diff --git a/.claude/skills/setup/SKILL.md b/.claude/skills/setup/SKILL.md
index 28a3608..e12e0ea 100644
--- a/.claude/skills/setup/SKILL.md
+++ b/.claude/skills/setup/SKILL.md
@@ -98,6 +98,13 @@ Run `npx tsx setup/index.ts --step environment` and parse the status block.
 - If HAS_REGISTERED_GROUPS=true → note existing config, offer to skip or reconfigure
 - Record APPLE_CONTAINER and DOCKER values for step 3
 
+## 2a. Timezone
+
+Run `npx tsx setup/index.ts --step timezone` and parse the status block.
+
+- If NEEDS_USER_INPUT=true → The system timezone could not be autodetected (e.g. POSIX-style TZ like `IST-2`). AskUserQuestion: "What is your timezone?" with common options (America/New_York, Europe/London, Asia/Jerusalem, Asia/Tokyo) and an "Other" escape. Then re-run: `npx tsx setup/index.ts --step timezone -- --tz <their-answer>`.
+- If STATUS=success → Timezone is configured. Note RESOLVED_TZ for reference.
+
 ## 3. Container Runtime
 
 ### 3a. Choose runtime
diff --git a/container/Dockerfile b/container/Dockerfile
index 2fe1b22..e8537c3 100644
--- a/container/Dockerfile
+++ b/container/Dockerfile
@@ -1,7 +1,7 @@
 # NanoClaw Agent Container
 # Runs Claude Agent SDK in isolated Linux VM with browser automation
 
-FROM node:24-slim
+FROM node:22-slim
 
 # Install system dependencies for Chromium
 RUN apt-get update && apt-get install -y \
diff --git a/package-lock.json b/package-lock.json
index 39bc424..3f17016 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -11,6 +11,7 @@
         "@onecli-sh/sdk": "^0.2.0",
         "better-sqlite3": "^11.8.1",
         "cron-parser": "^5.5.0",
+        "grammy": "^1.39.3",
         "pino": "^9.6.0",
         "pino-pretty": "^13.0.0",
         "yaml": "^2.8.2",
@@ -542,7 +543,6 @@
       "resolved": "https://registry.npmjs.org/@eslint-community/eslint-utils/-/eslint-utils-4.9.1.tgz",
       "integrity": "sha512-phrYmNiYppR7znFEdqgfWHXR6NCkZEK7hwWDHZUjit/2/U0r6XvkDl0SYnoM51Hq7FhCGdLDT6zxCCOY1hexsQ==",
       "dev": true,
-      "license": "MIT",
       "dependencies": {
         "eslint-visitor-keys": "^3.4.3"
       },
@@ -561,7 +561,6 @@
       "resolved": "https://registry.npmjs.org/eslint-visitor-keys/-/eslint-visitor-keys-3.4.3.tgz",
       "integrity": "sha512-wpc+LXeiyiisxPlEkUzU6svyS1frIO3Mgxj1fdy7Pm8Ygzguax2N3Fa/D/ag1WqbOprdI+uY6wMUl8/a2G+iag==",
       "dev": true,
-      "license": "Apache-2.0",
       "engines": {
         "node": "^12.22.0 || ^14.17.0 || >=16.0.0"
       },
@@ -574,7 +573,6 @@
       "resolved": "https://registry.npmjs.org/@eslint-community/regexpp/-/regexpp-4.12.2.tgz",
       "integrity": "sha512-EriSTlt5OC9/7SXkRSCAhfSxxoSUgBm33OH+IkwbdpgoqsSsUg7y3uh+IICI/Qg4BBWr3U2i39RpmycbxMq4ew==",
       "dev": true,
-      "license": "MIT",
       "engines": {
         "node": "^12.0.0 || ^14.0.0 || >=16.0.0"
       }
@@ -584,7 +582,6 @@
       "resolved": "https://registry.npmjs.org/@eslint/config-array/-/config-array-0.21.2.tgz",
       "integrity": "sha512-nJl2KGTlrf9GjLimgIru+V/mzgSK0ABCDQRvxw5BjURL7WfH5uoWmizbH7QB6MmnMBd8cIC9uceWnezL1VZWWw==",
       "dev": true,
-      "license": "Apache-2.0",
       "dependencies": {
         "@eslint/object-schema": "^2.1.7",
         "debug": "^4.3.1",
@@ -599,7 +596,6 @@
       "resolved": "https://registry.npmjs.org/@eslint/config-helpers/-/config-helpers-0.4.2.tgz",
       "integrity": "sha512-gBrxN88gOIf3R7ja5K9slwNayVcZgK6SOUORm2uBzTeIEfeVaIhOpCtTox3P6R7o2jLFwLFTLnC7kU/RGcYEgw==",
       "dev": true,
-      "license": "Apache-2.0",
       "dependencies": {
         "@eslint/core": "^0.17.0"
       },
@@ -612,7 +608,6 @@
       "resolved": "https://registry.npmjs.org/@eslint/core/-/core-0.17.0.tgz",
       "integrity": "sha512-yL/sLrpmtDaFEiUj1osRP4TI2MDz1AddJL+jZ7KSqvBuliN4xqYY54IfdN8qD8Toa6g1iloph1fxQNkjOxrrpQ==",
       "dev": true,
-      "license": "Apache-2.0",
       "dependencies": {
         "@types/json-schema": "^7.0.15"
       },
@@ -625,7 +620,6 @@
       "resolved": "https://registry.npmjs.org/@eslint/eslintrc/-/eslintrc-3.3.5.tgz",
       "integrity": "sha512-4IlJx0X0qftVsN5E+/vGujTRIFtwuLbNsVUe7TO6zYPDR1O6nFwvwhIKEKSrl6dZchmYBITazxKoUYOjdtjlRg==",
       "dev": true,
-      "license": "MIT",
       "dependencies": {
         "ajv": "^6.14.0",
         "debug": "^4.3.2",
@@ -649,7 +643,6 @@
       "resolved": "https://registry.npmjs.org/globals/-/globals-14.0.0.tgz",
       "integrity": "sha512-oahGvuMGQlPw/ivIYBjVSrWAfWLBeku5tpPE2fOPLi+WHffIWbuh2tCjhyQhTBPMf5E9jDEH4FOmTYgYwbKwtQ==",
       "dev": true,
-      "license": "MIT",
       "engines": {
         "node": ">=18"
       },
@@ -662,7 +655,6 @@
       "resolved": "https://registry.npmjs.org/strip-json-comments/-/strip-json-comments-3.1.1.tgz",
       "integrity": "sha512-6fPc+R4ihwqP6N/aIv2f1gMH8lOVtWQHoqC4yK6oSDVVocumAsfCqjkXnqiYMhmMwS/mEHLp7Vehlt3ql6lEig==",
       "dev": true,
-      "license": "MIT",
       "engines": {
         "node": ">=8"
       },
@@ -675,7 +667,6 @@
       "resolved": "https://registry.npmjs.org/@eslint/js/-/js-9.39.4.tgz",
       "integrity": "sha512-nE7DEIchvtiFTwBw4Lfbu59PG+kCofhjsKaCWzxTpt4lfRjRMqG6uMBzKXuEcyXhOHoUp9riAm7/aWYGhXZ9cw==",
       "dev": true,
-      "license": "MIT",
       "engines": {
         "node": "^18.18.0 || ^20.9.0 || >=21.1.0"
       },
@@ -688,7 +679,6 @@
       "resolved": "https://registry.npmjs.org/@eslint/object-schema/-/object-schema-2.1.7.tgz",
       "integrity": "sha512-VtAOaymWVfZcmZbp6E2mympDIHvyjXs/12LqWYjVw6qjrfF+VK+fyG33kChz3nnK+SU5/NeHOqrTEHS8sXO3OA==",
       "dev": true,
-      "license": "Apache-2.0",
       "engines": {
         "node": "^18.18.0 || ^20.9.0 || >=21.1.0"
       }
@@ -698,7 +688,6 @@
       "resolved": "https://registry.npmjs.org/@eslint/plugin-kit/-/plugin-kit-0.4.1.tgz",
       "integrity": "sha512-43/qtrDUokr7LJqoF2c3+RInu/t4zfrpYdoSDfYyhg52rwLV6TnOvdG4fXm7IkSB3wErkcmJS9iEhjVtOSEjjA==",
       "dev": true,
-      "license": "Apache-2.0",
       "dependencies": {
         "@eslint/core": "^0.17.0",
         "levn": "^0.4.1"
@@ -707,12 +696,17 @@
         "node": "^18.18.0 || ^20.9.0 || >=21.1.0"
       }
     },
+    "node_modules/@grammyjs/types": {
+      "version": "3.25.0",
+      "resolved": "https://registry.npmjs.org/@grammyjs/types/-/types-3.25.0.tgz",
+      "integrity": "sha512-iN9i5p+8ZOu9OMxWNcguojQfz4K/PDyMPOnL7PPCON+SoA/F8OKMH3uR7CVUkYfdNe0GCz8QOzAWrnqusQYFOg==",
+      "license": "MIT"
+    },
     "node_modules/@humanfs/core": {
       "version": "0.19.1",
       "resolved": "https://registry.npmjs.org/@humanfs/core/-/core-0.19.1.tgz",
       "integrity": "sha512-5DyQ4+1JEUzejeK1JGICcideyfUbGixgS9jNgex5nqkW+cY7WZhxBigmieN5Qnw9ZosSNVC9KQKyb+GUaGyKUA==",
       "dev": true,
-      "license": "Apache-2.0",
       "engines": {
         "node": ">=18.18.0"
       }
@@ -722,7 +716,6 @@
       "resolved": "https://registry.npmjs.org/@humanfs/node/-/node-0.16.7.tgz",
       "integrity": "sha512-/zUx+yOsIrG4Y43Eh2peDeKCxlRt/gET6aHfaKpuq267qXdYDFViVHfMaLyygZOnl0kGWxFIgsBy8QFuTLUXEQ==",
       "dev": true,
-      "license": "Apache-2.0",
       "dependencies": {
         "@humanfs/core": "^0.19.1",
         "@humanwhocodes/retry": "^0.4.0"
@@ -736,7 +729,6 @@
       "resolved": "https://registry.npmjs.org/@humanwhocodes/module-importer/-/module-importer-1.0.1.tgz",
       "integrity": "sha512-bxveV4V8v5Yb4ncFTT3rPSgZBOpCkjfK0y4oVVVJwIuDVBRMDXrPyXRL988i5ap9m9bnyEEjWfm5WkBmtffLfA==",
       "dev": true,
-      "license": "Apache-2.0",
       "engines": {
         "node": ">=12.22"
       },
@@ -750,7 +742,6 @@
       "resolved": "https://registry.npmjs.org/@humanwhocodes/retry/-/retry-0.4.3.tgz",
       "integrity": "sha512-bV0Tgo9K4hfPCek+aMAn81RppFKv2ySDQeMoSZuvTASywNTnVJCArCZE2FWqpvIatKu7VMRLWlR1EazvVhDyhQ==",
       "dev": true,
-      "license": "Apache-2.0",
       "engines": {
         "node": ">=18.18"
       },
@@ -791,7 +782,6 @@
       "version": "0.2.0",
       "resolved": "https://registry.npmjs.org/@onecli-sh/sdk/-/sdk-0.2.0.tgz",
       "integrity": "sha512-u7PqWROEvTV9f0ADVkjigTrd2AZn3klbPrv7GGpeRHIJpjAxJUdlWqxr5kiGt6qTDKL8t3nq76xr4X2pxTiyBg==",
-      "license": "MIT",
       "engines": {
         "node": ">=20"
       }
@@ -1198,8 +1188,7 @@
       "version": "7.0.15",
       "resolved": "https://registry.npmjs.org/@types/json-schema/-/json-schema-7.0.15.tgz",
       "integrity": "sha512-5+fP8P8MFNC+AyZCDxrB2pkZFPGzqQWUzpSeuuVLvm8VMcorNYavBqoFcxK8bQz4Qsbn4oUEEem4wDLfcysGHA==",
-      "dev": true,
-      "license": "MIT"
+      "dev": true
     },
     "node_modules/@types/node": {
       "version": "22.19.11",
@@ -1212,17 +1201,16 @@
       }
     },
     "node_modules/@typescript-eslint/eslint-plugin": {
-      "version": "8.57.1",
-      "resolved": "https://registry.npmjs.org/@typescript-eslint/eslint-plugin/-/eslint-plugin-8.57.1.tgz",
-      "integrity": "sha512-Gn3aqnvNl4NGc6x3/Bqk1AOn0thyTU9bqDRhiRnUWezgvr2OnhYCWCgC8zXXRVqBsIL1pSDt7T9nJUe0oM0kDQ==",
+      "version": "8.57.2",
+      "resolved": "https://registry.npmjs.org/@typescript-eslint/eslint-plugin/-/eslint-plugin-8.57.2.tgz",
+      "integrity": "sha512-NZZgp0Fm2IkD+La5PR81sd+g+8oS6JwJje+aRWsDocxHkjyRw0J5L5ZTlN3LI1LlOcGL7ph3eaIUmTXMIjLk0w==",
       "dev": true,
-      "license": "MIT",
       "dependencies": {
         "@eslint-community/regexpp": "^4.12.2",
-        "@typescript-eslint/scope-manager": "8.57.1",
-        "@typescript-eslint/type-utils": "8.57.1",
-        "@typescript-eslint/utils": "8.57.1",
-        "@typescript-eslint/visitor-keys": "8.57.1",
+        "@typescript-eslint/scope-manager": "8.57.2",
+        "@typescript-eslint/type-utils": "8.57.2",
+        "@typescript-eslint/utils": "8.57.2",
+        "@typescript-eslint/visitor-keys": "8.57.2",
         "ignore": "^7.0.5",
         "natural-compare": "^1.4.0",
         "ts-api-utils": "^2.4.0"
@@ -1235,7 +1223,7 @@
         "url": "https://opencollective.com/typescript-eslint"
       },
       "peerDependencies": {
-        "@typescript-eslint/parser": "^8.57.1",
+        "@typescript-eslint/parser": "^8.57.2",
         "eslint": "^8.57.0 || ^9.0.0 || ^10.0.0",
         "typescript": ">=4.8.4 <6.0.0"
       }
@@ -1245,22 +1233,20 @@
       "resolved": "https://registry.npmjs.org/ignore/-/ignore-7.0.5.tgz",
       "integrity": "sha512-Hs59xBNfUIunMFgWAbGX5cq6893IbWg4KnrjbYwX3tx0ztorVgTDA6B2sxf8ejHJ4wz8BqGUMYlnzNBer5NvGg==",
       "dev": true,
-      "license": "MIT",
       "engines": {
         "node": ">= 4"
       }
     },
     "node_modules/@typescript-eslint/parser": {
-      "version": "8.57.1",
-      "resolved": "https://registry.npmjs.org/@typescript-eslint/parser/-/parser-8.57.1.tgz",
-      "integrity": "sha512-k4eNDan0EIMTT/dUKc/g+rsJ6wcHYhNPdY19VoX/EOtaAG8DLtKCykhrUnuHPYvinn5jhAPgD2Qw9hXBwrahsw==",
+      "version": "8.57.2",
+      "resolved": "https://registry.npmjs.org/@typescript-eslint/parser/-/parser-8.57.2.tgz",
+      "integrity": "sha512-30ScMRHIAD33JJQkgfGW1t8CURZtjc2JpTrq5n2HFhOefbAhb7ucc7xJwdWcrEtqUIYJ73Nybpsggii6GtAHjA==",
       "dev": true,
-      "license": "MIT",
       "dependencies": {
-        "@typescript-eslint/scope-manager": "8.57.1",
-        "@typescript-eslint/types": "8.57.1",
-        "@typescript-eslint/typescript-estree": "8.57.1",
-        "@typescript-eslint/visitor-keys": "8.57.1",
+        "@typescript-eslint/scope-manager": "8.57.2",
+        "@typescript-eslint/types": "8.57.2",
+        "@typescript-eslint/typescript-estree": "8.57.2",
+        "@typescript-eslint/visitor-keys": "8.57.2",
         "debug": "^4.4.3"
       },
       "engines": {
@@ -1276,14 +1262,13 @@
       }
     },
     "node_modules/@typescript-eslint/project-service": {
-      "version": "8.57.1",
-      "resolved": "https://registry.npmjs.org/@typescript-eslint/project-service/-/project-service-8.57.1.tgz",
-      "integrity": "sha512-vx1F37BRO1OftsYlmG9xay1TqnjNVlqALymwWVuYTdo18XuKxtBpCj1QlzNIEHlvlB27osvXFWptYiEWsVdYsg==",
+      "version": "8.57.2",
+      "resolved": "https://registry.npmjs.org/@typescript-eslint/project-service/-/project-service-8.57.2.tgz",
+      "integrity": "sha512-FuH0wipFywXRTHf+bTTjNyuNQQsQC3qh/dYzaM4I4W0jrCqjCVuUh99+xd9KamUfmCGPvbO8NDngo/vsnNVqgw==",
       "dev": true,
-      "license": "MIT",
       "dependencies": {
-        "@typescript-eslint/tsconfig-utils": "^8.57.1",
-        "@typescript-eslint/types": "^8.57.1",
+        "@typescript-eslint/tsconfig-utils": "^8.57.2",
+        "@typescript-eslint/types": "^8.57.2",
         "debug": "^4.4.3"
       },
       "engines": {
@@ -1298,14 +1283,13 @@
       }
     },
     "node_modules/@typescript-eslint/scope-manager": {
-      "version": "8.57.1",
-      "resolved": "https://registry.npmjs.org/@typescript-eslint/scope-manager/-/scope-manager-8.57.1.tgz",
-      "integrity": "sha512-hs/QcpCwlwT2L5S+3fT6gp0PabyGk4Q0Rv2doJXA0435/OpnSR3VRgvrp8Xdoc3UAYSg9cyUjTeFXZEPg/3OKg==",
+      "version": "8.57.2",
+      "resolved": "https://registry.npmjs.org/@typescript-eslint/scope-manager/-/scope-manager-8.57.2.tgz",
+      "integrity": "sha512-snZKH+W4WbWkrBqj4gUNRIGb/jipDW3qMqVJ4C9rzdFc+wLwruxk+2a5D+uoFcKPAqyqEnSb4l2ULuZf95eSkw==",
       "dev": true,
-      "license": "MIT",
       "dependencies": {
-        "@typescript-eslint/types": "8.57.1",
-        "@typescript-eslint/visitor-keys": "8.57.1"
+        "@typescript-eslint/types": "8.57.2",
+        "@typescript-eslint/visitor-keys": "8.57.2"
       },
       "engines": {
         "node": "^18.18.0 || ^20.9.0 || >=21.1.0"
@@ -1316,11 +1300,10 @@
       }
     },
     "node_modules/@typescript-eslint/tsconfig-utils": {
-      "version": "8.57.1",
-      "resolved": "https://registry.npmjs.org/@typescript-eslint/tsconfig-utils/-/tsconfig-utils-8.57.1.tgz",
-      "integrity": "sha512-0lgOZB8cl19fHO4eI46YUx2EceQqhgkPSuCGLlGi79L2jwYY1cxeYc1Nae8Aw1xjgW3PKVDLlr3YJ6Bxx8HkWg==",
+      "version": "8.57.2",
+      "resolved": "https://registry.npmjs.org/@typescript-eslint/tsconfig-utils/-/tsconfig-utils-8.57.2.tgz",
+      "integrity": "sha512-3Lm5DSM+DCowsUOJC+YqHHnKEfFh5CoGkj5Z31NQSNF4l5wdOwqGn99wmwN/LImhfY3KJnmordBq/4+VDe2eKw==",
       "dev": true,
-      "license": "MIT",
       "engines": {
         "node": "^18.18.0 || ^20.9.0 || >=21.1.0"
       },
@@ -1333,15 +1316,14 @@
       }
     },
     "node_modules/@typescript-eslint/type-utils": {
-      "version": "8.57.1",
-      "resolved": "https://registry.npmjs.org/@typescript-eslint/type-utils/-/type-utils-8.57.1.tgz",
-      "integrity": "sha512-+Bwwm0ScukFdyoJsh2u6pp4S9ktegF98pYUU0hkphOOqdMB+1sNQhIz8y5E9+4pOioZijrkfNO/HUJVAFFfPKA==",
+      "version": "8.57.2",
+      "resolved": "https://registry.npmjs.org/@typescript-eslint/type-utils/-/type-utils-8.57.2.tgz",
+      "integrity": "sha512-Co6ZCShm6kIbAM/s+oYVpKFfW7LBc6FXoPXjTRQ449PPNBY8U0KZXuevz5IFuuUj2H9ss40atTaf9dlGLzbWZg==",
       "dev": true,
-      "license": "MIT",
       "dependencies": {
-        "@typescript-eslint/types": "8.57.1",
-        "@typescript-eslint/typescript-estree": "8.57.1",
-        "@typescript-eslint/utils": "8.57.1",
+        "@typescript-eslint/types": "8.57.2",
+        "@typescript-eslint/typescript-estree": "8.57.2",
+        "@typescript-eslint/utils": "8.57.2",
         "debug": "^4.4.3",
         "ts-api-utils": "^2.4.0"
       },
@@ -1358,11 +1340,10 @@
       }
     },
     "node_modules/@typescript-eslint/types": {
-      "version": "8.57.1",
-      "resolved": "https://registry.npmjs.org/@typescript-eslint/types/-/types-8.57.1.tgz",
-      "integrity": "sha512-S29BOBPJSFUiblEl6RzPPjJt6w25A6XsBqRVDt53tA/tlL8q7ceQNZHTjPeONt/3S7KRI4quk+yP9jK2WjBiPQ==",
+      "version": "8.57.2",
+      "resolved": "https://registry.npmjs.org/@typescript-eslint/types/-/types-8.57.2.tgz",
+      "integrity": "sha512-/iZM6FnM4tnx9csuTxspMW4BOSegshwX5oBDznJ7S4WggL7Vczz5d2W11ecc4vRrQMQHXRSxzrCsyG5EsPPTbA==",
       "dev": true,
-      "license": "MIT",
       "engines": {
         "node": "^18.18.0 || ^20.9.0 || >=21.1.0"
       },
@@ -1372,16 +1353,15 @@
       }
     },
     "node_modules/@typescript-eslint/typescript-estree": {
-      "version": "8.57.1",
-      "resolved": "https://registry.npmjs.org/@typescript-eslint/typescript-estree/-/typescript-estree-8.57.1.tgz",
-      "integrity": "sha512-ybe2hS9G6pXpqGtPli9Gx9quNV0TWLOmh58ADlmZe9DguLq0tiAKVjirSbtM1szG6+QH6rVXyU6GTLQbWnMY+g==",
+      "version": "8.57.2",
+      "resolved": "https://registry.npmjs.org/@typescript-eslint/typescript-estree/-/typescript-estree-8.57.2.tgz",
+      "integrity": "sha512-2MKM+I6g8tJxfSmFKOnHv2t8Sk3T6rF20A1Puk0svLK+uVapDZB/4pfAeB7nE83uAZrU6OxW+HmOd5wHVdXwXA==",
       "dev": true,
-      "license": "MIT",
       "dependencies": {
-        "@typescript-eslint/project-service": "8.57.1",
-        "@typescript-eslint/tsconfig-utils": "8.57.1",
-        "@typescript-eslint/types": "8.57.1",
-        "@typescript-eslint/visitor-keys": "8.57.1",
+        "@typescript-eslint/project-service": "8.57.2",
+        "@typescript-eslint/tsconfig-utils": "8.57.2",
+        "@typescript-eslint/types": "8.57.2",
+        "@typescript-eslint/visitor-keys": "8.57.2",
         "debug": "^4.4.3",
         "minimatch": "^10.2.2",
         "semver": "^7.7.3",
@@ -1404,17 +1384,15 @@
       "resolved": "https://registry.npmjs.org/balanced-match/-/balanced-match-4.0.4.tgz",
       "integrity": "sha512-BLrgEcRTwX2o6gGxGOCNyMvGSp35YofuYzw9h1IMTRmKqttAZZVU67bdb9Pr2vUHA8+j3i2tJfjO6C6+4myGTA==",
       "dev": true,
-      "license": "MIT",
       "engines": {
         "node": "18 || 20 || >=22"
       }
     },
     "node_modules/@typescript-eslint/typescript-estree/node_modules/brace-expansion": {
-      "version": "5.0.4",
-      "resolved": "https://registry.npmjs.org/brace-expansion/-/brace-expansion-5.0.4.tgz",
-      "integrity": "sha512-h+DEnpVvxmfVefa4jFbCf5HdH5YMDXRsmKflpf1pILZWRFlTbJpxeU55nJl4Smt5HQaGzg1o6RHFPJaOqnmBDg==",
+      "version": "5.0.5",
+      "resolved": "https://registry.npmjs.org/brace-expansion/-/brace-expansion-5.0.5.tgz",
+      "integrity": "sha512-VZznLgtwhn+Mact9tfiwx64fA9erHH/MCXEUfB/0bX/6Fz6ny5EGTXYltMocqg4xFAQZtnO3DHWWXi8RiuN7cQ==",
       "dev": true,
-      "license": "MIT",
       "dependencies": {
         "balanced-match": "^4.0.2"
       },
@@ -1427,7 +1405,6 @@
       "resolved": "https://registry.npmjs.org/minimatch/-/minimatch-10.2.4.tgz",
       "integrity": "sha512-oRjTw/97aTBN0RHbYCdtF1MQfvusSIBQM0IZEgzl6426+8jSC0nF1a/GmnVLpfB9yyr6g6FTqWqiZVbxrtaCIg==",
       "dev": true,
-      "license": "BlueOak-1.0.0",
       "dependencies": {
         "brace-expansion": "^5.0.2"
       },
@@ -1439,16 +1416,15 @@
       }
     },
     "node_modules/@typescript-eslint/utils": {
-      "version": "8.57.1",
-      "resolved": "https://registry.npmjs.org/@typescript-eslint/utils/-/utils-8.57.1.tgz",
-      "integrity": "sha512-XUNSJ/lEVFttPMMoDVA2r2bwrl8/oPx8cURtczkSEswY5T3AeLmCy+EKWQNdL4u0MmAHOjcWrqJp2cdvgjn8dQ==",
+      "version": "8.57.2",
+      "resolved": "https://registry.npmjs.org/@typescript-eslint/utils/-/utils-8.57.2.tgz",
+      "integrity": "sha512-krRIbvPK1ju1WBKIefiX+bngPs+odIQUtR7kymzPfo1POVw3jlF+nLkmexdSSd4UCbDcQn+wMBATOOmpBbqgKg==",
       "dev": true,
-      "license": "MIT",
       "dependencies": {
         "@eslint-community/eslint-utils": "^4.9.1",
-        "@typescript-eslint/scope-manager": "8.57.1",
-        "@typescript-eslint/types": "8.57.1",
-        "@typescript-eslint/typescript-estree": "8.57.1"
+        "@typescript-eslint/scope-manager": "8.57.2",
+        "@typescript-eslint/types": "8.57.2",
+        "@typescript-eslint/typescript-estree": "8.57.2"
       },
       "engines": {
         "node": "^18.18.0 || ^20.9.0 || >=21.1.0"
@@ -1463,13 +1439,12 @@
       }
     },
     "node_modules/@typescript-eslint/visitor-keys": {
-      "version": "8.57.1",
-      "resolved": "https://registry.npmjs.org/@typescript-eslint/visitor-keys/-/visitor-keys-8.57.1.tgz",
-      "integrity": "sha512-YWnmJkXbofiz9KbnbbwuA2rpGkFPLbAIetcCNO6mJ8gdhdZ/v7WDXsoGFAJuM6ikUFKTlSQnjWnVO4ux+UzS6A==",
+      "version": "8.57.2",
+      "resolved": "https://registry.npmjs.org/@typescript-eslint/visitor-keys/-/visitor-keys-8.57.2.tgz",
+      "integrity": "sha512-zhahknjobV2FiD6Ee9iLbS7OV9zi10rG26odsQdfBO/hjSzUQbkIYgda+iNKK1zNiW2ey+Lf8MU5btN17V3dUw==",
       "dev": true,
-      "license": "MIT",
       "dependencies": {
-        "@typescript-eslint/types": "8.57.1",
+        "@typescript-eslint/types": "8.57.2",
         "eslint-visitor-keys": "^5.0.0"
       },
       "engines": {
@@ -1485,7 +1460,6 @@
       "resolved": "https://registry.npmjs.org/eslint-visitor-keys/-/eslint-visitor-keys-5.0.1.tgz",
       "integrity": "sha512-tD40eHxA35h0PEIZNeIjkHoDR4YjjJp34biM0mDvplBe//mB+IHCqHDGV7pxF+7MklTvighcCPPZC7ynWyjdTA==",
       "dev": true,
-      "license": "Apache-2.0",
       "engines": {
         "node": "^20.19.0 || ^22.13.0 || >=24"
       },
@@ -1635,12 +1609,23 @@
         "url": "https://opencollective.com/vitest"
       }
     },
+    "node_modules/abort-controller": {
+      "version": "3.0.0",
+      "resolved": "https://registry.npmjs.org/abort-controller/-/abort-controller-3.0.0.tgz",
+      "integrity": "sha512-h8lQ8tacZYnR3vNQTgibj+tODHI5/+l06Au2Pcriv/Gmet0eaj4TwWH41sO9wnHDiQsEj19q0drzdWdeAHtweg==",
+      "license": "MIT",
+      "dependencies": {
+        "event-target-shim": "^5.0.0"
+      },
+      "engines": {
+        "node": ">=6.5"
+      }
+    },
     "node_modules/acorn": {
       "version": "8.16.0",
       "resolved": "https://registry.npmjs.org/acorn/-/acorn-8.16.0.tgz",
       "integrity": "sha512-UVJyE9MttOsBQIDKw1skb9nAwQuR5wuGD3+82K6JgJlm/Y+KI92oNsMNGZCYdDsVtRHSak0pcV5Dno5+4jh9sw==",
       "dev": true,
-      "license": "MIT",
       "bin": {
         "acorn": "bin/acorn"
       },
@@ -1653,7 +1638,6 @@
       "resolved": "https://registry.npmjs.org/acorn-jsx/-/acorn-jsx-5.3.2.tgz",
       "integrity": "sha512-rq9s+JNhf0IChjtDXxllJ7g41oZk5SlXtp0LHwyA5cejwn7vKmKp4pPri6YEePv2PU65sAsegbXtIinmDFDXgQ==",
       "dev": true,
-      "license": "MIT",
       "peerDependencies": {
         "acorn": "^6.0.0 || ^7.0.0 || ^8.0.0"
       }
@@ -1663,7 +1647,6 @@
       "resolved": "https://registry.npmjs.org/ajv/-/ajv-6.14.0.tgz",
       "integrity": "sha512-IWrosm/yrn43eiKqkfkHis7QioDleaXQHdDVPKg0FSwwd/DuvyX79TZnFOnYpB7dcsFAMmtFztZuXPDvSePkFw==",
       "dev": true,
-      "license": "MIT",
       "dependencies": {
         "fast-deep-equal": "^3.1.1",
         "fast-json-stable-stringify": "^2.0.0",
@@ -1680,7 +1663,6 @@
       "resolved": "https://registry.npmjs.org/ansi-styles/-/ansi-styles-4.3.0.tgz",
       "integrity": "sha512-zbB9rCJAT1rbjiVDb2hqKFHNYLxgtk8NURxZ3IZwD3F6NtxbXZQCnnSi1Lkx+IDohdPlFp222wVALIheZJQSEg==",
       "dev": true,
-      "license": "MIT",
       "dependencies": {
         "color-convert": "^2.0.1"
       },
@@ -1695,8 +1677,7 @@
       "version": "2.0.1",
       "resolved": "https://registry.npmjs.org/argparse/-/argparse-2.0.1.tgz",
       "integrity": "sha512-8+9WqebbFzpX9OR+Wa6O29asIogeRMzcGtAINdpMHHyAg10f05aSFVBbcEqGf/PXw1EjAZ+q2/bEBg3DvurK3Q==",
-      "dev": true,
-      "license": "Python-2.0"
+      "dev": true
     },
     "node_modules/assertion-error": {
       "version": "2.0.1",
@@ -1733,8 +1714,7 @@
       "version": "1.0.2",
       "resolved": "https://registry.npmjs.org/balanced-match/-/balanced-match-1.0.2.tgz",
       "integrity": "sha512-3oSeUO0TMV67hN1AmbXsK4yaqU7tjiHlbxRDZOpH0KW9+CeX4bRAaX0Anxt0tx2MrpRpWwQaPwIlISEJhYU5Pw==",
-      "dev": true,
-      "license": "MIT"
+      "dev": true
     },
     "node_modules/base64-js": {
       "version": "1.5.1",
@@ -1792,7 +1772,6 @@
       "resolved": "https://registry.npmjs.org/brace-expansion/-/brace-expansion-1.1.12.tgz",
       "integrity": "sha512-9T9UjW3r0UW5c1Q7GTwllptXwhvYmEzFhzMfZ9H7FQWt+uZePjZPjBP/W1ZEyZ1twGWom5/56TF4lPcqjnDHcg==",
       "dev": true,
-      "license": "MIT",
       "dependencies": {
         "balanced-match": "^1.0.0",
         "concat-map": "0.0.1"
@@ -1827,7 +1806,6 @@
       "resolved": "https://registry.npmjs.org/callsites/-/callsites-3.1.0.tgz",
       "integrity": "sha512-P8BjAsXvZS+VIDUI11hHCQEv74YT67YUi5JJFNWIqL235sBmjX4+qx9Muvls5ivyNENctx46xQLQ3aTuE7ssaQ==",
       "dev": true,
-      "license": "MIT",
       "engines": {
         "node": ">=6"
       }
@@ -1847,7 +1825,6 @@
       "resolved": "https://registry.npmjs.org/chalk/-/chalk-4.1.2.tgz",
       "integrity": "sha512-oKnbhFyRIXpUuez8iBMmyEa4nbj4IOQyuhc/wy9kY7/WVPcwIO9VA668Pu8RkO7+0G76SLROeyw9CpQ061i4mA==",
       "dev": true,
-      "license": "MIT",
       "dependencies": {
         "ansi-styles": "^4.1.0",
         "supports-color": "^7.1.0"
@@ -1870,7 +1847,6 @@
       "resolved": "https://registry.npmjs.org/color-convert/-/color-convert-2.0.1.tgz",
       "integrity": "sha512-RRECPsj7iu/xb5oKYcsFHSppFNnsj/52OVTRKb4zP5onXwVF3zVmmToNcOfGC+CRDpfK/U584fMg38ZHCaElKQ==",
       "dev": true,
-      "license": "MIT",
       "dependencies": {
         "color-name": "~1.1.4"
       },
@@ -1882,8 +1858,7 @@
       "version": "1.1.4",
       "resolved": "https://registry.npmjs.org/color-name/-/color-name-1.1.4.tgz",
       "integrity": "sha512-dOy+3AuW3a2wNbZHIuMZpTcgjGuLU/uBL/ubcZF9OXbDo8ff4O8yVp5Bf0efS8uEoYo5q4Fx7dY9OgQGXgAsQA==",
-      "dev": true,
-      "license": "MIT"
+      "dev": true
     },
     "node_modules/colorette": {
       "version": "2.0.20",
@@ -1895,8 +1870,7 @@
       "version": "0.0.1",
       "resolved": "https://registry.npmjs.org/concat-map/-/concat-map-0.0.1.tgz",
       "integrity": "sha512-/Srv4dswyQNBfohGpz9o6Yb3Gz3SrUDqBH5rTuhGR7ahtlbYKnVxw2bCFMRljaA7EXHaXZ8wsHdodFvbkhKmqg==",
-      "dev": true,
-      "license": "MIT"
+      "dev": true
     },
     "node_modules/cron-parser": {
       "version": "5.5.0",
@@ -1915,7 +1889,6 @@
       "resolved": "https://registry.npmjs.org/cross-spawn/-/cross-spawn-7.0.6.tgz",
       "integrity": "sha512-uV2QOWP2nWzsy2aMp8aRibhi9dlzF5Hgh5SHaB9OiTGEyDTiJJyx0uy51QXdyWbtAHNua4XJzUKca3OzKUd3vA==",
       "dev": true,
-      "license": "MIT",
       "dependencies": {
         "path-key": "^3.1.0",
         "shebang-command": "^2.0.0",
@@ -1938,7 +1911,6 @@
       "version": "4.4.3",
       "resolved": "https://registry.npmjs.org/debug/-/debug-4.4.3.tgz",
       "integrity": "sha512-RGwwWnwQvkVfavKVt22FGLw+xYSdzARwm0ru6DhTVA3umU5hZc28V3kO4stgYryrTlLpuvgI9GiijltAjNbcqA==",
-      "dev": true,
       "license": "MIT",
       "dependencies": {
         "ms": "^2.1.3"
@@ -1980,8 +1952,7 @@
       "version": "0.1.4",
       "resolved": "https://registry.npmjs.org/deep-is/-/deep-is-0.1.4.tgz",
       "integrity": "sha512-oIPzksmTg4/MriiaYGO+okXDT7ztn/w3Eptv/+gSIdMdKsJo0u4CfYNFJPy+4SKMuCqGw2wxnA+URMg3t8a/bQ==",
-      "dev": true,
-      "license": "MIT"
+      "dev": true
     },
     "node_modules/detect-libc": {
       "version": "2.1.2",
@@ -2055,7 +2026,6 @@
       "resolved": "https://registry.npmjs.org/escape-string-regexp/-/escape-string-regexp-4.0.0.tgz",
       "integrity": "sha512-TtpcNJ3XAzx3Gq8sWRzJaVajRs0uVxA2YAkdb1jm2YkPz4G6egUFAyA3n5vtEIZefPk5Wa4UXbKuS5fKkJWdgA==",
       "dev": true,
-      "license": "MIT",
       "engines": {
         "node": ">=10"
       },
@@ -2068,7 +2038,6 @@
       "resolved": "https://registry.npmjs.org/eslint/-/eslint-9.39.4.tgz",
       "integrity": "sha512-XoMjdBOwe/esVgEvLmNsD3IRHkm7fbKIUGvrleloJXUZgDHig2IPWNniv+GwjyJXzuNqVjlr5+4yVUZjycJwfQ==",
       "dev": true,
-      "license": "MIT",
       "dependencies": {
         "@eslint-community/eslint-utils": "^4.8.0",
         "@eslint-community/regexpp": "^4.12.1",
@@ -2128,7 +2097,6 @@
       "resolved": "https://registry.npmjs.org/eslint-plugin-no-catch-all/-/eslint-plugin-no-catch-all-1.1.0.tgz",
       "integrity": "sha512-VkP62jLTmccPrFGN/W6V7a3SEwdtTZm+Su2k4T3uyJirtkm0OMMm97h7qd8pRFAHus/jQg9FpUpLRc7sAylBEQ==",
       "dev": true,
-      "license": "MIT",
       "peerDependencies": {
         "eslint": ">=2.0.0"
       }
@@ -2138,7 +2106,6 @@
       "resolved": "https://registry.npmjs.org/eslint-scope/-/eslint-scope-8.4.0.tgz",
       "integrity": "sha512-sNXOfKCn74rt8RICKMvJS7XKV/Xk9kA7DyJr8mJik3S7Cwgy3qlkkmyS2uQB3jiJg6VNdZd/pDBJu0nvG2NlTg==",
       "dev": true,
-      "license": "BSD-2-Clause",
       "dependencies": {
         "esrecurse": "^4.3.0",
         "estraverse": "^5.2.0"
@@ -2155,7 +2122,6 @@
       "resolved": "https://registry.npmjs.org/eslint-visitor-keys/-/eslint-visitor-keys-4.2.1.tgz",
       "integrity": "sha512-Uhdk5sfqcee/9H/rCOJikYz67o0a2Tw2hGRPOG2Y1R2dg7brRe1uG0yaNQDHu+TO/uQPF/5eCapvYSmHUjt7JQ==",
       "dev": true,
-      "license": "Apache-2.0",
       "engines": {
         "node": "^18.18.0 || ^20.9.0 || >=21.1.0"
       },
@@ -2168,7 +2134,6 @@
       "resolved": "https://registry.npmjs.org/espree/-/espree-10.4.0.tgz",
       "integrity": "sha512-j6PAQ2uUr79PZhBjP5C5fhl8e39FmRnOjsD5lGnWrFU8i2G776tBK7+nP8KuQUTTyAZUwfQqXAgrVH5MbH9CYQ==",
       "dev": true,
-      "license": "BSD-2-Clause",
       "dependencies": {
         "acorn": "^8.15.0",
         "acorn-jsx": "^5.3.2",
@@ -2186,7 +2151,6 @@
       "resolved": "https://registry.npmjs.org/esquery/-/esquery-1.7.0.tgz",
       "integrity": "sha512-Ap6G0WQwcU/LHsvLwON1fAQX9Zp0A2Y6Y/cJBl9r/JbW90Zyg4/zbG6zzKa2OTALELarYHmKu0GhpM5EO+7T0g==",
       "dev": true,
-      "license": "BSD-3-Clause",
       "dependencies": {
         "estraverse": "^5.1.0"
       },
@@ -2199,7 +2163,6 @@
       "resolved": "https://registry.npmjs.org/esrecurse/-/esrecurse-4.3.0.tgz",
       "integrity": "sha512-KmfKL3b6G+RXvP8N1vr3Tq1kL/oCFgn2NYXEtqP8/L3pKapUA4G8cFVaoF3SU323CD4XypR/ffioHmkti6/Tag==",
       "dev": true,
-      "license": "BSD-2-Clause",
       "dependencies": {
         "estraverse": "^5.2.0"
       },
@@ -2212,7 +2175,6 @@
       "resolved": "https://registry.npmjs.org/estraverse/-/estraverse-5.3.0.tgz",
       "integrity": "sha512-MMdARuVEQziNTeJD8DgMqmhwR11BRQ/cBP+pLtYdSTnf3MIO8fFeiINEbX36ZdNlfU/7A9f3gUw49B3oQsvwBA==",
       "dev": true,
-      "license": "BSD-2-Clause",
       "engines": {
         "node": ">=4.0"
       }
@@ -2232,11 +2194,19 @@
       "resolved": "https://registry.npmjs.org/esutils/-/esutils-2.0.3.tgz",
       "integrity": "sha512-kVscqXk4OCp68SZ0dkgEKVi6/8ij300KBWTJq32P/dYeWTSwK41WyTxalN1eRmA5Z9UU/LX9D7FWSmV9SAYx6g==",
       "dev": true,
-      "license": "BSD-2-Clause",
       "engines": {
         "node": ">=0.10.0"
       }
     },
+    "node_modules/event-target-shim": {
+      "version": "5.0.1",
+      "resolved": "https://registry.npmjs.org/event-target-shim/-/event-target-shim-5.0.1.tgz",
+      "integrity": "sha512-i/2XbnSz/uxRCU6+NdVJgKWDTM427+MqYbkQzD321DuCQJUqOuJKIA0IM2+W2xtYHdKOmZ4dR6fExsd4SXL+WQ==",
+      "license": "MIT",
+      "engines": {
+        "node": ">=6"
+      }
+    },
     "node_modules/expand-template": {
       "version": "2.0.3",
       "resolved": "https://registry.npmjs.org/expand-template/-/expand-template-2.0.3.tgz",
@@ -2266,22 +2236,19 @@
       "version": "3.1.3",
       "resolved": "https://registry.npmjs.org/fast-deep-equal/-/fast-deep-equal-3.1.3.tgz",
       "integrity": "sha512-f3qQ9oQy9j2AhBe/H9VC91wLmKBCCU/gDOnKNAYG5hswO7BLKj09Hc5HYNz9cGI++xlpDCIgDaitVs03ATR84Q==",
-      "dev": true,
-      "license": "MIT"
+      "dev": true
     },
     "node_modules/fast-json-stable-stringify": {
       "version": "2.1.0",
       "resolved": "https://registry.npmjs.org/fast-json-stable-stringify/-/fast-json-stable-stringify-2.1.0.tgz",
       "integrity": "sha512-lhd/wF+Lk98HZoTCtlVraHtfh5XYijIjalXck7saUtuanSDyLMxnHhSXEDJqHxD7msR8D0uCmqlkwjCV8xvwHw==",
-      "dev": true,
-      "license": "MIT"
+      "dev": true
     },
     "node_modules/fast-levenshtein": {
       "version": "2.0.6",
       "resolved": "https://registry.npmjs.org/fast-levenshtein/-/fast-levenshtein-2.0.6.tgz",
       "integrity": "sha512-DCXu6Ifhqcks7TZKY3Hxp3y6qphY5SJZmrWMDrKcERSOXWQdMhU9Ig/PYrzyw/ul9jOIyh0N4M0tbC5hodg8dw==",
-      "dev": true,
-      "license": "MIT"
+      "dev": true
     },
     "node_modules/fast-safe-stringify": {
       "version": "2.1.1",
@@ -2312,7 +2279,6 @@
       "resolved": "https://registry.npmjs.org/file-entry-cache/-/file-entry-cache-8.0.0.tgz",
       "integrity": "sha512-XXTUwCvisa5oacNGRP9SfNtYBNAMi+RPwBFmblZEF7N7swHYQS6/Zfk7SRwx4D5j3CH211YNRco1DEMNVfZCnQ==",
       "dev": true,
-      "license": "MIT",
       "dependencies": {
         "flat-cache": "^4.0.0"
       },
@@ -2331,7 +2297,6 @@
       "resolved": "https://registry.npmjs.org/find-up/-/find-up-5.0.0.tgz",
       "integrity": "sha512-78/PXT1wlLLDgTzDs7sjq9hzz0vXD+zn+7wypEe4fXQxCmdmqfGsEPQxmiCSQI3ajFV91bVSsvNtrJRiW6nGng==",
       "dev": true,
-      "license": "MIT",
       "dependencies": {
         "locate-path": "^6.0.0",
         "path-exists": "^4.0.0"
@@ -2348,7 +2313,6 @@
       "resolved": "https://registry.npmjs.org/flat-cache/-/flat-cache-4.0.1.tgz",
       "integrity": "sha512-f7ccFPK3SXFHpx15UIGyRJ/FJQctuKZ0zVuN3frBo4HnK3cay9VEW0R6yPYFHC0AgqhukPzKjq22t5DmAyqGyw==",
       "dev": true,
-      "license": "MIT",
       "dependencies": {
         "flatted": "^3.2.9",
         "keyv": "^4.5.4"
@@ -2361,8 +2325,7 @@
       "version": "3.4.2",
       "resolved": "https://registry.npmjs.org/flatted/-/flatted-3.4.2.tgz",
       "integrity": "sha512-PjDse7RzhcPkIJwy5t7KPWQSZ9cAbzQXcafsetQoD7sOJRQlGikNbx7yZp2OotDnJyrDcbyRq3Ttb18iYOqkxA==",
-      "dev": true,
-      "license": "ISC"
+      "dev": true
     },
     "node_modules/fs-constants": {
       "version": "1.0.0",
@@ -2409,7 +2372,6 @@
       "resolved": "https://registry.npmjs.org/glob-parent/-/glob-parent-6.0.2.tgz",
       "integrity": "sha512-XxwI8EOhVQgWp6iDL+3b0r86f4d6AX6zSU55HfB4ydCEuXLXc5FcYeOu+nnGftS4TEju/11rt4KJPTMgbfmv4A==",
       "dev": true,
-      "license": "ISC",
       "dependencies": {
         "is-glob": "^4.0.3"
       },
@@ -2422,7 +2384,6 @@
       "resolved": "https://registry.npmjs.org/globals/-/globals-15.15.0.tgz",
       "integrity": "sha512-7ACyT3wmyp3I61S4fG682L0VA2RGD9otkqGJIwNUMF1SWUombIIk+af1unuDYgMm082aHYwD+mzJvv9Iu8dsgg==",
       "dev": true,
-      "license": "MIT",
       "engines": {
         "node": ">=18"
       },
@@ -2430,6 +2391,21 @@
         "url": "https://github.com/sponsors/sindresorhus"
       }
     },
+    "node_modules/grammy": {
+      "version": "1.41.1",
+      "resolved": "https://registry.npmjs.org/grammy/-/grammy-1.41.1.tgz",
+      "integrity": "sha512-wcHAQ1e7svL3fJMpDchcQVcWUmywhuepOOjHUHmMmWAwUJEIyK5ea5sbSjZd+Gy1aMpZeP8VYJa+4tP+j1YptQ==",
+      "license": "MIT",
+      "dependencies": {
+        "@grammyjs/types": "3.25.0",
+        "abort-controller": "^3.0.0",
+        "debug": "^4.4.3",
+        "node-fetch": "^2.7.0"
+      },
+      "engines": {
+        "node": "^12.20.0 || >=14.13.1"
+      }
+    },
     "node_modules/has-flag": {
       "version": "4.0.0",
       "resolved": "https://registry.npmjs.org/has-flag/-/has-flag-4.0.0.tgz",
@@ -2494,7 +2470,6 @@
       "resolved": "https://registry.npmjs.org/ignore/-/ignore-5.3.2.tgz",
       "integrity": "sha512-hsBTNUqQTDwkWtcdYI2i06Y/nUBEsNEDJKjWdigLvegy8kDuJAS8uRlpkkcQpyEXL0Z/pjDy5HBmMjRCJ2gq+g==",
       "dev": true,
-      "license": "MIT",
       "engines": {
         "node": ">= 4"
       }
@@ -2504,7 +2479,6 @@
       "resolved": "https://registry.npmjs.org/import-fresh/-/import-fresh-3.3.1.tgz",
       "integrity": "sha512-TR3KfrTZTYLPB6jUjfx6MF9WcWrHL9su5TObK4ZkYgBdWKPOFoSoQIdEuTuR82pmtxH2spWG9h6etwfr1pLBqQ==",
       "dev": true,
-      "license": "MIT",
       "dependencies": {
         "parent-module": "^1.0.0",
         "resolve-from": "^4.0.0"
@@ -2521,7 +2495,6 @@
       "resolved": "https://registry.npmjs.org/imurmurhash/-/imurmurhash-0.1.4.tgz",
       "integrity": "sha512-JmXMZ6wuvDmLiHEml9ykzqO6lwFbof0GG4IkcGaENdCRDDmMVnny7s5HsIgHCbaq0w2MyPhDqkhTUgS2LU2PHA==",
       "dev": true,
-      "license": "MIT",
       "engines": {
         "node": ">=0.8.19"
       }
@@ -2543,7 +2516,6 @@
       "resolved": "https://registry.npmjs.org/is-extglob/-/is-extglob-2.1.1.tgz",
       "integrity": "sha512-SbKbANkN603Vi4jEZv49LeVJMn4yGwsbzZworEoyEiutsN3nJYdbO36zfhGJ6QEDpOZIFkDtnq5JRxmvl3jsoQ==",
       "dev": true,
-      "license": "MIT",
       "engines": {
         "node": ">=0.10.0"
       }
@@ -2553,7 +2525,6 @@
       "resolved": "https://registry.npmjs.org/is-glob/-/is-glob-4.0.3.tgz",
       "integrity": "sha512-xelSayHH36ZgE7ZWhli7pW34hNbNl8Ojv5KVmkJD4hBdD3th8Tfk9vYasLM+mXWOZhFkgZfxhLSnrwRr4elSSg==",
       "dev": true,
-      "license": "MIT",
       "dependencies": {
         "is-extglob": "^2.1.1"
       },
@@ -2565,8 +2536,7 @@
       "version": "2.0.0",
       "resolved": "https://registry.npmjs.org/isexe/-/isexe-2.0.0.tgz",
       "integrity": "sha512-RHxMLp9lnKHGHRng9QFhRCMbYAcVpn69smSGcq3f36xjgVVWThj4qqLbTLlq7Ssj8B+fIQ1EuCEGI2lKsyQeIw==",
-      "dev": true,
-      "license": "ISC"
+      "dev": true
     },
     "node_modules/istanbul-lib-coverage": {
       "version": "3.2.2",
@@ -2628,7 +2598,6 @@
       "resolved": "https://registry.npmjs.org/js-yaml/-/js-yaml-4.1.1.tgz",
       "integrity": "sha512-qQKT4zQxXl8lLwBtHMWwaTcGfFOZviOJet3Oy/xmGk2gZH677CJM9EvtfdSkgWcATZhj/55JZ0rmy3myCT5lsA==",
       "dev": true,
-      "license": "MIT",
       "dependencies": {
         "argparse": "^2.0.1"
       },
@@ -2640,29 +2609,25 @@
       "version": "3.0.1",
       "resolved": "https://registry.npmjs.org/json-buffer/-/json-buffer-3.0.1.tgz",
       "integrity": "sha512-4bV5BfR2mqfQTJm+V5tPPdf+ZpuhiIvTuAB5g8kcrXOZpTT/QwwVRWBywX1ozr6lEuPdbHxwaJlm9G6mI2sfSQ==",
-      "dev": true,
-      "license": "MIT"
+      "dev": true
     },
     "node_modules/json-schema-traverse": {
       "version": "0.4.1",
       "resolved": "https://registry.npmjs.org/json-schema-traverse/-/json-schema-traverse-0.4.1.tgz",
       "integrity": "sha512-xbbCH5dCYU5T8LcEhhuh7HJ88HXuW3qsI3Y0zOZFKfZEHcpWiHU/Jxzk629Brsab/mMiHQti9wMP+845RPe3Vg==",
-      "dev": true,
-      "license": "MIT"
+      "dev": true
     },
     "node_modules/json-stable-stringify-without-jsonify": {
       "version": "1.0.1",
       "resolved": "https://registry.npmjs.org/json-stable-stringify-without-jsonify/-/json-stable-stringify-without-jsonify-1.0.1.tgz",
       "integrity": "sha512-Bdboy+l7tA3OGW6FjyFHWkP5LuByj1Tk33Ljyq0axyzdk9//JSi2u3fP1QSmd1KNwq6VOKYGlAu87CisVir6Pw==",
-      "dev": true,
-      "license": "MIT"
+      "dev": true
     },
     "node_modules/keyv": {
       "version": "4.5.4",
       "resolved": "https://registry.npmjs.org/keyv/-/keyv-4.5.4.tgz",
       "integrity": "sha512-oxVHkHR/EJf2CNXnWxRLW6mg7JyCCUcG0DtEGmL2ctUo1PNTin1PUil+r/+4r5MpVgC/fn1kjsx7mjSujKqIpw==",
       "dev": true,
-      "license": "MIT",
       "dependencies": {
         "json-buffer": "3.0.1"
       }
@@ -2672,7 +2637,6 @@
       "resolved": "https://registry.npmjs.org/levn/-/levn-0.4.1.tgz",
       "integrity": "sha512-+bT2uH4E5LGE7h/n3evcS/sQlJXCpIp6ym8OWJ5eV6+67Dsql/LaaT7qJBAt2rzfoa/5QBGBhxDix1dMt2kQKQ==",
       "dev": true,
-      "license": "MIT",
       "dependencies": {
         "prelude-ls": "^1.2.1",
         "type-check": "~0.4.0"
@@ -2686,7 +2650,6 @@
       "resolved": "https://registry.npmjs.org/locate-path/-/locate-path-6.0.0.tgz",
       "integrity": "sha512-iPZK6eYjbxRu3uB4/WZ3EsEIMJFMqAoopl3R+zuq0UjcAm/MO6KCweDgPfP3elTztoKP3KtnVHxTn2NHBSDVUw==",
       "dev": true,
-      "license": "MIT",
       "dependencies": {
         "p-locate": "^5.0.0"
       },
@@ -2701,8 +2664,7 @@
       "version": "4.6.2",
       "resolved": "https://registry.npmjs.org/lodash.merge/-/lodash.merge-4.6.2.tgz",
       "integrity": "sha512-0KpjqXRVvrYyCsX1swR/XTK0va6VQkQM6MNo7PqW77ByjAhoARA8EfrP1N4+KlKj8YS0ZUCtRT/YUuhyYDujIQ==",
-      "dev": true,
-      "license": "MIT"
+      "dev": true
     },
     "node_modules/luxon": {
       "version": "3.7.2",
@@ -2768,7 +2730,6 @@
       "resolved": "https://registry.npmjs.org/minimatch/-/minimatch-3.1.5.tgz",
       "integrity": "sha512-VgjWUsnnT6n+NUk6eZq77zeFdpW2LWDzP6zFGrCbHXiYNul5Dzqk2HHQ5uFH2DNW5Xbp8+jVzaeNt94ssEEl4w==",
       "dev": true,
-      "license": "ISC",
       "dependencies": {
         "brace-expansion": "^1.1.7"
       },
@@ -2795,7 +2756,6 @@
       "version": "2.1.3",
       "resolved": "https://registry.npmjs.org/ms/-/ms-2.1.3.tgz",
       "integrity": "sha512-6FlzubTLZG3J2a/NVCAleEhjzq5oxgHyaCU9yYXvcLsvoVaHJq/s5xXI6/XXP6tz7R9xAOtHnSO/tXtF3WRTlA==",
-      "dev": true,
       "license": "MIT"
     },
     "node_modules/nanoid": {
@@ -2827,8 +2787,7 @@
       "version": "1.4.0",
       "resolved": "https://registry.npmjs.org/natural-compare/-/natural-compare-1.4.0.tgz",
       "integrity": "sha512-OWND8ei3VtNC9h7V60qff3SVobHr996CTwgxubgyQYEpg290h9J0buyECNNJexkFm5sOajh5G116RYA1c8ZMSw==",
-      "dev": true,
-      "license": "MIT"
+      "dev": true
     },
     "node_modules/node-abi": {
       "version": "3.87.0",
@@ -2842,6 +2801,26 @@
         "node": ">=10"
       }
     },
+    "node_modules/node-fetch": {
+      "version": "2.7.0",
+      "resolved": "https://registry.npmjs.org/node-fetch/-/node-fetch-2.7.0.tgz",
+      "integrity": "sha512-c4FRfUm/dbcWZ7U+1Wq0AwCyFL+3nt2bEw05wfxSz+DWpWsitgmSgYmy2dQdWyKC1694ELPqMs/YzUSNozLt8A==",
+      "license": "MIT",
+      "dependencies": {
+        "whatwg-url": "^5.0.0"
+      },
+      "engines": {
+        "node": "4.x || >=6.0.0"
+      },
+      "peerDependencies": {
+        "encoding": "^0.1.0"
+      },
+      "peerDependenciesMeta": {
+        "encoding": {
+          "optional": true
+        }
+      }
+    },
     "node_modules/obug": {
       "version": "2.1.1",
       "resolved": "https://registry.npmjs.org/obug/-/obug-2.1.1.tgz",
@@ -2876,7 +2855,6 @@
       "resolved": "https://registry.npmjs.org/optionator/-/optionator-0.9.4.tgz",
       "integrity": "sha512-6IpQ7mKUxRcZNLIObR0hz7lxsapSSIYNZJwXPGeF0mTVqGKFIXj1DQcMoT22S3ROcLyY/rz0PWaWZ9ayWmad9g==",
       "dev": true,
-      "license": "MIT",
       "dependencies": {
         "deep-is": "^0.1.3",
         "fast-levenshtein": "^2.0.6",
@@ -2894,7 +2872,6 @@
       "resolved": "https://registry.npmjs.org/p-limit/-/p-limit-3.1.0.tgz",
       "integrity": "sha512-TYOanM3wGwNGsZN2cVTYPArw454xnXj5qmWF1bEoAc4+cU/ol7GVh7odevjp1FNHduHc3KZMcFduxU5Xc6uJRQ==",
       "dev": true,
-      "license": "MIT",
       "dependencies": {
         "yocto-queue": "^0.1.0"
       },
@@ -2910,7 +2887,6 @@
       "resolved": "https://registry.npmjs.org/p-locate/-/p-locate-5.0.0.tgz",
       "integrity": "sha512-LaNjtRWUBY++zB5nE/NwcaoMylSPk+S+ZHNB1TzdbMJMny6dynpAGt7X/tl/QYq3TIeE6nxHppbo2LGymrG5Pw==",
       "dev": true,
-      "license": "MIT",
       "dependencies": {
         "p-limit": "^3.0.2"
       },
@@ -2926,7 +2902,6 @@
       "resolved": "https://registry.npmjs.org/parent-module/-/parent-module-1.0.1.tgz",
       "integrity": "sha512-GQ2EWRpQV8/o+Aw8YqtfZZPfNRWZYkbidE9k5rpl/hC3vtHHBfGm2Ifi6qWV+coDGkrUKZAxE3Lot5kcsRlh+g==",
       "dev": true,
-      "license": "MIT",
       "dependencies": {
         "callsites": "^3.0.0"
       },
@@ -2939,7 +2914,6 @@
       "resolved": "https://registry.npmjs.org/path-exists/-/path-exists-4.0.0.tgz",
       "integrity": "sha512-ak9Qy5Q7jYb2Wwcey5Fpvg2KoAc/ZIhLSLOSBmRmygPsGwkVVt0fZa0qrtMz+m6tJTAHfZQ8FnmB4MG4LWy7/w==",
       "dev": true,
-      "license": "MIT",
       "engines": {
         "node": ">=8"
       }
@@ -2949,7 +2923,6 @@
       "resolved": "https://registry.npmjs.org/path-key/-/path-key-3.1.1.tgz",
       "integrity": "sha512-ojmeN0qd+y0jszEtoY48r0Peq5dwMEkIlCOu6Q5f41lfkswXuKtYrhgoTpLnyIcHm24Uhqx+5Tqm2InSwLhE6Q==",
       "dev": true,
-      "license": "MIT",
       "engines": {
         "node": ">=8"
       }
@@ -3111,7 +3084,6 @@
       "resolved": "https://registry.npmjs.org/prelude-ls/-/prelude-ls-1.2.1.tgz",
       "integrity": "sha512-vkcDPrRZo1QZLbn5RLGPpg/WmIQ65qoWWhcGKf/b5eplkkarX0m9z8ppCat4mlOqUsWpyNuYgO3VRyrYHSzX5g==",
       "dev": true,
-      "license": "MIT",
       "engines": {
         "node": ">= 0.8.0"
       }
@@ -3163,7 +3135,6 @@
       "resolved": "https://registry.npmjs.org/punycode/-/punycode-2.3.1.tgz",
       "integrity": "sha512-vYt7UD1U9Wg6138shLtLOvdAu+8DsC/ilFtEVHcH+wydcSpNE20AfSOduf6MkRFahL5FY7X1oU7nKVZFtfq8Fg==",
       "dev": true,
-      "license": "MIT",
       "engines": {
         "node": ">=6"
       }
@@ -3226,7 +3197,6 @@
       "resolved": "https://registry.npmjs.org/resolve-from/-/resolve-from-4.0.0.tgz",
       "integrity": "sha512-pb/MYmXstAkysRFx8piNI1tGFNQIFA3vkE3Gq4EuA1dF6gHp/+vgZqsCGJapvy8N3Q+4o7FwvquPJcnZ7RYy4g==",
       "dev": true,
-      "license": "MIT",
       "engines": {
         "node": ">=4"
       }
@@ -3348,7 +3318,6 @@
       "resolved": "https://registry.npmjs.org/shebang-command/-/shebang-command-2.0.0.tgz",
       "integrity": "sha512-kHxr2zZpYtdmrN1qDjrrX/Z1rR1kG8Dx+gkpK1G4eXmvXswmcE1hTWBWYUzlraYw1/yZp6YuDY77YtvbN0dmDA==",
       "dev": true,
-      "license": "MIT",
       "dependencies": {
         "shebang-regex": "^3.0.0"
       },
@@ -3361,7 +3330,6 @@
       "resolved": "https://registry.npmjs.org/shebang-regex/-/shebang-regex-3.0.0.tgz",
       "integrity": "sha512-7++dFhtcx3353uBaq8DDR4NuxBetBzC7ZQOhmTQInHEd6bSrXdiEyzCvG07Z44UYdLShWUyXt5M/yhz8ekcb1A==",
       "dev": true,
-      "license": "MIT",
       "engines": {
         "node": ">=8"
       }
@@ -3575,12 +3543,17 @@
         "node": ">=14.0.0"
       }
     },
+    "node_modules/tr46": {
+      "version": "0.0.3",
+      "resolved": "https://registry.npmjs.org/tr46/-/tr46-0.0.3.tgz",
+      "integrity": "sha512-N3WMsuqV66lT30CrXNbEjx4GEwlow3v6rr4mCcv6prnfwhS01rkgyFdjPNBYd9br7LpXV1+Emh01fHnq2Gdgrw==",
+      "license": "MIT"
+    },
     "node_modules/ts-api-utils": {
       "version": "2.5.0",
       "resolved": "https://registry.npmjs.org/ts-api-utils/-/ts-api-utils-2.5.0.tgz",
       "integrity": "sha512-OJ/ibxhPlqrMM0UiNHJ/0CKQkoKF243/AEmplt3qpRgkW8VG7IfOS41h7V8TjITqdByHzrjcS/2si+y4lIh8NA==",
       "dev": true,
-      "license": "MIT",
       "engines": {
         "node": ">=18.12"
       },
@@ -3625,7 +3598,6 @@
       "resolved": "https://registry.npmjs.org/type-check/-/type-check-0.4.0.tgz",
       "integrity": "sha512-XleUoc9uwGXqjWwXaUTZAmzMcFZ5858QA2vvx1Ur5xIcixXIP+8LnFDgRplU30us6teqdlskFfu+ae4K79Ooew==",
       "dev": true,
-      "license": "MIT",
       "dependencies": {
         "prelude-ls": "^1.2.1"
       },
@@ -3648,16 +3620,15 @@
       }
     },
     "node_modules/typescript-eslint": {
-      "version": "8.57.1",
-      "resolved": "https://registry.npmjs.org/typescript-eslint/-/typescript-eslint-8.57.1.tgz",
-      "integrity": "sha512-fLvZWf+cAGw3tqMCYzGIU6yR8K+Y9NT2z23RwOjlNFF2HwSB3KhdEFI5lSBv8tNmFkkBShSjsCjzx1vahZfISA==",
+      "version": "8.57.2",
+      "resolved": "https://registry.npmjs.org/typescript-eslint/-/typescript-eslint-8.57.2.tgz",
+      "integrity": "sha512-VEPQ0iPgWO/sBaZOU1xo4nuNdODVOajPnTIbog2GKYr31nIlZ0fWPoCQgGfF3ETyBl1vn63F/p50Um9Z4J8O8A==",
       "dev": true,
-      "license": "MIT",
       "dependencies": {
-        "@typescript-eslint/eslint-plugin": "8.57.1",
-        "@typescript-eslint/parser": "8.57.1",
-        "@typescript-eslint/typescript-estree": "8.57.1",
-        "@typescript-eslint/utils": "8.57.1"
+        "@typescript-eslint/eslint-plugin": "8.57.2",
+        "@typescript-eslint/parser": "8.57.2",
+        "@typescript-eslint/typescript-estree": "8.57.2",
+        "@typescript-eslint/utils": "8.57.2"
       },
       "engines": {
         "node": "^18.18.0 || ^20.9.0 || >=21.1.0"
@@ -3683,7 +3654,6 @@
       "resolved": "https://registry.npmjs.org/uri-js/-/uri-js-4.4.1.tgz",
       "integrity": "sha512-7rKUyy33Q1yc98pQ1DAmLtwX109F7TIfWlW1Ydo8Wl1ii1SeHieeh0HHfPeL2fMXK6z0s8ecKs9frCuLJvndBg==",
       "dev": true,
-      "license": "BSD-2-Clause",
       "dependencies": {
         "punycode": "^2.1.0"
       }
@@ -3847,12 +3817,27 @@
         }
       }
     },
+    "node_modules/webidl-conversions": {
+      "version": "3.0.1",
+      "resolved": "https://registry.npmjs.org/webidl-conversions/-/webidl-conversions-3.0.1.tgz",
+      "integrity": "sha512-2JAn3z8AR6rjK8Sm8orRC0h/bcl/DqL7tRPdGZ4I1CjdF+EaMLmYxBHyXuKL849eucPFhvBoxMsflfOb8kxaeQ==",
+      "license": "BSD-2-Clause"
+    },
+    "node_modules/whatwg-url": {
+      "version": "5.0.0",
+      "resolved": "https://registry.npmjs.org/whatwg-url/-/whatwg-url-5.0.0.tgz",
+      "integrity": "sha512-saE57nupxk6v3HY35+jzBwYa0rKSy0XR8JSxZPwgLr7ys0IBzhGviA1/TUGJLmSVqs8pb9AnvICXEuOHLprYTw==",
+      "license": "MIT",
+      "dependencies": {
+        "tr46": "~0.0.3",
+        "webidl-conversions": "^3.0.0"
+      }
+    },
     "node_modules/which": {
       "version": "2.0.2",
       "resolved": "https://registry.npmjs.org/which/-/which-2.0.2.tgz",
       "integrity": "sha512-BLI3Tl1TW3Pvl70l3yq3Y64i+awpwXqsGBYWkkqMtnbXgrMD+yj7rhW0kuEDxzJaYXGjEW5ogapKNMEKNMjibA==",
       "dev": true,
-      "license": "ISC",
       "dependencies": {
         "isexe": "^2.0.0"
       },
@@ -3885,7 +3870,6 @@
       "resolved": "https://registry.npmjs.org/word-wrap/-/word-wrap-1.2.5.tgz",
       "integrity": "sha512-BN22B5eaMMI9UMtjrGd5g5eCYPpCPDUy0FJXbYsaT5zYxjFOckS53SQDE3pWkVoWpHXVb3BrYcEN4Twa55B5cA==",
       "dev": true,
-      "license": "MIT",
       "engines": {
         "node": ">=0.10.0"
       }
@@ -3916,7 +3900,6 @@
       "resolved": "https://registry.npmjs.org/yocto-queue/-/yocto-queue-0.1.0.tgz",
       "integrity": "sha512-rVksvsnNCdJ/ohGc6xgPwyN8eheCxsiLM8mxuE/t/mOVqJewPuO1miLpTHQiRgTKCLexL4MeAFVagts7HmNZ2Q==",
       "dev": true,
-      "license": "MIT",
       "engines": {
         "node": ">=10"
       },
diff --git a/package.json b/package.json
index ed96d45..b710e94 100644
--- a/package.json
+++ b/package.json
@@ -23,12 +23,12 @@
   "dependencies": {
     "@onecli-sh/sdk": "^0.2.0",
     "better-sqlite3": "^11.8.1",
-    "grammy": "^1.39.3",
     "cron-parser": "^5.5.0",
     "pino": "^9.6.0",
     "pino-pretty": "^13.0.0",
     "yaml": "^2.8.2",
-    "zod": "^4.3.6"
+    "zod": "^4.3.6",
+    "grammy": "^1.39.3"
   },
   "devDependencies": {
     "@eslint/js": "^9.35.0",
diff --git a/setup/index.ts b/setup/index.ts
index 7ac13e2..7e10ddc 100644
--- a/setup/index.ts
+++ b/setup/index.ts
@@ -9,6 +9,7 @@ const STEPS: Record<
   string,
   () => Promise<{ run: (args: string[]) => Promise<void> }>
 > = {
+  timezone: () => import('./timezone.js'),
   environment: () => import('./environment.js'),
   container: () => import('./container.js'),
   groups: () => import('./groups.js'),
diff --git a/setup/timezone.ts b/setup/timezone.ts
new file mode 100644
index 0000000..22c0394
--- /dev/null
+++ b/setup/timezone.ts
@@ -0,0 +1,67 @@
+/**
+ * Step: timezone — Detect, validate, and persist the user's timezone.
+ * Writes TZ to .env if a valid IANA timezone is resolved.
+ * Emits NEEDS_USER_INPUT=true when autodetection fails.
+ */
+import fs from 'fs';
+import path from 'path';
+
+import { isValidTimezone } from '../src/timezone.js';
+import { logger } from '../src/logger.js';
+import { emitStatus } from './status.js';
+
+export async function run(args: string[]): Promise<void> {
+  const projectRoot = process.cwd();
+  const envFile = path.join(projectRoot, '.env');
+
+  // Check what's already in .env
+  let envFileTz: string | undefined;
+  if (fs.existsSync(envFile)) {
+    const content = fs.readFileSync(envFile, 'utf-8');
+    const match = content.match(/^TZ=(.+)$/m);
+    if (match) envFileTz = match[1].trim().replace(/^["']|["']$/g, '');
+  }
+
+  const systemTz = Intl.DateTimeFormat().resolvedOptions().timeZone;
+  const envTz = process.env.TZ;
+
+  // Accept --tz flag from CLI (used when setup skill collects from user)
+  const tzFlagIdx = args.indexOf('--tz');
+  const userTz = tzFlagIdx !== -1 ? args[tzFlagIdx + 1] : undefined;
+
+  // Resolve: user-provided > .env > process.env > system autodetect
+  let resolvedTz: string | undefined;
+  for (const candidate of [userTz, envFileTz, envTz, systemTz]) {
+    if (candidate && isValidTimezone(candidate)) {
+      resolvedTz = candidate;
+      break;
+    }
+  }
+
+  const needsUserInput = !resolvedTz;
+
+  if (resolvedTz && resolvedTz !== envFileTz) {
+    // Write/update TZ in .env
+    if (fs.existsSync(envFile)) {
+      let content = fs.readFileSync(envFile, 'utf-8');
+      if (/^TZ=/m.test(content)) {
+        content = content.replace(/^TZ=.*$/m, `TZ=${resolvedTz}`);
+      } else {
+        content = content.trimEnd() + `\nTZ=${resolvedTz}\n`;
+      }
+      fs.writeFileSync(envFile, content);
+    } else {
+      fs.writeFileSync(envFile, `TZ=${resolvedTz}\n`);
+    }
+    logger.info({ timezone: resolvedTz }, 'Set TZ in .env');
+  }
+
+  emitStatus('TIMEZONE', {
+    SYSTEM_TZ: systemTz || 'unknown',
+    ENV_TZ: envTz || 'unset',
+    ENV_FILE_TZ: envFileTz || 'unset',
+    RESOLVED_TZ: resolvedTz || 'none',
+    NEEDS_USER_INPUT: needsUserInput,
+    STATUS: needsUserInput ? 'needs_input' : 'success',
+  });
+}
diff --git a/src/config.ts b/src/config.ts
index 26f31c2..d5005a0 100644
--- a/src/config.ts
+++ b/src/config.ts
@@ -2,12 +2,14 @@ import os from 'os';
 import path from 'path';
 
 import { readEnvFile } from './env.js';
+import { isValidTimezone } from './timezone.js';
 
 // Read config values from .env (falls back to process.env).
 const envConfig = readEnvFile([
   'ASSISTANT_NAME',
   'ASSISTANT_HAS_OWN_NUMBER',
   'ONECLI_URL',
+  'TZ',
 ]);
 
 export const ASSISTANT_NAME =
@@ -67,7 +69,17 @@ export const TRIGGER_PATTERN = new RegExp(
   'i',
 );
 
-// Timezone for scheduled tasks (cron expressions, etc.)
-// Uses system timezone by default
-export const TIMEZONE =
-  process.env.TZ || Intl.DateTimeFormat().resolvedOptions().timeZone;
+// Timezone for scheduled tasks, message formatting, etc.
+// Validates each candidate is a real IANA identifier before accepting.
+function resolveConfigTimezone(): string {
+  const candidates = [
+    process.env.TZ,
+    envConfig.TZ,
+    Intl.DateTimeFormat().resolvedOptions().timeZone,
+  ];
+  for (const tz of candidates) {
+    if (tz && isValidTimezone(tz)) return tz;
+  }
+  return 'UTC';
+}
+export const TIMEZONE = resolveConfigTimezone();
diff --git a/src/timezone.test.ts b/src/timezone.test.ts
index df0525f..1003a61 100644
--- a/src/timezone.test.ts
+++ b/src/timezone.test.ts
@@ -1,6 +1,10 @@
 import { describe, it, expect } from 'vitest';
 
-import { formatLocalTime } from './timezone.js';
+import {
+  formatLocalTime,
+  isValidTimezone,
+  resolveTimezone,
+} from './timezone.js';
 
 // --- formatLocalTime ---
 
@@ -26,4 +30,44 @@ describe('formatLocalTime', () => {
     expect(ny).toContain('8:00');
     expect(tokyo).toContain('9:00');
   });
+
+  it('does not throw on invalid timezone, falls back to UTC', () => {
+    expect(() =>
+      formatLocalTime('2026-01-01T00:00:00.000Z', 'IST-2'),
+    ).not.toThrow();
+    const result = formatLocalTime('2026-01-01T12:00:00.000Z', 'IST-2');
+    // Should format as UTC (noon UTC = 12:00 PM)
+    expect(result).toContain('12:00');
+    expect(result).toContain('PM');
+  });
+});
+
+describe('isValidTimezone', () => {
+  it('accepts valid IANA identifiers', () => {
+    expect(isValidTimezone('America/New_York')).toBe(true);
+    expect(isValidTimezone('UTC')).toBe(true);
+    expect(isValidTimezone('Asia/Tokyo')).toBe(true);
+    expect(isValidTimezone('Asia/Jerusalem')).toBe(true);
+  });
+
+  it('rejects invalid timezone strings', () => {
+    expect(isValidTimezone('IST-2')).toBe(false);
+    expect(isValidTimezone('XYZ+3')).toBe(false);
+  });
+
+  it('rejects empty and garbage strings', () => {
+    expect(isValidTimezone('')).toBe(false);
+    expect(isValidTimezone('NotATimezone')).toBe(false);
+  });
+});
+
+describe('resolveTimezone', () => {
+  it('returns the timezone if valid', () => {
+    expect(resolveTimezone('America/New_York')).toBe('America/New_York');
+  });
+
+  it('falls back to UTC for invalid timezone', () => {
+    expect(resolveTimezone('IST-2')).toBe('UTC');
+    expect(resolveTimezone('')).toBe('UTC');
+  });
 });
diff --git a/src/timezone.ts b/src/timezone.ts
index e7569f4..d8cc6cc 100644
--- a/src/timezone.ts
+++ b/src/timezone.ts
@@ -1,11 +1,32 @@
+/**
+ * Check whether a timezone string is a valid IANA identifier
+ * that Intl.DateTimeFormat can use.
+ */
+export function isValidTimezone(tz: string): boolean {
+  try {
+    Intl.DateTimeFormat(undefined, { timeZone: tz });
+    return true;
+  } catch {
+    return false;
+  }
+}
+
+/**
+ * Return the given timezone if valid IANA, otherwise fall back to UTC.
+ */
+export function resolveTimezone(tz: string): string {
+  return isValidTimezone(tz) ? tz : 'UTC';
+}
+
 /**
  * Convert a UTC ISO timestamp to a localized display string.
  * Uses the Intl API (no external dependencies).
+ * Falls back to UTC if the timezone is invalid.
  */
 export function formatLocalTime(utcIso: string, timezone: string): string {
   const date = new Date(utcIso);
   return date.toLocaleString('en-US', {
-    timeZone: timezone,
+    timeZone: resolveTimezone(timezone),
     year: 'numeric',
     month: 'short',
     day: 'numeric',