner/repo path segment, so each api-based script derives owner/repo from the origin remote (honoring CODEV_REPO when set).

Testing

• New regression test stubs a fake tea on PATH answering api <endpoint> with captured Gitea REST fixtures (tea isn't in CI, per vscode: editor-tab webview for rich backlog search #920), runs each real script, and asserts the normalized output conforms to forge-contracts.ts — incl. comments-as-array, merged-only filtering, open/merged/closed pr-exists, and CODEV_REPO override.
• Updates the pr_exists porch check fails when PR is merged before gate approval #568 pr-exists assertion for the new state=all query param.
• Full suite green locally: build ✓, 3443 tests pass.

🤖 Generated with Claude Code

[waleedkadous]

Excellent work — thank you for the disciplined re-do, and apologies for the review latency. This is what a model bugfix PR looks like: every tea-CLI deficiency documented in-script with reasoning, the REST passthrough returning exactly the shape forge-contracts.ts expects, and a genuinely well-built regression suite (fake tea on PATH serving captured REST fixtures, the real scripts executed, contract-shape assertions, the comments-as-int crash and null-login team reviewers both covered). We verified every output mapping field-by-field against the contracts — all conform — and the switch from string-interpolated jq to --arg in pr-exists is a quiet security improvement worth crediting.

One substantive question before merge, and two optional polish items:

1. Pagination cap (the one we'd like addressed or answered). Gitea servers cap page size at max_response_items (default 50), so ?limit=200 likely returns 50 items with no client-side pagination in the raw passthrough. That means pr-exists?state=all can false-negative for a branch whose PR isn't in the most recent ~50 (which would block a porch pr_exists gate), and recently-merged (previously --limit 1000) can miss on a busy repo. A pagination loop (page=1..N until a short page) would settle it — or at minimum a comment documenting the server-side cap and the false-negative window, so the next debugger isn't blind. Happy with either; we'd just like the behavior to be chosen rather than inherited.

2. (Polish, optional) With no origin remote or an unusual URL, REPO silently becomes empty/garbage and tea api "repos//…" fails with a confusing 404. An explicit [ -n "$REPO" ] || { echo "…set CODEV_REPO" >&2; exit 1; } naming the remedy would fit this repo's fail-fast convention — ideally factored once since the derivation appears in five scripts.

3. (Polish, optional) A failed comments fetch silently yields comments: [] — indistinguishable from "no comments" for consumers reading issue discussion. A stderr warning on the degraded path would keep the graceful behavior while leaving a trace.

Verdict: approve once item 1 is addressed (fix or documented caveat — your choice). Items 2–3 are welcome in this PR or a follow-up, contributor's choice.

[pseudoseed]

Thanks for the thorough review — all three items addressed in 3c2e3c2b.

1. Pagination — fixed (real page loop, not a comment). You're right that ?limit=200 inherited Gitea's max_response_items cap (default 50) and silently truncated. Added a shared tea_api_paged helper in a new scripts/forge/gitea/_lib.sh that requests page=1,2,3… at an explicit limit=50, concatenates each page's array (jq -s add), and stops when a page comes back shorter than the limit (or empty). Chosen behavior: it paginates, with a hard ceiling of 100 pages (100 × 50 = 5000 items) so a misbehaving server can't spin forever — documented in the helper. Wired into all three list reads: pr-exists (state=all), pr-list (state=open), recently-merged (state=closed). Output shape is unchanged — the concatenated array feeds the existing jq normalizers untouched. New tests serve a full 50-item page 1 + a short page 2 and assert an item that exists only on page 2 is found by each of the three scripts (pr-exists returns true for it, pr-list/recently-merged include it).

2. REPO fail-fast, factored once — done. The CODEV_REPO/origin-derivation line (duplicated in five scripts) now lives in _lib.sh#gitea_repo, sourced via . "$(dirname "$0")/_lib.sh" by issue-view, pr-exists, pr-list, pr-view, and recently-merged. It validates the result is a clean owner/repo; if not (no origin, unusual URL), it prints set CODEV_REPO=owner/repo to stderr and exits non-zero instead of letting tea api "repos//…" 404. Verified before factoring: forge.ts builds presets from the explicit KNOWN_CONCEPTS allowlist (a leading-underscore file is never registered as a concept), package.json files ships scripts/forge so _lib.sh is packaged, it's POSIX sh (no bashisms), and $0-relative sourcing works when the script is invoked by absolute path (how forge runs it via sh -c). Tests cover missing-origin and garbage-URL → non-zero exit + the stderr remedy.

3. Degraded comments warn — done. issue-view still degrades a failed comments fetch to [], but now writes gitea forge: comments fetch failed for issue N; reporting 0 comments to stderr while stdout stays pure JSON. Test asserts both (comments: [] on stdout and the stderr warning).

Full suite green in the worktree: 3449 passed | 48 skipped, 0 failures (pnpm build + pnpm test). The #568 pr-exists state=all assertion stays green (the helper is still called with state=all).