ci: fetch github usernames via API for release notes

The previous hardcoded AUTHOR_MAP was incomplete and caused missing authors
in the generated release notes. The config now attempts to fetch actual
GitHub usernames associated with commit SHAs using the GitHub API,
falling back to local git log author names if the API request fails.

release.config.js

@@ -4,11 +4,6 @@ const { spawnSync } = require("child_process");
 
 const DOCKER_IMAGE = "ghcr.io/bookorbit/bookorbit";
 
-// Maps local git author names to GitHub usernames for @-mentions in release notes.
-const AUTHOR_MAP = {
-  neon: "neonsolstice",
-};
-
 const TYPES = [
   { type: "feat", section: "Features" },
   { type: "fix", section: "Bug Fixes" },
@@ -94,19 +89,50 @@ const mainTemplate = [
 // for the commitPartial.
 function finalizeContext(ctx) {
   try {
+    const shaToGithubUser = new Map();
+
+    try {
+      const ghToken = process.env.GITHUB_TOKEN || process.env.GH_TOKEN;
+      if (ghToken && ctx.owner && ctx.repository) {
+        const curlResult = spawnSync(
+          "curl",
+          [
+            "-s",
+            "-H", `Authorization: Bearer ${ghToken}`,
+            "-H", "X-GitHub-Api-Version: 2022-11-28",
+            `https://api.github.com/repos/${ctx.owner}/${ctx.repository}/commits?per_page=100`
+          ],
+          { encoding: "utf8" }
+        );
+        if (curlResult.status === 0) {
+          const apiCommits = JSON.parse(curlResult.stdout);
+          if (Array.isArray(apiCommits)) {
+            for (const c of apiCommits) {
+              if (c.sha && c.author && c.author.login) {
+                shaToGithubUser.set(c.sha, c.author.login);
+              }
+            }
+          }
+        }
+      }
+    } catch (e) {
+      // Ignore API errors, fall back to local git log
+    }
+
     const result = spawnSync("git", ["log", "--format=%H %aN", "--max-count=500"], {
       encoding: "utf8",
       cwd: process.cwd(),
     });
 
-    const shaToGithubUser = new Map();
     if (result.status === 0) {
       for (const line of result.stdout.split("\n").filter(Boolean)) {
         const spaceIdx = line.indexOf(" ");
         const hash = line.substring(0, spaceIdx);
         const authorName = line.substring(spaceIdx + 1).trim();
         if (!authorName || /\[bot\]/i.test(authorName)) continue;
-        shaToGithubUser.set(hash, AUTHOR_MAP[authorName] ?? authorName);
+        if (!shaToGithubUser.has(hash)) {
+          shaToGithubUser.set(hash, authorName);
+        }
       }
     }