diff --git a/main.ts b/main.ts
--- a/main.ts
+++ b/main.ts
@@ -73,7 +73,9 @@
       const now = Temporal.Now.zonedDateTimeISO(TIMEZONE);
       if (Temporal.ZonedDateTime.compare(now, nextDigest) >= 0) {
         nextDigest = nextDigestAfter(now);
-        console.log(`sending weekly digest; next at ${nextDigest.toString({ timeZoneName: "never" })}`);
+        console.log(
+          `sending weekly digest; next at ${nextDigest.toString({ timeZoneName: "never" })}`,
+        );
         await notifyAll(channels, (ch) => ch.notifyMany(result.events));
       }
     } catch (err) {
@@ -102,7 +104,9 @@
 
   const event = slug ? events.find((e) => e.slug === slug) : events[0]!;
   if (!event) {
-    throw new Error(`event with slug "${slug}" not found; available slugs: ${events.map((e) => e.slug).join(", ")}`);
+    throw new Error(
+      `event with slug "${slug}" not found; available slugs: ${events.map((e) => e.slug).join(", ")}`,
+    );
   }
   for (const ch of channels) await ch.notifyOne(event);
 }
diff --git a/package-lock.json b/package-lock.json
--- a/package-lock.json
+++ b/package-lock.json
@@ -7,7 +7,707 @@
       "name": "devict-events",
       "devDependencies": {
         "@types/node": "^25.9.1",
+        "oxfmt": "^0.54.0",
+        "oxlint": "^1.69.0",
         "typescript": "^6.0.3"
+      },
+      "engines": {
+        "node": ">=24.0.0",
+        "npm": ">=11.0.0"
+      }
+    },
+    "node_modules/@oxfmt/binding-android-arm-eabi": {
+      "version": "0.54.0",
+      "resolved": "https://registry.npmjs.org/@oxfmt/binding-android-arm-eabi/-/binding-android-arm-eabi-0.54.0.tgz",
+      "integrity": "sha512-NAtpl/SiaeU103e7/OmZw0MvUnsUUopW7hEm/ecegJg7YM0skQaA0IXEZoyTV6NUdiNPupdIUreRqUZTShbn/g==",
+      "cpu": [
+        "arm"
+      ],
+      "dev": true,
+      "license": "MIT",
+      "optional": true,
+      "os": [
+        "android"
+      ],
+      "engines": {
+        "node": "^20.19.0 || >=22.12.0"
+      }
+    },
+    "node_modules/@oxfmt/binding-android-arm64": {
+      "version": "0.54.0",
+      "resolved": "https://registry.npmjs.org/@oxfmt/binding-android-arm64/-/binding-android-arm64-0.54.0.tgz",
+      "integrity": "sha512-B4VZfBUlKK1rmMChsssNZbkZjE8+FzG3avMjGgMDwbGxXRoXkoeXiAZ+78Oa+eyDPHvDCiUb4zH/vmCOUSafLQ==",
+      "cpu": [
+        "arm64"
+      ],
+      "dev": true,
+      "license": "MIT",
+      "optional": true,
+      "os": [
+        "android"
+      ],
+      "engines": {
+        "node": "^20.19.0 || >=22.12.0"
+      }
+    },
+    "node_modules/@oxfmt/binding-darwin-arm64": {
+      "version": "0.54.0",
+      "resolved": "https://registry.npmjs.org/@oxfmt/binding-darwin-arm64/-/binding-darwin-arm64-0.54.0.tgz",
+      "integrity": "sha512-i02vF75b+ePsQP3tHqSxVYI5S6b8X/xqdPu7/mDHXtpgXLTYXi3jJmfHU0j+dnZZDKaYTx/ioCK7QYJmtiJR2g==",
+      "cpu": [
+        "arm64"
+      ],
+      "dev": true,
+      "license": "MIT",
+      "optional": true,
+      "os": [
+        "darwin"
+      ],
+      "engines": {
+        "node": "^20.19.0 || >=22.12.0"
+      }
+    },
+    "node_modules/@oxfmt/binding-darwin-x64": {
+      "version": "0.54.0",
+      "resolved": "https://registry.npmjs.org/@oxfmt/binding-darwin-x64/-/binding-darwin-x64-0.54.0.tgz",
+      "integrity": "sha512-8VMFvGvooXj7mswkbrhdVZ2/sgiDaBzWpkkbtO+qGDLV4EfJd67nQadHkQC0ZNbaWA9ajXfqI6i7PZLIeDzxEQ==",
+      "cpu": [
+        "x64"
+      ],
+      "dev": true,
+      "license": "MIT",
+      "optional": true,
+      "os": [
+        "darwin"
+      ],
+      "engines": {
+        "node": "^20.19.0 || >=22.12.0"
+      }
+    },
+    "node_modules/@oxfmt/binding-freebsd-x64": {
+      "version": "0.54.0",
+      "resolved": "https://registry.npmjs.org/@oxfmt/binding-freebsd-x64/-/binding-freebsd-x64-0.54.0.tgz",
+      "integrity": "sha512-0cRHnp43WN1Jrc5s0BdbdKgR1XirdvHy7TAFi3JEsoEVQVJxTXMbpVd76sxXlgRswNMDhVFSJw+y7Eb8mEavFQ==",
+      "cpu": [
+        "x64"
+      ],
+      "dev": true,
+      "license": "MIT",
+      "optional": true,
+      "os": [
+        "freebsd"
+      ],
+      "engines": {
+        "node": "^20.19.0 || >=22.12.0"
+      }
+    },
+    "node_modules/@oxfmt/binding-linux-arm-gnueabihf": {
+      "version": "0.54.0",
+      "resolved": "https://registry.npmjs.org/@oxfmt/binding-linux-arm-gnueabihf/-/binding-linux-arm-gnueabihf-0.54.0.tgz",
+      "integrity": "sha512-JyQAk3hK/OEtup7Rw6kZwfdzbKqTVD5jXXb8Xpfay29suwZyfBDMVW/bj4RqEPySYWc6zCp198pOluf8n5uYzg==",
+      "cpu": [
+        "arm"
+      ],
+      "dev": true,
+      "license": "MIT",
+      "optional": true,
+      "os": [
+        "linux"
+      ],
+      "engines": {
+        "node": "^20.19.0 || >=22.12.0"
+      }
+    },
+    "node_modules/@oxfmt/binding-linux-arm-musleabihf": {
+      "version": "0.54.0",
+      "resolved": "https://registry.npmjs.org/@oxfmt/binding-linux-arm-musleabihf/-/binding-linux-arm-musleabihf-0.54.0.tgz",
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+      "cpu": [
+        "arm"
+      ],
+      "dev": true,
+      "license": "MIT",
+      "optional": true,
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+      "engines": {
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+      "cpu": [
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+      ],
+      "dev": true,
+      "libc": [
+        "glibc"
+      ],
+      "license": "MIT",
+      "optional": true,
+      "os": [
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+      ],
+      "engines": {
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+        "arm64"
+      ],
+      "dev": true,
+      "libc": [
+        "musl"
+      ],
+      "license": "MIT",
+      "optional": true,
+      "os": [
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+      ],
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+    "node_modules/@oxfmt/binding-linux-ppc64-gnu": {
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+        "ppc64"
+      ],
+      "dev": true,
+      "libc": [
+        "glibc"
+      ],
+      "license": "MIT",
+      "optional": true,
+      "os": [
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+      ],
+      "engines": {
+        "node": "^20.19.0 || >=22.12.0"
+      }
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+    "node_modules/@oxfmt/binding-linux-riscv64-gnu": {
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+      "optional": true,
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+      "integrity": "sha512-xEPpNppTfN1l/nM7gYSf9iocscu/as+p/7vxkLeLEKnYU+09Dm+5V6IhDYDh+Uz6FajEupWwCLt5SOG0y1PCKg==",
+      "cpu": [
+        "arm64"
+      ],
+      "dev": true,
+      "libc": [
+        "musl"
+      ],
+      "license": "MIT",
+      "optional": true,
+      "os": [
+        "linux"
+      ],
+      "engines": {
+        "node": "^20.19.0 || >=22.12.0"
+      }
+    },
+    "node_modules/@oxlint/binding-linux-ppc64-gnu": {
+      "version": "1.69.0",
+      "resolved": "https://registry.npmjs.org/@oxlint/binding-linux-ppc64-gnu/-/binding-linux-ppc64-gnu-1.69.0.tgz",
+      "integrity": "sha512-Ug0+eU7HJBlek+SjklYH62IlOMirEJsdxpihH0kSqX0XdrDD4NdHpQc10fK1JC35yn6KrrcN+uYzlHD38XAf8Q==",
+      "cpu": [
+        "ppc64"
+      ],
+      "dev": true,
+      "libc": [
+        "glibc"
+      ],
+      "license": "MIT",
+      "optional": true,
+      "os": [
+        "linux"
+      ],
+      "engines": {
+        "node": "^20.19.0 || >=22.12.0"
+      }
+    },
+    "node_modules/@oxlint/binding-linux-riscv64-gnu": {
+      "version": "1.69.0",
+      "resolved": "https://registry.npmjs.org/@oxlint/binding-linux-riscv64-gnu/-/binding-linux-riscv64-gnu-1.69.0.tgz",
+      "integrity": "sha512-iEyI3GIg0l/s3G4qy2TlaaWKdzj4PJJStwtlocpDTC00PY9hZueotf6OKUj9+yfQh0lrpBW/pLMgTztbAHKJEg==",
+      "cpu": [
+        "riscv64"
+      ],
+      "dev": true,
+      "libc": [
+        "glibc"
+      ],
+      "license": "MIT",
+      "optional": true,
+      "os": [
+        "linux"
+      ],
+      "engines": {
+        "node": "^20.19.0 || >=22.12.0"
+      }
+    },
+    "node_modules/@oxlint/binding-linux-riscv64-musl": {
+      "version": "1.69.0",
+      "resolved": "https://registry.npmjs.org/@oxlint/binding-linux-riscv64-musl/-/binding-linux-riscv64-musl-1.69.0.tgz",
+      "integrity": "sha512-NjHjpiI4WIKSMwuoJSZi5VToPeoYOS1FR52HLIDG6lidMdqquusgtODb4iLk0+lb1q3Z0nv2/aPRcC/olmpQGg==",
+      "cpu": [
+        "riscv64"
+      ],
+      "dev": true,
+      "libc": [
+        "musl"
+      ],
+      "license": "MIT",
+      "optional": true,
+      "os": [
+        "linux"
+      ],
+      "engines": {
+        "node": "^20.19.0 || >=22.12.0"
+      }
+    },
+    "node_modules/@oxlint/binding-linux-s390x-gnu": {
+      "version": "1.69.0",
+      "resolved": "https://registry.npmjs.org/@oxlint/binding-linux-s390x-gnu/-/binding-linux-s390x-gnu-1.69.0.tgz",
+      "integrity": "sha512-Ai/prDewoItkDXbp38gwGZi41DycZbUTZJ3UidwoHgQC0/DaqC2TGdtBTQLJ6hSD+SAxASzh8+/eSBPmxfOacA==",
+      "cpu": [
+        "s390x"
+      ],
+      "dev": true,
+      "libc": [
+        "glibc"
+      ],
+      "license": "MIT",
+      "optional": true,
+      "os": [
+        "linux"
+      ],
+      "engines": {
+        "node": "^20.19.0 || >=22.12.0"
+      }
+    },
+    "node_modules/@oxlint/binding-linux-x64-gnu": {
+      "version": "1.69.0",
+      "resolved": "https://registry.npmjs.org/@oxlint/binding-linux-x64-gnu/-/binding-linux-x64-gnu-1.69.0.tgz",
+      "integrity": "sha512-Gt3KHgp46mRKz4sJeaASmKvD8ayXookRw07RMf+NowhEztGGDZ7VrXpoW96XuKJLjFukWizOFVNjmYb/u7caNQ==",
+      "cpu": [
+        "x64"
+      ],
+      "dev": true,
+      "libc": [
+        "glibc"
+      ],
+      "license": "MIT",
+      "optional": true,
+      "os": [
+        "linux"
+      ],
+      "engines": {
+        "node": "^20.19.0 || >=22.12.0"
+      }
+    },
+    "node_modules/@oxlint/binding-linux-x64-musl": {
+      "version": "1.69.0",
+      "resolved": "https://registry.npmjs.org/@oxlint/binding-linux-x64-musl/-/binding-linux-x64-musl-1.69.0.tgz",
+      "integrity": "sha512-7tQhJ2+p/oHv1zcfnjYI7YVzC/7iBaVOfIvFYtxdJ5F45mWgEdrCyXZXZGfiLey5t/5JhOhsaMnnv1kAzckd7g==",
+      "cpu": [
+        "x64"
+      ],
+      "dev": true,
+      "libc": [
+        "musl"
+      ],
+      "license": "MIT",
+      "optional": true,
+      "os": [
+        "linux"
+      ],
+      "engines": {
+        "node": "^20.19.0 || >=22.12.0"
+      }
+    },
+    "node_modules/@oxlint/binding-openharmony-arm64": {
+      "version": "1.69.0",
+      "resolved": "https://registry.npmjs.org/@oxlint/binding-openharmony-arm64/-/binding-openharmony-arm64-1.69.0.tgz",
+      "integrity": "sha512-vmWz6TKp/3hfA4lksR0zHBv/6xuX1jhym6eqOjdH2DXsDDHZWcp2f0KG0VCAnlVbIrjk29G4wAWMXb/Hn1YobA==",
+      "cpu": [
+        "arm64"
+      ],
+      "dev": true,
+      "license": "MIT",
+      "optional": true,
+      "os": [
+        "openharmony"
+      ],
+      "engines": {
+        "node": "^20.19.0 || >=22.12.0"
+      }
+    },
+    "node_modules/@oxlint/binding-win32-arm64-msvc": {
+      "version": "1.69.0",
+      "resolved": "https://registry.npmjs.org/@oxlint/binding-win32-arm64-msvc/-/binding-win32-arm64-msvc-1.69.0.tgz",
+      "integrity": "sha512-9RExaLgmaw6IoIkU9cTpT71mLfI0xZ86iZH8x518LVsOkjquJMYqb9P7KpC8lgd1t0Dxs41p2pxynq4XR3Ttzw==",
+      "cpu": [
+        "arm64"
+      ],
+      "dev": true,
+      "license": "MIT",
+      "optional": true,
+      "os": [
+        "win32"
+      ],
+      "engines": {
+        "node": "^20.19.0 || >=22.12.0"
+      }
+    },
+    "node_modules/@oxlint/binding-win32-ia32-msvc": {
+      "version": "1.69.0",
+      "resolved": "https://registry.npmjs.org/@oxlint/binding-win32-ia32-msvc/-/binding-win32-ia32-msvc-1.69.0.tgz",
+      "integrity": "sha512-1907kRPF8/PrcIw1E7LMs9JbVrpgnt/MvFdss3an8oDkYNAACXzTntV3t3869ZZhMZxb2AzRGbz1pA/jdFatXA==",
+      "cpu": [
+        "ia32"
+      ],
+      "dev": true,
+      "license": "MIT",
+      "optional": true,
+      "os": [
+        "win32"
+      ],
+      "engines": {
+        "node": "^20.19.0 || >=22.12.0"
+      }
+    },
+    "node_modules/@oxlint/binding-win32-x64-msvc": {
+      "version": "1.69.0",
+      "resolved": "https://registry.npmjs.org/@oxlint/binding-win32-x64-msvc/-/binding-win32-x64-msvc-1.69.0.tgz",
+      "integrity": "sha512-w8SOXv3mT9Fi6jY8OXdXCfnvX/3KNLXGNr4HEz2TA7S4Mv/PYAOmpB8y/ge40mxvBMgGNaSaaDwZpAsQn7HtWA==",
+      "cpu": [
+        "x64"
+      ],
+      "dev": true,
+      "license": "MIT",
+      "optional": true,
+      "os": [
+        "win32"
+      ],
+      "engines": {
+        "node": "^20.19.0 || >=22.12.0"
       }
     },
     "node_modules/@types/node": {
@@ -18,6 +718,117 @@
       "license": "MIT",
       "dependencies": {
         "undici-types": ">=7.24.0 <7.24.7"
+      }
+    },
+    "node_modules/oxfmt": {
+      "version": "0.54.0",
+      "resolved": "https://registry.npmjs.org/oxfmt/-/oxfmt-0.54.0.tgz",
+      "integrity": "sha512-DjnMwn7smSLF+Mc2+pRItnuPftm/dkUFpY/d4+33y9TfKrsHZo8GLhmUg9BrOIUEy94Rlom1Q11N6vuhE+e0oQ==",
+      "dev": true,
+      "license": "MIT",
+      "dependencies": {
+        "tinypool": "2.1.0"
+      },
+      "bin": {
+        "oxfmt": "bin/oxfmt"
+      },
+      "engines": {
+        "node": "^20.19.0 || >=22.12.0"
+      },
+      "funding": {
+        "url": "https://github.com/sponsors/Boshen"
+      },
+      "optionalDependencies": {
+        "@oxfmt/binding-android-arm-eabi": "0.54.0",
+        "@oxfmt/binding-android-arm64": "0.54.0",
+        "@oxfmt/binding-darwin-arm64": "0.54.0",
+        "@oxfmt/binding-darwin-x64": "0.54.0",
+        "@oxfmt/binding-freebsd-x64": "0.54.0",
+        "@oxfmt/binding-linux-arm-gnueabihf": "0.54.0",
+        "@oxfmt/binding-linux-arm-musleabihf": "0.54.0",
+        "@oxfmt/binding-linux-arm64-gnu": "0.54.0",
+        "@oxfmt/binding-linux-arm64-musl": "0.54.0",
+        "@oxfmt/binding-linux-ppc64-gnu": "0.54.0",
+        "@oxfmt/binding-linux-riscv64-gnu": "0.54.0",
+        "@oxfmt/binding-linux-riscv64-musl": "0.54.0",
+        "@oxfmt/binding-linux-s390x-gnu": "0.54.0",
+        "@oxfmt/binding-linux-x64-gnu": "0.54.0",
+        "@oxfmt/binding-linux-x64-musl": "0.54.0",
+        "@oxfmt/binding-openharmony-arm64": "0.54.0",
+        "@oxfmt/binding-win32-arm64-msvc": "0.54.0",
+        "@oxfmt/binding-win32-ia32-msvc": "0.54.0",
+        "@oxfmt/binding-win32-x64-msvc": "0.54.0"
+      },
+      "peerDependencies": {
+        "svelte": "^5.0.0",
+        "vite-plus": "*"
+      },
+      "peerDependenciesMeta": {
+        "svelte": {
+          "optional": true
+        },
+        "vite-plus": {
+          "optional": true
+        }
+      }
+    },
+    "node_modules/oxlint": {
+      "version": "1.69.0",
+      "resolved": "https://registry.npmjs.org/oxlint/-/oxlint-1.69.0.tgz",
+      "integrity": "sha512-ypZkK/aDc5NQV8zIR6s2H2Tl3aNW8FmJ1m9+2qsaYuRenl8vgnHNCGwTHviWJdUQzglOlHFchgopdtGhSy17Rw==",
+      "dev": true,
+      "license": "MIT",
+      "bin": {
+        "oxlint": "bin/oxlint"
+      },
+      "engines": {
+        "node": "^20.19.0 || >=22.12.0"
+      },
+      "funding": {
+        "url": "https://github.com/sponsors/Boshen"
+      },
+      "optionalDependencies": {
+        "@oxlint/binding-android-arm-eabi": "1.69.0",
+        "@oxlint/binding-android-arm64": "1.69.0",
+        "@oxlint/binding-darwin-arm64": "1.69.0",
+        "@oxlint/binding-darwin-x64": "1.69.0",
+        "@oxlint/binding-freebsd-x64": "1.69.0",
+        "@oxlint/binding-linux-arm-gnueabihf": "1.69.0",
+        "@oxlint/binding-linux-arm-musleabihf": "1.69.0",
+        "@oxlint/binding-linux-arm64-gnu": "1.69.0",
+        "@oxlint/binding-linux-arm64-musl": "1.69.0",
+        "@oxlint/binding-linux-ppc64-gnu": "1.69.0",
+        "@oxlint/binding-linux-riscv64-gnu": "1.69.0",
+        "@oxlint/binding-linux-riscv64-musl": "1.69.0",
+        "@oxlint/binding-linux-s390x-gnu": "1.69.0",
+        "@oxlint/binding-linux-x64-gnu": "1.69.0",
+        "@oxlint/binding-linux-x64-musl": "1.69.0",
+        "@oxlint/binding-openharmony-arm64": "1.69.0",
+        "@oxlint/binding-win32-arm64-msvc": "1.69.0",
+        "@oxlint/binding-win32-ia32-msvc": "1.69.0",
+        "@oxlint/binding-win32-x64-msvc": "1.69.0"
+      },
+      "peerDependencies": {
+        "oxlint-tsgolint": ">=0.22.1",
+        "vite-plus": "*"
+      },
+      "peerDependenciesMeta": {
+        "oxlint-tsgolint": {
+          "optional": true
+        },
+        "vite-plus": {
+          "optional": true
+        }
+      }
+    },
+    "node_modules/tinypool": {
+      "version": "2.1.0",
+      "resolved": "https://registry.npmjs.org/tinypool/-/tinypool-2.1.0.tgz",
+      "integrity": "sha512-Pugqs6M0m7Lv1I7FtxN4aoyToKg1C4tu+/381vH35y8oENM/Ai7f7C4StcoK4/+BSw9ebcS8jRiVrORFKCALLw==",
+      "dev": true,
+      "license": "MIT",
+      "engines": {
+        "node": "^20.0.0 || >=22.0.0"
       }
     },
     "node_modules/typescript": {
diff --git a/package.json b/package.json
--- a/package.json
+++ b/package.json
@@ -1,19 +1,25 @@
 {
-  "private": true,
   "name": "devict-events",
+  "private": true,
   "type": "module",
-  "engines": {
-    "node": ">=24.0.0",
-    "npm": ">=11.0.0"
-  },
   "scripts": {
     "start": "node  main.ts",
     "once": "node  main.ts once",
     "test": "node --test",
-    "typecheck": "tsc"
+    "typecheck": "tsc",
+    "lint": "oxlint",
+    "lint:fix": "oxlint --fix",
+    "fmt": "oxfmt",
+    "fmt:check": "oxfmt --check"
   },
   "devDependencies": {
     "@types/node": "^25.9.1",
+    "oxfmt": "^0.54.0",
+    "oxlint": "^1.69.0",
     "typescript": "^6.0.3"
+  },
+  "engines": {
+    "node": ">=24.0.0",
+    "npm": ">=11.0.0"
   }
 }
diff --git a/tsconfig.json b/tsconfig.json
--- a/tsconfig.json
+++ b/tsconfig.json
@@ -8,17 +8,10 @@
     "rewriteRelativeImportExtensions": true,
     "erasableSyntaxOnly": true,
     "verbatimModuleSyntax": true,
-    "lib": [
-      "esnext"
-    ],
-    "types": [
-      "node"
-    ]
+    "lib": ["esnext"],
+    "types": ["node"]
   },
   // atproto/ and openmeet/ are the pre-Go-rewrite prototype, kept around
   // until deleted; exclude them from typechecking.
-  "include": [
-    "main.ts",
-    "src"
-  ]
+  "include": ["main.ts", "src"]
 }
diff --git a/src/atproto.ts b/src/atproto.ts
--- a/src/atproto.ts
+++ b/src/atproto.ts
@@ -12,7 +12,11 @@
 
 // Performs the full ATProto flow and returns a service-auth token scoped to
 // the given audience (service DID) and lexicon method.
-export async function getServiceToken(login: AtprotoLogin, aud: string, lxm: string): Promise<string> {
+export async function getServiceToken(
+  login: AtprotoLogin,
+  aud: string,
+  lxm: string,
+): Promise<string> {
   const pdsUrl = login.pdsUrl ?? (await resolvePds(login.handle));
 
   const session = await fetchJson<{ accessJwt: string }>(
diff --git a/src/config.test.ts b/src/config.test.ts
--- a/src/config.test.ts
+++ b/src/config.test.ts
@@ -12,7 +12,12 @@
 };
 
 test("loads a full config", () => {
-  const cfg = loadConfig({ ...baseEnv, SLACK_TOKEN: "xoxb-1", SLACK_CHANNEL: "#events", ENABLE_STDOUT: "true" });
+  const cfg = loadConfig({
+    ...baseEnv,
+    SLACK_TOKEN: "xoxb-1",
+    SLACK_CHANNEL: "#events",
+    ENABLE_STDOUT: "true",
+  });
   assert.equal(cfg.atprotoHandle, "test.example");
   assert.equal(cfg.weeklyNotifyDay, 1);
   assert.equal(cfg.weeklyNotifyHour, 7);
@@ -37,7 +42,10 @@
 
 test("invalid day and time throw", () => {
   assert.throws(() => loadConfig({ ...baseEnv, WEEKLY_NOTIFY_DAY: "Funday" }), /WEEKLY_NOTIFY_DAY/);
-  assert.throws(() => loadConfig({ ...baseEnv, WEEKLY_NOTIFY_TIME: "25:00" }), /WEEKLY_NOTIFY_TIME/);
+  assert.throws(
+    () => loadConfig({ ...baseEnv, WEEKLY_NOTIFY_TIME: "25:00" }),
+    /WEEKLY_NOTIFY_TIME/,
+  );
   assert.throws(() => loadConfig({ ...baseEnv, WEEKLY_NOTIFY_TIME: "7:30" }), /WEEKLY_NOTIFY_TIME/);
 });
 
diff --git a/src/config.ts b/src/config.ts
--- a/src/config.ts
+++ b/src/config.ts
@@ -26,7 +26,8 @@
 
   const day = required("WEEKLY_NOTIFY_DAY");
   const dayIndex = WEEKDAYS.indexOf(day);
-  if (dayIndex === -1) throw new Error(`invalid WEEKLY_NOTIFY_DAY "${day}" (expected e.g. "Monday")`);
+  if (dayIndex === -1)
+    throw new Error(`invalid WEEKLY_NOTIFY_DAY "${day}" (expected e.g. "Monday")`);
 
   const time = required("WEEKLY_NOTIFY_TIME");
   const match = /^(\d{2}):(\d{2})$/.exec(time);
diff --git a/src/http.ts b/src/http.ts
--- a/src/http.ts
+++ b/src/http.ts
@@ -10,7 +10,11 @@
   }
 }
 
-export async function fetchJson<T>(what: string, url: string | URL, init?: RequestInit): Promise<T> {
+export async function fetchJson<T>(
+  what: string,
+  url: string | URL,
+  init?: RequestInit,
+): Promise<T> {
   const resp = await fetch(url, init);
   if (!resp.ok) throw new HttpError(what, resp.status, await resp.text());
   return resp.json() as Promise<T>;
diff --git a/src/notify.test.ts b/src/notify.test.ts
--- a/src/notify.test.ts
+++ b/src/notify.test.ts
@@ -1,7 +1,14 @@
 import assert from "node:assert/strict";
 import test from "node:test";
 
-import { slackChannel, slackMany, slackOne, stdoutChannel, stdoutMany, stdoutOne } from "./notify.ts";
+import {
+  slackChannel,
+  slackMany,
+  slackOne,
+  stdoutChannel,
+  stdoutMany,
+  stdoutOne,
+} from "./notify.ts";
 import type { OpenMeetEvent } from "./openmeet.ts";
 
 const event = (name: string, slug: string): OpenMeetEvent => ({
@@ -38,7 +45,11 @@
 test("slackChannel posts to chat.postMessage with auth", async (t) => {
   const requests: { url: string; auth: string | null; body: any }[] = [];
   t.mock.method(globalThis, "fetch", async (url: any, init: any) => {
-    requests.push({ url: String(url), auth: new Headers(init.headers).get("authorization"), body: JSON.parse(init.body) });
+    requests.push({
+      url: String(url),
+      auth: new Headers(init.headers).get("authorization"),
+      body: JSON.parse(init.body),
+    });
     return Response.json({ ok: true });
   });
 
@@ -54,6 +65,8 @@
 });
 
 test("slackChannel surfaces ok:false API errors", async (t) => {
-  t.mock.method(globalThis, "fetch", async () => Response.json({ ok: false, error: "channel_not_found" }));
+  t.mock.method(globalThis, "fetch", async () =>
+    Response.json({ ok: false, error: "channel_not_found" }),
+  );
   await assert.rejects(slackChannel("t", "#nope").notifyMany([]), /channel_not_found/);
 });
diff --git a/src/notify.ts b/src/notify.ts
--- a/src/notify.ts
+++ b/src/notify.ts
@@ -10,12 +10,15 @@
   notifyMany(events: OpenMeetEvent[]): Promise<void>;
 }>;
 
-export const slackOne = (e: OpenMeetEvent): string => `:sparkles: *New event posted:* ${formatEvent(e)}`;
+export const slackOne = (e: OpenMeetEvent): string =>
+  `:sparkles: *New event posted:* ${formatEvent(e)}`;
 
 export const slackMany = (events: OpenMeetEvent[]): string =>
   events.length === 0
     ? ":calendar: No upcoming events this week."
-    : [":calendar: *Upcoming events this week:*", ...events.map((e) => `• ${formatEvent(e)}`)].join("\n");
+    : [":calendar: *Upcoming events this week:*", ...events.map((e) => `• ${formatEvent(e)}`)].join(
+        "\n",
+      );
 
 export const stdoutOne = (e: OpenMeetEvent): string => `New event: ${formatEvent(e)}`;
 
@@ -32,13 +35,24 @@
   };
 }
 
-export function slackChannel(token: string, channel: string, apiBase = "https://slack.com/api"): Channel {
+export function slackChannel(
+  token: string,
+  channel: string,
+  apiBase = "https://slack.com/api",
+): Channel {
   const post = async (text: string): Promise<void> => {
-    const result = await fetchJson<{ ok: boolean; error?: string }>("slack post", `${apiBase}/chat.postMessage`, {
-      method: "POST",
-      headers: { Authorization: `Bearer ${token}`, "Content-Type": "application/json; charset=utf-8" },
-      body: JSON.stringify({ channel, text }),
-    });
+    const result = await fetchJson<{ ok: boolean; error?: string }>(
+      "slack post",
+      `${apiBase}/chat.postMessage`,
+      {
+        method: "POST",
+        headers: {
+          Authorization: `Bearer ${token}`,
+          "Content-Type": "application/json; charset=utf-8",
+        },
+        body: JSON.stringify({ channel, text }),
+      },
+    );
     // Slack returns 200 with {"ok": false, "error": "..."} for API-level
     // failures (bad token, channel not found, etc.).
     if (!result.ok) throw new Error(`slack API error: ${result.error}`);
diff --git a/src/openmeet.test.ts b/src/openmeet.test.ts
--- a/src/openmeet.test.ts
+++ b/src/openmeet.test.ts
@@ -19,7 +19,12 @@
 };
 
 const events: OpenMeetEvent[] = [
-  { name: "Hack Night", slug: "hack-night", startDate: "2026-06-15T18:00:00", endDate: "2026-06-15T20:00:00" },
+  {
+    name: "Hack Night",
+    slug: "hack-night",
+    startDate: "2026-06-15T18:00:00",
+    endDate: "2026-06-15T20:00:00",
+  },
 ];
 
 // Routes fetch calls by URL path so a test can script each endpoint's
@@ -99,7 +104,11 @@
 
   assert.deepEqual(result.events, events);
   assert.equal(result.tokens.token, "access-2");
-  assert.deepEqual(calls, ["/api/groups/devict/events", "/api/v1/auth/refresh", "/api/groups/devict/events"]);
+  assert.deepEqual(calls, [
+    "/api/groups/devict/events",
+    "/api/v1/auth/refresh",
+    "/api/groups/devict/events",
+  ]);
 });
 
 test("falls back to full re-auth when the refresh token is rejected", async (t) => {
@@ -107,7 +116,8 @@
   routeFetch(t, {
     ...authRoutes,
     "/api/v1/auth/refresh": () => new Response("nope", { status: 401 }),
-    "/api/groups/devict/events": () => (++eventCalls === 1 ? new Response("expired", { status: 401 }) : Response.json(events)),
+    "/api/groups/devict/events": () =>
+      ++eventCalls === 1 ? new Response("expired", { status: 401 }) : Response.json(events),
   });
 
   const tokens = { token: "stale", refreshToken: "stale", tokenExpires: 0 };
@@ -120,7 +130,8 @@
 test("gives up after exhausting retries on persistent 401s", async (t) => {
   routeFetch(t, {
     "/api/groups/devict/events": () => new Response("expired", { status: 401 }),
-    "/api/v1/auth/refresh": () => Response.json({ token: "x", refreshToken: "y", tokenExpires: 9999 }),
+    "/api/v1/auth/refresh": () =>
+      Response.json({ token: "x", refreshToken: "y", tokenExpires: 9999 }),
   });
 
   const tokens = { token: "access-1", refreshToken: "refresh-1", tokenExpires: 9999 };
diff --git a/src/openmeet.ts b/src/openmeet.ts
--- a/src/openmeet.ts
+++ b/src/openmeet.ts
@@ -38,11 +38,15 @@
     SERVICE_DID,
     LEXICON_METHOD,
   );
-  return fetchJson<Tokens>("token exchange", `${cfg.openMeetBaseUrl}/api/v1/auth/atproto/service-auth`, {
-    method: "POST",
-    headers: headers(),
-    body: JSON.stringify({ token: serviceToken }),
-  });
+  return fetchJson<Tokens>(
+    "token exchange",
+    `${cfg.openMeetBaseUrl}/api/v1/auth/atproto/service-auth`,
+    {
+      method: "POST",
+      headers: headers(),
+      body: JSON.stringify({ token: serviceToken }),
+    },
+  );
 }
 
 // Mints a new access token from the refresh token; a 401 falls back to a
@@ -76,7 +80,9 @@
   tokens ??= await authenticate(cfg);
   for (let attempt = 1; ; attempt++) {
     try {
-      const events = await fetchJson<OpenMeetEvent[]>("events fetch", url, { headers: headers(tokens) });
+      const events = await fetchJson<OpenMeetEvent[]>("events fetch", url, {
+        headers: headers(tokens),
+      });
       return { events, tokens };
     } catch (err) {
       if (err instanceof HttpError && err.status === 401 && attempt < 3) {