feat: fix tooltip shortcuts and add dev server config dialog

Tooltip fixes (PR #177 follow-up):
- Remove duplicate title attr on Settings button that caused double-tooltip
- Restore keyboard shortcut hints in tooltip text: Settings (,), Reset (R)
- Clean up spurious peer markers in package-lock.json

Dev server config dialog:
- Add DevServerConfigDialog component for custom dev commands
- Open config dialog automatically when start fails with "no dev command"
- Add useDevServerConfig/useUpdateDevServerConfig hooks
- Add updateDevServerConfig API function
- Add config gear button next to dev server start

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

ui/src/components/DevServerConfigDialog.tsx

@@ -0,0 +1,182 @@
+import { useState, useEffect } from 'react'
+import { Loader2, RotateCcw, Terminal } from 'lucide-react'
+import { useQueryClient } from '@tanstack/react-query'
+import {
+  Dialog,
+  DialogContent,
+  DialogDescription,
+  DialogFooter,
+  DialogHeader,
+  DialogTitle,
+} from '@/components/ui/dialog'
+import { Button } from '@/components/ui/button'
+import { Input } from '@/components/ui/input'
+import { Label } from '@/components/ui/label'
+import { useDevServerConfig, useUpdateDevServerConfig } from '@/hooks/useProjects'
+import { startDevServer } from '@/lib/api'
+
+interface DevServerConfigDialogProps {
+  projectName: string
+  isOpen: boolean
+  onClose: () => void
+  autoStartOnSave?: boolean
+}
+
+export function DevServerConfigDialog({
+  projectName,
+  isOpen,
+  onClose,
+  autoStartOnSave = false,
+}: DevServerConfigDialogProps) {
+  const { data: config } = useDevServerConfig(isOpen ? projectName : null)
+  const updateConfig = useUpdateDevServerConfig(projectName)
+  const queryClient = useQueryClient()
+
+  const [command, setCommand] = useState('')
+  const [error, setError] = useState<string | null>(null)
+  const [isSaving, setIsSaving] = useState(false)
+
+  // Sync input with config when dialog opens or config loads
+  useEffect(() => {
+    if (isOpen && config) {
+      setCommand(config.custom_command ?? config.effective_command ?? '')
+      setError(null)
+    }
+  }, [isOpen, config])
+
+  const hasCustomCommand = !!config?.custom_command
+
+  const handleSaveAndStart = async () => {
+    const trimmed = command.trim()
+    if (!trimmed) {
+      setError('Please enter a dev server command.')
+      return
+    }
+
+    setIsSaving(true)
+    setError(null)
+
+    try {
+      await updateConfig.mutateAsync(trimmed)
+
+      if (autoStartOnSave) {
+        await startDevServer(projectName)
+        queryClient.invalidateQueries({ queryKey: ['dev-server-status', projectName] })
+      }
+
+      onClose()
+    } catch (err) {
+      setError(err instanceof Error ? err.message : 'Failed to save configuration')
+    } finally {
+      setIsSaving(false)
+    }
+  }
+
+  const handleClear = async () => {
+    setIsSaving(true)
+    setError(null)
+
+    try {
+      await updateConfig.mutateAsync(null)
+      setCommand(config?.detected_command ?? '')
+    } catch (err) {
+      setError(err instanceof Error ? err.message : 'Failed to clear configuration')
+    } finally {
+      setIsSaving(false)
+    }
+  }
+
+  return (
+    <Dialog open={isOpen} onOpenChange={(open) => !open && onClose()}>
+      <DialogContent className="sm:max-w-lg">
+        <DialogHeader>
+          <div className="flex items-center gap-3">
+            <div className="p-2 rounded-lg bg-primary/10 text-primary">
+              <Terminal size={20} />
+            </div>
+            <DialogTitle>Dev Server Configuration</DialogTitle>
+          </div>
+        </DialogHeader>
+
+        <DialogDescription asChild>
+          <div className="space-y-4">
+            {/* Detection info */}
+            <div className="rounded-lg border-2 border-border bg-muted/50 p-3 text-sm">
+              {config?.detected_type ? (
+                <p>
+                  Detected project type: <strong className="text-foreground">{config.detected_type}</strong>
+                  {config.detected_command && (
+                    <span className="text-muted-foreground"> — {config.detected_command}</span>
+                  )}
+                </p>
+              ) : (
+                <p className="text-muted-foreground">
+                  No project type detected. Enter a custom command below.
+                </p>
+              )}
+            </div>
+
+            {/* Command input */}
+            <div className="space-y-2">
+              <Label htmlFor="dev-command" className="text-foreground">Dev server command</Label>
+              <Input
+                id="dev-command"
+                value={command}
+                onChange={(e) => {
+                  setCommand(e.target.value)
+                  setError(null)
+                }}
+                placeholder="npm run dev"
+                onKeyDown={(e) => {
+                  if (e.key === 'Enter' && !isSaving) {
+                    handleSaveAndStart()
+                  }
+                }}
+              />
+              <p className="text-xs text-muted-foreground">
+                Allowed runners: npm, npx, pnpm, yarn, python, uvicorn, flask, poetry, cargo, go
+              </p>
+            </div>
+
+            {/* Clear custom command button */}
+            {hasCustomCommand && (
+              <Button
+                variant="outline"
+                size="sm"
+                onClick={handleClear}
+                disabled={isSaving}
+                className="gap-1.5"
+              >
+                <RotateCcw size={14} />
+                Clear custom command (use auto-detection)
+              </Button>
+            )}
+
+            {/* Error display */}
+            {error && (
+              <p className="text-sm font-mono text-destructive">{error}</p>
+            )}
+          </div>
+        </DialogDescription>
+
+        <DialogFooter className="gap-2 sm:gap-0">
+          <Button variant="outline" onClick={onClose} disabled={isSaving}>
+            Cancel
+          </Button>
+          <Button onClick={handleSaveAndStart} disabled={isSaving}>
+            {isSaving ? (
+              <>
+                <Loader2 size={16} className="animate-spin mr-1.5" />
+                Saving...
+              </>
+            ) : autoStartOnSave ? (
+              'Save & Start'
+            ) : (
+              'Save'
+            )}
+          </Button>
+        </DialogFooter>
+      </DialogContent>
+    </Dialog>
+  )
+}