feat: initial OmniRoute release (rebranded from 9router)

This project is inspired by and originally forked from 9router by decolua
(https://github.com/decolua/9router).

Full rebrand: 9router → OmniRoute across all source code, configuration,
Docker, documentation, and assets.

.github/dependabot.yml

@@ -0,0 +1,27 @@
+version: 2
+updates:
+  - package-ecosystem: "npm"
+    directory: "/"
+    schedule:
+      interval: "weekly"
+      day: "monday"
+    commit-message:
+      prefix: "deps"
+    open-pull-requests-limit: 10
+    groups:
+      production:
+        dependency-type: "production"
+      development:
+        dependency-type: "development"
+    ignore:
+      - dependency-name: "react"
+        update-types: ["version-update:semver-major"]
+      - dependency-name: "react-dom"
+        update-types: ["version-update:semver-major"]
+      - dependency-name: "next"
+        update-types: ["version-update:semver-major"]
+
+  - package-ecosystem: "github-actions"
+    directory: "/"
+    schedule:
+      interval: "weekly"

.github/workflows/codex-review.yml

@@ -0,0 +1,22 @@
+name: Codex PR Review
+
+on:
+  pull_request:
+    types: [opened, synchronize]
+
+jobs:
+  request-codex-review:
+    runs-on: ubuntu-latest
+    permissions:
+      pull-requests: write
+    steps:
+      - name: Request Codex Review
+        uses: actions/github-script@v7
+        with:
+          script: |
+            await github.rest.issues.createComment({
+              owner: context.repo.owner,
+              repo: context.repo.repo,
+              issue_number: context.payload.pull_request.number,
+              body: '@codex review'
+            });