updated search, to be more precise

src/components/SearchBar/index.tsx

@@ -343,7 +343,10 @@ function NormalItem({
 }) {
   return (
     <Item onClick={onClick} selected={selected}>
+      <div className="flex flex-col items-center gap-0.5">
         <Search className="text-muted-foreground" />
+        <span className="text-[10px] text-muted-foreground/70 uppercase leading-none">FULL TEXT</span>
+      </div>
       <div className="font-semibold truncate">{search}</div>
     </Item>
   )
@@ -360,7 +363,10 @@ function HashtagItem({
 }) {
   return (
     <Item onClick={onClick} selected={selected}>
+      <div className="flex flex-col items-center gap-0.5">
         <Hash className="text-muted-foreground" />
+        <span className="text-[10px] text-muted-foreground/70 uppercase leading-none">HASHTAG</span>
+      </div>
       <div className="font-semibold truncate">{hashtag}</div>
     </Item>
   )
@@ -377,7 +383,10 @@ function NoteItem({
 }) {
   return (
     <Item onClick={onClick} selected={selected}>
+      <div className="flex flex-col items-center gap-0.5">
         <Notebook className="text-muted-foreground" />
+        <span className="text-[10px] text-muted-foreground/70 uppercase leading-none">NOTE</span>
+      </div>
       <div className="font-semibold truncate">{id}</div>
     </Item>
   )
@@ -413,7 +422,10 @@ function DTagItem({
 }) {
   return (
     <Item onClick={onClick} selected={selected}>
+      <div className="flex flex-col items-center gap-0.5">
         <FileText className="text-muted-foreground" />
+        <span className="text-[10px] text-muted-foreground/70 uppercase leading-none">D-TAG</span>
+      </div>
       <div className="font-semibold truncate">{dtag}</div>
     </Item>
   )
@@ -430,7 +442,10 @@ function RelayItem({
 }) {
   return (
     <Item onClick={onClick} selected={selected}>
+      <div className="flex flex-col items-center gap-0.5">
         <Server className="text-muted-foreground" />
+        <span className="text-[10px] text-muted-foreground/70 uppercase leading-none">RELAY</span>
+      </div>
       <div className="font-semibold truncate">{url}</div>
     </Item>
   )

src/components/SearchInfo.tsx

@@ -36,17 +36,13 @@ export default function SearchInfo() {
             </ul>
           </div>
           <div>
-            <strong>Metadata fields:</strong>
+            <strong>Filters:</strong>
             <ul className="ml-4 mt-1 space-y-1 list-disc">
-              <li><code className="text-xs">title:"text"</code> or <code className="text-xs">title:text</code> - Search in title tag</li>
-              <li><code className="text-xs">subject:"text"</code> or <code className="text-xs">subject:text</code> - Search in subject tag</li>
-              <li><code className="text-xs">description:"text"</code> - Search in description tag</li>
-              <li><code className="text-xs">author:"name"</code> - Search by author tag (not pubkey)</li>
+              <li><code className="text-xs">t:hashtag</code> or <code className="text-xs">hashtag:hashtag</code> - Filter by hashtag (t-tag)</li>
               <li><code className="text-xs">pubkey:npub...</code>, <code className="text-xs">pubkey:hex</code>, <code className="text-xs">pubkey:nprofile...</code>, or <code className="text-xs">pubkey:user@domain.com</code> - Filter by pubkey (accepts npub, nprofile, hex, or NIP-05)</li>
               <li><code className="text-xs">events:hex</code>, <code className="text-xs">events:note1...</code>, <code className="text-xs">events:nevent1...</code>, or <code className="text-xs">events:naddr1...</code> - Filter by specific events (accepts hex, note, nevent, or naddr)</li>
-              <li><code className="text-xs">type:value</code> - Filter by type tag</li>
               <li><code className="text-xs">kind:30023</code> - Filter by event kind (e.g., 1=notes, 30023=articles, 30817/30818=wiki)</li>
-              <li>Multiple values supported: <code className="text-xs">author:Aristotle,Plato</code> or <code className="text-xs">kind:30023,2018</code></li>
+              <li>Multiple values supported: <code className="text-xs">t:bitcoin,nostr</code>, <code className="text-xs">pubkey:npub1...,npub2...</code> or <code className="text-xs">kind:30023,2018</code></li>
             </ul>
           </div>
           <div className="pt-2 border-t">
@@ -55,8 +51,9 @@ export default function SearchInfo() {
             </p>
             <ul className="ml-4 mt-1 space-y-1 list-disc text-xs text-muted-foreground">
               <li><code>jumble search</code> → searches d-tag</li>
-              <li><code>title:"My Article" from:2024-01-01</code></li>
-              <li><code>author:"John Doe" type:wiki</code></li>
+              <li><code>t:bitcoin from:2024-01-01</code></li>
+              <li><code>pubkey:npub1abc... from:2024-01-01</code></li>
+              <li><code>kind:30023 from:2024-01-01</code></li>
               <li><code>2025-10-23 to 2025-10-30</code> → date range</li>
             </ul>
           </div>

src/lib/search-parser.ts

@@ -2,18 +2,20 @@
  * Advanced search parser for Nostr events
  * Supports multiple search parameters:
  * - Date ranges: YYYY-MM-DD to YYYY-MM-DD, from:YYYY-MM-DD, to:YYYY-MM-DD, before:YYYY-MM-DD, after:YYYY-MM-DD
- * - Title: title:"text" or title:text
- * - Subject: subject:"text" or subject:text
- * - Description: description:"text" or description:text
- * - Author: author:"name" (author tag, not pubkey)
- * - Pubkey: pubkey:npub... or pubkey:hex...
- * - Type: type:value
+ * - Hashtag: t:hashtag or hashtag:hashtag (filters by #t tag)
+ * - Pubkey: pubkey:npub... or pubkey:hex... (filters by authors field)
+ * - Events: events:hex, events:note1..., events:nevent1..., events:naddr1... (filters by ids field)
  * - Kind: kind:30023 (filter by event kind)
- * - Plain text: becomes d-tag search for replaceable events
+ * - Plain text: becomes d-tag search for replaceable events (uses #d tag)
+ * 
+ * Note: Nostr only supports single-letter tag indexes (#d, #t, #p, #e, #a, etc.)
+ * Multi-letter tags like title, subject, description, author, type are parsed but
+ * not used in filters as relays don't index them.
  */
 
 export interface AdvancedSearchParams {
   dtag?: string
+  hashtag?: string | string[] // t-tag/hashtag (uses #t tag)
   title?: string | string[]
   subject?: string | string[]
   description?: string | string[]
@@ -81,8 +83,8 @@ export function parseAdvancedSearch(query: string): AdvancedSearchParams {
   // Support both 4-digit (YYYY) and 2-digit (YY) years, date ranges (DATE to DATE)
   const dateRangePattern = /(\d{2,4}-\d{2}-\d{2})\s+to\s+(\d{2,4}-\d{2}-\d{2})/gi
   const datePattern = /(?:from|to|before|after):(\d{2,4}-\d{2}-\d{2})/gi
-  const quotedPattern = /(title|subject|description|author|type|pubkey|events):"([^"]+)"/gi
-  const unquotedPattern = /(title|subject|description|author|pubkey|type|kind|events):([^\s]+)/gi
+  const quotedPattern = /(title|subject|description|author|type|pubkey|events|hashtag|t):"([^"]+)"/gi
+  const unquotedPattern = /(title|subject|description|author|pubkey|type|kind|events|hashtag|t):([^\s]+)/gi
   
   // Pattern to detect bare nip19 IDs (nevent, note, naddr) or hex event IDs
   // These start with the prefix and are base32 encoded (use word boundary to avoid partial matches)
@@ -167,6 +169,10 @@ export function parseAdvancedSearch(query: string): AdvancedSearchParams {
 
     const values = parseValues(value)
     switch (param) {
+      case 'hashtag':
+      case 't':
+        params.hashtag = values.length === 1 ? values[0] : values
+        break
       case 'title':
         params.title = values.length === 1 ? values[0] : values
         break
@@ -209,6 +215,13 @@ export function parseAdvancedSearch(query: string): AdvancedSearchParams {
     lastIndex = Math.max(lastIndex, end)
 
     switch (param) {
+      case 'hashtag':
+      case 't':
+        if (!params.hashtag) {
+          const values = parseValues(value)
+          params.hashtag = values.length === 1 ? values[0] : values
+        }
+        break
       case 'title':
         if (!params.title) {
           const values = parseValues(value)

src/pages/secondary/NoteListPage/index.tsx

@@ -185,29 +185,19 @@ const NoteListPage = forwardRef<HTMLDivElement, NoteListPageProps>(({ index, hid
       }
       
       // Advanced search parameters (support multiple values)
-      const title = searchParams.getAll('title')
-      const subject = searchParams.getAll('subject')
-      const description = searchParams.getAll('description')
-      const author = searchParams.getAll('author')
+      // Note: Nostr only supports single-letter tag indexes, so we can't filter by
+      // multi-letter tags like title, subject, description, author, type
       const searchPubkey = searchParams.getAll('pubkey')
       const searchEvents = searchParams.getAll('events')
-      const type = searchParams.getAll('type')
       const from = searchParams.get('from')
       const to = searchParams.get('to')
       const before = searchParams.get('before')
       const after = searchParams.get('after')
       
       // Check if we have any advanced search parameters
-      if (title.length > 0 || subject.length > 0 || description.length > 0 || author.length > 0 || searchPubkey.length > 0 || searchEvents.length > 0 || type.length > 0 || from || to || before || after) {
+      if (searchPubkey.length > 0 || searchEvents.length > 0 || from || to || before || after) {
         const filter: any = {}
         
-        // Tag-based filters (support multiple values - use OR logic)
-        if (title.length > 0) filter['#title'] = title
-        if (subject.length > 0) filter['#subject'] = subject
-        if (description.length > 0) filter['#description'] = description
-        if (author.length > 0) filter['#author'] = author
-        if (type.length > 0) filter['#type'] = type
-        
         // Pubkey filter (support multiple pubkeys: hex, npub, nprofile, NIP-05)
         if (searchPubkey.length > 0) {
           const decodedPubkeys: string[] = []
@@ -315,16 +305,16 @@ const NoteListPage = forwardRef<HTMLDivElement, NoteListPageProps>(({ index, hid
         
         // Build title from search params
         const titleParts: string[] = []
-        if (title.length > 0) titleParts.push(`title:${title.join(',')}`)
-        if (subject.length > 0) titleParts.push(`subject:${subject.join(',')}`)
-        if (author.length > 0) titleParts.push(`author:${author.join(',')}`)
+        // Note: hashtag is handled separately via 't' parameter earlier in the function
         if (searchPubkey.length > 0) {
           const pubkeyDisplay = searchPubkey.length === 1 
             ? `${searchPubkey[0].substring(0, 16)}...` 
             : `${searchPubkey.length} pubkeys`
           titleParts.push(`pubkey:${pubkeyDisplay}`)
         }
-        if (type.length > 0) titleParts.push(`type:${type.join(',')}`)
+        if (searchEvents.length > 0) {
+          titleParts.push(`${searchEvents.length} event${searchEvents.length > 1 ? 's' : ''}`)
+        }
         if (from || to || before || after) {
           const dateParts: string[] = []
           if (from) dateParts.push(`from:${from}`)

src/pages/secondary/SearchPage/index.tsx

@@ -46,44 +46,39 @@ const SearchPage = forwardRef(({ index, hideTitlebar = false }: { index?: number
         const searchParams = parseAdvancedSearch(params.search)
         
         // Check if we have advanced search parameters (not just plain text)
+        // Exclude unsupported multi-letter tag params (title, subject, description, author, type)
         const hasAdvancedParams = Object.keys(searchParams).some(key => 
-          key !== 'dtag' && searchParams[key as keyof typeof searchParams]
+          key !== 'dtag' && 
+          key !== 'title' && 
+          key !== 'subject' && 
+          key !== 'description' && 
+          key !== 'author' && 
+          key !== 'type' &&
+          searchParams[key as keyof typeof searchParams]
         )
         
+        // Handle hashtag search - route to hashtag page
+        if (searchParams.hashtag) {
+          const hashtag = Array.isArray(searchParams.hashtag) ? searchParams.hashtag[0] : searchParams.hashtag
+          const urlParams = new URLSearchParams()
+          urlParams.set('t', hashtag)
+          if (searchParams.kinds) {
+            searchParams.kinds.forEach(k => urlParams.append('k', k.toString()))
+          }
+          push(`/notes?${urlParams.toString()}`)
+          return
+        }
+        
         if (hasAdvancedParams || searchParams.dtag) {
           // Route to NoteListPage with advanced search
+          // Note: Only include parameters that Nostr relays actually support
+          // (single-letter tag indexes: #d, #t, #p, #e, #a, etc.)
           const urlParams = new URLSearchParams()
           if (searchParams.dtag) {
             urlParams.set('d', searchParams.dtag)
           }
-          if (searchParams.title) {
-            if (Array.isArray(searchParams.title)) {
-              searchParams.title.forEach(t => urlParams.append('title', t))
-            } else {
-              urlParams.set('title', searchParams.title)
-            }
-          }
-          if (searchParams.subject) {
-            if (Array.isArray(searchParams.subject)) {
-              searchParams.subject.forEach(s => urlParams.append('subject', s))
-            } else {
-              urlParams.set('subject', searchParams.subject)
-            }
-          }
-          if (searchParams.description) {
-            if (Array.isArray(searchParams.description)) {
-              searchParams.description.forEach(d => urlParams.append('description', d))
-            } else {
-              urlParams.set('description', searchParams.description)
-            }
-          }
-          if (searchParams.author) {
-            if (Array.isArray(searchParams.author)) {
-              searchParams.author.forEach(a => urlParams.append('author', a))
-            } else {
-              urlParams.set('author', searchParams.author)
-            }
-          }
+          // Skip title, subject, description, author, type - these use multi-letter tags
+          // that Nostr relays don't index
           if (searchParams.pubkey) {
             if (Array.isArray(searchParams.pubkey)) {
               searchParams.pubkey.forEach(p => urlParams.append('pubkey', p))
@@ -98,13 +93,6 @@ const SearchPage = forwardRef(({ index, hideTitlebar = false }: { index?: number
               urlParams.set('events', searchParams.events)
             }
           }
-          if (searchParams.type) {
-            if (Array.isArray(searchParams.type)) {
-              searchParams.type.forEach(t => urlParams.append('type', t))
-            } else {
-              urlParams.set('type', searchParams.type)
-            }
-          }
           if (searchParams.from) urlParams.set('from', searchParams.from)
           if (searchParams.to) urlParams.set('to', searchParams.to)
           if (searchParams.before) urlParams.set('before', searchParams.before)