feat(create-readme): support Forgejo contents API

.opencode/tools/create-readme.ts

@@ -296,6 +296,46 @@ export default tool({
         })
 
         if (args.repo) {
+          const content64 = Buffer.from(content, "utf-8").toString("base64")
+          if (process.env.FORGEJO_URL) {
+            const base = process.env.FORGEJO_URL
+            const token = process.env.FORGEJO_TOKEN
+            const headers: Record<string, string> = {
+              Authorization: `token ${token}`,
+              Accept: "application/json",
+            }
+            let sha: string | undefined
+            try {
+              const getRes = await fetch(`${base}/api/v1/repos/${args.repo}/contents/README.md`, { headers })
+              if (getRes.status === 200) {
+                sha = (await getRes.json()).sha
+              } else if (getRes.status !== 404) {
+                const text = await getRes.text()
+                return `⚠️ create-readme failed: Forgejo GET README.md → HTTP ${getRes.status}: ${text}`
+              }
+            } catch (e) {
+              return `⚠️ create-readme failed: Forgejo GET failed: ${e instanceof Error ? e.message : String(e)}`
+            }
+            const putBody: Record<string, string> = {
+              content: content64,
+              message: "docs: update README",
+            }
+            if (sha) putBody.sha = sha
+            try {
+              const putRes = await fetch(`${base}/api/v1/repos/${args.repo}/contents/README.md`, {
+                method: "PUT",
+                headers: { ...headers, "Content-Type": "application/json" },
+                body: JSON.stringify(putBody),
+              })
+              if (!putRes.ok) {
+                const text = await putRes.text()
+                return `⚠️ create-readme failed: Forgejo PUT README.md → HTTP ${putRes.status}: ${text}`
+              }
+            } catch (e) {
+              return `⚠️ create-readme failed: Forgejo PUT failed: ${e instanceof Error ? e.message : String(e)}`
+            }
+            return `README.md updated in ${args.repo} via Forgejo API`
+          }
           const getRes = spawnSync(
             "gh",
             ["api", `repos/${args.repo}/contents/README.md`],
@@ -309,7 +349,6 @@ export default tool({
               sha = undefined
             }
           }
-          const content64 = Buffer.from(content, "utf-8").toString("base64")
           const putArgs = [
             "api",
             "-X",