refactor: remove i18n dependency and related code

- Removed the i18n module and its related functions from the project.
- Eliminated the usage of getActiveI18n and related locale handling in various components and stores.
- Updated translation handling to use a new instance creation method.
- Cleaned up unused imports and code related to language detection and cookie management.
- Adjusted components to directly utilize the new translation setup.

bun.lock

@@ -5,6 +5,7 @@
     "": {
       "name": "holistream",
       "dependencies": {
+        "@hono/node-server": "^1.19.11",
         "@pinia/colada": "^0.21.7",
         "@unhead/vue": "^2.1.10",
         "@vueuse/core": "^14.2.1",
@@ -169,6 +170,8 @@
 
     "@esbuild/win32-x64": ["@esbuild/win32-x64@0.27.3", "", { "os": "win32", "cpu": "x64" }, "sha512-4uJGhsxuptu3OcpVAzli+/gWusVGwZZHTlS63hh++ehExkVT8SgiEf7/uC/PclrPPkLhZqGgCTjd0VWLo6xMqA=="],
 
+    "@hono/node-server": ["@hono/node-server@1.19.11", "", { "peerDependencies": { "hono": "^4" } }, "sha512-dr8/3zEaB+p0D2n/IUrlPF1HZm586qgJNXK1a9fhg/PzdtkK7Ksd5l312tJX2yBuALqDYBlG20QEbayqPyxn+g=="],
+
     "@iconify/types": ["@iconify/types@2.0.0", "", {}, "sha512-+wluvCrRhXrhyOmRDJ3q8mux9JkKy5SJ/v8ol2tu4FVjyYvtEzkc/3pK15ET6RKg4b4w4BmTk1+gsCUhf21Ykg=="],
 
     "@iconify/utils": ["@iconify/utils@3.1.0", "", { "dependencies": { "@antfu/install-pkg": "^1.1.0", "@iconify/types": "^2.0.0", "mlly": "^1.8.0" } }, "sha512-Zlzem1ZXhI1iHeeERabLNzBHdOa4VhQbqAcOQaMKuTuyZCpwKbC2R4Dd0Zo3g9EAc+Y4fiarO8HIHRAth7+skw=="],