ci: exclude public/ from Biome and disable automerge for Biome updates

Biome 2.5.7 (auto-merged by Renovate in #904 with failing checks) started
parsing SVG files, breaking lint on generated assets in public/. Exclude
the whole public/ directory instead of just *.svg so future parser
changes can't hit generated files again.

Biome minor updates can also introduce new lint rules for source code,
so require manual review for its Renovate PRs instead of automerge.

app/api/chat/route.ts

@@ -493,9 +493,9 @@ IMPORTANT: The "Current diagram XML" is the SINGLE SOURCE OF TRUTH for what's on
     const result = streamText({
         model,
         abortSignal: req.signal,
-        // Must be sent: unset means the provider's own default, and Bedrock's is 4096 —
+        ...(process.env.MAX_OUTPUT_TOKENS && {
-        // enough for a small diagram, so larger ones were cut off mid-attribute.
+            maxOutputTokens: parseInt(process.env.MAX_OUTPUT_TOKENS, 10),
-        maxOutputTokens: Number(process.env.MAX_OUTPUT_TOKENS) || 16000,
+        }),
         stopWhen: stepCountIs(5),
         // Repair truncated tool calls when maxOutputTokens is reached mid-JSON
         experimental_repairToolCall: async ({ toolCall, error }) => {

components/chat-panel.tsx

@@ -830,6 +830,10 @@ export default function ChatPanel({
                 let chartXml = await onFetchChart()
                 chartXml = formatXML(chartXml)
 
+                // Update ref directly to avoid race condition with React's async state update
+                // This ensures edit_diagram has the correct XML before AI responds
+                chartXMLRef.current = chartXml
+
                 // Build user text by concatenating input with pre-extracted text
                 // (Backend only reads first text part, so we must combine them)
                 const parts: any[] = []

contexts/diagram-context.tsx

@@ -2,7 +2,7 @@
 
 import type React from "react"
 import { createContext, useContext, useEffect, useRef, useState } from "react"
-import type { DrawIoEmbedRef, EventExport } from "react-drawio"
+import type { DrawIoEmbedRef } from "react-drawio"
 import { toast } from "sonner"
 import type { ExportFormat } from "@/components/save-dialog"
 import { getApiEndpoint } from "@/lib/base-path"
@@ -22,7 +22,7 @@ interface DiagramContextType {
     handleExportWithoutHistory: () => void
     resolverRef: React.MutableRefObject<((value: string) => void) | null>
     drawioRef: React.MutableRefObject<DrawIoEmbedRef | null>
-    handleDiagramExport: (data: EventExport) => void
+    handleDiagramExport: (data: any) => void
     handleDiagramAutoSave: (data: { xml?: string }) => void
     clearDiagram: () => void
     saveDiagramToFile: (
@@ -83,7 +83,7 @@ export function DiagramProvider({ children }: { children: React.ReactNode }) {
 
     // Track if we're expecting an export for file save (stores raw export data)
     const saveResolverRef = useRef<{
-        resolver: ((data: string, fullDiagramXML?: string) => void) | null
+        resolver: ((data: string) => void) | null
         format: ExportFormat | null
     }>({ resolver: null, format: null })
 
@@ -204,7 +204,7 @@ export function DiagramProvider({ children }: { children: React.ReactNode }) {
         return null
     }
 
-    const handleDiagramExport = (data: EventExport) => {
+    const handleDiagramExport = (data: any) => {
         // Handle PNG export for VLM validation
         if (pngResolverRef.current && data.data?.startsWith("data:image/png")) {
             pngResolverRef.current(data.data)
@@ -215,7 +215,7 @@ export function DiagramProvider({ children }: { children: React.ReactNode }) {
         // Handle save to file if requested (process raw data before extraction)
         if (saveResolverRef.current.resolver) {
             const format = saveResolverRef.current.format
-            saveResolverRef.current.resolver(data.data, data.xml)
+            saveResolverRef.current.resolver(data.data)
             saveResolverRef.current = { resolver: null, format: null }
             // For non-xmlsvg formats, skip XML extraction as it will fail
             // Only drawio (which uses xmlsvg internally) has the content attribute
@@ -225,11 +225,8 @@ export function DiagramProvider({ children }: { children: React.ReactNode }) {
             }
         }
 
-        // Don't write chartXML here: exports don't change the diagram, and
-        // data.xml from xmlsvg exports has compressed <diagram> payloads that
-        // would break edit_diagram/display_diagram. Autosave keeps chartXML
-        // up to date with the full uncompressed multi-page document (#879).
         const extractedXML = extractDiagramXML(data.data)
+        setChartXML(extractedXML)
         setLatestSvg(data.data)
 
         // Only add to history if this was a user-initiated export
@@ -291,16 +288,14 @@ export function DiagramProvider({ children }: { children: React.ReactNode }) {
 
         // Set up the resolver before triggering export
         saveResolverRef.current = {
-            resolver: (exportData: string, fullDiagramXML?: string) => {
+            resolver: (exportData: string) => {
                 let fileContent: string | Blob
                 let mimeType: string
                 let extension: string
 
                 if (format === "drawio") {
-                    // Prefer the complete document from the export event so all pages are saved.
+                    // Extract XML from SVG for .drawio format
-                    const xml = fullDiagramXML?.trim()
+                    const xml = extractDiagramXML(exportData)
-                        ? fullDiagramXML
-                        : extractDiagramXML(exportData)
                     let xmlContent = xml
                     if (!xml.includes("<mxfile")) {
                         xmlContent = `<mxfile><diagram name="Page-1" id="page-1">${xml}</diagram></mxfile>`

env.example

@@ -11,9 +11,6 @@ AI_PROVIDER=bedrock
 # Example: AI_MODEL=doubao-seed-1-8-251215,doubao-seed-1-6-flash,doubao-seed-1-6-pro
 AI_MODEL=global.anthropic.claude-sonnet-4-5-20250929-v1:0
 
-# Output limit, all providers (default: 16000). Raise it if large diagrams arrive cut off.
-# MAX_OUTPUT_TOKENS=16000
-
 # AWS Bedrock Configuration
 # AWS_REGION=us-east-1
 # AWS_ACCESS_KEY_ID=your-access-key-id