feat(ai): implement intelligent auto-tagging system

- Added multi-provider AI infrastructure (OpenAI/Ollama)
- Implemented real-time tag suggestions with debounced analysis
- Created AI diagnostics and database maintenance tools in Settings
- Added automated garbage collection for orphan labels
- Refined UX with deterministic color hashing and interactive ghost tags

keep-notes/context/LabelContext.tsx

@@ -2,6 +2,7 @@
 
 import { createContext, useContext, useState, useEffect, ReactNode } from 'react'
 import { LabelColorName, LABEL_COLORS } from '@/lib/types'
+import { getHashColor } from '@/lib/utils'
 
 export interface Label {
   id: string
@@ -28,11 +29,10 @@ export function LabelProvider({ children }: { children: ReactNode }) {
   const [labels, setLabels] = useState<Label[]>([])
   const [loading, setLoading] = useState(true)
 
-  // Fetch labels from API
   const fetchLabels = async () => {
     try {
       setLoading(true)
-      const response = await fetch('/api/labels')
+      const response = await fetch('/api/labels', { cache: 'no-store' })
       const data = await response.json()
       if (data.success && data.data) {
         setLabels(data.data)
@@ -50,9 +50,7 @@ export function LabelProvider({ children }: { children: ReactNode }) {
 
   const addLabel = async (name: string, color?: LabelColorName) => {
     try {
-      // Get existing label color if not provided
-      const existingColor = getLabelColorHelper(name)
-      const labelColor = color || existingColor
+      const labelColor = color || getHashColor(name);
 
       const response = await fetch('/api/labels', {
         method: 'POST',
@@ -130,4 +128,4 @@ export function useLabels() {
     throw new Error('useLabels must be used within a LabelProvider')
   }
   return context
-}
+}