diff --git a/.gitignore b/.gitignore
index 60e10f5..dd456b9 100644
--- a/.gitignore
+++ b/.gitignore
@@ -37,18 +37,9 @@ go.work.sum
 # Air artifacts
 *tmp/
 
-# binaries
-internal/examples/chatroom/chatroom
-internal/examples/counter/counter
-internal/examples/countercomp/countercomp
-internal/examples/greeter/greeter
-internal/examples/livereload/livereload
-internal/examples/picocss/picocss
-internal/examples/plugins/plugins
-internal/examples/realtimechart/realtimechart
-internal/examples/shakespeare/shakespeare
-internal/examples/nats-chatroom/nats-chatroom
-/nats-chatroom
+# Example binaries and data files
+internal/examples/*/[a-z]*[!.go]
+internal/examples/shakespeare/shake.db
 
 # NATS data directory
 data/
diff --git a/README.md b/README.md
index 51b2e58..d3b9be6 100644
--- a/README.md
+++ b/README.md
@@ -74,14 +74,13 @@ func main() {
 - **Plugin system** — `func(v *V)` hooks for integrating CSS/JS libraries
 - **Structured logging** — zerolog with configurable levels; console output in dev, JSON in production
 - **Graceful shutdown** — listens for SIGINT/SIGTERM, drains contexts, closes pub/sub
-- **Context lifecycle** — background reaper cleans up disconnected contexts; configurable TTL
 - **HTML DSL** — the `h` package provides type-safe Go-native HTML composition
 
 ## Examples
 
-The `internal/examples/` directory contains 14 runnable examples:
+The `internal/examples/` directory contains 19 runnable examples:
 
-`chatroom` · `counter` · `countercomp` · `greeter` · `keyboard` · `livereload` · `nats-chatroom` · `pathparams` · `picocss` · `plugins` · `pubsub-crud` · `realtimechart` · `session` · `shakespeare`
+`chatroom` · `counter` · `countercomp` · `effectspike` · `greeter` · `keyboard` · `livereload` · `maplibre` · `middleware` · `nats-chatroom` · `pathparams` · `picocss` · `plugins` · `pubsub-crud` · `realtimechart` · `session` · `shakespeare` · `signup` · `spa`
 
 ## Experimental
 
diff --git a/ci-check.sh b/ci-check.sh
index 74c481b..0d4d1f4 100755
--- a/ci-check.sh
+++ b/ci-check.sh
@@ -6,9 +6,13 @@ set -o pipefail
 ROOT="$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)"
 cd "$ROOT"
 
-echo "== CI: Format code =="
-go fmt ./...
-echo "OK: formatting complete"
+echo "== CI: Check formatting =="
+if [ -n "$(gofmt -l .)" ]; then
+  echo "ERROR: files not formatted:"
+  gofmt -l .
+  exit 1
+fi
+echo "OK: all files formatted"
 
 echo "== CI: Run go vet =="
 if ! go vet ./...; then
diff --git a/computed.go b/computed.go
index 23ccb25..ad51d44 100644
--- a/computed.go
+++ b/computed.go
@@ -1,7 +1,6 @@
 package via
 
 import (
-	"fmt"
 	"strconv"
 	"strings"
 
@@ -51,5 +50,5 @@ func (s *computedSignal) recompute() {
 }
 
 func (s *computedSignal) patchValue() string {
-	return fmt.Sprintf("%v", s.lastVal)
+	return s.lastVal
 }
diff --git a/docs/state-and-interactivity.md b/docs/state-and-interactivity.md
index d743bb7..d4e6578 100644
--- a/docs/state-and-interactivity.md
+++ b/docs/state-and-interactivity.md
@@ -94,7 +94,7 @@ Available triggers:
 |--------|-------|-------|
 | `OnClick()` | `click` | |
 | `OnDblClick()` | `dblclick` | |
-| `OnChange()` | `change` | 200ms debounce |
+| `OnChange()` | `change` | |
 | `OnInput()` | `input` | No debounce |
 | `OnSubmit()` | `submit` | |
 | `OnKeyDown(key)` | `keydown` | Filtered by key name (e.g. `"Enter"`, `"Escape"`) |
diff --git a/h/h.go b/h/h.go
index 5aa2d9d..a5b0d83 100644
--- a/h/h.go
+++ b/h/h.go
@@ -5,7 +5,7 @@
 //
 //	h.Div(
 //		h.H1(h.Text("Hello, Via")),
-//		h.P(h.Text("Pure Go. No tmplates.")),
+//		h.P(h.Text("Pure Go. No templates.")),
 //	)
 package h
 
diff --git a/internal/examples/livereload/main.go b/internal/examples/livereload/main.go
index f1536df..0d26788 100644
--- a/internal/examples/livereload/main.go
+++ b/internal/examples/livereload/main.go
@@ -2,7 +2,6 @@ package main
 
 import (
 	"github.com/ryanhamamura/via"
-	// "github.com/go-via/via-plugin-picocss/picocss"
 	"github.com/ryanhamamura/via/h"
 )
 
@@ -15,9 +14,6 @@ func main() {
 		DocumentTitle: "Live Reload Demo",
 		DevMode:       true,
 		LogLevel:      via.LogLevelDebug,
-		Plugins:       []via.Plugin{
-			// picocss.Default
-		},
 	})
 
 	v.Page("/", func(c *via.Context) {
diff --git a/internal/examples/pathparams/main.go b/internal/examples/pathparams/main.go
index 0088d3b..cc2c823 100644
--- a/internal/examples/pathparams/main.go
+++ b/internal/examples/pathparams/main.go
@@ -4,17 +4,12 @@ import (
 	"strconv"
 
 	"github.com/ryanhamamura/via"
-	// "github.com/go-via/via-plugin-picocss/picocss"
 	. "github.com/ryanhamamura/via/h"
 )
 
 func main() {
 	v := via.New()
 
-	v.Config(via.Options{
-		// Plugins: []via.Plugin{picocss.Default},
-	})
-
 	v.Page("/counters/{counter_id}/{start_at_step}", func(c *via.Context) {
 
 		counterID := c.GetPathParam("counter_id")
diff --git a/internal/examples/pathparams/pathparams b/internal/examples/pathparams/pathparams
deleted file mode 100755
index 4bc69f2..0000000
Binary files a/internal/examples/pathparams/pathparams and /dev/null differ
diff --git a/internal/examples/picocss/main.go b/internal/examples/picocss/main.go
index 33b8a14..77f54b1 100644
--- a/internal/examples/picocss/main.go
+++ b/internal/examples/picocss/main.go
@@ -2,7 +2,6 @@ package main
 
 import (
 	"github.com/ryanhamamura/via"
-	// "github.com/go-via/via-plugin-picocss/picocss"
 	"github.com/ryanhamamura/via/h"
 )
 
@@ -13,11 +12,6 @@ func main() {
 
 	v.Config(via.Options{
 		DocumentTitle: "Via Counter",
-		// Plugin is placed here. Use picocss.WithOptions(pococss.Options) to add the plugin
-		// with a different color theme or to enable a classes for a wide range of colors.
-		// Plugins: []via.Plugin{
-		// 	picocss.Default,
-		// },
 	})
 
 	v.Page("/", func(c *via.Context) {
diff --git a/internal/examples/realtimechart/main.go b/internal/examples/realtimechart/main.go
index f89bffb..19ced76 100644
--- a/internal/examples/realtimechart/main.go
+++ b/internal/examples/realtimechart/main.go
@@ -6,7 +6,6 @@ import (
 	"time"
 
 	"github.com/ryanhamamura/via"
-	// "github.com/go-via/via-plugin-picocss/picocss"
 	"github.com/ryanhamamura/via/h"
 )
 
@@ -16,9 +15,6 @@ func main() {
 	v.Config(via.Options{
 		LogLevel: via.LogLevelDebug,
 		DevMode:  true,
-		Plugins:  []via.Plugin{
-			// picocss.Default,
-		},
 	})
 
 	v.AppendToHead(
diff --git a/internal/examples/shakespeare/main.go b/internal/examples/shakespeare/main.go
index 164d603..102d06c 100644
--- a/internal/examples/shakespeare/main.go
+++ b/internal/examples/shakespeare/main.go
@@ -22,6 +22,9 @@ type ShakeDB struct {
 	findByTextStmt *sql.Stmt
 }
 
+// Prepare opens shake.db, a ~22 MB SQLite database of Shakespeare's works.
+// Download from https://github.com/nicholasgasior/gopher-fizzbuzz/raw/master/shake.db
+// and place it in this directory before running.
 func (shakeDB *ShakeDB) Prepare() {
 	db, err := sql.Open("sqlite3", "shake.db")
 	if err != nil {
diff --git a/internal/examples/shakespeare/shake.db b/internal/examples/shakespeare/shake.db
deleted file mode 100644
index 8abddfc..0000000
Binary files a/internal/examples/shakespeare/shake.db and /dev/null differ
diff --git a/signal_test.go b/signal_test.go
index b7ccb14..4087a53 100644
--- a/signal_test.go
+++ b/signal_test.go
@@ -1,7 +1,6 @@
 package via
 
 import (
-	//	"net/http/httptest"
 	"testing"
 
 	"github.com/ryanhamamura/via/h"
diff --git a/via.go b/via.go
index 4ad1cdf..d044aa3 100644
--- a/via.go
+++ b/via.go
@@ -439,36 +439,39 @@ func (v *V) ensureDatastarHandler() {
 	})
 }
 
+func loadDevModeMap(path string) map[string]string {
+	m := make(map[string]string)
+	file, err := os.Open(path)
+	if err != nil {
+		return m
+	}
+	defer file.Close()
+	json.NewDecoder(file).Decode(&m)
+	return m
+}
+
+func saveDevModeMap(path string, m map[string]string) error {
+	file, err := os.Create(path)
+	if err != nil {
+		return err
+	}
+	defer file.Close()
+	return json.NewEncoder(file).Encode(m)
+}
+
 func (v *V) devModePersist(c *Context) {
 	p := filepath.Join(".via", "devmode", "ctx.json")
 	if err := os.MkdirAll(filepath.Dir(p), 0755); err != nil {
 		v.logFatal("failed to create directory for devmode files: %v", err)
 	}
 
-	// load persisted list from file, or empty list if file not found
-	file, err := os.Open(p)
-	ctxRegMap := make(map[string]string)
-	if err == nil {
-		json.NewDecoder(file).Decode(&ctxRegMap)
-	}
-	file.Close()
-
-	// add ctx to persisted list
+	ctxRegMap := loadDevModeMap(p)
 	if _, ok := ctxRegMap[c.id]; !ok {
 		ctxRegMap[c.id] = c.route
 	}
 
-	// write persisted list to file
-	file, err = os.Create(p)
-	if err != nil {
-		v.logErr(c, "devmode failed to percist ctx: %v", err)
-
-	}
-	defer file.Close()
-
-	encoder := json.NewEncoder(file)
-	if err := encoder.Encode(ctxRegMap); err != nil {
-		v.logErr(c, "devmode failed to persist ctx")
+	if err := saveDevModeMap(p, ctxRegMap); err != nil {
+		v.logErr(c, "devmode failed to persist ctx: %v", err)
 	}
 	v.logDebug(c, "devmode persisted ctx to file")
 }
@@ -476,27 +479,11 @@ func (v *V) devModePersist(c *Context) {
 func (v *V) devModeRemovePersisted(c *Context) {
 	p := filepath.Join(".via", "devmode", "ctx.json")
 
-	// load persisted list from file, or empty list if file not found
-	file, err := os.Open(p)
-	ctxRegMap := make(map[string]string)
-	if err == nil {
-		json.NewDecoder(file).Decode(&ctxRegMap)
-	}
-	file.Close()
-
+	ctxRegMap := loadDevModeMap(p)
 	delete(ctxRegMap, c.id)
 
-	// write persisted list to file
-	file, err = os.Create(p)
-	if err != nil {
-		v.logErr(c, "devmode failed to remove percisted ctx: %v", err)
-
-	}
-	defer file.Close()
-
-	encoder := json.NewEncoder(file)
-	if err := encoder.Encode(ctxRegMap); err != nil {
-		v.logErr(c, "devmode failed to remove persisted ctx")
+	if err := saveDevModeMap(p, ctxRegMap); err != nil {
+		v.logErr(c, "devmode failed to remove persisted ctx: %v", err)
 	}
 	v.logDebug(c, "devmode removed persisted ctx from file")
 }