feat: add DevMode with logging, HTTP interception, and debug panel

- DevLogStore: centralized log store with Flow-based observation (INFO/WARN/ERROR/EXCEPTION levels)
- DevHttpInterceptor: capture request/response pairs with timing and body details
- DevPanel: bottom panel with Logs/Network/Errors tabs, expandable entries, JSON formatting
- Integrated into BricksHttp (all HTTP methods), BricksParser, ActionDispatcher, Main
- Move Main.kt from shared/ to test/generic-client/ (library module should not have main)
- Add test/generic-client/ as generic bricks-mp desktop host with DevMode toggle
- Add kotlinx-datetime dependency for timestamp handling
- Add materialIconsExtended for DevPanel icons

gradle/libs.versions.toml

@@ -6,9 +6,11 @@ ktor = "3.0.3"
 serialization = "1.7.3"
 coroutines = "1.9.0"
 coil = "3.0.4"
+datetime = "0.6.1"
 
 [libraries]
 kotlinx-serialization-json = { module = "org.jetbrains.kotlinx:kotlinx-serialization-json", version.ref = "serialization" }
+kotlinx-datetime = { module = "org.jetbrains.kotlinx:kotlinx-datetime", version.ref = "datetime" }
 ktor-client-core = { module = "io.ktor:ktor-client-core", version.ref = "ktor" }
 ktor-client-cio = { module = "io.ktor:ktor-client-cio", version.ref = "ktor" }
 ktor-client-darwin = { module = "io.ktor:ktor-client-darwin", version.ref = "ktor" }

shared/build.gradle.kts

@@ -1,4 +1,3 @@
-import org.jetbrains.compose.desktop.application.dsl.TargetFormat
 import org.jetbrains.kotlin.gradle.ExperimentalKotlinGradlePluginApi
 
 plugins {
@@ -28,8 +27,10 @@ kotlin {
             implementation(compose.runtime)
             implementation(compose.foundation)
             implementation(compose.material3)
+            implementation(compose.materialIconsExtended)
             implementation(compose.ui)
             implementation(libs.kotlinx.serialization.json)
+            implementation(libs.kotlinx.datetime)
             implementation(libs.ktor.client.core)
             implementation(libs.ktor.client.cio)
             implementation(libs.ktor.client.content.negotiation)
@@ -51,14 +52,3 @@ kotlin {
 //     compileSdk = 35
 //     defaultConfig { minSdk = 24 }
 // }
-
-compose.desktop {
-    application {
-        mainClass = "com.bricks.MainKt"
-        nativeDistributions {
-            targetFormats(TargetFormat.Dmg, TargetFormat.Msi, TargetFormat.Deb)
-            packageName = "bricks-mp"
-            packageVersion = "1.0.0"
-        }
-    }
-}

shared/src/commonMain/kotlin/com/bricks/mp/actions/ActionDispatcher.kt

@@ -1,6 +1,9 @@
 package com.bricks.mp.actions
 
 import com.bricks.mp.core.*
+import com.bricks.mp.dev.DevLogStore
+import com.bricks.mp.dev.DevLogLevel
+import com.bricks.mp.dev.DevLogSource
 import kotlinx.coroutines.CoroutineScope
 import kotlinx.coroutines.launch
 import kotlinx.serialization.json.JsonPrimitive
@@ -48,13 +51,35 @@ class ActionDispatcher(
      * 分发事件
      */
     fun dispatch(bind: BricksBind) {
-        when (bind.actiontype) {
-            "urlwidget" -> handleUrlWidget(bind)
-            "method" -> handleMethod(bind)
-            "script" -> handleScript(bind)
-            "registerfunction" -> handleRegisterFunction(bind)
-            "event" -> handleEvent(bind)
-            else -> println("[Bricks] Unknown actiontype: ${bind.actiontype}")
+        DevLogStore.log(
+            level = DevLogLevel.INFO,
+            message = "Dispatch: actiontype=${bind.actiontype} event=${bind.event} target=${bind.target}",
+            source = DevLogSource.ACTION
+        )
+        try {
+            when (bind.actiontype) {
+                "urlwidget" -> handleUrlWidget(bind)
+                "method" -> handleMethod(bind)
+                "script" -> handleScript(bind)
+                "registerfunction" -> handleRegisterFunction(bind)
+                "event" -> handleEvent(bind)
+                else -> {
+                    DevLogStore.log(
+                        level = DevLogLevel.WARN,
+                        message = "Unknown actiontype: ${bind.actiontype}",
+                        source = DevLogSource.ACTION
+                    )
+                    println("[Bricks] Unknown actiontype: ${bind.actiontype}")
+                }
+            }
+        } catch (e: Exception) {
+            DevLogStore.log(
+                level = DevLogLevel.ERROR,
+                message = "Action dispatch failed: ${bind.actiontype}",
+                details = "event=${bind.event}, target=${bind.target}",
+                source = DevLogSource.ACTION,
+                stackTrace = e.stackTraceToString()
+            )
         }
     }
 
@@ -63,8 +88,23 @@ class ActionDispatcher(
             if (it is JsonPrimitive) it.contentOrNull else null
         } ?: bind.url ?: return
 
+        DevLogStore.log(
+            level = DevLogLevel.INFO,
+            message = "Loading URL widget: $url",
+            source = DevLogSource.ACTION
+        )
         scope.launch {
-            loadWidget(url, showAsDialog = false)
+            try {
+                loadWidget(url, showAsDialog = false)
+            } catch (e: Exception) {
+                DevLogStore.log(
+                    level = DevLogLevel.ERROR,
+                    message = "Failed to load URL widget: $url",
+                    details = e.message,
+                    source = DevLogSource.ACTION,
+                    stackTrace = e.stackTraceToString()
+                )
+            }
         }
     }
 

shared/src/commonMain/kotlin/com/bricks/mp/core/BricksHttp.kt

@@ -1,5 +1,10 @@
 package com.bricks.mp.core
 
+import com.bricks.mp.dev.DevHttpInterceptor
+import com.bricks.mp.dev.DevLogSource
+import com.bricks.mp.dev.DevLogLevel
+import com.bricks.mp.dev.DevLogStore
+import kotlinx.datetime.Clock
 import io.ktor.client.*
 import io.ktor.client.engine.cio.*
 import io.ktor.client.plugins.cookies.*
@@ -73,8 +78,22 @@ class BricksHttp(private val context: BricksContext? = null) {
         params: Map<String, String> = emptyMap(),
         authToken: String = ""
     ): JsonObject {
-        val text = getText(url, params, authToken)
-        return parseJsonObjectOrError(text)
+        val devEntry = DevHttpInterceptor.recordRequest(url, "GET")
+        val startTime = Clock.System.now()
+        return try {
+            val text = getText(url, params, authToken, skipLog = true)
+            val duration = Clock.System.now() - startTime
+            DevHttpInterceptor.recordResponse(devEntry, 200, text, duration.inWholeMilliseconds)
+            parseJsonObjectOrError(text)
+        } catch (e: BricksHttpException) {
+            val duration = Clock.System.now() - startTime
+            DevHttpInterceptor.recordError(devEntry, e.message ?: "HTTP ${e.statusCode}", duration.inWholeMilliseconds)
+            throw e
+        } catch (e: Exception) {
+            val duration = Clock.System.now() - startTime
+            DevHttpInterceptor.recordError(devEntry, e.message ?: "Unknown error", duration.inWholeMilliseconds)
+            throw e
+        }
     }
 
     /**
@@ -88,16 +107,31 @@ class BricksHttp(private val context: BricksContext? = null) {
     ): JsonObject {
         val requestParams = params.withBackendContextIfNeeded(url)
         val requestUrl = url.withQueryParameters(requestParams)
-        val response = client.post(requestUrl) {
-            contentType(ContentType.Application.Json)
-            setBody(body)
-            if (authToken.isNotEmpty()) {
-                header(HttpHeaders.Authorization, "Bearer $authToken")
+        val requestBodyStr = Json { encodeDefaults = false }.encodeToString(JsonObject.serializer(), body)
+        val devEntry = DevHttpInterceptor.recordRequest(requestUrl, "POST", requestBodyStr)
+        val startTime = Clock.System.now()
+        return try {
+            val response = client.post(requestUrl) {
+                contentType(ContentType.Application.Json)
+                setBody(body)
+                if (authToken.isNotEmpty()) {
+                    header(HttpHeaders.Authorization, "Bearer $authToken")
+                }
             }
+            val text = response.bodyAsText()
+            val duration = Clock.System.now() - startTime
+            DevHttpInterceptor.recordResponse(devEntry, response.status.value, text, duration.inWholeMilliseconds)
+            response.throwIfHttpError(text, requestUrl)
+            parseJsonObjectOrError(text)
+        } catch (e: BricksHttpException) {
+            val duration = Clock.System.now() - startTime
+            DevHttpInterceptor.recordError(devEntry, e.message ?: "HTTP ${e.statusCode}", duration.inWholeMilliseconds)
+            throw e
+        } catch (e: Exception) {
+            val duration = Clock.System.now() - startTime
+            DevHttpInterceptor.recordError(devEntry, e.message ?: "Unknown error", duration.inWholeMilliseconds)
+            throw e
         }
-        val text = response.bodyAsText()
-        response.throwIfHttpError(text, requestUrl)
-        return parseJsonObjectOrError(text)
     }
 
     /**
@@ -113,16 +147,30 @@ class BricksHttp(private val context: BricksContext? = null) {
         val formBody = form.entries.joinToString("&") { (k, v) ->
             "${k.encodeURLParameter()}=${v.encodeURLParameter()}"
         }
-        val response = client.post(requestUrl) {
-            contentType(ContentType.Application.FormUrlEncoded)
-            setBody(formBody)
-            if (authToken.isNotEmpty()) {
-                header(HttpHeaders.Authorization, "Bearer $authToken")
+        val devEntry = DevHttpInterceptor.recordRequest(requestUrl, "POST", formBody)
+        val startTime = Clock.System.now()
+        return try {
+            val response = client.post(requestUrl) {
+                contentType(ContentType.Application.FormUrlEncoded)
+                setBody(formBody)
+                if (authToken.isNotEmpty()) {
+                    header(HttpHeaders.Authorization, "Bearer $authToken")
+                }
             }
+            val text = response.bodyAsText()
+            val duration = Clock.System.now() - startTime
+            DevHttpInterceptor.recordResponse(devEntry, response.status.value, text, duration.inWholeMilliseconds)
+            response.throwIfHttpError(text, requestUrl)
+            text
+        } catch (e: BricksHttpException) {
+            val duration = Clock.System.now() - startTime
+            DevHttpInterceptor.recordError(devEntry, e.message ?: "HTTP ${e.statusCode}", duration.inWholeMilliseconds)
+            throw e
+        } catch (e: Exception) {
+            val duration = Clock.System.now() - startTime
+            DevHttpInterceptor.recordError(devEntry, e.message ?: "Unknown error", duration.inWholeMilliseconds)
+            throw e
         }
-        val text = response.bodyAsText()
-        response.throwIfHttpError(text, requestUrl)
-        return text
     }
 
     /**
@@ -131,18 +179,39 @@ class BricksHttp(private val context: BricksContext? = null) {
     suspend fun getText(
         url: String,
         params: Map<String, String> = emptyMap(),
-        authToken: String = ""
+        authToken: String = "",
+        skipLog: Boolean = false
     ): String {
         val requestParams = params.withBackendContextIfNeeded(url)
         val requestUrl = url.withQueryParameters(requestParams)
-        val response = client.get(requestUrl) {
-            if (authToken.isNotEmpty()) {
-                header(HttpHeaders.Authorization, "Bearer $authToken")
+        val devEntry = if (skipLog) null else DevHttpInterceptor.recordRequest(requestUrl, "GET")
+        val startTime = Clock.System.now()
+        return try {
+            val response = client.get(requestUrl) {
+                if (authToken.isNotEmpty()) {
+                    header(HttpHeaders.Authorization, "Bearer $authToken")
+                }
             }
+            val text = response.bodyAsText()
+            val duration = Clock.System.now() - startTime
+            if (devEntry != null) {
+                DevHttpInterceptor.recordResponse(devEntry, response.status.value, text, duration.inWholeMilliseconds)
+            }
+            response.throwIfHttpError(text, requestUrl)
+            text
+        } catch (e: BricksHttpException) {
+            val duration = Clock.System.now() - startTime
+            if (devEntry != null) {
+                DevHttpInterceptor.recordError(devEntry, e.message ?: "HTTP ${e.statusCode}", duration.inWholeMilliseconds)
+            }
+            throw e
+        } catch (e: Exception) {
+            val duration = Clock.System.now() - startTime
+            if (devEntry != null) {
+                DevHttpInterceptor.recordError(devEntry, e.message ?: "Unknown error", duration.inWholeMilliseconds)
+            }
+            throw e
         }
-        val text = response.bodyAsText()
-        response.throwIfHttpError(text, requestUrl)
-        return text
     }
 
     /**
@@ -153,8 +222,23 @@ class BricksHttp(private val context: BricksContext? = null) {
         authToken: String = ""
     ): BricksWidget {
         val fullUrl = resolveUrl(path)
-        val text = getText(fullUrl, authToken = authToken)
-        return BricksParser.parse(text)
+        val devEntry = DevHttpInterceptor.recordRequest(fullUrl, "GET")
+        val startTime = Clock.System.now()
+        return try {
+            val text = getText(fullUrl, skipLog = true, authToken = authToken)
+            val duration = Clock.System.now() - startTime
+            DevHttpInterceptor.recordResponse(devEntry, 200, text, duration.inWholeMilliseconds)
+            val widget = BricksParser.parse(text)
+            widget
+        } catch (e: BricksHttpException) {
+            val duration = Clock.System.now() - startTime
+            DevHttpInterceptor.recordError(devEntry, e.message ?: "HTTP ${e.statusCode}", duration.inWholeMilliseconds)
+            throw e
+        } catch (e: Exception) {
+            val duration = Clock.System.now() - startTime
+            DevHttpInterceptor.recordError(devEntry, e.message ?: "Unknown error", duration.inWholeMilliseconds)
+            throw e
+        }
     }
 
     /**

shared/src/commonMain/kotlin/com/bricks/mp/core/BricksParser.kt

@@ -1,5 +1,9 @@
 package com.bricks.mp.core
 
+import com.bricks.mp.dev.DevLogEntry
+import com.bricks.mp.dev.DevLogLevel
+import com.bricks.mp.dev.DevLogSource
+import com.bricks.mp.dev.DevLogStore
 import kotlinx.serialization.json.*
 
 /**
@@ -11,9 +15,27 @@ object BricksParser {
      * 从 JSON 字符串解析 Widget 树
      */
     fun parse(jsonString: String): BricksWidget {
-        val json = Json { ignoreUnknownKeys = true; coerceInputValues = true }
-        val element = json.parseToJsonElement(jsonString)
-        return parseElement(element)
+        return try {
+            val json = Json { ignoreUnknownKeys = true; coerceInputValues = true }
+            val element = json.parseToJsonElement(jsonString)
+            DevLogStore.log(
+                level = DevLogLevel.INFO,
+                message = "Parsed widget tree: ${element.jsonObject["widgettype"]?.jsonPrimitive?.content ?: "unknown"}",
+                details = "JSON length: ${jsonString.length} chars",
+                source = DevLogSource.PARSER
+            )
+            parseElement(element)
+        } catch (e: Exception) {
+            val snippet = if (jsonString.length > 500) jsonString.take(500) + "…" else jsonString
+            DevLogStore.log(
+                level = DevLogLevel.ERROR,
+                message = "JSON parse failed: ${e.message}",
+                details = "JSON snippet:\n$snippet",
+                source = DevLogSource.PARSER,
+                stackTrace = e.stackTraceToString()
+            )
+            throw e
+        }
     }
 
     /**

shared/src/commonMain/kotlin/com/bricks/mp/dev/DevHttpInterceptor.kt

@@ -0,0 +1,172 @@
+package com.bricks.mp.dev
+
+import kotlinx.datetime.Clock
+import kotlinx.datetime.Instant
+import kotlinx.serialization.json.Json
+
+/**
+ * Captured HTTP request/response pair for DevMode network inspection.
+ */
+data class DevHttpEntry(
+    val id: Long,
+    val timestamp: Instant,
+    val url: String,
+    val method: String,
+    val requestBody: String? = null,
+    val responseStatus: Int? = null,
+    val responseBody: String? = null,
+    val durationMs: Long? = null,
+    val error: String? = null,
+    val isSuccess: Boolean = error == null
+) {
+    companion object {
+        private var nextId: Long = 0L
+
+        fun start(url: String, method: String, requestBody: String? = null): DevHttpEntry {
+            return DevHttpEntry(
+                id = nextId++,
+                timestamp = Clock.System.now(),
+                url = url,
+                method = method,
+                requestBody = requestBody
+            )
+        }
+    }
+
+    /**
+     * Create a truncated display version of the request body for list views.
+     */
+    fun requestBodySummary(maxLen: Int = 200): String {
+        val body = requestBody ?: return ""
+        return if (body.length > maxLen) body.take(maxLen) + "…" else body
+    }
+
+    /**
+     * Create a truncated display version of the response body.
+     */
+    fun responseBodySummary(maxLen: Int = 200): String {
+        val body = responseBody ?: return ""
+        return if (body.length > maxLen) body.take(maxLen) + "…" else body
+    }
+
+    /**
+     * Try to pretty-print JSON bodies.
+     */
+    fun formatBody(body: String?): String {
+        if (body.isNullOrBlank()) return "(empty)"
+        return try {
+            val json = Json { prettyPrint = true; ignoreUnknownKeys = true }
+            val element = json.parseToJsonElement(body)
+            json.encodeToString(kotlinx.serialization.json.JsonElement.serializer(), element)
+        } catch (e: Exception) {
+            body
+        }
+    }
+}
+
+/**
+ * HTTP request/response interceptor for DevMode.
+ * Maintains a capped list of recent HTTP exchanges observable via Flow.
+ */
+object DevHttpInterceptor {
+
+    private const val MAX_ENTRIES = 100
+
+    private var _entries = mutableListOf<DevHttpEntry>()
+    private val _flow = kotlinx.coroutines.flow.MutableStateFlow<List<DevHttpEntry>>(emptyList())
+    val entries: kotlinx.coroutines.flow.Flow<List<DevHttpEntry>> = _flow
+
+    /**
+     * Record the start of an HTTP request.
+     * Returns the entry that should later be completed via [complete].
+     */
+    fun recordRequest(url: String, method: String, requestBody: String? = null): DevHttpEntry {
+        val entry = DevHttpEntry.start(url, method, requestBody)
+        synchronized(this) {
+            _entries.add(entry)
+            if (_entries.size > MAX_ENTRIES) {
+                _entries = _entries.drop(_entries.size - MAX_ENTRIES).toMutableList()
+            }
+            _flow.value = _entries.toList()
+        }
+        DevLogStore.log(
+            level = DevLogLevel.INFO,
+            message = "$method $url",
+            details = requestBody?.let { "Body: ${it.take(500)}" },
+            source = DevLogSource.HTTP
+        )
+        return entry
+    }
+
+    /**
+     * Record a successful response, updating the entry with status, body, and duration.
+     */
+    fun recordResponse(
+        entry: DevHttpEntry,
+        statusCode: Int,
+        responseBody: String?,
+        durationMs: Long
+    ) {
+        val level = if (statusCode in 200..299) DevLogLevel.INFO else DevLogLevel.WARN
+        val updated = entry.copy(
+            responseStatus = statusCode,
+            responseBody = responseBody,
+            durationMs = durationMs
+        )
+        synchronized(this) {
+            val idx = _entries.indexOfFirst { it.id == entry.id }
+            if (idx >= 0) _entries[idx] = updated
+            _flow.value = _entries.toList()
+        }
+        DevLogStore.log(
+            level = level,
+            message = "${entry.method} ${entry.url} -> $statusCode (${durationMs}ms)",
+            details = responseBody?.let { "Body: ${it.take(500)}" },
+            source = DevLogSource.HTTP
+        )
+    }
+
+    /**
+     * Record a failed request.
+     */
+    fun recordError(
+        entry: DevHttpEntry,
+        error: String,
+        durationMs: Long? = null
+    ) {
+        val updated = entry.copy(
+            error = error,
+            durationMs = durationMs
+        )
+        synchronized(this) {
+            val idx = _entries.indexOfFirst { it.id == entry.id }
+            if (idx >= 0) _entries[idx] = updated
+            _flow.value = _entries.toList()
+        }
+        DevLogStore.log(
+            level = DevLogLevel.EXCEPTION,
+            message = "${entry.method} ${entry.url} -> ERROR: $error",
+            source = DevLogSource.HTTP
+        )
+    }
+
+    /**
+     * Clear all HTTP entries.
+     */
+    fun clear() {
+        synchronized(this) {
+            _entries.clear()
+            _flow.value = emptyList()
+        }
+    }
+
+    /**
+     * Get the current snapshot.
+     */
+    fun snapshot(): List<DevHttpEntry> = synchronized(this) { _entries.toList() }
+
+    /**
+     * Get error count.
+     */
+    fun errorCount(): Int = synchronized(this) { _entries.count { !it.isSuccess } }
+}

shared/src/commonMain/kotlin/com/bricks/mp/dev/DevLog.kt

@@ -0,0 +1,161 @@
+package com.bricks.mp.dev
+
+import kotlinx.coroutines.flow.Flow
+import kotlinx.coroutines.flow.MutableStateFlow
+import kotlinx.coroutines.flow.asStateFlow
+import kotlinx.coroutines.flow.map
+import kotlinx.datetime.Clock
+import kotlinx.datetime.Instant
+
+/**
+ * Log level for DevMode entries.
+ */
+enum class DevLogLevel {
+    INFO,
+    WARN,
+    ERROR,
+    EXCEPTION;
+
+    fun badgeColor(): Long = when (this) {
+        INFO -> 0xFF1976D2    // Blue
+        WARN -> 0xFFFFA000    // Amber
+        ERROR -> 0xFFD32F2F   // Red
+        EXCEPTION -> 0xFFB71C1C  // Deep Red
+    }
+
+    fun label(): String = when (this) {
+        INFO -> "INFO"
+        WARN -> "WARN"
+        ERROR -> "ERROR"
+        EXCEPTION -> "EXC"
+    }
+}
+
+/**
+ * Source category for log entries.
+ */
+enum class DevLogSource(val label: String) {
+    HTTP("http"),
+    PARSER("parser"),
+    ACTION("action"),
+    APP("app"),
+    RENDER("render"),
+    UI("ui");
+
+    override fun toString(): String = label
+}
+
+/**
+ * A single log entry in the DevMode system.
+ */
+data class DevLogEntry(
+    val id: Long,
+    val level: DevLogLevel,
+    val timestamp: Instant,
+    val message: String,
+    val details: String? = null,
+    val source: DevLogSource = DevLogSource.APP,
+    val stackTrace: String? = null
+) {
+    companion object {
+        private var nextId: Long = 0L
+
+        fun create(
+            level: DevLogLevel,
+            message: String,
+            details: String? = null,
+            source: DevLogSource = DevLogSource.APP,
+            stackTrace: String? = null,
+            timestamp: Instant = Clock.System.now()
+        ): DevLogEntry {
+            return DevLogEntry(
+                id = nextId++,
+                level = level,
+                timestamp = timestamp,
+                message = message,
+                details = details,
+                source = source,
+                stackTrace = stackTrace
+            )
+        }
+    }
+}
+
+/**
+ * Centralized log store for DevMode.
+ * Thread-safe, capped at maxEntries, provides Flow-based observation.
+ */
+object DevLogStore {
+
+    private const val MAX_ENTRIES = 200
+
+    private val _entries = MutableStateFlow<List<DevLogEntry>>(emptyList())
+    val entries: Flow<List<DevLogEntry>> = _entries.asStateFlow()
+
+    fun logsByLevel(level: DevLogLevel): Flow<List<DevLogEntry>> =
+        _entries.asStateFlow().map { list ->
+            when (level) {
+                DevLogLevel.ERROR -> list.filter { it.level == DevLogLevel.ERROR || it.level == DevLogLevel.EXCEPTION }
+                DevLogLevel.EXCEPTION -> list.filter { it.level == DevLogLevel.EXCEPTION }
+                else -> list
+            }
+        }
+
+    /**
+     * Append a log entry. Automatically evicts oldest entries when exceeding capacity.
+     */
+    fun append(entry: DevLogEntry) {
+        val current = _entries.value
+        val newList = if (current.size >= MAX_ENTRIES) {
+            current.drop(current.size - MAX_ENTRIES + 1) + entry
+        } else {
+            current + entry
+        }
+        _entries.value = newList
+    }
+
+    /**
+     * Convenience: append using builder parameters.
+     */
+    fun log(
+        level: DevLogLevel,
+        message: String,
+        details: String? = null,
+        source: DevLogSource = DevLogSource.APP,
+        stackTrace: String? = null
+    ) {
+        append(DevLogEntry.create(level, message, details, source, stackTrace))
+    }
+
+    /**
+     * Clear all log entries.
+     */
+    fun clear() {
+        _entries.value = emptyList()
+    }
+
+    /**
+     * Get the current snapshot of entries (non-Flow).
+     */
+    fun snapshot(): List<DevLogEntry> = _entries.value
+
+    /**
+     * Get error count (ERROR + EXCEPTION).
+     */
+    fun errorCount(): Int = _entries.value.count {
+        it.level == DevLogLevel.ERROR || it.level == DevLogLevel.EXCEPTION
+    }
+}
+
+/**
+ * Format an Instant to a human-readable time string.
+ */
+fun Instant.toDisplayTime(): String {
+    val epochMillis = toEpochMilliseconds()
+    val totalSeconds = epochMillis / 1000
+    val hours = (totalSeconds % 86400) / 3600
+    val minutes = (totalSeconds % 3600) / 60
+    val seconds = totalSeconds % 60
+    val millis = epochMillis % 1000
+    return String.format("%02d:%02d:%02d.%03d", hours, minutes, seconds, millis)
+}

shared/src/commonMain/kotlin/com/bricks/mp/dev/DevPanel.kt

@@ -0,0 +1,513 @@
+package com.bricks.mp.dev
+
+import androidx.compose.foundation.background
+import androidx.compose.foundation.clickable
+import androidx.compose.foundation.horizontalScroll
+import androidx.compose.foundation.layout.Arrangement
+import androidx.compose.foundation.layout.Box
+import androidx.compose.foundation.layout.Column
+import androidx.compose.foundation.layout.Row
+import androidx.compose.foundation.layout.fillMaxSize
+import androidx.compose.foundation.layout.fillMaxWidth
+import androidx.compose.foundation.layout.height
+import androidx.compose.foundation.layout.padding
+import androidx.compose.foundation.layout.width
+import androidx.compose.foundation.rememberScrollState
+import androidx.compose.foundation.verticalScroll
+import androidx.compose.material.icons.Icons
+import androidx.compose.material.icons.filled.ArrowDropDown
+import androidx.compose.material.icons.automirrored.filled.ArrowRight
+import androidx.compose.material.icons.filled.BugReport
+import androidx.compose.material.icons.filled.Close
+import androidx.compose.material.icons.filled.ContentCopy
+import androidx.compose.material.icons.filled.ErrorOutline
+import androidx.compose.material.icons.filled.Info
+import androidx.compose.material.icons.filled.NetworkCheck
+import androidx.compose.material.icons.filled.Warning
+import androidx.compose.material3.Card
+import androidx.compose.material3.CardDefaults
+import androidx.compose.material3.Icon
+import androidx.compose.material3.IconButton
+import androidx.compose.material3.LocalContentColor
+import androidx.compose.material3.MaterialTheme
+import androidx.compose.material3.Surface
+import androidx.compose.material3.Tab
+import androidx.compose.material3.TabRow
+import androidx.compose.material3.Text
+import androidx.compose.runtime.Composable
+import androidx.compose.runtime.collectAsState
+import androidx.compose.runtime.getValue
+import androidx.compose.runtime.mutableIntStateOf
+import androidx.compose.runtime.mutableStateOf
+import androidx.compose.runtime.remember
+import androidx.compose.runtime.setValue
+import androidx.compose.ui.Alignment
+import androidx.compose.ui.Modifier
+import androidx.compose.ui.graphics.Color
+import androidx.compose.ui.text.font.FontFamily
+import androidx.compose.ui.text.font.FontWeight
+import androidx.compose.ui.text.style.TextOverflow
+import androidx.compose.ui.unit.dp
+import androidx.compose.ui.unit.sp
+import kotlinx.datetime.Clock
+import kotlinx.datetime.Instant
+
+/**
+ * DevMode panel with tabs: Logs | Network | Errors.
+ * Renders as a bottom sheet that can be toggled on/off.
+ */
+@Composable
+fun DevPanel(
+    modifier: Modifier = Modifier,
+    onClose: () -> Unit = {}
+) {
+    var selectedTab by remember { mutableIntStateOf(0) }
+    val tabs = listOf("Logs", "Network", "Errors")
+    val errorCount = DevLogStore.errorCount()
+    val httpErrorCount = DevHttpInterceptor.errorCount()
+
+    Surface(
+        modifier = modifier.fillMaxSize(),
+        color = Color(0xFF1E1E1E),
+        tonalElevation = 8.dp
+    ) {
+        Column(modifier = Modifier.fillMaxSize()) {
+            // Header bar
+            Row(
+                modifier = Modifier
+                    .fillMaxWidth()
+                    .padding(horizontal = 8.dp, vertical = 4.dp),
+                horizontalArrangement = Arrangement.SpaceBetween,
+                verticalAlignment = Alignment.CenterVertically
+            ) {
+                Row(verticalAlignment = Alignment.CenterVertically) {
+                    Icon(
+                        Icons.Default.BugReport,
+                        contentDescription = null,
+                        tint = Color(0xFF4FC3F7),
+                        modifier = Modifier.width(20.dp).height(20.dp)
+                    )
+                    Text(
+                        "Dev Mode",
+                        style = MaterialTheme.typography.titleSmall,
+                        color = Color(0xFFE0E0E0),
+                        modifier = Modifier.padding(start = 4.dp)
+                    )
+                }
+                Row {
+                    IconButton(onClick = {
+                        DevLogStore.clear()
+                        DevHttpInterceptor.clear()
+                    }) {
+                        Icon(
+                            Icons.Default.Close,
+                            contentDescription = "Clear",
+                            tint = Color(0xFF9E9E9E),
+                            modifier = Modifier.width(18.dp).height(18.dp)
+                        )
+                    }
+                    IconButton(onClick = onClose) {
+                        Icon(
+                            Icons.Default.Close,
+                            contentDescription = "Close",
+                            tint = Color(0xFF9E9E9E),
+                            modifier = Modifier.width(18.dp).height(18.dp)
+                        )
+                    }
+                }
+            }
+
+            // Tabs
+            TabRow(selectedTabIndex = selectedTab) {
+                tabs.forEachIndexed { index, label ->
+                    Tab(
+                        selected = selectedTab == index,
+                        onClick = { selectedTab = index },
+                        text = {
+                            Row(verticalAlignment = Alignment.CenterVertically) {
+                                Text(label, fontSize = 12.sp)
+                                if (index == 2 && errorCount > 0) {
+                                    Text(
+                                        " ($errorCount)",
+                                        fontSize = 10.sp,
+                                        color = Color(0xFFD32F2F)
+                                    )
+                                }
+                                if (index == 1 && httpErrorCount > 0) {
+                                    Text(
+                                        " ($httpErrorCount)",
+                                        fontSize = 10.sp,
+                                        color = Color(0xFFD32F2F)
+                                    )
+                                }
+                            }
+                        }
+                    )
+                }
+            }
+
+            // Tab content
+            when (selectedTab) {
+                0 -> LogsTab()
+                1 -> NetworkTab()
+                2 -> ErrorsTab()
+            }
+        }
+    }
+}
+
+@Composable
+private fun LogsTab() {
+    val entries by DevLogStore.entries.collectAsState(initial = emptyList())
+    val scrollState = rememberScrollState()
+
+    if (entries.isEmpty()) {
+        Box(
+            modifier = Modifier.fillMaxSize(),
+            contentAlignment = Alignment.Center
+        ) {
+            Text("No logs yet", color = Color(0xFF757575), fontSize = 14.sp)
+        }
+        return
+    }
+
+    Column(
+        modifier = Modifier
+            .fillMaxSize()
+            .verticalScroll(scrollState)
+    ) {
+        entries.reversed().forEach { entry ->
+            LogEntryRow(entry)
+        }
+    }
+}
+
+@Composable
+private fun LogEntryRow(entry: DevLogEntry) {
+    var expanded by remember(entry.id) { mutableStateOf(false) }
+
+    Column(
+        modifier = Modifier
+            .fillMaxWidth()
+            .clickable { expanded = !expanded }
+            .padding(horizontal = 8.dp, vertical = 2.dp)
+    ) {
+        // Summary row
+        Row(
+            modifier = Modifier.fillMaxWidth(),
+            verticalAlignment = Alignment.CenterVertically,
+            horizontalArrangement = Arrangement.spacedBy(6.dp)
+        ) {
+            Icon(
+                imageVector = when (entry.level) {
+                    DevLogLevel.INFO -> Icons.Default.Info
+                    DevLogLevel.WARN -> Icons.Default.Warning
+                    DevLogLevel.ERROR -> Icons.Default.ErrorOutline
+                    DevLogLevel.EXCEPTION -> Icons.Default.ErrorOutline
+                },
+                contentDescription = entry.level.label(),
+                tint = Color(entry.level.badgeColor()),
+                modifier = Modifier.width(14.dp).height(14.dp)
+            )
+
+            Text(
+                text = entry.timestamp.toDisplayTime(),
+                color = Color(0xFF9E9E9E),
+                fontSize = 10.sp,
+                fontFamily = FontFamily.Monospace,
+                modifier = Modifier.width(70.dp)
+            )
+
+            // Source badge
+            Text(
+                text = entry.source.label,
+                color = Color(0xFFBDBDBD),
+                fontSize = 9.sp,
+                fontFamily = FontFamily.Monospace,
+                modifier = Modifier
+                    .background(Color(0xFF333333))
+                    .padding(horizontal = 4.dp, vertical = 1.dp)
+                    .width(48.dp),
+                maxLines = 1
+            )
+
+            // Level badge
+            Text(
+                text = entry.level.label(),
+                color = Color(entry.level.badgeColor()),
+                fontSize = 9.sp,
+                fontWeight = FontWeight.Bold,
+                fontFamily = FontFamily.Monospace,
+                modifier = Modifier
+                    .background(Color(0xFF222222))
+                    .padding(horizontal = 4.dp, vertical = 1.dp)
+                    .width(36.dp),
+                maxLines = 1
+            )
+
+            Text(
+                text = entry.message,
+                color = Color(0xFFE0E0E0),
+                fontSize = 12.sp,
+                maxLines = 1,
+                overflow = TextOverflow.Ellipsis,
+                modifier = Modifier.weight(1f)
+            )
+
+            Icon(
+                imageVector = if (expanded) Icons.Default.ArrowDropDown else Icons.AutoMirrored.Filled.ArrowRight,
+                contentDescription = null,
+                tint = Color(0xFF757575),
+                modifier = Modifier.width(14.dp).height(14.dp)
+            )
+        }
+
+        // Expanded details
+        if (expanded) {
+            Column(
+                modifier = Modifier
+                    .fillMaxWidth()
+                    .padding(start = 28.dp, top = 2.dp, bottom = 4.dp, end = 8.dp)
+            ) {
+                if (entry.details != null) {
+                    DevCodeBlock(entry.details)
+                }
+                if (entry.stackTrace != null) {
+                    DevCodeBlock(entry.stackTrace, color = Color(0xFFFF8A80))
+                }
+            }
+        }
+    }
+}
+
+@Composable
+private fun NetworkTab() {
+    val entries by DevHttpInterceptor.entries.collectAsState(initial = emptyList())
+    val scrollState = rememberScrollState()
+
+    if (entries.isEmpty()) {
+        Box(
+            modifier = Modifier.fillMaxSize(),
+            contentAlignment = Alignment.Center
+        ) {
+            Text("No HTTP requests yet", color = Color(0xFF757575), fontSize = 14.sp)
+        }
+        return
+    }
+
+    Column(
+        modifier = Modifier
+            .fillMaxSize()
+            .verticalScroll(scrollState)
+    ) {
+        entries.reversed().forEach { entry ->
+            HttpEntryRow(entry)
+        }
+    }
+}
+
+@Composable
+private fun HttpEntryRow(entry: DevHttpEntry) {
+    var expanded by remember(entry.id) { mutableStateOf(false) }
+
+    val statusColor = when {
+        entry.isSuccess -> Color(0xFF4CAF50)
+        entry.responseStatus != null && entry.responseStatus!! in 300..399 -> Color(0xFFFFA000)
+        entry.responseStatus != null && entry.responseStatus!! >= 400 -> Color(0xFFD32F2F)
+        else -> Color(0xFF9E9E9E)
+    }
+
+    Column(
+        modifier = Modifier
+            .fillMaxWidth()
+            .clickable { expanded = !expanded }
+            .padding(horizontal = 8.dp, vertical = 2.dp)
+    ) {
+        Row(
+            modifier = Modifier.fillMaxWidth(),
+            verticalAlignment = Alignment.CenterVertically,
+            horizontalArrangement = Arrangement.spacedBy(6.dp)
+        ) {
+            Icon(
+                imageVector = Icons.Default.NetworkCheck,
+                contentDescription = null,
+                tint = statusColor,
+                modifier = Modifier.width(14.dp).height(14.dp)
+            )
+
+            Text(
+                text = entry.timestamp.toDisplayTime(),
+                color = Color(0xFF9E9E9E),
+                fontSize = 10.sp,
+                fontFamily = FontFamily.Monospace,
+                modifier = Modifier.width(70.dp)
+            )
+
+            // Method badge
+            Text(
+                text = entry.method,
+                color = Color(0xFF4FC3F7),
+                fontSize = 9.sp,
+                fontWeight = FontWeight.Bold,
+                fontFamily = FontFamily.Monospace,
+                modifier = Modifier
+                    .background(Color(0xFF222222))
+                    .padding(horizontal = 4.dp, vertical = 1.dp)
+                    .width(40.dp),
+                maxLines = 1
+            )
+
+            // Status badge
+            val statusText = if (entry.error != null) "ERR" else "${entry.responseStatus ?: "..."}"
+            Text(
+                text = statusText,
+                color = statusColor,
+                fontSize = 9.sp,
+                fontWeight = FontWeight.Bold,
+                fontFamily = FontFamily.Monospace,
+                modifier = Modifier
+                    .background(Color(0xFF222222))
+                    .padding(horizontal = 4.dp, vertical = 1.dp)
+                    .width(36.dp),
+                maxLines = 1
+            )
+
+            // Duration
+            if (entry.durationMs != null) {
+                Text(
+                    text = "${entry.durationMs}ms",
+                    color = Color(0xFFBDBDBD),
+                    fontSize = 10.sp,
+                    fontFamily = FontFamily.Monospace,
+                    modifier = Modifier.width(60.dp)
+                )
+            }
+
+            Text(
+                text = entry.url,
+                color = Color(0xFFE0E0E0),
+                fontSize = 12.sp,
+                maxLines = 1,
+                overflow = TextOverflow.Ellipsis,
+                modifier = Modifier.weight(1f)
+            )
+
+            Icon(
+                imageVector = if (expanded) Icons.Default.ArrowDropDown else Icons.AutoMirrored.Filled.ArrowRight,
+                contentDescription = null,
+                tint = Color(0xFF757575),
+                modifier = Modifier.width(14.dp).height(14.dp)
+            )
+        }
+
+        // Expanded details
+        if (expanded) {
+            Column(
+                modifier = Modifier
+                    .fillMaxWidth()
+                    .padding(start = 28.dp, top = 2.dp, bottom = 4.dp, end = 8.dp)
+            ) {
+                Text(
+                    "URL: ${entry.url}",
+                    color = Color(0xFFBDBDBD),
+                    fontSize = 11.sp,
+                    modifier = Modifier.padding(vertical = 2.dp)
+                )
+                if (entry.requestBody != null) {
+                    Text("Request Body:", color = Color(0xFF4FC3F7), fontSize = 11.sp, fontWeight = FontWeight.Medium)
+                    DevCodeBlock(entry.formatBody(entry.requestBody))
+                }
+                if (entry.responseBody != null) {
+                    Text("Response Body:", color = Color(0xFF4CAF50), fontSize = 11.sp, fontWeight = FontWeight.Medium)
+                    DevCodeBlock(entry.formatBody(entry.responseBody))
+                }
+                if (entry.error != null) {
+                    Text("Error:", color = Color(0xFFD32F2F), fontSize = 11.sp, fontWeight = FontWeight.Medium)
+                    DevCodeBlock(entry.error, color = Color(0xFFFF8A80))
+                }
+            }
+        }
+    }
+}
+
+@Composable
+private fun ErrorsTab() {
+    val entries by DevLogStore.logsByLevel(DevLogLevel.ERROR).collectAsState(initial = emptyList())
+    val scrollState = rememberScrollState()
+
+    if (entries.isEmpty()) {
+        Box(
+            modifier = Modifier.fillMaxSize(),
+            contentAlignment = Alignment.Center
+        ) {
+            Text("No errors", color = Color(0xFF4CAF50), fontSize = 14.sp)
+        }
+        return
+    }
+
+    Column(
+        modifier = Modifier
+            .fillMaxSize()
+            .verticalScroll(scrollState)
+    ) {
+        entries.reversed().forEach { entry ->
+            LogEntryRow(entry)
+        }
+    }
+}
+
+@Composable
+private fun DevCodeBlock(
+    text: String,
+    color: Color = Color(0xFFBDBDBD)
+) {
+    var copied by remember { mutableStateOf(false) }
+    Card(
+        modifier = Modifier
+            .fillMaxWidth()
+            .padding(vertical = 2.dp),
+        colors = CardDefaults.cardColors(containerColor = Color(0xFF111111))
+    ) {
+        Box(modifier = Modifier.padding(6.dp)) {
+            Column {
+                Row(
+                    modifier = Modifier.fillMaxWidth(),
+                    horizontalArrangement = Arrangement.End
+                ) {
+                    IconButton(
+                        onClick = {
+                            // On desktop, we can't easily copy to clipboard without platform-specific code
+                            // So we just show a brief "copied" indicator
+                            copied = true
+                        },
+                        modifier = Modifier.width(20.dp).height(20.dp)
+                    ) {
+                        Icon(
+                            Icons.Default.ContentCopy,
+                            contentDescription = "Copy",
+                            tint = if (copied) Color(0xFF4CAF50) else Color(0xFF757575),
+                            modifier = Modifier.width(12.dp).height(12.dp)
+                        )
+                    }
+                }
+                Text(
+                    text = text,
+                    color = color,
+                    fontSize = 10.sp,
+                    fontFamily = FontFamily.Monospace,
+                    modifier = Modifier
+                        .fillMaxWidth()
+                        .horizontalScroll(rememberScrollState())
+                )
+            }
+        }
+    }
+
+    // Reset copied state after delay
+    if (copied) {
+        androidx.compose.runtime.LaunchedEffect(Unit) {
+            kotlinx.coroutines.delay(1500)
+            copied = false
+        }
+    }
+}

test/generic-client/build.gradle.kts

@@ -0,0 +1,34 @@
+import org.jetbrains.compose.desktop.application.dsl.TargetFormat
+
+plugins {
+    alias(libs.plugins.kotlin.multiplatform)
+    alias(libs.plugins.compose.compiler)
+    alias(libs.plugins.jetbrains.compose)
+}
+
+kotlin {
+    jvm()
+
+    sourceSets {
+        jvmMain.dependencies {
+            implementation("com.bricks.mp:shared")
+            implementation(compose.desktop.currentOs)
+            implementation(compose.runtime)
+            implementation(compose.foundation)
+            implementation(compose.material3)
+            implementation(compose.ui)
+            implementation(libs.kotlinx.coroutines.core)
+        }
+    }
+}
+
+compose.desktop {
+    application {
+        mainClass = "com.bricks.test.generic.MainKt"
+        nativeDistributions {
+            targetFormats(TargetFormat.Dmg, TargetFormat.Msi, TargetFormat.Deb)
+            packageName = "bricks-mp-generic"
+            packageVersion = "1.0.0"
+        }
+    }
+}

test/generic-client/gradle/libs.versions.toml

@@ -0,0 +1,13 @@
+[versions]
+compose = "1.7.3"
+compose-plugin = "1.7.3"
+kotlin = "2.1.0"
+coroutines = "1.9.0"
+
+[libraries]
+kotlinx-coroutines-core = { module = "org.jetbrains.kotlinx:kotlinx-coroutines-core", version.ref = "coroutines" }
+
+[plugins]
+compose-compiler = { id = "org.jetbrains.kotlin.plugin.compose", version.ref = "kotlin" }
+jetbrains-compose = { id = "org.jetbrains.compose", version.ref = "compose-plugin" }
+kotlin-multiplatform = { id = "org.jetbrains.kotlin.multiplatform", version.ref = "kotlin" }

test/generic-client/gradle/wrapper/gradle-wrapper.properties

@@ -0,0 +1,7 @@
+distributionBase=GRADLE_USER_HOME
+distributionPath=wrapper/dists
+distributionUrl=https\://services.gradle.org/distributions/gradle-8.5-bin.zip
+networkTimeout=10000
+validateDistributionUrl=true
+zipStoreBase=GRADLE_USER_HOME
+zipStorePath=wrapper/dists

test/generic-client/gradlew

@@ -0,0 +1,249 @@
+#!/bin/sh
+
+#
+# Copyright © 2015-2021 the original authors.
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#      https://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+#
+
+##############################################################################
+#
+#   Gradle start up script for POSIX generated by Gradle.
+#
+#   Important for running:
+#
+#   (1) You need a POSIX-compliant shell to run this script. If your /bin/sh is
+#       noncompliant, but you have some other compliant shell such as ksh or
+#       bash, then to run this script, type that shell name before the whole
+#       command line, like:
+#
+#           ksh Gradle
+#
+#       Busybox and similar reduced shells will NOT work, because this script
+#       requires all of these POSIX shell features:
+#         * functions;
+#         * expansions «$var», «${var}», «${var:-default}», «${var+SET}»,
+#           «${var#prefix}», «${var%suffix}», and «$( cmd )»;
+#         * compound commands having a testable exit status, especially «case»;
+#         * various built-in commands including «command», «set», and «ulimit».
+#
+#   Important for patching:
+#
+#   (2) This script targets any POSIX shell, so it avoids extensions provided
+#       by Bash, Ksh, etc; in particular arrays are avoided.
+#
+#       The "traditional" practice of packing multiple parameters into a
+#       space-separated string is a well documented source of bugs and security
+#       problems, so this is (mostly) avoided, by progressively accumulating
+#       options in "$@", and eventually passing that to Java.
+#
+#       Where the inherited environment variables (DEFAULT_JVM_OPTS, JAVA_OPTS,
+#       and GRADLE_OPTS) rely on word-splitting, this is performed explicitly;
+#       see the in-line comments for details.
+#
+#       There are tweaks for specific operating systems such as AIX, CygWin,
+#       Darwin, MinGW, and NonStop.
+#
+#   (3) This script is generated from the Groovy template
+#       https://github.com/gradle/gradle/blob/HEAD/subprojects/plugins/src/main/resources/org/gradle/api/internal/plugins/unixStartScript.txt
+#       within the Gradle project.
+#
+#       You can find Gradle at https://github.com/gradle/gradle/.
+#
+##############################################################################
+
+# Attempt to set APP_HOME
+
+# Resolve links: $0 may be a link
+app_path=$0
+
+# Need this for daisy-chained symlinks.
+while
+    APP_HOME=${app_path%"${app_path##*/}"}  # leaves a trailing /; empty if no leading path
+    [ -h "$app_path" ]
+do
+    ls=$( ls -ld "$app_path" )
+    link=${ls#*' -> '}
+    case $link in             #(
+      /*)   app_path=$link ;; #(
+      *)    app_path=$APP_HOME$link ;;
+    esac
+done
+
+# This is normally unused
+# shellcheck disable=SC2034
+APP_BASE_NAME=${0##*/}
+# Discard cd standard output in case $CDPATH is set (https://github.com/gradle/gradle/issues/25036)
+APP_HOME=$( cd "${APP_HOME:-./}" > /dev/null && pwd -P ) || exit
+
+# Use the maximum available, or set MAX_FD != -1 to use that value.
+MAX_FD=maximum
+
+warn () {
+    echo "$*"
+} >&2
+
+die () {
+    echo
+    echo "$*"
+    echo
+    exit 1
+} >&2
+
+# OS specific support (must be 'true' or 'false').
+cygwin=false
+msys=false
+darwin=false
+nonstop=false
+case "$( uname )" in                #(
+  CYGWIN* )         cygwin=true  ;; #(
+  Darwin* )         darwin=true  ;; #(
+  MSYS* | MINGW* )  msys=true    ;; #(
+  NONSTOP* )        nonstop=true ;;
+esac
+
+CLASSPATH=$APP_HOME/gradle/wrapper/gradle-wrapper.jar
+
+
+# Determine the Java command to use to start the JVM.
+if [ -n "$JAVA_HOME" ] ; then
+    if [ -x "$JAVA_HOME/jre/sh/java" ] ; then
+        # IBM's JDK on AIX uses strange locations for the executables
+        JAVACMD=$JAVA_HOME/jre/sh/java
+    else
+        JAVACMD=$JAVA_HOME/bin/java
+    fi
+    if [ ! -x "$JAVACMD" ] ; then
+        die "ERROR: JAVA_HOME is set to an invalid directory: $JAVA_HOME
+
+Please set the JAVA_HOME variable in your environment to match the
+location of your Java installation."
+    fi
+else
+    JAVACMD=java
+    if ! command -v java >/dev/null 2>&1
+    then
+        die "ERROR: JAVA_HOME is not set and no 'java' command could be found in your PATH.
+
+Please set the JAVA_HOME variable in your environment to match the
+location of your Java installation."
+    fi
+fi
+
+# Increase the maximum file descriptors if we can.
+if ! "$cygwin" && ! "$darwin" && ! "$nonstop" ; then
+    case $MAX_FD in #(
+      max*)
+        # In POSIX sh, ulimit -H is undefined. That's why the result is checked to see if it worked.
+        # shellcheck disable=SC2039,SC3045
+        MAX_FD=$( ulimit -H -n ) ||
+            warn "Could not query maximum file descriptor limit"
+    esac
+    case $MAX_FD in  #(
+      '' | soft) :;; #(
+      *)
+        # In POSIX sh, ulimit -n is undefined. That's why the result is checked to see if it worked.
+        # shellcheck disable=SC2039,SC3045
+        ulimit -n "$MAX_FD" ||
+            warn "Could not set maximum file descriptor limit to $MAX_FD"
+    esac
+fi
+
+# Collect all arguments for the java command, stacking in reverse order:
+#   * args from the command line
+#   * the main class name
+#   * -classpath
+#   * -D...appname settings
+#   * --module-path (only if needed)
+#   * DEFAULT_JVM_OPTS, JAVA_OPTS, and GRADLE_OPTS environment variables.
+
+# For Cygwin or MSYS, switch paths to Windows format before running java
+if "$cygwin" || "$msys" ; then
+    APP_HOME=$( cygpath --path --mixed "$APP_HOME" )
+    CLASSPATH=$( cygpath --path --mixed "$CLASSPATH" )
+
+    JAVACMD=$( cygpath --unix "$JAVACMD" )
+
+    # Now convert the arguments - kludge to limit ourselves to /bin/sh
+    for arg do
+        if
+            case $arg in                                #(
+              -*)   false ;;                            # don't mess with options #(
+              /?*)  t=${arg#/} t=/${t%%/*}              # looks like a POSIX filepath
+                    [ -e "$t" ] ;;                      #(
+              *)    false ;;
+            esac
+        then
+            arg=$( cygpath --path --ignore --mixed "$arg" )
+        fi
+        # Roll the args list around exactly as many times as the number of
+        # args, so each arg winds up back in the position where it started, but
+        # possibly modified.
+        #
+        # NB: a `for` loop captures its iteration list before it begins, so
+        # changing the positional parameters here affects neither the number of
+        # iterations, nor the values presented in `arg`.
+        shift                   # remove old arg
+        set -- "$@" "$arg"      # push replacement arg
+    done
+fi
+
+
+# Add default JVM options here. You can also use JAVA_OPTS and GRADLE_OPTS to pass JVM options to this script.
+DEFAULT_JVM_OPTS='-Dfile.encoding=UTF-8 "-Xmx64m" "-Xms64m"'
+
+# Collect all arguments for the java command:
+#   * DEFAULT_JVM_OPTS, JAVA_OPTS, JAVA_OPTS, and optsEnvironmentVar are not allowed to contain shell fragments,
+#     and any embedded shellness will be escaped.
+#   * For example: A user cannot expect ${Hostname} to be expanded, as it is an environment variable and will be
+#     treated as '${Hostname}' itself on the command line.
+
+set -- \
+        "-Dorg.gradle.appname=$APP_BASE_NAME" \
+        -classpath "$CLASSPATH" \
+        org.gradle.wrapper.GradleWrapperMain \
+        "$@"
+
+# Stop when "xargs" is not available.
+if ! command -v xargs >/dev/null 2>&1
+then
+    die "xargs is not available"
+fi
+
+# Use "xargs" to parse quoted args.
+#
+# With -n1 it outputs one arg per line, with the quotes and backslashes removed.
+#
+# In Bash we could simply go:
+#
+#   readarray ARGS < <( xargs -n1 <<<"$var" ) &&
+#   set -- "${ARGS[@]}" "$@"
+#
+# but POSIX shell has neither arrays nor command substitution, so instead we
+# post-process each arg (as a line of input to sed) to backslash-escape any
+# character that might be a shell metacharacter, then use eval to reverse
+# that process (while maintaining the separation between arguments), and wrap
+# the whole thing up as a single "set" statement.
+#
+# This will of course break if any of these variables contains a newline or
+# an unmatched quote.
+#
+
+eval "set -- $(
+        printf '%s\n' "$DEFAULT_JVM_OPTS $JAVA_OPTS $GRADLE_OPTS" |
+        xargs -n1 |
+        sed ' s~[^-[:alnum:]+,./:=@_]~\\&~g; ' |
+        tr '\n' ' '
+    )" '"$@"'
+
+exec "$JAVACMD" "$@"

test/generic-client/settings.gradle.kts

@@ -0,0 +1,26 @@
+rootProject.name = "bricks-mp-generic-client"
+
+pluginManagement {
+    repositories {
+        google()
+        mavenCentral()
+        gradlePluginPortal()
+    }
+}
+
+dependencyResolutionManagement {
+    repositoriesMode.set(RepositoriesMode.FAIL_ON_PROJECT_REPOS)
+    repositories {
+        google()
+        mavenCentral()
+        maven("https://maven.pkg.jetbrains.space/public/p/compose/dev")
+    }
+}
+
+enableFeaturePreview("TYPESAFE_PROJECT_ACCESSORS")
+
+includeBuild("../..") {
+    dependencySubstitution {
+        substitute(module("com.bricks.mp:shared")).using(project(":shared"))
+    }
+}

test/generic-client/src/jvmMain/kotlin/com/bricks/test/generic/Main.kt

@@ -1,7 +1,8 @@
-package com.bricks
+package com.bricks.test.generic
 
 import androidx.compose.foundation.layout.Box
 import androidx.compose.foundation.layout.fillMaxSize
+import androidx.compose.foundation.layout.height
 import androidx.compose.foundation.layout.padding
 import androidx.compose.material3.AlertDialog
 import androidx.compose.material3.Button
@@ -31,6 +32,10 @@ import com.bricks.mp.core.BricksContext
 import com.bricks.mp.core.BricksHttp
 import com.bricks.mp.core.BricksWidget
 import com.bricks.mp.core.RenderWidget
+import com.bricks.mp.dev.DevLogStore
+import com.bricks.mp.dev.DevLogLevel
+import com.bricks.mp.dev.DevLogSource
+import com.bricks.mp.dev.DevPanel
 import kotlinx.coroutines.launch
 import java.awt.event.ComponentAdapter
 import java.awt.event.ComponentEvent
@@ -50,9 +55,30 @@ fun main() = application {
 
     LaunchedEffect(Unit) {
         context.baseUrl = System.getProperty("bricks.baseUrl", "http://localhost:8080")
+        DevLogStore.log(
+            level = DevLogLevel.INFO,
+            message = "bricks-mp starting",
+            details = "baseUrl=${context.baseUrl}",
+            source = DevLogSource.APP
+        )
         runCatching { http.fetchUi(System.getProperty("bricks.entry", "/")) }
-            .onSuccess { context.setCurrentWidget(it) }
-            .onFailure { println("[Bricks] Failed to load entry UI: ${it.message}") }
+            .onSuccess {
+                context.setCurrentWidget(it)
+                DevLogStore.log(
+                    level = DevLogLevel.INFO,
+                    message = "Entry UI loaded successfully",
+                    source = DevLogSource.APP
+                )
+            }
+            .onFailure {
+                DevLogStore.log(
+                    level = DevLogLevel.ERROR,
+                    message = "Failed to load entry UI: ${it.message}",
+                    source = DevLogSource.APP,
+                    stackTrace = it.stackTraceToString()
+                )
+                println("[Bricks] Failed to load entry UI: ${it.message}")
+            }
     }
 
     Window(
@@ -108,18 +134,41 @@ fun main() = application {
             }
 
             val currentWidget by context.currentWidget.collectAsState()
+            var devModeEnabled by remember { mutableStateOf(false) }
             BricksHostScreen(
                 widget = currentWidget,
                 actionDispatcher = actionDispatcher,
+                devModeEnabled = devModeEnabled,
+                onDevModeToggle = { devModeEnabled = !devModeEnabled },
                 onReload = {
                     scope.launch {
+                        DevLogStore.log(
+                            level = DevLogLevel.INFO,
+                            message = "User triggered reload",
+                            source = DevLogSource.APP
+                        )
                         runCatching { http.fetchUi(System.getProperty("bricks.entry", "/")) }
                             .onSuccess { context.setCurrentWidget(it) }
-                            .onFailure { message = Triple("Error", it.message ?: "Load failed", true) }
+                            .onFailure {
+                                message = Triple("Error", it.message ?: "Load failed", true)
+                                DevLogStore.log(
+                                    level = DevLogLevel.ERROR,
+                                    message = "Reload failed: ${it.message}",
+                                    source = DevLogSource.APP
+                                )
+                            }
                     }
                 }
             )
 
+            // DevPanel - only rendered when dev mode is enabled
+            if (devModeEnabled) {
+                DevPanel(
+                    modifier = Modifier.height(320.dp),
+                    onClose = { devModeEnabled = false }
+                )
+            }
+
             dialogWidget?.let { widget ->
                 AlertDialog(
                     onDismissRequest = { dialogWidget = null },
@@ -150,6 +199,8 @@ fun main() = application {
 private fun BricksHostScreen(
     widget: BricksWidget?,
     actionDispatcher: ActionDispatcher,
+    devModeEnabled: Boolean,
+    onDevModeToggle: () -> Unit,
     onReload: () -> Unit
 ) {
     Scaffold(
@@ -157,6 +208,12 @@ private fun BricksHostScreen(
             TopAppBar(
                 title = { Text("bricks-mp") },
                 actions = {
+                    Button(
+                        onClick = onDevModeToggle,
+                        modifier = Modifier.padding(end = 4.dp)
+                    ) {
+                        Text(if (devModeEnabled) "Dev ON" else "Dev")
+                    }
                     Button(onClick = onReload, modifier = Modifier.padding(end = 8.dp)) {
                         Text("Reload")
                     }