fix: stop dependabot auto-merge from landing breaking majors

Root causes (this round):
- dependabot.yml had been overwritten to a minimal version with NO
  ignore rules -> major bumps allowed (typescript 7, eslint 10, tsparticles 4)
- main branch had NO branch protection -> 'gh pr merge --auto' merged
  even with failing CI
- auto-merge workflow had no check-run verification step

Fixes:
- Branch protection on main: required status check 'lint + typecheck +
  test + build' (strict) so auto-merge cannot land failing changes
- dependabot-auto-merge.yml: verify CI check-run conclusion == success
  (actions/github-script poll with timeout) before enabling auto-merge
- dependabot.yml: restore ignore rules for eslint/typescript/@tsparticles
  majors + eslint-config-next + eslint-plugin-react
- Rollback toolchain to known-good exact pins:
  typescript 6.0.3, eslint 9.39.5, @tsparticles/{react,engine,slim} 3.x
  (exact versions, no ranges dependabot can widen)
- Close dependabot PR #19 (tsparticles 4.4.0)

.github/dependabot-auto-merge.yml

@@ -1,16 +1,53 @@
 name: Dependabot Auto-Merge
+
 on: pull_request
 
 permissions:
   contents: write
   pull-requests: write
+  checks: read
 
 jobs:
   auto-merge:
     runs-on: ubuntu-latest
     if: github.actor == 'dependabot[bot]'
     steps:
+      - name: Verify CI check-runs before enabling auto-merge
+        uses: actions/github-script@v7
+        with:
+          script: |
+            const owner = context.repo.owner;
+            const repo = context.repo.repo;
+            const sha = context.payload.pull_request.head.sha;
+
+            // Wait for in-progress runs (with timeout), then collect conclusions
+            const requiredContext = "lint + typecheck + test + build";
+            let conclusion = null;
+            for (let attempt = 0; attempt < 60; attempt++) {
+              const { data: checks } = await github.rest.checks.listForRef({
+                owner, repo, ref: sha,
+              });
+              const match = checks.check_runs.find(
+                (r) => r.name === requiredContext || r.output?.title === requiredContext
+              );
+              if (match && match.status === "completed") {
+                conclusion = match.conclusion;
+                break;
+              }
+              await new Promise((r) => setTimeout(r, 10000));
+            }
+            if (!conclusion) {
+              core.setFailed(`Required check "${requiredContext}" never completed within timeout.`);
+              return;
+            }
+            if (conclusion !== "success") {
+              core.setFailed(`Required check "${requiredContext}" concluded ${conclusion}. NOT merging.`);
+              return;
+            }
+            core.info(`Check "${requiredContext}" passed — safe to enable auto-merge.`);
+
       - name: Enable auto-merge for Dependabot PR
+        if: success()
         run: gh pr merge --auto --merge "$PR_URL"
         env:
           PR_URL: ${{ github.event.pull_request.html_url }}

.github/dependabot.yml

@@ -5,6 +5,8 @@ updates:
     schedule:
       interval: "daily"
     open-pull-requests-limit: 10
+    labels:
+      - "dependencies"
     groups:
       production:
         dependency-type: "production"
@@ -16,3 +18,40 @@ updates:
         update-types:
           - "minor"
           - "patch"
+    ignore:
+      # ---- Toolchain pins: semver-major bumps break the lint/typecheck stack ----
+      # ESLint 10 dropped rule-context getFilename(); eslint-plugin-react (^7.37.x)
+      # peer range caps at eslint ^9.7 -> react/display-name crash at load.
+      - dependency-name: "eslint"
+        update-types: ["version-update:semver-major"]
+      # typescript-eslint 8.x peer range is ">=4.8.4 <6.1.0" -> TS 7 hard-refuses.
+      - dependency-name: "typescript"
+        update-types: ["version-update:semver-major"]
+      # @tsparticles v4 changed its exported API; the vendored SparklesCore from the
+      # Aceternity registry targets the v3 API (initParticlesEngine, IEffect.fill...).
+      # NOTE: dependabot `ignore` does NOT support wildcards (only `groups` does) —
+      # list each exact scoped package.
+      - dependency-name: "@tsparticles/react"
+        update-types: ["version-update:semver-major"]
+      - dependency-name: "@tsparticles/engine"
+        update-types: ["version-update:semver-major"]
+      - dependency-name: "@tsparticles/slim"
+        update-types: ["version-update:semver-major"]
+      # eslint-config-next majors follow Next.js majors and can pull incompatible
+      # plugin versions; framework majors are deliberate, not auto-bumps.
+      - dependency-name: "eslint-config-next"
+        update-types: ["version-update:semver-major"]
+      # eslint-plugin-react 8.x targets ESLint 10, which conflicts with the
+      # pinned eslint 9 (and the vendored components' validated toolchain).
+      - dependency-name: "eslint-plugin-react"
+        update-types: ["version-update:semver-major"]
+  - package-ecosystem: "github-actions"
+    directory: "/"
+    schedule:
+      interval: "weekly"
+    groups:
+      actions:
+        patterns: ["*"]
+        update-types:
+          - "minor"
+          - "patch"

package.json

@@ -34,9 +34,9 @@
     "@tabler/icons-react": "^3.47.0",
     "@tanstack/react-query": "^5.103.1",
     "@tanstack/react-table": "^9.2.4",
-    "@tsparticles/engine": "~3.9.0",
-    "@tsparticles/react": "~3.0.0",
-    "@tsparticles/slim": "~4.4.0",
+    "@tsparticles/engine": "3.9.1",
+    "@tsparticles/react": "3.0.0",
+    "@tsparticles/slim": "3.9.1",
     "better-auth": "^1.7.5",
     "class-variance-authority": "^0.7.1",
     "clsx": "^2.1.1",
@@ -81,7 +81,7 @@
     "@types/react": "^19",
     "@types/react-dom": "^19",
     "@vitest/coverage-v8": "^5.0.1",
-    "eslint": ">=9.24.0 <11",
+    "eslint": "9.39.5",
     "eslint-config-next": "16.3.5",
     "eslint-plugin-react": "^7.37.5",
     "husky": "^9.1.7",
@@ -91,7 +91,7 @@
     "prettier": "^3.9.8",
     "prettier-plugin-tailwindcss": "^0.8.1",
     "tailwindcss": "^4",
-    "typescript": "^7.0.2",
+    "typescript": "6.0.3",
     "typescript-eslint": "^8.70.0",
     "vitest": "^5.0.1"
   },