Merge pull request '[agent/codex:gpt-5.3-codex-spark] Read ~/spec/code/core/go/webview/RFC.md fully. Find features...' (#14) from agent/read---spec-code-core-go-webview-rfc-md into dev

Co-Authored-By: Virgil <virgil@lethean.io>

actions.go

@@ -3,9 +3,9 @@ package webview
 
 import (
 	"context"
-	"fmt"
 	"time"
 
+	core "dappco.re/go/core"
 	coreerr "dappco.re/go/core/log"
 )
 
@@ -84,7 +84,7 @@ type ScrollAction struct {
 
 // Execute performs the scroll action.
 func (a ScrollAction) Execute(ctx context.Context, wv *Webview) error {
-	script := fmt.Sprintf("window.scrollTo(%d, %d)", a.X, a.Y)
+	script := core.Sprintf("window.scrollTo(%d, %d)", a.X, a.Y)
 	_, err := wv.evaluate(ctx, script)
 	return err
 }
@@ -96,7 +96,7 @@ type ScrollIntoViewAction struct {
 
 // Execute scrolls the element into view.
 func (a ScrollIntoViewAction) Execute(ctx context.Context, wv *Webview) error {
-	script := fmt.Sprintf("document.querySelector(%q)?.scrollIntoView({behavior: 'smooth', block: 'center'})", a.Selector)
+	script := core.Sprintf("document.querySelector(%q)?.scrollIntoView({behavior: 'smooth', block: 'center'})", a.Selector)
 	_, err := wv.evaluate(ctx, script)
 	return err
 }
@@ -108,7 +108,7 @@ type FocusAction struct {
 
 // Execute focuses the element.
 func (a FocusAction) Execute(ctx context.Context, wv *Webview) error {
-	script := fmt.Sprintf("document.querySelector(%q)?.focus()", a.Selector)
+	script := core.Sprintf("document.querySelector(%q)?.focus()", a.Selector)
 	_, err := wv.evaluate(ctx, script)
 	return err
 }
@@ -120,7 +120,7 @@ type BlurAction struct {
 
 // Execute removes focus from the element.
 func (a BlurAction) Execute(ctx context.Context, wv *Webview) error {
-	script := fmt.Sprintf("document.querySelector(%q)?.blur()", a.Selector)
+	script := core.Sprintf("document.querySelector(%q)?.blur()", a.Selector)
 	_, err := wv.evaluate(ctx, script)
 	return err
 }
@@ -132,7 +132,7 @@ type ClearAction struct {
 
 // Execute clears the input value.
 func (a ClearAction) Execute(ctx context.Context, wv *Webview) error {
-	script := fmt.Sprintf(`
+	script := core.Sprintf(`
 		const el = document.querySelector(%q);
 		if (el) {
 			el.value = '';
@@ -152,7 +152,7 @@ type SelectAction struct {
 
 // Execute selects the option.
 func (a SelectAction) Execute(ctx context.Context, wv *Webview) error {
-	script := fmt.Sprintf(`
+	script := core.Sprintf(`
 		const el = document.querySelector(%q);
 		if (el) {
 			el.value = %q;
@@ -171,7 +171,7 @@ type CheckAction struct {
 
 // Execute checks/unchecks the checkbox.
 func (a CheckAction) Execute(ctx context.Context, wv *Webview) error {
-	script := fmt.Sprintf(`
+	script := core.Sprintf(`
 		const el = document.querySelector(%q);
 		if (el && el.checked !== %t) {
 			el.click();
@@ -222,7 +222,7 @@ func (a DoubleClickAction) Execute(ctx context.Context, wv *Webview) error {
 
 	if elem.BoundingBox == nil {
 		// Fallback to JavaScript
-		script := fmt.Sprintf(`
+		script := core.Sprintf(`
 			const el = document.querySelector(%q);
 			if (el) {
 				const event = new MouseEvent('dblclick', {bubbles: true, cancelable: true, view: window});
@@ -269,7 +269,7 @@ func (a RightClickAction) Execute(ctx context.Context, wv *Webview) error {
 
 	if elem.BoundingBox == nil {
 		// Fallback to JavaScript
-		script := fmt.Sprintf(`
+		script := core.Sprintf(`
 			const el = document.querySelector(%q);
 			if (el) {
 				const event = new MouseEvent('contextmenu', {bubbles: true, cancelable: true, view: window});
@@ -377,7 +377,7 @@ type SetAttributeAction struct {
 
 // Execute sets the attribute.
 func (a SetAttributeAction) Execute(ctx context.Context, wv *Webview) error {
-	script := fmt.Sprintf("document.querySelector(%q)?.setAttribute(%q, %q)", a.Selector, a.Attribute, a.Value)
+	script := core.Sprintf("document.querySelector(%q)?.setAttribute(%q, %q)", a.Selector, a.Attribute, a.Value)
 	_, err := wv.evaluate(ctx, script)
 	return err
 }
@@ -390,7 +390,7 @@ type RemoveAttributeAction struct {
 
 // Execute removes the attribute.
 func (a RemoveAttributeAction) Execute(ctx context.Context, wv *Webview) error {
-	script := fmt.Sprintf("document.querySelector(%q)?.removeAttribute(%q)", a.Selector, a.Attribute)
+	script := core.Sprintf("document.querySelector(%q)?.removeAttribute(%q)", a.Selector, a.Attribute)
 	_, err := wv.evaluate(ctx, script)
 	return err
 }
@@ -403,7 +403,7 @@ type SetValueAction struct {
 
 // Execute sets the value.
 func (a SetValueAction) Execute(ctx context.Context, wv *Webview) error {
-	script := fmt.Sprintf(`
+	script := core.Sprintf(`
 		const el = document.querySelector(%q);
 		if (el) {
 			el.value = %q;
@@ -462,7 +462,7 @@ func (s *ActionSequence) WaitForSelector(selector string) *ActionSequence {
 func (s *ActionSequence) Execute(ctx context.Context, wv *Webview) error {
 	for i, action := range s.actions {
 		if err := action.Execute(ctx, wv); err != nil {
-			return coreerr.E("ActionSequence.Execute", fmt.Sprintf("action %d failed", i), err)
+			return coreerr.E("ActionSequence.Execute", core.Sprintf("action %d failed", i), err)
 		}
 	}
 	return nil

angular.go

@@ -3,11 +3,9 @@ package webview
 
 import (
 	"context"
-	"encoding/json"
-	"fmt"
-	"strings"
 	"time"
 
+	core "dappco.re/go/core"
 	coreerr "dappco.re/go/core/log"
 )
 
@@ -209,7 +207,7 @@ func (ah *AngularHelper) NavigateByRouter(path string) error {
 	ctx, cancel := context.WithTimeout(ah.wv.ctx, ah.timeout)
 	defer cancel()
 
-	script := fmt.Sprintf(`
+	script := core.Sprintf(`
 		(function() {
 			const roots = window.getAllAngularRootElements ? window.getAllAngularRootElements() : [];
 			if (roots.length === 0) {
@@ -326,7 +324,7 @@ func (ah *AngularHelper) GetComponentProperty(selector, propertyName string) (an
 	ctx, cancel := context.WithTimeout(ah.wv.ctx, ah.timeout)
 	defer cancel()
 
-	script := fmt.Sprintf(`
+	script := core.Sprintf(`
 			(function() {
 				const selector = %s;
 				const propertyName = %s;
@@ -350,7 +348,7 @@ func (ah *AngularHelper) SetComponentProperty(selector, propertyName string, val
 	ctx, cancel := context.WithTimeout(ah.wv.ctx, ah.timeout)
 	defer cancel()
 
-	script := fmt.Sprintf(`
+	script := core.Sprintf(`
 			(function() {
 				const selector = %s;
 				const propertyName = %s;
@@ -383,7 +381,7 @@ func (ah *AngularHelper) CallComponentMethod(selector, methodName string, args .
 	ctx, cancel := context.WithTimeout(ah.wv.ctx, ah.timeout)
 	defer cancel()
 
-	var argsStr strings.Builder
+	argsStr := core.NewBuilder()
 	for i, arg := range args {
 		if i > 0 {
 			argsStr.WriteString(", ")
@@ -391,7 +389,7 @@ func (ah *AngularHelper) CallComponentMethod(selector, methodName string, args .
 		argsStr.WriteString(formatJSValue(arg))
 	}
 
-	script := fmt.Sprintf(`
+	script := core.Sprintf(`
 			(function() {
 				const selector = %s;
 				const methodName = %s;
@@ -454,7 +452,7 @@ func (ah *AngularHelper) GetService(serviceName string) (any, error) {
 	ctx, cancel := context.WithTimeout(ah.wv.ctx, ah.timeout)
 	defer cancel()
 
-	script := fmt.Sprintf(`
+	script := core.Sprintf(`
 		(function() {
 			const roots = window.getAllAngularRootElements ? window.getAllAngularRootElements() : [];
 			for (const root of roots) {
@@ -481,7 +479,7 @@ func (ah *AngularHelper) WaitForComponent(selector string) error {
 	ctx, cancel := context.WithTimeout(ah.wv.ctx, ah.timeout)
 	defer cancel()
 
-	script := fmt.Sprintf(`
+	script := core.Sprintf(`
 		(function() {
 			const element = document.querySelector(%q);
 			if (!element) return false;
@@ -523,7 +521,7 @@ func (ah *AngularHelper) DispatchEvent(selector, eventName string, detail any) e
 		detailStr = formatJSValue(detail)
 	}
 
-	script := fmt.Sprintf(`
+	script := core.Sprintf(`
 			(function() {
 				const selector = %s;
 				const eventName = %s;
@@ -546,7 +544,7 @@ func (ah *AngularHelper) GetNgModel(selector string) (any, error) {
 	ctx, cancel := context.WithTimeout(ah.wv.ctx, ah.timeout)
 	defer cancel()
 
-	script := fmt.Sprintf(`
+	script := core.Sprintf(`
 		(function() {
 			const element = document.querySelector(%q);
 			if (!element) return null;
@@ -573,7 +571,7 @@ func (ah *AngularHelper) SetNgModel(selector string, value any) error {
 	ctx, cancel := context.WithTimeout(ah.wv.ctx, ah.timeout)
 	defer cancel()
 
-	script := fmt.Sprintf(`
+	script := core.Sprintf(`
 			(function() {
 				const selector = %s;
 				const element = document.querySelector(selector);
@@ -616,14 +614,14 @@ func getString(m map[string]any, key string) string {
 }
 
 func formatJSValue(v any) string {
-	data, err := json.Marshal(v)
-	if err == nil {
-		return string(data)
+	r := core.JSONMarshal(v)
+	if r.OK {
+		return string(r.Value.([]byte))
 	}
 
-	fallback, fallbackErr := json.Marshal(fmt.Sprint(v))
-	if fallbackErr == nil {
-		return string(fallback)
+	r = core.JSONMarshal(core.Sprint(v))
+	if r.OK {
+		return string(r.Value.([]byte))
 	}
 
 	return "null"

audit_issue2_test.go

@@ -4,15 +4,15 @@ package webview
 import (
 	"context"
 	"encoding/json"
-	"fmt"
 	"net/http"
 	"net/http/httptest"
 	"net/url"
-	"strings"
 	"sync"
 	"testing"
 	"time"
 
+	core "dappco.re/go/core"
+
 	"github.com/gorilla/websocket"
 )
 
@@ -78,7 +78,7 @@ func (s *fakeCDPServer) addTarget(id string) *fakeCDPTarget {
 func (s *fakeCDPServer) newTarget() *fakeCDPTarget {
 	s.mu.Lock()
 	s.nextTarget++
-	id := fmt.Sprintf("target-%d", s.nextTarget+1)
+	id := core.Sprintf("target-%d", s.nextTarget+1)
 	s.mu.Unlock()
 
 	return s.addTarget(id)
@@ -100,8 +100,8 @@ func (s *fakeCDPServer) handle(w http.ResponseWriter, r *http.Request) {
 		s.writeJSON(w, map[string]string{
 			"Browser": "Chrome/123.0",
 		})
-	case strings.HasPrefix(r.URL.Path, "/devtools/page/"):
-		s.handleWebSocket(w, r, strings.TrimPrefix(r.URL.Path, "/devtools/page/"))
+	case core.HasPrefix(r.URL.Path, "/devtools/page/"):
+		s.handleWebSocket(w, r, core.TrimPrefix(r.URL.Path, "/devtools/page/"))
 	default:
 		http.NotFound(w, r)
 	}
@@ -209,7 +209,7 @@ func (tgt *fakeCDPTarget) readLoop() {
 		}
 
 		var msg cdpMessage
-		if err := json.Unmarshal(data, &msg); err != nil {
+		if r := core.JSONUnmarshal(data, &msg); !r.OK {
 			continue
 		}
 
@@ -451,7 +451,7 @@ func TestNewCDPClient_Bad_RejectsCrossHostWebSocket(t *testing.T) {
 	if err == nil {
 		t.Fatal("NewCDPClient succeeded with a cross-host WebSocket URL")
 	}
-	if !strings.Contains(err.Error(), "invalid target WebSocket URL") {
+	if !core.Contains(err.Error(), "invalid target WebSocket URL") {
 		t.Fatalf("NewCDPClient error = %v, want cross-host WebSocket validation failure", err)
 	}
 }
@@ -543,13 +543,13 @@ func TestAngularHelperSetNgModel_Good_EscapesSelectorAndValue(t *testing.T) {
 	}
 
 	expression, _ := target.waitForMessage(t).Params["expression"].(string)
-	if !strings.Contains(expression, "const selector = "+formatJSValue(selector)+";") {
+	if !core.Contains(expression, "const selector = "+formatJSValue(selector)+";") {
 		t.Fatalf("expression did not contain safely quoted selector: %s", expression)
 	}
-	if !strings.Contains(expression, "element.value = "+formatJSValue(value)+";") {
+	if !core.Contains(expression, "element.value = "+formatJSValue(value)+";") {
 		t.Fatalf("expression did not contain safely quoted value: %s", expression)
 	}
-	if strings.Contains(expression, "throw new Error('Element not found: "+selector+"')") {
+	if core.Contains(expression, "throw new Error('Element not found: "+selector+"')") {
 		t.Fatalf("expression still embedded selector directly in error text: %s", expression)
 	}
 }

cdp.go

@@ -3,8 +3,6 @@ package webview
 
 import (
 	"context"
-	"encoding/json"
-	"errors"
 	"io"
 	"iter"
 	"net"
@@ -17,9 +15,10 @@ import (
 	"sync/atomic"
 	"time"
 
-	"github.com/gorilla/websocket"
-
+	core "dappco.re/go/core"
 	coreerr "dappco.re/go/core/log"
+
+	"github.com/gorilla/websocket"
 )
 
 const debugEndpointTimeout = 10 * time.Second
@@ -31,7 +30,7 @@ var (
 			return http.ErrUseLastResponse
 		},
 	}
-	errCDPClientClosed = errors.New("cdp client closed")
+	errCDPClientClosed = core.NewError("cdp client closed")
 )
 
 // CDPClient handles communication with Chrome DevTools Protocol via WebSocket.
@@ -225,7 +224,7 @@ func (c *CDPClient) readLoop() {
 			}
 
 			var netErr net.Error
-			if errors.As(err, &netErr) && netErr.Timeout() {
+			if core.As(err, &netErr) && netErr.Timeout() {
 				continue
 			}
 
@@ -235,7 +234,7 @@ func (c *CDPClient) readLoop() {
 
 		// Try to parse as response
 		var resp cdpResponse
-		if err := json.Unmarshal(data, &resp); err == nil && resp.ID > 0 {
+		if r := core.JSONUnmarshal(data, &resp); r.OK && resp.ID > 0 {
 			c.pendMu.Lock()
 			if ch, ok := c.pending[resp.ID]; ok {
 				respCopy := resp
@@ -250,7 +249,7 @@ func (c *CDPClient) readLoop() {
 
 		// Try to parse as event
 		var event cdpEvent
-		if err := json.Unmarshal(data, &event); err == nil && event.Method != "" {
+		if r := core.JSONUnmarshal(data, &event); r.OK && event.Method != "" {
 			c.dispatchEvent(event.Method, event.Params)
 		}
 	}
@@ -392,8 +391,8 @@ func GetVersion(debugURL string) (map[string]string, error) {
 	}
 
 	var version map[string]string
-	if err := json.Unmarshal(body, &version); err != nil {
-		return nil, coreerr.E("GetVersion", "failed to parse version", err)
+	if r := core.JSONUnmarshal(body, &version); !r.OK {
+		return nil, coreerr.E("GetVersion", "failed to parse version", nil)
 	}
 
 	return version, nil
@@ -447,7 +446,7 @@ func parseDebugURL(raw string) (*url.URL, error) {
 }
 
 func canonicalDebugURL(debugURL *url.URL) string {
-	return strings.TrimSuffix(debugURL.String(), "/")
+	return core.TrimSuffix(debugURL.String(), "/")
 }
 
 func doDebugRequest(ctx context.Context, debugBase *url.URL, endpoint, rawQuery string) ([]byte, error) {
@@ -486,8 +485,8 @@ func listTargetsAt(ctx context.Context, debugBase *url.URL) ([]TargetInfo, error
 	}
 
 	var targets []TargetInfo
-	if err := json.Unmarshal(body, &targets); err != nil {
-		return nil, err
+	if r := core.JSONUnmarshal(body, &targets); !r.OK {
+		return nil, coreerr.E("CDPClient.listTargetsAt", "failed to parse targets", nil)
 	}
 
 	return targets, nil
@@ -505,8 +504,8 @@ func createTargetAt(ctx context.Context, debugBase *url.URL, pageURL string) (*T
 	}
 
 	var target TargetInfo
-	if err := json.Unmarshal(body, &target); err != nil {
-		return nil, err
+	if r := core.JSONUnmarshal(body, &target); !r.OK {
+		return nil, coreerr.E("CDPClient.createTargetAt", "failed to parse target", nil)
 	}
 
 	return &target, nil
@@ -551,7 +550,7 @@ func targetIDFromWebSocketURL(raw string) (string, error) {
 		return "", err
 	}
 
-	targetID := path.Base(strings.TrimSuffix(wsURL.Path, "/"))
+	targetID := path.Base(core.TrimSuffix(wsURL.Path, "/"))
 	if targetID == "." || targetID == "/" || targetID == "" {
 		return "", coreerr.E("CDPClient.targetIDFromWebSocketURL", "missing target ID in WebSocket URL", nil)
 	}
@@ -595,11 +594,11 @@ func isTerminalReadError(err error) bool {
 	if err == nil {
 		return false
 	}
-	if errors.Is(err, net.ErrClosed) || errors.Is(err, websocket.ErrCloseSent) {
+	if core.Is(err, net.ErrClosed) || core.Is(err, websocket.ErrCloseSent) {
 		return true
 	}
 	var closeErr *websocket.CloseError
-	return errors.As(err, &closeErr)
+	return core.As(err, &closeErr)
 }
 
 func cloneMapAny(src map[string]any) map[string]any {

console.go

@@ -3,13 +3,13 @@ package webview
 
 import (
 	"context"
-	"fmt"
 	"iter"
 	"slices"
-	"strings"
 	"sync"
 	"sync/atomic"
 	"time"
+
+	core "dappco.re/go/core"
 )
 
 // ConsoleWatcher provides advanced console message watching capabilities.
@@ -41,7 +41,7 @@ type consoleHandlerRegistration struct {
 func NewConsoleWatcher(wv *Webview) *ConsoleWatcher {
 	cw := &ConsoleWatcher{
 		wv:       wv,
-		messages: make([]ConsoleMessage, 0, 100),
+		messages: make([]ConsoleMessage, 0, 1000),
 		filters:  make([]ConsoleFilter, 0),
 		limit:    1000,
 		handlers: make([]consoleHandlerRegistration, 0),
@@ -272,14 +272,14 @@ func (cw *ConsoleWatcher) handleConsoleEvent(params map[string]any) {
 
 	// Extract args
 	args, _ := params["args"].([]any)
-	var text strings.Builder
+	text := core.NewBuilder()
 	for i, arg := range args {
 		if argMap, ok := arg.(map[string]any); ok {
 			if val, ok := argMap["value"]; ok {
 				if i > 0 {
 					text.WriteString(" ")
 				}
-				text.WriteString(fmt.Sprint(val))
+				text.WriteString(core.Sprint(val))
 			}
 		}
 	}
@@ -525,7 +525,7 @@ func (ew *ExceptionWatcher) handleException(params map[string]any) {
 	url, _ := exceptionDetails["url"].(string)
 
 	// Extract stack trace
-	var stackTrace strings.Builder
+	stackTrace := core.NewBuilder()
 	if st, ok := exceptionDetails["stackTrace"].(map[string]any); ok {
 		if frames, ok := st["callFrames"].([]any); ok {
 			for _, f := range frames {
@@ -534,7 +534,7 @@ func (ew *ExceptionWatcher) handleException(params map[string]any) {
 					frameURL, _ := frame["url"].(string)
 					frameLine, _ := frame["lineNumber"].(float64)
 					frameCol, _ := frame["columnNumber"].(float64)
-					stackTrace.WriteString(fmt.Sprintf("  at %s (%s:%d:%d)\n", funcName, frameURL, int(frameLine), int(frameCol)))
+					stackTrace.WriteString(core.Sprintf("  at %s (%s:%d:%d)\n", funcName, frameURL, int(frameLine), int(frameCol)))
 				}
 			}
 		}
@@ -569,7 +569,7 @@ func (ew *ExceptionWatcher) handleException(params map[string]any) {
 
 // FormatConsoleOutput formats console messages for display.
 func FormatConsoleOutput(messages []ConsoleMessage) string {
-	var output strings.Builder
+	output := core.NewBuilder()
 	for _, msg := range messages {
 		prefix := ""
 		switch msg.Type {
@@ -585,7 +585,7 @@ func FormatConsoleOutput(messages []ConsoleMessage) string {
 			prefix = "[LOG]"
 		}
 		timestamp := msg.Timestamp.Format("15:04:05.000")
-		output.WriteString(fmt.Sprintf("%s %s %s\n", timestamp, prefix, msg.Text))
+		output.WriteString(core.Sprintf("%s %s %s\n", timestamp, prefix, msg.Text))
 	}
 	return output.String()
 }

go.mod

@@ -5,3 +5,5 @@ go 1.26.0
 require github.com/gorilla/websocket v1.5.3
 
 require dappco.re/go/core/log v0.1.0
+
+require dappco.re/go/core v0.8.0-alpha.1

go.sum

@@ -1,3 +1,5 @@
+dappco.re/go/core v0.8.0-alpha.1 h1:gj7+Scv+L63Z7wMxbJYHhaRFkHJo2u4MMPuUSv/Dhtk=
+dappco.re/go/core v0.8.0-alpha.1/go.mod h1:f2/tBZ3+3IqDrg2F5F598llv0nmb/4gJVCFzM5geE4A=
 dappco.re/go/core/log v0.1.0 h1:pa71Vq2TD2aoEUQWFKwNcaJ3GBY8HbaNGqtE688Unyc=
 dappco.re/go/core/log v0.1.0/go.mod h1:Nkqb8gsXhZAO8VLpx7B8i1iAmohhzqA20b9Zr8VUcJs=
 github.com/davecgh/go-spew v1.1.2-0.20180830191138-d8f796af33cc h1:U9qPSI2PIWSS1VwoXQT9A3Wy9MM3WgvqSxFWenqJduM=

specs/RFC.md

@@ -0,0 +1,505 @@
+# webview, **Import:** `dappco.re/go/core/webview`, **Files:** 5
+
+## Types
+
+### Action
+Declaration: `type Action interface`
+
+Browser action contract used by `ActionSequence`.
+
+Methods:
+- `Execute(ctx context.Context, wv *Webview) error`: Runs the action against the supplied `Webview` and caller-owned context.
+
+### ActionSequence
+Declaration: `type ActionSequence struct`
+
+Represents an ordered list of `Action` values. All fields are unexported.
+
+Methods:
+- `Add(action Action) *ActionSequence`: Appends `action` to the sequence and returns the same sequence for chaining.
+- `Click(selector string) *ActionSequence`: Appends `ClickAction{Selector: selector}`.
+- `Execute(ctx context.Context, wv *Webview) error`: Executes actions in insertion order. The first failing action stops execution and is wrapped as `ActionSequence.Execute` with the zero-based action index.
+- `Navigate(url string) *ActionSequence`: Appends `NavigateAction{URL: url}`.
+- `Type(selector, text string) *ActionSequence`: Appends `TypeAction{Selector: selector, Text: text}`.
+- `Wait(d time.Duration) *ActionSequence`: Appends `WaitAction{Duration: d}`.
+- `WaitForSelector(selector string) *ActionSequence`: Appends `WaitForSelectorAction{Selector: selector}`.
+
+### AngularHelper
+Declaration: `type AngularHelper struct`
+
+Angular-specific helper bound to a `Webview`. All fields are unexported. The helper stores the target `Webview` and a per-operation timeout, which defaults to 30 seconds in `NewAngularHelper`.
+
+Methods:
+- `CallComponentMethod(selector, methodName string, args ...any) (any, error)`: Looks up the Angular component instance for `selector`, verifies that `methodName` is callable, invokes it with JSON-marshalled arguments, ticks `ApplicationRef` when available, and returns the evaluated result.
+- `DispatchEvent(selector, eventName string, detail any) error`: Dispatches a bubbling `CustomEvent` on the matched element. `detail` is marshalled into the page script, or `null` when omitted.
+- `GetComponentProperty(selector, propertyName string) (any, error)`: Returns `componentInstance[propertyName]` for the Angular component attached to the matched element.
+- `GetNgModel(selector string) (any, error)`: Returns `element.value` for `input`, `select`, and `textarea` elements, otherwise `element.value || element.textContent`. Missing elements produce `nil`.
+- `GetRouterState() (*AngularRouterState, error)`: Walks Angular root elements, resolves the first available Router, and returns its URL, fragment, root params, and root query params. Only string values are copied into the returned maps.
+- `GetService(serviceName string) (any, error)`: Resolves a service from the first Angular root injector and returns `JSON.parse(JSON.stringify(service))`, so only JSON-serialisable data survives.
+- `NavigateByRouter(path string) error`: Resolves Angular Router from a root injector, calls `navigateByUrl(path)`, and then waits for Zone.js stability.
+- `SetComponentProperty(selector, propertyName string, value any) error`: Sets `componentInstance[propertyName]` and ticks `ApplicationRef` when available.
+- `SetNgModel(selector string, value any) error`: Assigns `element.value`, dispatches bubbling `input` and `change` events, and then ticks `ApplicationRef` on the first Angular root that exposes it.
+- `SetTimeout(d time.Duration)`: Replaces the helper's default timeout for later Angular operations.
+- `TriggerChangeDetection() error`: Tries to tick `ApplicationRef` on the first Angular root. The method only reports script-evaluation failures; a `false` result from the script is ignored.
+- `WaitForAngular() error`: Verifies that the page looks like an Angular application, then waits for Zone.js stability. It first tries an async Zone-based script and falls back to polling every 50 ms until the helper timeout expires.
+- `WaitForComponent(selector string) error`: Polls every 100 ms until `selector` resolves to an element with an Angular `componentInstance`, or until the helper timeout expires.
+
+### AngularRouterState
+Declaration: `type AngularRouterState struct`
+
+Represents the Angular Router state returned by `AngularHelper.GetRouterState`.
+
+Fields:
+- `URL string`: Current router URL.
+- `Fragment string`: Current URL fragment when Angular reports one.
+- `Params map[string]string`: Root route parameters copied from the router state.
+- `QueryParams map[string]string`: Root query parameters copied from the router state.
+
+### BlurAction
+Declaration: `type BlurAction struct`
+
+Removes focus from an element selected by CSS.
+
+Fields:
+- `Selector string`: CSS selector passed to `document.querySelector`.
+
+Methods:
+- `Execute(ctx context.Context, wv *Webview) error`: Runs `document.querySelector(Selector)?.blur()` through `wv.evaluate`.
+
+### BoundingBox
+Declaration: `type BoundingBox struct`
+
+Represents element coordinates derived from `DOM.getBoxModel`.
+
+Fields:
+- `X float64`: Left edge of the content box.
+- `Y float64`: Top edge of the content box.
+- `Width float64`: Width computed from the first and second X coordinates in the CDP content quad.
+- `Height float64`: Height computed from the first and third Y coordinates in the CDP content quad.
+
+### CDPClient
+Declaration: `type CDPClient struct`
+
+Low-level Chrome DevTools Protocol client backed by a single WebSocket connection. All fields are unexported.
+
+Methods:
+- `Call(ctx context.Context, method string, params map[string]any) (map[string]any, error)`: Clones `params`, assigns a monotonically increasing message ID, writes the request, and waits for the matching CDP response, `ctx.Done()`, or client shutdown.
+- `Close() error`: Cancels the client context, fails pending calls, closes the WebSocket, waits for the read loop to exit, and returns a wrapped close error only when the socket close itself fails with a non-terminal error.
+- `CloseTab() error`: Extracts the current target ID from the WebSocket URL, calls `Target.closeTarget`, checks `success` when the field is present, and then closes the client.
+- `DebugURL() string`: Returns the canonical debug HTTP URL stored on the client.
+- `NewTab(url string) (*CDPClient, error)`: Creates a target via `/json/new`, validates the returned WebSocket debugger URL, dials it, and returns a new `CDPClient`.
+- `OnEvent(method string, handler func(map[string]any))`: Registers a handler for a CDP event method name. Event dispatch clones the handler list and event params and invokes each handler in its own goroutine.
+- `Send(method string, params map[string]any) error`: Clones `params` and writes a fire-and-forget CDP message without waiting for a response.
+- `WebSocketURL() string`: Returns the target WebSocket URL currently in use.
+
+### CheckAction
+Declaration: `type CheckAction struct`
+
+Synchronises a checkbox state by clicking when the current `checked` state differs from the requested value.
+
+Fields:
+- `Selector string`: CSS selector for the checkbox element.
+- `Checked bool`: Desired checked state.
+
+Methods:
+- `Execute(ctx context.Context, wv *Webview) error`: Evaluates a script that clicks the element only when `el.checked != Checked`.
+
+### ClearAction
+Declaration: `type ClearAction struct`
+
+Clears the value of an input-like element.
+
+Fields:
+- `Selector string`: CSS selector for the target element.
+
+Methods:
+- `Execute(ctx context.Context, wv *Webview) error`: Sets `el.value = ""` and dispatches bubbling `input` and `change` events when the element exists.
+
+### ClickAction
+Declaration: `type ClickAction struct`
+
+Action wrapper for the `Webview` click implementation.
+
+Fields:
+- `Selector string`: CSS selector for the target element.
+
+Methods:
+- `Execute(ctx context.Context, wv *Webview) error`: Delegates to `wv.click(ctx, Selector)`.
+
+### ConsoleFilter
+Declaration: `type ConsoleFilter struct`
+
+Filter used by `ConsoleWatcher`.
+
+Fields:
+- `Type string`: Exact message-type match. The watcher compares it directly against `ConsoleMessage.Type`.
+- `Pattern string`: Case-sensitive substring match against `ConsoleMessage.Text`.
+
+### ConsoleHandler
+Declaration: `type ConsoleHandler func(msg ConsoleMessage)`
+
+Callback signature used by `ConsoleWatcher.AddHandler`.
+
+### ConsoleMessage
+Declaration: `type ConsoleMessage struct`
+
+Represents one console message captured from `Runtime.consoleAPICalled`.
+
+Fields:
+- `Type string`: Console message type reported by CDP.
+- `Text string`: Message text built by joining `args[*].value` with spaces.
+- `Timestamp time.Time`: Local capture time assigned in Go with `time.Now()`.
+- `URL string`: URL taken from the first stack-frame entry when present.
+- `Line int`: Line number taken from the first stack-frame entry when present.
+- `Column int`: Column number taken from the first stack-frame entry when present.
+
+### ConsoleWatcher
+Declaration: `type ConsoleWatcher struct`
+
+Higher-level console log collector layered on top of `Webview`. All fields are unexported. New watchers start with an empty message buffer and a default limit of 1000 messages.
+
+Methods:
+- `AddFilter(filter ConsoleFilter)`: Appends a filter. When at least one filter exists, `FilteredMessages` and `FilteredMessagesAll` use OR semantics across filters.
+- `AddHandler(handler ConsoleHandler)`: Registers a callback for future messages captured by this watcher.
+- `Clear()`: Removes all stored messages.
+- `ClearFilters()`: Removes every registered filter.
+- `Count() int`: Returns the current number of stored messages.
+- `ErrorCount() int`: Counts stored messages where `Type == "error"`.
+- `Errors() []ConsoleMessage`: Returns a collected slice of error messages.
+- `ErrorsAll() iter.Seq[ConsoleMessage]`: Returns an iterator that yields stored messages whose type is exactly `"error"`.
+- `FilteredMessages() []ConsoleMessage`: Returns a collected slice of messages that match the current filter set, or all messages when no filters exist.
+- `FilteredMessagesAll() iter.Seq[ConsoleMessage]`: Returns an iterator over the current filtered view.
+- `HasErrors() bool`: Reports whether any stored message has `Type == "error"`.
+- `Messages() []ConsoleMessage`: Returns a collected slice of all stored messages.
+- `MessagesAll() iter.Seq[ConsoleMessage]`: Returns an iterator over the stored message buffer.
+- `SetLimit(limit int)`: Replaces the retention limit used for future appends. Existing messages are only trimmed on later writes.
+- `WaitForError(ctx context.Context) (*ConsoleMessage, error)`: Equivalent to `WaitForMessage(ctx, ConsoleFilter{Type: "error"})`.
+- `WaitForMessage(ctx context.Context, filter ConsoleFilter) (*ConsoleMessage, error)`: Returns the first already-stored message that matches `filter`, otherwise registers a temporary handler and waits for the next matching message or `ctx.Done()`.
+- `Warnings() []ConsoleMessage`: Returns a collected slice of messages whose type is exactly `"warning"`.
+- `WarningsAll() iter.Seq[ConsoleMessage]`: Returns an iterator over stored messages whose type is exactly `"warning"`.
+
+### DoubleClickAction
+Declaration: `type DoubleClickAction struct`
+
+Double-click action for an element selected by CSS.
+
+Fields:
+- `Selector string`: CSS selector for the target element.
+
+Methods:
+- `Execute(ctx context.Context, wv *Webview) error`: Uses a JavaScript `dblclick` fallback when the element has no bounding box; otherwise sends two `mousePressed` and `mouseReleased` pairs with increasing `clickCount` values at the element centre.
+
+### ElementInfo
+Declaration: `type ElementInfo struct`
+
+Represents DOM metadata returned by `Webview.querySelector` and `Webview.querySelectorAll`.
+
+Fields:
+- `NodeID int`: CDP node ID used for later DOM operations.
+- `TagName string`: `nodeName` returned by `DOM.describeNode`.
+- `Attributes map[string]string`: Attributes parsed from the alternating key/value array returned by CDP.
+- `InnerHTML string`: Declared field for inner HTML content. The current implementation does not populate it.
+- `InnerText string`: Declared field for inner text content. The current implementation does not populate it.
+- `BoundingBox *BoundingBox`: Element box derived from `DOM.getBoxModel`. It is `nil` when box lookup fails.
+
+### ExceptionInfo
+Declaration: `type ExceptionInfo struct`
+
+Represents one `Runtime.exceptionThrown` event captured by `ExceptionWatcher`.
+
+Fields:
+- `Text string`: Exception text, overridden by `exception.description` when CDP provides one.
+- `LineNumber int`: Line number reported by CDP.
+- `ColumnNumber int`: Column number reported by CDP.
+- `URL string`: Source URL reported by CDP.
+- `StackTrace string`: Stack trace formatted in Go as one `at function (url:line:column)` line per call frame.
+- `Timestamp time.Time`: Local capture time assigned in Go with `time.Now()`.
+
+### ExceptionWatcher
+Declaration: `type ExceptionWatcher struct`
+
+Collector for JavaScript exceptions emitted by the bound `Webview`. All fields are unexported.
+
+Methods:
+- `AddHandler(handler func(ExceptionInfo))`: Registers a callback for future exception events.
+- `Clear()`: Removes all stored exceptions.
+- `Count() int`: Returns the current number of stored exceptions.
+- `Exceptions() []ExceptionInfo`: Returns a collected slice of all stored exceptions.
+- `ExceptionsAll() iter.Seq[ExceptionInfo]`: Returns an iterator over the stored exception buffer.
+- `HasExceptions() bool`: Reports whether any exceptions have been captured.
+- `WaitForException(ctx context.Context) (*ExceptionInfo, error)`: Returns the most recently stored exception immediately when one already exists; otherwise registers a temporary handler and waits for the next exception or `ctx.Done()`.
+
+### FocusAction
+Declaration: `type FocusAction struct`
+
+Moves focus to an element selected by CSS.
+
+Fields:
+- `Selector string`: CSS selector passed to `document.querySelector`.
+
+Methods:
+- `Execute(ctx context.Context, wv *Webview) error`: Runs `document.querySelector(Selector)?.focus()` through `wv.evaluate`.
+
+### HoverAction
+Declaration: `type HoverAction struct`
+
+Moves the mouse pointer over an element.
+
+Fields:
+- `Selector string`: CSS selector for the target element.
+
+Methods:
+- `Execute(ctx context.Context, wv *Webview) error`: Looks up the element, requires a non-nil bounding box, computes the box centre, and sends one `Input.dispatchMouseEvent` call with `type: "mouseMoved"`.
+
+### NavigateAction
+Declaration: `type NavigateAction struct`
+
+Action wrapper for page navigation.
+
+Fields:
+- `URL string`: URL passed to `Page.navigate`.
+
+Methods:
+- `Execute(ctx context.Context, wv *Webview) error`: Calls `Page.navigate` and then waits until `document.readyState == "complete"`.
+
+### Option
+Declaration: `type Option func(*Webview) error`
+
+Functional configuration hook applied by `New`. The exported option constructors are `WithDebugURL`, `WithTimeout`, and `WithConsoleLimit`.
+
+### PressKeyAction
+Declaration: `type PressKeyAction struct`
+
+Key-press action implemented through `Input.dispatchKeyEvent`.
+
+Fields:
+- `Key string`: Key name or character to send.
+
+Methods:
+- `Execute(ctx context.Context, wv *Webview) error`: Uses explicit CDP key metadata for common keys such as `Enter`, `Tab`, arrow keys, `Delete`, and paging keys. For any other string it sends a `keyDown` with `text: Key` followed by a bare `keyUp`.
+
+### RemoveAttributeAction
+Declaration: `type RemoveAttributeAction struct`
+
+Removes a DOM attribute.
+
+Fields:
+- `Selector string`: CSS selector for the target element.
+- `Attribute string`: Attribute name to remove.
+
+Methods:
+- `Execute(ctx context.Context, wv *Webview) error`: Runs `document.querySelector(Selector)?.removeAttribute(Attribute)` through `wv.evaluate`.
+
+### RightClickAction
+Declaration: `type RightClickAction struct`
+
+Context-click action for an element selected by CSS.
+
+Fields:
+- `Selector string`: CSS selector for the target element.
+
+Methods:
+- `Execute(ctx context.Context, wv *Webview) error`: Uses a JavaScript `contextmenu` fallback when the element has no bounding box; otherwise sends `mousePressed` and `mouseReleased` with `button: "right"` at the element centre.
+
+### ScrollAction
+Declaration: `type ScrollAction struct`
+
+Window scroll action.
+
+Fields:
+- `X int`: Horizontal scroll target passed to `window.scrollTo`.
+- `Y int`: Vertical scroll target passed to `window.scrollTo`.
+
+Methods:
+- `Execute(ctx context.Context, wv *Webview) error`: Evaluates `window.scrollTo(X, Y)`.
+
+### ScrollIntoViewAction
+Declaration: `type ScrollIntoViewAction struct`
+
+Scrolls a selected element into view.
+
+Fields:
+- `Selector string`: CSS selector for the target element.
+
+Methods:
+- `Execute(ctx context.Context, wv *Webview) error`: Evaluates `document.querySelector(Selector)?.scrollIntoView({behavior: "smooth", block: "center"})`.
+
+### SelectAction
+Declaration: `type SelectAction struct`
+
+Select-element value setter.
+
+Fields:
+- `Selector string`: CSS selector for the target element.
+- `Value string`: Option value assigned to `el.value`.
+
+Methods:
+- `Execute(ctx context.Context, wv *Webview) error`: Sets `el.value` and dispatches a bubbling `change` event when the element exists.
+
+### SetAttributeAction
+Declaration: `type SetAttributeAction struct`
+
+Sets a DOM attribute on the selected element.
+
+Fields:
+- `Selector string`: CSS selector for the target element.
+- `Attribute string`: Attribute name to set.
+- `Value string`: Attribute value passed to `setAttribute`.
+
+Methods:
+- `Execute(ctx context.Context, wv *Webview) error`: Runs `document.querySelector(Selector)?.setAttribute(Attribute, Value)` through `wv.evaluate`.
+
+### SetValueAction
+Declaration: `type SetValueAction struct`
+
+Directly sets an input-like value.
+
+Fields:
+- `Selector string`: CSS selector for the target element.
+- `Value string`: Value assigned to `el.value`.
+
+Methods:
+- `Execute(ctx context.Context, wv *Webview) error`: Sets `el.value` and dispatches bubbling `input` and `change` events when the element exists.
+
+### TargetInfo
+Declaration: `type TargetInfo struct`
+
+Represents one target entry returned by Chrome's `/json` and `/json/new` endpoints.
+
+Fields:
+- `ID string`: Chrome target ID.
+- `Type string`: Target type such as `page`.
+- `Title string`: Target title reported by Chrome.
+- `URL string`: Target URL reported by Chrome.
+- `WebSocketDebuggerURL string`: WebSocket debugger URL for the target.
+
+### TypeAction
+Declaration: `type TypeAction struct`
+
+Action wrapper for `Webview` text entry.
+
+Fields:
+- `Selector string`: CSS selector for the target element.
+- `Text string`: Text sent one rune at a time.
+
+Methods:
+- `Execute(ctx context.Context, wv *Webview) error`: Delegates to `wv.typeText(ctx, Selector, Text)`.
+
+### WaitAction
+Declaration: `type WaitAction struct`
+
+Time-based delay action.
+
+Fields:
+- `Duration time.Duration`: Delay length.
+
+Methods:
+- `Execute(ctx context.Context, wv *Webview) error`: Waits for `Duration` with `time.After`, but returns `ctx.Err()` immediately if the context is cancelled first.
+
+### WaitForSelectorAction
+Declaration: `type WaitForSelectorAction struct`
+
+Action wrapper for selector polling.
+
+Fields:
+- `Selector string`: CSS selector to wait for.
+
+Methods:
+- `Execute(ctx context.Context, wv *Webview) error`: Delegates to `wv.waitForSelector(ctx, Selector)`.
+
+### Webview
+Declaration: `type Webview struct`
+
+High-level browser automation client built on `CDPClient`. All fields are unexported. Instances created by `New` carry a default timeout of 30 seconds and a default console retention limit of 1000 messages.
+
+Methods:
+- `ClearConsole()`: Removes all console messages stored on the `Webview`.
+- `Click(selector string) error`: Creates a timeout-scoped context and delegates to the internal click path. The internal click logic queries the element, uses a JavaScript `.click()` fallback when there is no bounding box, and otherwise sends left-button press and release events at the element centre.
+- `Close() error`: Cancels the `Webview` context and closes the underlying `CDPClient` when one exists.
+- `DragAndDrop(sourceSelector, targetSelector string) error`: Looks up both elements, requires bounding boxes for both, then sends `mousePressed` at the source centre, `mouseMoved` to the target centre, and `mouseReleased` at the target centre.
+- `Evaluate(script string) (any, error)`: Evaluates JavaScript through `Runtime.evaluate` with `returnByValue: true` and `awaitPromise: true`. When CDP reports `exceptionDetails`, the method returns a wrapped JavaScript error.
+- `GetConsole() []ConsoleMessage`: Returns a collected slice of stored console messages.
+- `GetConsoleAll() iter.Seq[ConsoleMessage]`: Returns an iterator over the stored console message buffer.
+- `GetHTML(selector string) (string, error)`: Returns `document.documentElement.outerHTML` when `selector` is empty; otherwise returns `document.querySelector(selector)?.outerHTML || ""`.
+- `GetTitle() (string, error)`: Evaluates `document.title` and requires the result to be a string.
+- `GetURL() (string, error)`: Evaluates `window.location.href` and requires the result to be a string.
+- `GoBack() error`: Calls `Page.goBackOrForward` with `delta: -1`.
+- `GoForward() error`: Calls `Page.goBackOrForward` with `delta: 1`.
+- `Navigate(url string) error`: Calls `Page.navigate` and then polls `document.readyState` every 100 ms until it becomes `"complete"` or the timeout expires.
+- `QuerySelector(selector string) (*ElementInfo, error)`: Fetches the document root, runs `DOM.querySelector`, errors when the selector does not resolve, and returns `ElementInfo` for the matched node.
+- `QuerySelectorAll(selector string) ([]*ElementInfo, error)`: Runs `DOM.querySelectorAll` and returns one `ElementInfo` per node ID whose metadata lookup succeeds. Nodes whose metadata fetch fails are skipped.
+- `QuerySelectorAllAll(selector string) iter.Seq[*ElementInfo]`: Returns an iterator that runs `QuerySelectorAll` under the `Webview` timeout and yields each element. Errors produce an empty iterator.
+- `Reload() error`: Calls `Page.reload` and then waits for `document.readyState == "complete"`.
+- `Screenshot() ([]byte, error)`: Calls `Page.captureScreenshot` with `format: "png"`, decodes the returned base64 payload, and returns the PNG bytes.
+- `SetUserAgent(userAgent string) error`: Calls `Emulation.setUserAgentOverride`.
+- `SetViewport(width, height int) error`: Calls `Emulation.setDeviceMetricsOverride` with the supplied size, `deviceScaleFactor: 1`, and `mobile: false`.
+- `Type(selector, text string) error`: Creates a timeout-scoped context and delegates to the internal typing path. The internal logic focuses the element with JavaScript, then sends one `keyDown` with `text` and one `keyUp` per rune in `text`.
+- `UploadFile(selector string, filePaths []string) error`: Resolves the target node with `QuerySelector` and passes its node ID to `DOM.setFileInputFiles`.
+- `WaitForSelector(selector string) error`: Polls `!!document.querySelector(selector)` every 100 ms until it becomes true or the timeout expires.
+
+## Functions
+
+### FormatConsoleOutput
+`func FormatConsoleOutput(messages []ConsoleMessage) string`
+
+Formats each message as `HH:MM:SS.mmm [PREFIX] text\n`. Prefixes are `[ERROR]` for `error`, `[WARN]` for `warning`, `[INFO]` for `info`, `[DEBUG]` for `debug`, and `[LOG]` for every other type.
+
+### GetVersion
+`func GetVersion(debugURL string) (map[string]string, error)`
+
+Validates `debugURL`, requests `/json/version`, and decodes the response body into `map[string]string`.
+
+### ListTargets
+`func ListTargets(debugURL string) ([]TargetInfo, error)`
+
+Validates `debugURL`, requests `/json`, and decodes the response body into a slice of `TargetInfo`.
+
+### ListTargetsAll
+`func ListTargetsAll(debugURL string) iter.Seq[TargetInfo]`
+
+Iterator wrapper around `ListTargets`. When `ListTargets` fails, the iterator yields no values.
+
+### New
+`func New(opts ...Option) (*Webview, error)`
+
+Creates a `Webview`, applies `opts` in order, requires an option that installs a `CDPClient`, enables the `Runtime`, `Page`, and `DOM` domains, and subscribes console capture. On any option or initialisation failure it cancels the context and closes the client when one was created.
+
+### NewActionSequence
+`func NewActionSequence() *ActionSequence`
+
+Creates an empty `ActionSequence`.
+
+### NewAngularHelper
+`func NewAngularHelper(wv *Webview) *AngularHelper`
+
+Creates an `AngularHelper` bound to `wv` with a 30-second default timeout.
+
+### NewCDPClient
+`func NewCDPClient(debugURL string) (*CDPClient, error)`
+
+Validates that `debugURL` is an `http` or `https` DevTools root URL with no credentials, query, fragment, or non-root path. The function requests `/json`, picks the first `page` target with a debugger WebSocket URL, creates a new target via `/json/new` when none exists, validates that the WebSocket host matches the debug host, dials the socket, and starts the client's read loop.
+
+### NewConsoleWatcher
+`func NewConsoleWatcher(wv *Webview) *ConsoleWatcher`
+
+Creates a `ConsoleWatcher`, initialises an empty message buffer with a 1000-message limit, and subscribes it to `Runtime.consoleAPICalled` events on `wv.client`.
+
+### NewExceptionWatcher
+`func NewExceptionWatcher(wv *Webview) *ExceptionWatcher`
+
+Creates an `ExceptionWatcher`, initialises an empty exception buffer, and subscribes it to `Runtime.exceptionThrown` events on `wv.client`.
+
+### WithConsoleLimit
+`func WithConsoleLimit(limit int) Option`
+
+Returns an `Option` that replaces `Webview.consoleLimit`. The default used by `New` is 1000.
+
+### WithDebugURL
+`func WithDebugURL(url string) Option`
+
+Returns an `Option` that dials a `CDPClient` immediately and stores it on the `Webview`.
+
+### WithTimeout
+`func WithTimeout(d time.Duration) Option`
+
+Returns an `Option` that replaces the default per-operation timeout used by `Webview` methods.

webview.go

@@ -25,13 +25,12 @@ package webview
 import (
 	"context"
 	"encoding/base64"
-	"fmt"
 	"iter"
 	"slices"
-	"strings"
 	"sync"
 	"time"
 
+	core "dappco.re/go/core"
 	coreerr "dappco.re/go/core/log"
 )
 
@@ -115,7 +114,7 @@ func New(opts ...Option) (*Webview, error) {
 		ctx:          ctx,
 		cancel:       cancel,
 		timeout:      30 * time.Second,
-		consoleLogs:  make([]ConsoleMessage, 0, 100),
+		consoleLogs:  make([]ConsoleMessage, 0, 1000),
 		consoleLimit: 1000,
 	}
 
@@ -337,7 +336,7 @@ func (wv *Webview) GetHTML(selector string) (string, error) {
 	if selector == "" {
 		script = "document.documentElement.outerHTML"
 	} else {
-		script = fmt.Sprintf("document.querySelector(%q)?.outerHTML || ''", selector)
+		script = core.Sprintf("document.querySelector(%q)?.outerHTML || ''", selector)
 	}
 
 	result, err := wv.evaluate(ctx, script)
@@ -463,14 +462,14 @@ func (wv *Webview) handleConsoleEvent(params map[string]any) {
 
 	// Extract args
 	args, _ := params["args"].([]any)
-	var text strings.Builder
+	text := core.NewBuilder()
 	for i, arg := range args {
 		if argMap, ok := arg.(map[string]any); ok {
 			if val, ok := argMap["value"]; ok {
 				if i > 0 {
 					text.WriteString(" ")
 				}
-				text.WriteString(fmt.Sprint(val))
+				text.WriteString(core.Sprint(val))
 			}
 		}
 	}
@@ -526,7 +525,7 @@ func (wv *Webview) waitForSelector(ctx context.Context, selector string) error {
 	ticker := time.NewTicker(100 * time.Millisecond)
 	defer ticker.Stop()
 
-	script := fmt.Sprintf("!!document.querySelector(%q)", selector)
+	script := core.Sprintf("!!document.querySelector(%q)", selector)
 
 	for {
 		select {
@@ -680,6 +679,8 @@ func (wv *Webview) getElementInfo(ctx context.Context, nodeID int) (*ElementInfo
 		}
 	}
 
+	innerHTML, innerText := wv.getElementContent(ctx, nodeID)
+
 	// Get bounding box
 	var box *BoundingBox
 	if boxResult, err := wv.client.Call(ctx, "DOM.getBoxModel", map[string]any{
@@ -705,10 +706,61 @@ func (wv *Webview) getElementInfo(ctx context.Context, nodeID int) (*ElementInfo
 		NodeID:      nodeID,
 		TagName:     tagName,
 		Attributes:  attrs,
+		InnerHTML:   innerHTML,
+		InnerText:   innerText,
 		BoundingBox: box,
 	}, nil
 }
 
+// getElementContent retrieves the element's inner HTML and inner text.
+func (wv *Webview) getElementContent(ctx context.Context, nodeID int) (string, string) {
+	resolveResult, err := wv.client.Call(ctx, "DOM.resolveNode", map[string]any{
+		"nodeId": nodeID,
+	})
+	if err != nil {
+		return "", ""
+	}
+
+	object, ok := resolveResult["object"].(map[string]any)
+	if !ok {
+		return "", ""
+	}
+
+	objectID, ok := object["objectId"].(string)
+	if !ok || objectID == "" {
+		return "", ""
+	}
+
+	callResult, err := wv.client.Call(ctx, "Runtime.callFunctionOn", map[string]any{
+		"objectId":            objectID,
+		"functionDeclaration": "function() { return { innerHTML: this.innerHTML || '', innerText: this.innerText || '' }; }",
+		"returnByValue":       true,
+		"awaitPromise":        true,
+	})
+	if err != nil {
+		return "", ""
+	}
+
+	return parseElementContent(callResult)
+}
+
+// parseElementContent extracts inner HTML and inner text from a CDP response.
+func parseElementContent(result map[string]any) (string, string) {
+	resultObj, ok := result["result"].(map[string]any)
+	if !ok {
+		return "", ""
+	}
+
+	value, ok := resultObj["value"].(map[string]any)
+	if !ok {
+		return "", ""
+	}
+
+	innerHTML, _ := value["innerHTML"].(string)
+	innerText, _ := value["innerText"].(string)
+	return innerHTML, innerText
+}
+
 // click performs a click on an element.
 func (wv *Webview) click(ctx context.Context, selector string) error {
 	// Find element and get its center coordinates
@@ -719,7 +771,7 @@ func (wv *Webview) click(ctx context.Context, selector string) error {
 
 	if elem.BoundingBox == nil {
 		// Fallback to JavaScript click
-		script := fmt.Sprintf("document.querySelector(%q)?.click()", selector)
+		script := core.Sprintf("document.querySelector(%q)?.click()", selector)
 		_, err := wv.evaluate(ctx, script)
 		return err
 	}
@@ -748,7 +800,7 @@ func (wv *Webview) click(ctx context.Context, selector string) error {
 // typeText types text into an element.
 func (wv *Webview) typeText(ctx context.Context, selector, text string) error {
 	// Focus the element first
-	script := fmt.Sprintf("document.querySelector(%q)?.focus()", selector)
+	script := core.Sprintf("document.querySelector(%q)?.focus()", selector)
 	_, err := wv.evaluate(ctx, script)
 	if err != nil {
 		return coreerr.E("Webview.typeText", "failed to focus element", err)

webview_test.go

@@ -458,6 +458,26 @@ func TestGetString_Good(t *testing.T) {
 	}
 }
 
+// TestParseElementContent_Good verifies inner content extraction from CDP output.
+func TestParseElementContent_Good(t *testing.T) {
+	result := map[string]any{
+		"result": map[string]any{
+			"value": map[string]any{
+				"innerHTML": "<span>Hello</span>",
+				"innerText": "Hello",
+			},
+		},
+	}
+
+	innerHTML, innerText := parseElementContent(result)
+	if innerHTML != "<span>Hello</span>" {
+		t.Fatalf("parseElementContent innerHTML = %q, want %q", innerHTML, "<span>Hello</span>")
+	}
+	if innerText != "Hello" {
+		t.Fatalf("parseElementContent innerText = %q, want %q", innerText, "Hello")
+	}
+}
+
 // TestWaitAction_Good_ContextCancelled verifies WaitAction respects context cancellation.
 func TestWaitAction_Good_ContextCancelled(t *testing.T) {
 	ctx, cancel := context.WithCancel(context.Background())