Detect GitHub issue/PR URL in composer search

Pasting a GitHub issue or pull request URL into the composer's
issue/PR picker now searches by the number from the URL instead
of treating the full URL as a keyword that returns no matches.

packages/server/src/services/github-service.test.ts

@@ -1698,6 +1698,44 @@ describe("GitHubService", () => {
     ]);
   });
 
+  it("treats a GitHub issue or PR URL as a search for that number", async () => {
+    const runner = createRunner([issueJson("Issue title"), searchPullRequestJson("PR title")]);
+    const service = createGitHubService({
+      runner: runner.runner,
+      resolveGhPath: async () => "/usr/bin/gh",
+      now: () => 100,
+    });
+
+    await service.searchIssuesAndPrs({
+      cwd: "/repo",
+      query: "https://github.com/getpaseo/paseo/pull/793",
+      limit: 5,
+    });
+
+    expect(runner.calls.map((call) => call.args)).toEqual([
+      [
+        "issue",
+        "list",
+        "--search",
+        "793",
+        "--json",
+        "number,title,url,state,body,labels,updatedAt",
+        "--limit",
+        "5",
+      ],
+      [
+        "pr",
+        "list",
+        "--search",
+        "793",
+        "--json",
+        "number,title,url,state,body,labels,baseRefName,headRefName,updatedAt",
+        "--limit",
+        "5",
+      ],
+    ]);
+  });
+
   it("searches only GitHub PRs when the search kinds request excludes issues", async () => {
     const runner = createRunner([searchPullRequestJson("PR title")]);
     const service = createGitHubService({

packages/server/src/services/github-service.ts

@@ -933,11 +933,12 @@ export function createGitHubService(options: CreateGitHubServiceOptions = {}): G
       const readOptions: GitHubReadOptions = input.force
         ? { force: true, reason: input.reason }
         : { force: false, reason: input.reason };
+      const query = normalizeGitHubSearchQuery(input.query);
       const [issuesResult, prsResult] = await Promise.allSettled([
         shouldFetchIssues
           ? this.listIssues({
               cwd: input.cwd,
-              query: input.query,
+              query,
               limit: input.limit,
               ...readOptions,
             })
@@ -945,7 +946,7 @@ export function createGitHubService(options: CreateGitHubServiceOptions = {}): G
         shouldFetchPullRequests
           ? this.listPullRequests({
               cwd: input.cwd,
-              query: input.query,
+              query,
               limit: input.limit,
               ...readOptions,
             })
@@ -1171,6 +1172,15 @@ async function runGhCommand(
   });
 }
 
+const GITHUB_ISSUE_OR_PR_URL_PATTERN =
+  /^https?:\/\/github\.com\/[^/\s]+\/[^/\s]+\/(?:pull|issues)\/(\d+)(?:[/?#].*)?$/i;
+
+function normalizeGitHubSearchQuery(query: string): string {
+  const trimmed = query.trim();
+  const match = trimmed.match(GITHUB_ISSUE_OR_PR_URL_PATTERN);
+  return match ? match[1] : query;
+}
+
 function buildCacheKey(params: { cwd: string; method: string; args: unknown }): string {
   return `${params.cwd}:${params.method}:${stableStringify(params.args)}`;
 }