test: switch to Deno native testing framework

- Remove tapbundle and @git.zone/tstest dependency
- Use Deno.test() and @std/assert for all tests
- Update test imports to use jsr:@std/assert
- All 10 logger tests passing with native Deno test runner
- Simplified test configuration in deno.json
- Tests are now completely dependency-free (only standard library)

deno.json

@@ -6,7 +6,7 @@
     "dev": "deno run --allow-all mod.ts",
     "compile": "deno task compile:all",
     "compile:all": "bash scripts/compile-all.sh",
-    "test": "deno run --allow-all test/test.ts && deno run --allow-all test/test.logger.ts",
+    "test": "deno test --allow-all test/",
     "test:watch": "deno test --allow-all --watch test/",
     "check": "deno check mod.ts",
     "fmt": "deno fmt",