fix(agent-loop): replace tea with fgj for CI run queries

tea api returns HTML 504 pages with exit 0, causing JSONDecodeError.
fgj actions run list is more reliable and consistent with the rest of
the script. Adapted PR-event matching to use prettyref="#N" since fgj
does not expose event_payload.

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

scripts/agent_loop.py

@@ -46,7 +46,7 @@ import time
 from datetime import datetime, timezone
 from pathlib import Path
 
-# Cron runs with a minimal PATH; ensure Nix profile binaries (tea, claude) and ~/go/bin (fgj) are found.
+# Cron runs with a minimal PATH; ensure Nix profile binaries (claude) and ~/go/bin (fgj) are found.
 os.environ["PATH"] = (
     f"{Path.home()}/.nix-profile/bin"
     f":{Path.home()}/go/bin"
@@ -97,27 +97,27 @@ def _fgj(*args: str) -> None:
         )
 
 
-def _tea_get(path: str) -> dict | list | None:
-    """Run a tea api GET and return parsed JSON. Only use for reads — tea PATCH/PUT
-    silently fails (exits 0) when unauthenticated, so writes must go via fgj."""
-    cmd = ["tea", "api", path]
-    result = subprocess.run(cmd, capture_output=True, text=True)
+def _fgj_run_list(limit: int = 20) -> list[dict]:
+    """Return workflow runs via fgj actions run list."""
+    result = subprocess.run(
+        ["fgj", "--hostname", "codeberg.org", "actions", "run", "list",
+         "--repo", REPO, "--json", "-L", str(limit)],
+        capture_output=True, text=True,
+    )
     if result.returncode != 0:
         raise RuntimeError(
-            f"tea api {path} failed:\n{result.stderr or result.stdout}"
+            f"fgj actions run list failed:\n{result.stderr or result.stdout}"
         )
     out = result.stdout.strip()
     if not out:
-        return None
+        return []
     try:
         data = json.loads(out)
     except json.JSONDecodeError as exc:
         raise RuntimeError(
-            f"tea api {path} returned non-JSON (exit 0):\n{out[:500]}"
+            f"fgj actions run list returned non-JSON:\n{out[:500]}"
         ) from exc
-    if isinstance(data, dict) and "message" in data and "url" in data:
-        raise RuntimeError(f"tea api {path} returned error: {data['message']}")
-    return data
+    return data if isinstance(data, list) else []
 
 
 def _set_labels(issue: int, add: list[str], remove: list[str]) -> None:
@@ -186,9 +186,7 @@ def _latest_main_ci_run() -> dict | None:
     event=push and prettyref=main, so filtering by event alone is not enough.
     We also require workflow_id == "ci.yml".
     """
-    data = _tea_get(f"repos/{REPO}/actions/runs?limit=20")
-    runs = (data or {}).get("workflow_runs", [])
-    for run in runs:
+    for run in _fgj_run_list(limit=20):
         if (run.get("event") == "push"
                 and run.get("prettyref") == "main"
                 and run.get("workflow_id") == "ci.yml"):
@@ -199,20 +197,16 @@ def _latest_main_ci_run() -> dict | None:
 def _latest_ci_run_for_branch(branch: str) -> dict | None:
     """Return the latest CI run for a specific branch, or None.
 
-    Forgejo's workflow_runs API has no top-level head_branch field.
-    For push events the branch is in ``prettyref``; for pull_request
-    events it lives inside ``event_payload["pull_request"]["head"]["ref"]``.
+    For push events fgj reports the branch in ``prettyref``; for pull_request
+    events ``prettyref`` is ``#N``, so we resolve the PR number first.
     """
-    data = _tea_get(f"repos/{REPO}/actions/runs?limit=20")
-    runs = (data or {}).get("workflow_runs", [])
+    runs = _fgj_run_list(limit=20)
+    pr_data = _find_pr_for_branch(branch)
+    pr_ref = f"#{pr_data['number']}" if pr_data else None
     for run in runs:
         if run.get("event") == "pull_request":
-            try:
-                payload = json.loads(run.get("event_payload", "{}"))
-                if payload.get("pull_request", {}).get("head", {}).get("ref") == branch:
-                    return run
-            except (json.JSONDecodeError, AttributeError):
-                pass
+            if pr_ref and run.get("prettyref") == pr_ref:
+                return run
         elif run.get("event") == "push":
             if run.get("prettyref") == branch:
                 return run
@@ -259,24 +253,27 @@ def _open_issue_prs() -> list[dict]:
 
 def _latest_ci_run_for_pr(pr_number: int) -> dict | None:
     """Return the latest CI run triggered by a pull_request event for the given PR number."""
-    data = _tea_get(f"repos/{REPO}/actions/runs?event=pull_request&limit=50")
-    runs = (data or {}).get("workflow_runs", [])
-    for run in runs:
-        try:
-            payload = json.loads(run.get("event_payload", "{}"))
-            if payload.get("pull_request", {}).get("number") == pr_number:
-                return run
-        except (json.JSONDecodeError, AttributeError):
-            pass
+    pr_ref = f"#{pr_number}"
+    for run in _fgj_run_list(limit=50):
+        if run.get("event") == "pull_request" and run.get("prettyref") == pr_ref:
+            return run
     return None
 
 
 def _get_issue_labels(issue: int) -> list[str]:
     """Return label names for an issue."""
-    data = _tea_get(f"repos/{REPO}/issues/{issue}")
-    if not data:
+    result = subprocess.run(
+        ["fgj", "--hostname", "codeberg.org", "issue", "view", str(issue),
+         "--repo", REPO, "--json"],
+        capture_output=True, text=True,
+    )
+    if result.returncode != 0 or not result.stdout.strip():
         return []
-    return [lbl["name"] for lbl in data.get("labels", [])]
+    try:
+        data = json.loads(result.stdout)
+    except json.JSONDecodeError:
+        return []
+    return [lbl["name"] for lbl in data.get("issue", {}).get("labels", [])]
 
 
 def _merge_pr(pr_number: int) -> None:
@@ -292,8 +289,18 @@ def _handle_pr_still_open_after_merge(pr_number: int, branch: str, issue_num: in
       "merged"         — PR closed after a retry
       "fallback"       — all options exhausted; caller should set State/Question
     """
-    pr_data = _tea_get(f"repos/{REPO}/pulls/{pr_number}")
-    mergeable = (pr_data or {}).get("mergeable")
+    result = subprocess.run(
+        ["fgj", "--hostname", "codeberg.org", "pr", "view", str(pr_number),
+         "--repo", REPO, "--json"],
+        capture_output=True, text=True,
+    )
+    pr_data: dict = {}
+    if result.returncode == 0 and result.stdout.strip():
+        try:
+            pr_data = json.loads(result.stdout)
+        except json.JSONDecodeError:
+            pass
+    mergeable = pr_data.get("mergeable")
 
     if mergeable is False:
         prompt = (
@@ -836,9 +843,8 @@ def _run_loop() -> int:
         # spawning another agent, check whether any CI run is currently in
         # progress (the branch run) and wait if so.
         if ci_run_id_at_start is not None and run["id"] == ci_run_id_at_start:
-            check = _tea_get(f"repos/{REPO}/actions/runs?limit=5")
             in_flight = [
-                r for r in (check or {}).get("workflow_runs", [])
+                r for r in _fgj_run_list(limit=5)
                 if r.get("status") == "running"
             ]
             if in_flight: