feat(ui): issues card

frontend/src/components/git/ForgejoIssueDetailDialog.tsx

@@ -0,0 +1,290 @@
+"use client";
+
+import { useEffect, useMemo, useState } from "react";
+
+import { ExternalLink, Loader2 } from "lucide-react";
+
+import {
+  Dialog,
+  DialogContent,
+  DialogDescription,
+  DialogHeader,
+  DialogTitle,
+} from "@/components/ui/dialog";
+import { Badge } from "@/components/ui/badge";
+import { Button } from "@/components/ui/button";
+import { Tabs, TabsContent, TabsList, TabsTrigger } from "@/components/ui/tabs";
+import { Markdown } from "@/components/atoms/Markdown";
+import {
+  getForgejoIssue,
+  type ForgejoIssue,
+  type ForgejoIssueDetail,
+} from "@/lib/api-forgejo";
+
+type ForgejoIssueDetailDialogProps = {
+  issue: ForgejoIssue | null;
+  repositoryName: string;
+  open: boolean;
+  onOpenChange: (open: boolean) => void;
+};
+
+const formatDateTime = (value: string | null | undefined): string => {
+  if (!value) return "—";
+  const date = new Date(value);
+  if (Number.isNaN(date.getTime())) return value;
+  return date.toLocaleString(undefined, {
+    dateStyle: "medium",
+    timeStyle: "short",
+  });
+};
+
+const objectList = (value: unknown): Record<string, unknown>[] => {
+  if (!Array.isArray(value)) return [];
+  return value.filter(
+    (item): item is Record<string, unknown> =>
+      typeof item === "object" && item !== null,
+  );
+};
+
+const asString = (value: unknown): string | null =>
+  typeof value === "string" && value.trim() ? value : null;
+
+export function ForgejoIssueDetailDialog({
+  issue,
+  repositoryName,
+  open,
+  onOpenChange,
+}: ForgejoIssueDetailDialogProps) {
+  const [detail, setDetail] = useState<ForgejoIssueDetail | null>(null);
+  const [isLoading, setIsLoading] = useState(false);
+  const [error, setError] = useState<string | null>(null);
+
+  useEffect(() => {
+    if (!open || !issue) return;
+    let cancelled = false;
+    (async () => {
+      setIsLoading(true);
+      setError(null);
+      try {
+        const result = await getForgejoIssue(issue.id);
+        if (!cancelled) {
+          setDetail(result);
+        }
+      } catch (err) {
+        if (!cancelled) {
+          setError(
+            err instanceof Error
+              ? err.message
+              : "Could not load issue details from Pipeline.",
+          );
+        }
+      } finally {
+        if (!cancelled) {
+          setIsLoading(false);
+        }
+      }
+    })();
+    return () => {
+      cancelled = true;
+    };
+  }, [issue, open]);
+
+  const comments = useMemo(
+    () => objectList(detail?.forgejo_comments_payload),
+    [detail?.forgejo_comments_payload],
+  );
+  const timeline = useMemo(
+    () => objectList(detail?.forgejo_timeline_payload),
+    [detail?.forgejo_timeline_payload],
+  );
+  const reactions = useMemo(
+    () => objectList(detail?.forgejo_reactions_payload),
+    [detail?.forgejo_reactions_payload],
+  );
+
+  if (!issue) return null;
+
+  const active = detail ?? issue;
+  const body = detail?.body ?? issue.body ?? issue.body_preview ?? "";
+  const stateVariant = active.state === "open" ? "success" : "default";
+
+  return (
+    <Dialog open={open} onOpenChange={onOpenChange}>
+      <DialogContent className="max-w-4xl">
+        <DialogHeader>
+          <div className="flex flex-wrap items-start justify-between gap-3">
+            <div className="space-y-2">
+              <DialogTitle className="break-words text-base sm:text-lg">
+                {active.title}
+              </DialogTitle>
+              <DialogDescription className="flex flex-wrap items-center gap-2 text-xs sm:text-sm">
+                <span className="font-medium text-strong">
+                  {repositoryName}
+                </span>
+                <span className="font-mono">
+                  #{active.forgejo_issue_number}
+                </span>
+                <Badge variant={stateVariant}>{active.state}</Badge>
+                <span>Opened {formatDateTime(active.forgejo_created_at)}</span>
+                <span>Updated {formatDateTime(active.forgejo_updated_at)}</span>
+              </DialogDescription>
+            </div>
+            <a
+              href={active.html_url}
+              target="_blank"
+              rel="noopener noreferrer"
+              className="inline-flex h-9 items-center gap-2 rounded-xl border border-[color:var(--border)] px-3 text-xs font-semibold text-muted transition hover:border-[color:var(--accent)] hover:text-[color:var(--accent)]"
+            >
+              Open in Forgejo
+              <ExternalLink className="h-3.5 w-3.5" />
+            </a>
+          </div>
+        </DialogHeader>
+
+        {isLoading ? (
+          <div className="flex items-center gap-2 rounded-xl border border-[color:var(--border)] bg-[color:var(--surface-muted)] p-4 text-sm text-muted">
+            <Loader2 className="h-4 w-4 animate-spin text-[color:var(--accent)]" />
+            Loading issue details…
+          </div>
+        ) : null}
+
+        {error ? (
+          <div className="rounded-xl border border-[color:rgba(248,113,113,0.35)] bg-[color:rgba(248,113,113,0.08)] p-3 text-sm text-[color:var(--danger)]">
+            {error}
+          </div>
+        ) : null}
+
+        <Tabs defaultValue="overview">
+          <TabsList>
+            <TabsTrigger value="overview">Overview</TabsTrigger>
+            <TabsTrigger value="comments">
+              Comments ({comments.length})
+            </TabsTrigger>
+            <TabsTrigger value="timeline">
+              Timeline ({timeline.length})
+            </TabsTrigger>
+            <TabsTrigger value="reactions">
+              Reactions ({reactions.length})
+            </TabsTrigger>
+          </TabsList>
+
+          <TabsContent value="overview">
+            <div className="rounded-xl border border-[color:var(--border)] bg-[color:var(--surface-muted)] p-4">
+              {body ? (
+                <Markdown content={body} variant="comment" />
+              ) : (
+                <p className="text-sm text-muted">No issue body provided.</p>
+              )}
+            </div>
+          </TabsContent>
+
+          <TabsContent value="comments">
+            <div className="space-y-3">
+              {comments.length === 0 ? (
+                <div className="rounded-xl border border-[color:var(--border)] bg-[color:var(--surface-muted)] p-4 text-sm text-muted">
+                  No comments on this issue.
+                </div>
+              ) : (
+                comments.map((comment, idx) => {
+                  const login =
+                    asString(
+                      comment.user &&
+                        (comment.user as Record<string, unknown>).login,
+                    ) ?? "Unknown";
+                  const bodyText = asString(comment.body) ?? "";
+                  return (
+                    <article
+                      key={String(comment.id ?? idx)}
+                      className="rounded-xl border border-[color:var(--border)] bg-[color:var(--surface-muted)] p-4"
+                    >
+                      <div className="mb-2 flex flex-wrap items-center gap-2 text-xs text-muted">
+                        <span className="font-medium text-strong">{login}</span>
+                        <span>
+                          {formatDateTime(asString(comment.created_at))}
+                        </span>
+                      </div>
+                      {bodyText ? (
+                        <Markdown content={bodyText} variant="comment" />
+                      ) : (
+                        <p className="text-sm text-muted">No comment text.</p>
+                      )}
+                    </article>
+                  );
+                })
+              )}
+            </div>
+          </TabsContent>
+
+          <TabsContent value="timeline">
+            <div className="space-y-2">
+              {timeline.length === 0 ? (
+                <div className="rounded-xl border border-[color:var(--border)] bg-[color:var(--surface-muted)] p-4 text-sm text-muted">
+                  No timeline events found.
+                </div>
+              ) : (
+                timeline.map((event, idx) => {
+                  const label =
+                    asString(event.type) ??
+                    asString(event.action) ??
+                    asString(event.event) ??
+                    "event";
+                  const actor =
+                    asString(
+                      event.user &&
+                        (event.user as Record<string, unknown>).login,
+                    ) ?? "system";
+                  return (
+                    <div
+                      key={String(event.id ?? idx)}
+                      className="rounded-lg border border-[color:var(--border)] bg-[color:var(--surface-muted)] px-3 py-2 text-sm"
+                    >
+                      <span className="font-medium text-strong">{label}</span>{" "}
+                      <span className="text-muted">by {actor}</span>
+                      <span className="ml-2 text-xs text-muted">
+                        {formatDateTime(asString(event.created_at))}
+                      </span>
+                    </div>
+                  );
+                })
+              )}
+            </div>
+          </TabsContent>
+
+          <TabsContent value="reactions">
+            <div className="space-y-2">
+              {reactions.length === 0 ? (
+                <div className="rounded-xl border border-[color:var(--border)] bg-[color:var(--surface-muted)] p-4 text-sm text-muted">
+                  No reactions on this issue.
+                </div>
+              ) : (
+                reactions.map((reaction, idx) => {
+                  const content = asString(reaction.content) ?? "reaction";
+                  const login =
+                    asString(
+                      reaction.user &&
+                        (reaction.user as Record<string, unknown>).login,
+                    ) ?? "Unknown";
+                  return (
+                    <div
+                      key={String(reaction.id ?? idx)}
+                      className="flex items-center justify-between rounded-lg border border-[color:var(--border)] bg-[color:var(--surface-muted)] px-3 py-2 text-sm"
+                    >
+                      <span className="font-medium text-strong">{content}</span>
+                      <span className="text-xs text-muted">{login}</span>
+                    </div>
+                  );
+                })
+              )}
+            </div>
+          </TabsContent>
+        </Tabs>
+
+        <div className="flex justify-end">
+          <Button variant="outline" onClick={() => onOpenChange(false)}>
+            Close
+          </Button>
+        </div>
+      </DialogContent>
+    </Dialog>
+  );
+}

frontend/src/components/git/ForgejoIssuesTable.tsx

@@ -16,6 +16,7 @@ import { Badge } from "@/components/ui/badge";
 import type { ForgejoIssue, ForgejoIssueLabel } from "@/lib/api-forgejo";
 import type { ForgejoRepository } from "@/lib/api-forgejo";
 import { CloseForgejoIssueDialog } from "@/components/git/CloseForgejoIssueDialog";
+import { ForgejoIssueDetailDialog } from "@/components/git/ForgejoIssueDetailDialog";
 import { cn } from "@/lib/utils";
 
 /** Normalize a Forgejo label color to a valid 6-char hex string or null. */
@@ -195,6 +196,8 @@ export function ForgejoIssuesTable({
 }: ForgejoIssuesTableProps) {
   const [issueToClose, setIssueToClose] = useState<ForgejoIssue | null>(null);
   const [isCloseDialogOpen, setIsCloseDialogOpen] = useState(false);
+  const [issueToView, setIssueToView] = useState<ForgejoIssue | null>(null);
+  const [isIssueDetailOpen, setIsIssueDetailOpen] = useState(false);
 
   const repositoryNameById = useMemo(() => {
     const map = new Map<string, string>();
@@ -282,15 +285,17 @@ export function ForgejoIssuesTable({
 
                   <div className="min-w-0 flex-1">
                     <div className="flex flex-wrap items-center gap-x-2 gap-y-1">
-                      <a
-                        href={issue.html_url}
-                        target="_blank"
-                        rel="noopener noreferrer"
-                        className="min-w-0 break-words text-sm font-semibold text-strong hover:text-[color:var(--accent)] hover:underline"
-                        title={issue.title}
+                      <button
+                        type="button"
+                        className="min-w-0 break-words text-left text-sm font-semibold text-strong hover:text-[color:var(--accent)] hover:underline"
+                        title={`Open ${repositoryName}#${issue.forgejo_issue_number} details`}
+                        onClick={() => {
+                          setIssueToView(issue);
+                          setIsIssueDetailOpen(true);
+                        }}
                       >
                         {issue.title}
-                      </a>
+                      </button>
                       {visibleLabels.map((label, i) => (
                         <LabelChip key={`${label.name}-${i}`} label={label} />
                       ))}
@@ -377,6 +382,22 @@ export function ForgejoIssuesTable({
         }}
         onCloseSuccess={onRefresh}
       />
+      <ForgejoIssueDetailDialog
+        issue={issueToView}
+        repositoryName={
+          issueToView
+            ? (repositoryNameById.get(issueToView.repository_id) ??
+              issueToView.repository_id)
+            : "Repository"
+        }
+        open={isIssueDetailOpen}
+        onOpenChange={(nextOpen) => {
+          setIsIssueDetailOpen(nextOpen);
+          if (!nextOpen) {
+            setIssueToView(null);
+          }
+        }}
+      />
     </>
   );
 }

frontend/src/lib/api-forgejo.ts

@@ -327,6 +327,13 @@ export interface ForgejoIssue {
   updated_at: string;
 }
 
+export interface ForgejoIssueDetail extends ForgejoIssue {
+  forgejo_payload?: Record<string, unknown> | null;
+  forgejo_comments_payload?: Record<string, unknown>[];
+  forgejo_timeline_payload?: Record<string, unknown>[];
+  forgejo_reactions_payload?: Record<string, unknown>[];
+}
+
 export interface ForgejoIssueListResponse {
   items: ForgejoIssue[];
   total: number;
@@ -358,8 +365,10 @@ export async function getForgejoIssues(params?: {
   );
 }
 
-export async function getForgejoIssue(issueId: string): Promise<ForgejoIssue> {
-  return fetchJson<ForgejoIssue>(`/api/v1/forgejo/issues/${issueId}`);
+export async function getForgejoIssue(
+  issueId: string,
+): Promise<ForgejoIssueDetail> {
+  return fetchJson<ForgejoIssueDetail>(`/api/v1/forgejo/issues/${issueId}`);
 }
 
 export async function closeForgejoIssue(