T0.1: Add test scripts and documentation

Add scripts/test.sh and scripts/test.bat to run go vet and go test -race.
Update docs/TESTS.md with test script usage and reorganized manual test commands.

Co-Authored-By: Claude Haiku 4.5 <noreply@anthropic.com>

docs/TESTS.md

@@ -2,6 +2,57 @@
 
 All tests are located alongside source code in the `src/core/` package. Tests follow Go conventions with `*_test.go` filename patterns.
 
+## Running Tests
+
+### Using the test scripts
+
+The repository provides convenience scripts to run all tests with static analysis:
+
+**Unix/Linux/macOS:**
+```bash
+./scripts/test.sh
+```
+
+**Windows:**
+```bash
+scripts\test.bat
+```
+
+Both scripts run:
+1. `go vet ./...` — static analysis for common errors and suspicious code patterns
+2. `go test -race ./...` — tests with race condition detection enabled
+
+### Manual test commands
+
+Run all tests:
+```bash
+go test ./...
+```
+
+Run all tests with race detection:
+```bash
+go test -race ./...
+```
+
+Run tests with verbose output:
+```bash
+go test -v ./...
+```
+
+Run a specific test by name:
+```bash
+go test -run TestRunJobWritesLogFile ./src/core
+```
+
+Run tests with code coverage:
+```bash
+go test -cover ./src/core
+go test -coverprofile=coverage.out ./src/core
+go tool cover -html=coverage.out
+```
+
+---
+
 ## Test Files Overview
 
 ### store_test.go
@@ -107,43 +158,6 @@ Tests Linux autostart entry creation via XDG Desktop Entry files.
 
 ---
 
-## Running Tests
-
-### Run all tests in the package
-```bash
-cd D:\Local\Git\gosentry
-go test ./src/core
-```
-
-### Run tests with verbose output
-```bash
-go test -v ./src/core
-```
-
-### Run specific test by name
-```bash
-go test -run TestRunJobWritesLogFile ./src/core
-```
-
-### Run Windows-only tests (on Windows)
-```bash
-go test -v ./src/core  # Windows build tags are active
-```
-
-### Run Linux-only tests (on Linux)
-```bash
-go test -v ./src/core  # Linux build tags are active
-```
-
-### Run with code coverage
-```bash
-go test -cover ./src/core
-go test -coverprofile=coverage.out ./src/core
-go tool cover -html=coverage.out
-```
-
----
-
 ## Test Design Principles
 
 1. **Isolation** — Tests use `t.TempDir()` for file operations and `t.Setenv()` for environment variables to avoid affecting system state.