Pipeline UI/UX redesign: inline editing, flowchart, sidebar stepper

- Add InlineEditableText, EditableCard, SidebarStepper shared components
- Add PipelineFlowchart (interactive SVG stage visualization)
- Add StageConfigEditor and usePipelineInlineEdit hook
- Redesign detail page: flowchart replaces nested tabs, inline editing
- Redesign creation wizard: sidebar stepper replaces accordion sections
- Enhance list page: status dots, track indicators, relative timestamps
- Convert edit page to redirect (editing now inline on detail page)
- Delete old WizardSection accordion component

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

src/hooks/use-pipeline-inline-edit.ts

@@ -0,0 +1,46 @@
+import { trpc } from '@/lib/trpc/client'
+import { toast } from 'sonner'
+
+export function usePipelineInlineEdit(pipelineId: string) {
+  const utils = trpc.useUtils()
+
+  const updateMutation = trpc.pipeline.update.useMutation({
+    onSuccess: () => {
+      utils.pipeline.getDraft.invalidate({ id: pipelineId })
+    },
+    onError: (err) => {
+      toast.error(`Failed to update pipeline: ${err.message}`)
+    },
+  })
+
+  const updateConfigMutation = trpc.stage.updateConfig.useMutation({
+    onSuccess: () => {
+      utils.pipeline.getDraft.invalidate({ id: pipelineId })
+    },
+    onError: (err) => {
+      toast.error(`Failed to update stage: ${err.message}`)
+    },
+  })
+
+  const updatePipeline = async (
+    data: { name?: string; slug?: string; status?: 'DRAFT' | 'ACTIVE' | 'CLOSED' | 'ARCHIVED'; settingsJson?: Record<string, unknown> }
+  ) => {
+    await updateMutation.mutateAsync({ id: pipelineId, ...data })
+    toast.success('Pipeline updated')
+  }
+
+  const updateStageConfig = async (
+    stageId: string,
+    configJson: Record<string, unknown>,
+    name?: string
+  ) => {
+    await updateConfigMutation.mutateAsync({ id: stageId, configJson, name })
+    toast.success('Stage configuration updated')
+  }
+
+  return {
+    isUpdating: updateMutation.isPending || updateConfigMutation.isPending,
+    updatePipeline,
+    updateStageConfig,
+  }
+}