feat!: upgrade to SDK v2 with scheduled delivery, team API, and batch sending

The module moves to the Lettermint SDK v2: scheduled delivery with
reschedule and cancel through the team API, the full team API client,
key/value tags, per-message settings, batch sending with a batch
idempotency key, and classified error responses.

BREAKING CHANGE: requires Nuxt 4. The send endpoint is no longer
registered by default, tags splits into tag and tags, metadata values
must be primitives, and the response types follow the SDK. See
UPGRADE.md for the migration guide.

Author: Bjornftw

.claude/settings.local.json

@@ -0,0 +1 @@
+* @lettermint/founders

.github/CODEOWNERS

@@ -0,0 +1,19 @@
+version: 2
+updates:
+  - package-ecosystem: npm
+    directory: /
+    schedule:
+      interval: weekly
+    open-pull-requests-limit: 5
+    groups:
+      nuxt:
+        patterns:
+          - '@nuxt/*'
+          - nuxt
+      dev-dependencies:
+        dependency-type: development
+
+  - package-ecosystem: github-actions
+    directory: /
+    schedule:
+      interval: monthly

.github/dependabot.yml

@@ -13,9 +13,9 @@ jobs:
     runs-on: ubuntu-latest
 
     steps:
-      - uses: actions/checkout@v5
+      - uses: actions/checkout@v7
 
-      - uses: actions/setup-node@v4
+      - uses: actions/setup-node@v7
         with:
           node-version: 24
 
@@ -27,15 +27,23 @@ jobs:
       - name: Lint
         run: npm run lint
 
+      - name: Types
+        run: npm run dev:prepare && npm run test:types
+
   test:
     runs-on: ubuntu-latest
 
+    strategy:
+      fail-fast: false
+      matrix:
+        node-version: [22, 24]
+
     steps:
-      - uses: actions/checkout@v5
+      - uses: actions/checkout@v7
 
-      - uses: actions/setup-node@v4
+      - uses: actions/setup-node@v7
         with:
-          node-version: 24
+          node-version: ${{ matrix.node-version }}
 
       - run: npm i -g --force corepack@latest && corepack enable
 

.github/workflows/ci.yml

@@ -0,0 +1,22 @@
+name: release-to-discord
+
+# A release published by release.yml does not fire the release trigger (GitHub
+# suppresses workflows for events its default token causes), so start this by
+# hand after a release: Actions -> release-to-discord -> Run workflow. Same
+# setup as lettermint-node.
+on:
+  release:
+    types: [published]
+  workflow_dispatch:
+
+jobs:
+  github-releases-to-discord:
+    runs-on: ubuntu-latest
+
+    steps:
+      - name: Discord Release Webhook
+        uses: lettermint/action-discord-releases@v1.0.1
+        with:
+          color: '215732'
+          webhook_url: ${{ secrets.DISCORD_RELEASE_WEBHOOK_URL }}
+          content: 'A new release for the Lettermint Nuxt module is now available! ||@Nuxt||'

.github/workflows/release-to-discord.yml

@@ -0,0 +1,45 @@
+name: release
+
+# Manual only. Switch to `push: branches: [main]` to release on every merge.
+on:
+  workflow_dispatch:
+
+permissions:
+  contents: write
+  issues: write
+  pull-requests: write
+  id-token: write
+
+jobs:
+  release:
+    runs-on: ubuntu-latest
+
+    steps:
+      - uses: actions/checkout@v7
+        with:
+          fetch-depth: 0
+
+      - uses: actions/setup-node@v7
+        with:
+          node-version: 24
+          registry-url: 'https://registry.npmjs.org'
+
+      - name: Install dependencies
+        run: npm ci
+
+      - name: Lint
+        run: npm run lint
+
+      - name: Types
+        run: npm run dev:prepare && npm run test:types
+
+      - name: Test
+        run: npm run test
+
+      - name: Build
+        run: npm run prepack
+
+      - name: Release
+        env:
+          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+        run: npx semantic-release

.github/workflows/release.yml

@@ -34,12 +34,10 @@ coverage
 .nyc_output
 
 # VSCode
-.vscode/*
-!.vscode/settings.json
-!.vscode/tasks.json
-!.vscode/launch.json
-!.vscode/extensions.json
-!.vscode/*.code-snippets
+.vscode
+
+# Claude Code
+.claude/settings.local.json
 
 # Intellij idea
 *.iml

.gitignore

@@ -0,0 +1,17 @@
+{
+  "branches": ["main"],
+  "plugins": [
+    "@semantic-release/commit-analyzer",
+    "@semantic-release/release-notes-generator",
+    "@semantic-release/changelog",
+    "@semantic-release/npm",
+    "@semantic-release/github",
+    [
+      "@semantic-release/git",
+      {
+        "assets": ["CHANGELOG.md", "package.json", "package-lock.json"],
+        "message": "chore(release): ${nextRelease.version} [skip ci]\n\n${nextRelease.notes}"
+      }
+    ]
+  ]
+}

.releaserc.json

@@ -0,0 +1,29 @@
+# Changelog
+
+Releases from 2.0.0 onwards are generated by [semantic-release](https://github.com/semantic-release/semantic-release) from the commit history. Earlier entries were written after the fact.
+
+## [1.0.4](https://github.com/lettermint/nuxt-lettermint/commit/d27bf5e) (2026-02-20)
+
+Tagged but never published to npm. Its dependency updates ship with 2.0.0.
+
+## [1.0.3](https://github.com/lettermint/nuxt-lettermint/commit/032a81c) (2026-02-13)
+
+### Miscellaneous
+
+* update dependencies
+
+## [1.0.2](https://github.com/lettermint/nuxt-lettermint/commit/9f3e853) (2025-12-23)
+
+### Miscellaneous
+
+* update dependencies ([#2](https://github.com/lettermint/nuxt-lettermint/pull/2))
+
+## [1.0.1](https://github.com/lettermint/nuxt-lettermint/commit/a1825b8) (2025-09-08)
+
+### Features
+
+* add `autoEndpoint` option to prevent endpoint conflicts ([#1](https://github.com/lettermint/nuxt-lettermint/pull/1))
+
+## [1.0.0](https://github.com/lettermint/nuxt-lettermint/commit/a73053a) (2025-09-02)
+
+Initial release: `useLettermint()` composable, `sendEmail()` server utility and the `/api/lettermint/send` endpoint.