fix: make Context(ctx) panic-free, add MustContext(ctx) for strict fallback (#75);

Author: atlet99

README.md

@@ -74,6 +74,25 @@ logboek.Streams() // logboek.DefaultLogger().Streams()
 ...
 ```
 
+### Using logboek with context.Context
+
+Logboek can propagate a logger through `context.Context`:
+
+```go
+ctx := logboek.NewContext(context.Background(), myLogger)
+
+// Inside a helper function
+logboek.Context(ctx).LogLn("hello from helper")
+```
+
+`logboek.Context(ctx)` is **safe**: if the provided context does not hold a logger (or is `nil`/`context.Background()`), it automatically falls back to `logboek.DefaultLogger()`.
+
+If you need the original strict behaviour (panic when no logger found), call `logboek.MustContext(ctx)` instead.
+
+```go
+// Will panic if ctx has no logger
+l := logboek.MustContext(ctx)
+```
 <!---
 ## Logging Methods
 

main.go

@@ -166,10 +166,24 @@ func NewContext(ctx context.Context, logger types.LoggerInterface) context.Conte
 }
 
 func Context(ctx context.Context) types.LoggerInterface {
-	if ctx == context.Background() {
+	if ctx == nil || ctx == context.Background() {
 		return DefaultLogger()
 	}
 
+	if ctxValue := ctx.Value(ctxLoggerKey); ctxValue != nil {
+		if lgr, ok := ctxValue.(types.LoggerInterface); ok {
+			return lgr
+		}
+	}
+
+	return DefaultLogger()
+}
+
+func MustContext(ctx context.Context) types.LoggerInterface {
+	if ctx == nil || ctx == context.Background() {
+		panic("context is not bound with logboek logger")
+	}
+
 	ctxValue := ctx.Value(ctxLoggerKey)
 	if ctxValue == nil {
 		panic("context is not bound with logboek logger")