.gitignore

@@ -7,3 +7,4 @@ out/
 medialore.db
 medialore.db-shm
 medialore.db-wal
+tsconfig.tsbuildinfo

src/app/api/tags/items/route.ts

@@ -1,11 +1,14 @@
 import { NextRequest, NextResponse } from 'next/server'
-import { getTags, addTag } from '@/lib/tags'
+import { getTags, getTagsSortedByUsage, addTag } from '@/lib/tags'
 
 export async function GET(request: NextRequest) {
   try {
     const { searchParams } = new URL(request.url)
     const categoryId = searchParams.get('categoryId') ?? undefined
-    return NextResponse.json(getTags(categoryId))
+    const sort = searchParams.get('sort')
+    return NextResponse.json(
+      sort === 'usage' ? getTagsSortedByUsage(categoryId) : getTags(categoryId)
+    )
   } catch (err) {
     return NextResponse.json({ error: (err as Error).message }, { status: 500 })
   }

src/app/api/tags/library-assignments/route.ts

@@ -0,0 +1,8 @@
+import { getTagAssignmentsForLibrary } from '@/lib/tags'
+
+export async function GET(req: Request) {
+  const { searchParams } = new URL(req.url)
+  const libraryId = searchParams.get('libraryId')
+  if (!libraryId) return Response.json({ error: 'libraryId required' }, { status: 400 })
+  return Response.json(getTagAssignmentsForLibrary(libraryId))
+}

src/components/FilterPanel.tsx

@@ -0,0 +1,130 @@
+'use client'
+
+import { useEffect, useState } from 'react'
+import type { Tag, TagCategory } from '@/types'
+
+interface Props {
+  libraryId: string
+  assignments: Record<string, string[]>
+  search: string
+  onSearchChange: (q: string) => void
+  selectedTagIds: Set<string>
+  onTagToggle: (tagId: string) => void
+  refreshKey?: number
+}
+
+export default function FilterPanel({ assignments, search, onSearchChange, selectedTagIds, onTagToggle, refreshKey }: Props) {
+  const [categories, setCategories] = useState<TagCategory[]>([])
+  const [tags, setTags] = useState<Tag[]>([])
+  const [loading, setLoading] = useState(true)
+
+  useEffect(() => {
+    Promise.all([
+      fetch('/api/tags/categories').then((r) => r.json()),
+      fetch('/api/tags/items').then((r) => r.json()),
+    ])
+      .then(([cats, ts]: [TagCategory[], Tag[]]) => {
+        setCategories(cats)
+        setTags(ts)
+      })
+      .finally(() => setLoading(false))
+  }, [refreshKey])
+
+  const usedTagIds = new Set(Object.values(assignments).flat())
+  const usedTags = tags.filter((t) => usedTagIds.has(t.id))
+  const usedCategoryIds = new Set(usedTags.map((t) => t.categoryId))
+  const usedCategories = categories.filter((c) => usedCategoryIds.has(c.id))
+
+  const hasTags = usedTags.length > 0
+
+  return (
+    <div className="flex flex-col gap-4">
+      {/* Search */}
+      <input
+        type="text"
+        placeholder="Search…"
+        value={search}
+        onChange={(e) => onSearchChange(e.target.value)}
+        className="w-full rounded-lg px-3 py-2 text-sm outline-none"
+        style={{
+          backgroundColor: 'var(--surface)',
+          border: '1px solid var(--border)',
+          color: 'var(--text-primary)',
+        }}
+      />
+
+      {/* Tag filters */}
+      {loading ? (
+        <div className="flex flex-col gap-3">
+          {[0, 1].map((i) => (
+            <div key={i} className="flex flex-col gap-1.5">
+              <div
+                className="h-3 w-16 rounded animate-pulse"
+                style={{ backgroundColor: 'var(--border)' }}
+              />
+              <div className="flex flex-wrap gap-1.5">
+                {[50, 65, 42].map((w) => (
+                  <div
+                    key={w}
+                    className="h-5 rounded-full animate-pulse"
+                    style={{ width: w, backgroundColor: 'var(--border)' }}
+                  />
+                ))}
+              </div>
+            </div>
+          ))}
+        </div>
+      ) : hasTags ? (
+        <div className="flex flex-col gap-3">
+          {usedCategories.map((cat) => {
+            const catTags = usedTags.filter((t) => t.categoryId === cat.id)
+            if (catTags.length === 0) return null
+            return (
+              <div key={cat.id}>
+                <p className="text-xs mb-1.5" style={{ color: 'var(--text-secondary)' }}>
+                  {cat.name}
+                </p>
+                <div className="flex flex-wrap gap-1.5">
+                  {catTags.map((tag) => {
+                    const active = selectedTagIds.has(tag.id)
+                    return (
+                      <button
+                        key={tag.id}
+                        onClick={() => onTagToggle(tag.id)}
+                        className="px-2 py-0.5 rounded-full text-xs font-medium transition-colors"
+                        style={{
+                          backgroundColor: active ? 'var(--accent)' : 'var(--border)',
+                          color: active ? '#fff' : 'var(--text-secondary)',
+                          cursor: 'pointer',
+                        }}
+                        onMouseEnter={(e) => {
+                          const el = e.currentTarget as HTMLElement
+                          el.style.backgroundColor = active ? 'var(--accent-hover)' : 'var(--text-secondary)'
+                          if (!active) el.style.color = 'var(--background)'
+                        }}
+                        onMouseLeave={(e) => {
+                          const el = e.currentTarget as HTMLElement
+                          el.style.backgroundColor = active ? 'var(--accent)' : 'var(--border)'
+                          el.style.color = active ? '#fff' : 'var(--text-secondary)'
+                        }}
+                      >
+                        {tag.name}
+                      </button>
+                    )
+                  })}
+                </div>
+              </div>
+            )
+          })}
+        </div>
+      ) : (
+        <p className="text-xs" style={{ color: 'var(--text-secondary)' }}>
+          No tags defined.{' '}
+          <a href="/manage/tags" style={{ color: 'var(--accent)' }}>
+            Manage tags →
+          </a>
+        </p>
+      )}
+    </div>
+  )
+}

src/components/games/GameDetailModal.tsx

@@ -8,9 +8,10 @@ interface Props {
   game: Game
   libraryId: string
   onClose: () => void
+  onTagsChanged?: () => void
 }
 
-export default function GameDetailModal({ game, libraryId, onClose }: Props) {
+export default function GameDetailModal({ game, libraryId, onClose, onTagsChanged }: Props) {
   const overlayRef = useRef<HTMLDivElement>(null)
 
   useEffect(() => {
@@ -97,7 +98,7 @@ export default function GameDetailModal({ game, libraryId, onClose }: Props) {
             <p className="text-xs font-semibold uppercase tracking-wider mb-2" style={{ color: 'var(--text-secondary)' }}>
               Tags
             </p>
-            <TagSelector mediaKey={`${libraryId}:${game.id}`} />
+            <TagSelector mediaKey={`${libraryId}:${game.id}`} onTagsChanged={onTagsChanged} />
           </div>
         </div>
       </div>

src/components/games/GamesView.tsx

@@ -1,8 +1,9 @@
 'use client'
 
-import { useEffect, useState } from 'react'
+import { useEffect, useState, useCallback } from 'react'
 import type { Game } from '@/types'
 import GameDetailModal from './GameDetailModal'
+import FilterPanel from '@/components/FilterPanel'
 
 interface Props {
   libraryId: string
@@ -13,6 +14,17 @@ export default function GamesView({ libraryId }: Props) {
   const [loading, setLoading] = useState(true)
   const [error, setError] = useState<string | null>(null)
   const [selected, setSelected] = useState<Game | null>(null)
+  const [search, setSearch] = useState('')
+  const [selectedTagIds, setSelectedTagIds] = useState<Set<string>>(new Set())
+  const [assignments, setAssignments] = useState<Record<string, string[]>>({})
+  const [filterRefreshKey, setFilterRefreshKey] = useState(0)
+
+  const toggleTag = (tagId: string) =>
+    setSelectedTagIds((prev) => {
+      const next = new Set(prev)
+      next.has(tagId) ? next.delete(tagId) : next.add(tagId)
+      return next
+    })
 
   useEffect(() => {
     fetch(`/api/games?libraryId=${encodeURIComponent(libraryId)}`)
@@ -27,14 +39,47 @@ export default function GamesView({ libraryId }: Props) {
       })
   }, [libraryId])
 
-  if (loading) return <LoadingGrid />
-  if (error) return <ErrorMessage message={error} />
-  if (games.length === 0) return <EmptyState />
+  const fetchAssignments = useCallback(() => {
+    fetch(`/api/tags/library-assignments?libraryId=${encodeURIComponent(libraryId)}`)
+      .then((r) => r.json())
+      .then(setAssignments)
+      .catch(() => {})
+  }, [libraryId])
+
+  useEffect(() => { fetchAssignments() }, [fetchAssignments])
+
+  const filtered = games.filter((game) => {
+    if (search && !game.title.toLowerCase().includes(search.toLowerCase())) return false
+    if (selectedTagIds.size > 0) {
+      const gameTags = assignments[`${libraryId}:${game.id}`] ?? []
+      if (![...selectedTagIds].every((id) => gameTags.includes(id))) return false
+    }
+    return true
+  })
 
   return (
-    <>
+    <div className="flex gap-6 items-start">
+      <div className="w-52 flex-shrink-0">
+        <FilterPanel
+          libraryId={libraryId}
+          assignments={assignments}
+          search={search}
+          onSearchChange={setSearch}
+          selectedTagIds={selectedTagIds}
+          onTagToggle={toggleTag}
+          refreshKey={filterRefreshKey}
+        />
+      </div>
+      <div className="flex-1 min-w-0">
+        {loading ? (
+          <LoadingGrid />
+        ) : error ? (
+          <ErrorMessage message={error} />
+        ) : games.length === 0 ? (
+          <EmptyState />
+        ) : (
           <div className="grid gap-4 grid-cols-2 sm:grid-cols-3 md:grid-cols-4 lg:grid-cols-5 xl:grid-cols-6">
-        {games.map((game) => (
+            {filtered.map((game) => (
               <button
                 key={game.id}
                 onClick={() => setSelected(game)}
@@ -78,11 +123,18 @@ export default function GamesView({ libraryId }: Props) {
               </button>
             ))}
           </div>
+        )}
 
         {selected && (
-        <GameDetailModal game={selected} libraryId={libraryId} onClose={() => setSelected(null)} />
+          <GameDetailModal
+            game={selected}
+            libraryId={libraryId}
+            onClose={() => setSelected(null)}
+            onTagsChanged={() => { setFilterRefreshKey((k) => k + 1); fetchAssignments() }}
+          />
         )}
-    </>
+      </div>
+    </div>
   )
 }
 

src/components/mixed/MixedView.tsx

@@ -5,6 +5,7 @@ import type { DirectoryListing, FileEntry } from '@/types'
 import VideoPlayerModal from './VideoPlayerModal'
 import ImageLightbox from './ImageLightbox'
 import TagSelector from '@/components/tags/TagSelector'
+import FilterPanel from '@/components/FilterPanel'
 
 interface Props {
   libraryId: string
@@ -25,6 +26,17 @@ export default function MixedView({ libraryId, initialPath }: Props) {
   const [error, setError] = useState<string | null>(null)
   const [modal, setModal] = useState<ModalState>(null)
   const [tagPanel, setTagPanel] = useState<TagPanelState>(null)
+  const [search, setSearch] = useState('')
+  const [selectedTagIds, setSelectedTagIds] = useState<Set<string>>(new Set())
+  const [assignments, setAssignments] = useState<Record<string, string[]>>({})
+  const [filterRefreshKey, setFilterRefreshKey] = useState(0)
+
+  const toggleTag = (tagId: string) =>
+    setSelectedTagIds((prev) => {
+      const next = new Set(prev)
+      next.has(tagId) ? next.delete(tagId) : next.add(tagId)
+      return next
+    })
 
   const loadPath = useCallback(
     (path: string) => {
@@ -51,6 +63,15 @@ export default function MixedView({ libraryId, initialPath }: Props) {
     loadPath(initialPath)
   }, [loadPath, initialPath])
 
+  const fetchAssignments = useCallback(() => {
+    fetch(`/api/tags/library-assignments?libraryId=${encodeURIComponent(libraryId)}`)
+      .then((r) => r.json())
+      .then(setAssignments)
+      .catch(() => {})
+  }, [libraryId])
+
+  useEffect(() => { fetchAssignments() }, [fetchAssignments])
+
   const handleEntry = (entry: FileEntry) => {
     if (entry.type === 'directory') {
       const newPath = currentPath ? `${currentPath}/${entry.name}` : entry.name
@@ -85,8 +106,34 @@ export default function MixedView({ libraryId, initialPath }: Props) {
     ? currentPath.split('/').filter(Boolean)
     : []
 
+  const mediaKeyFor = (entry: FileEntry) => {
+    const rel = currentPath ? `${currentPath}/${entry.name}` : entry.name
+    return `${libraryId}:${encodeURIComponent(rel)}`
+  }
+
+  const filteredEntries = (listing?.entries ?? []).filter((entry) => {
+    if (search && !entry.name.toLowerCase().includes(search.toLowerCase())) return false
+    if (selectedTagIds.size > 0 && entry.type !== 'directory') {
+      const entryTags = assignments[mediaKeyFor(entry)] ?? []
+      if (![...selectedTagIds].every((id) => entryTags.includes(id))) return false
+    }
+    return true
+  })
+
   return (
-    <>
+    <div className="flex gap-6 items-start">
+      <div className="w-52 flex-shrink-0">
+        <FilterPanel
+          libraryId={libraryId}
+          assignments={assignments}
+          search={search}
+          onSearchChange={setSearch}
+          selectedTagIds={selectedTagIds}
+          onTagToggle={toggleTag}
+          refreshKey={filterRefreshKey}
+        />
+      </div>
+      <div className="flex-1 min-w-0">
       {/* Breadcrumb */}
       <nav className="flex items-center gap-1 mb-6 flex-wrap text-sm">
         <button
@@ -126,7 +173,7 @@ export default function MixedView({ libraryId, initialPath }: Props) {
 
       {!loading && !error && listing && (
         <>
-          {listing.entries.length === 0 ? (
+          {filteredEntries.length === 0 ? (
             <div className="rounded-lg border p-12 text-center" style={{ borderColor: 'var(--border)', color: 'var(--text-secondary)' }}>
               This folder is empty.
             </div>
@@ -145,7 +192,7 @@ export default function MixedView({ libraryId, initialPath }: Props) {
                   <span>Up</span>
                 </button>
               )}
-              {listing.entries.map((entry) => (
+              {filteredEntries.map((entry) => (
                 <EntryTile key={entry.name} entry={entry} onOpen={handleEntry} onTag={handleTagEntry} />
               ))}
             </div>
@@ -192,12 +239,16 @@ export default function MixedView({ libraryId, initialPath }: Props) {
               </button>
             </div>
             <div className="px-5 py-4">
-              <TagSelector mediaKey={tagPanel.mediaKey} />
+              <TagSelector
+                mediaKey={tagPanel.mediaKey}
+                onTagsChanged={() => { setFilterRefreshKey((k) => k + 1); fetchAssignments() }}
+              />
             </div>
           </div>
         </div>
       )}
-    </>
+      </div>
+    </div>
   )
 }
 
@@ -222,9 +273,12 @@ function EntryTile({ entry, onOpen, onTag }: { entry: FileEntry; onOpen: (e: Fil
   const icon = isDir ? '📁' : isVideo ? '▶' : entry.mediaType === 'image' ? '🖼' : '📄'
 
   return (
-    <button
+    <div
+      role="button"
+      tabIndex={0}
       onClick={() => onOpen(entry)}
-      className="group relative flex flex-col rounded-xl border overflow-hidden text-xs transition-all focus:outline-none text-left"
+      onKeyDown={(e) => { if (e.key === 'Enter' || e.key === ' ') { e.preventDefault(); onOpen(entry) } }}
+      className="group relative flex flex-col rounded-xl border overflow-hidden text-xs transition-all cursor-pointer"
       style={{ borderColor: 'var(--border)', backgroundColor: 'var(--surface)', aspectRatio: '1 / 1' }}
       onMouseEnter={(e) => {
         ;(e.currentTarget as HTMLElement).style.borderColor = 'var(--accent)'
@@ -303,7 +357,7 @@ function EntryTile({ entry, onOpen, onTag }: { entry: FileEntry; onOpen: (e: Fil
       >
         🏷
       </button>
-    </button>
+    </div>
   )
 }
 

src/components/tags/TagSelector.tsx

@@ -6,6 +6,7 @@ import TagBadge from './TagBadge'
 
 interface Props {
   mediaKey: string
+  onTagsChanged?: () => void
 }
 
 interface AllTags {
@@ -13,14 +14,29 @@ interface AllTags {
   tags: Tag[]
 }
 
-export default function TagSelector({ mediaKey }: Props) {
+export default function TagSelector({ mediaKey, onTagsChanged }: Props) {
   const [assigned, setAssigned] = useState<{ tags: Tag[]; categories: TagCategory[] }>({
     tags: [],
     categories: [],
   })
   const [all, setAll] = useState<AllTags>({ categories: [], tags: [] })
   const [loading, setLoading] = useState(true)
-  const [busy, setBusy] = useState<string | null>(null) // tagId being toggled
+  const [busy, setBusy] = useState<string | null>(null)
+
+  // Per-category search text
+  const [categorySearches, setCategorySearches] = useState<Record<string, string>>({})
+
+  // Inline add-tag flow
+  const [addingTagTo, setAddingTagTo] = useState<string | null>(null)
+  const [newTagName, setNewTagName] = useState('')
+  const [tagSaveError, setTagSaveError] = useState<string | null>(null)
+  const [savingTag, setSavingTag] = useState(false)
+
+  // Inline add-category flow
+  const [addingCategory, setAddingCategory] = useState(false)
+  const [newCategoryName, setNewCategoryName] = useState('')
+  const [categorySaveError, setCategorySaveError] = useState<string | null>(null)
+  const [savingCategory, setSavingCategory] = useState(false)
 
   const fetchAssigned = useCallback(() => {
     return fetch(`/api/tags/assignments?mediaKey=${encodeURIComponent(mediaKey)}`)
@@ -31,7 +47,7 @@ export default function TagSelector({ mediaKey }: Props) {
   const fetchAll = useCallback(() => {
     return Promise.all([
       fetch('/api/tags/categories').then((r) => r.json()),
-      fetch('/api/tags/items').then((r) => r.json()),
+      fetch('/api/tags/items?sort=usage').then((r) => r.json()),
     ]).then(([categories, tags]: [TagCategory[], Tag[]]) => {
       setAll({ categories, tags })
     })
@@ -61,11 +77,71 @@ export default function TagSelector({ mediaKey }: Props) {
         })
       }
       await fetchAssigned()
+      onTagsChanged?.()
     } finally {
       setBusy(null)
     }
   }
 
+  const submitAddTag = async (categoryId: string) => {
+    const name = newTagName.trim()
+    if (!name) return
+    setSavingTag(true)
+    setTagSaveError(null)
+    try {
+      const res = await fetch('/api/tags/items', {
+        method: 'POST',
+        headers: { 'Content-Type': 'application/json' },
+        body: JSON.stringify({ name, categoryId }),
+      })
+      if (!res.ok) {
+        const { error } = await res.json()
+        setTagSaveError(error)
+        return
+      }
+      const newTag: Tag = await res.json()
+      setNewTagName('')
+      setAddingTagTo(null)
+      await Promise.all([
+        fetch('/api/tags/assignments', {
+          method: 'POST',
+          headers: { 'Content-Type': 'application/json' },
+          body: JSON.stringify({ mediaKey, tagId: newTag.id }),
+        }),
+        fetchAll(),
+      ])
+      await fetchAssigned()
+      onTagsChanged?.()
+    } finally {
+      setSavingTag(false)
+    }
+  }
+
+  const submitAddCategory = async () => {
+    const name = newCategoryName.trim()
+    if (!name) return
+    setSavingCategory(true)
+    setCategorySaveError(null)
+    try {
+      const res = await fetch('/api/tags/categories', {
+        method: 'POST',
+        headers: { 'Content-Type': 'application/json' },
+        body: JSON.stringify({ name }),
+      })
+      if (!res.ok) {
+        const { error } = await res.json()
+        setCategorySaveError(error)
+        return
+      }
+      setNewCategoryName('')
+      setAddingCategory(false)
+      await fetchAll()
+      onTagsChanged?.()
+    } finally {
+      setSavingCategory(false)
+    }
+  }
+
   if (loading) {
     return (
       <div className="flex gap-1.5 flex-wrap">
@@ -80,40 +156,105 @@ export default function TagSelector({ mediaKey }: Props) {
     )
   }
 
-  const categoryMap = Object.fromEntries(all.categories.map((c) => [c.id, c]))
   const assignedCategoryMap = Object.fromEntries(assigned.categories.map((c) => [c.id, c]))
 
-  const hasAnyTags = all.tags.length > 0
-
   return (
     <div className="flex flex-col gap-3">
-      {/* Assigned tags */}
+      {/* Assigned tags grouped by category */}
       {assigned.tags.length > 0 && (
         <div className="flex flex-wrap gap-1.5">
-          {assigned.tags.map((tag) => (
-            <TagBadge
+          {(() => {
+            const groups = new Map<string, Tag[]>()
+            const ungrouped: Tag[] = []
+            for (const tag of assigned.tags) {
+              if (tag.categoryId) {
+                const arr = groups.get(tag.categoryId) ?? []
+                arr.push(tag)
+                groups.set(tag.categoryId, arr)
+              } else {
+                ungrouped.push(tag)
+              }
+            }
+            return (
+              <>
+                {Array.from(groups.entries()).map(([catId, tags]) => {
+                  const cat = assignedCategoryMap[catId]
+                  return (
+                    <span
+                      key={catId}
+                      className="inline-flex items-center gap-1.5 px-2 py-0.5 rounded-full text-xs font-medium"
+                      style={{ backgroundColor: 'var(--border)', color: 'var(--text-primary)' }}
+                    >
+                      <span style={{ color: 'var(--text-secondary)' }}>{cat?.name}:</span>
+                      {tags.map((tag) => (
+                        <span
                           key={tag.id}
-              tag={tag}
-              category={assignedCategoryMap[tag.categoryId]}
-              onRemove={() => toggleTag(tag)}
-            />
+                          className="inline-flex items-center gap-0.5 px-1.5 py-0.5 rounded-full"
+                          style={{ backgroundColor: 'var(--surface-hover)' }}
+                        >
+                          {tag.name}
+                          <button
+                            onClick={() => toggleTag(tag)}
+                            className="ml-0.5 leading-none transition-colors"
+                            style={{ color: 'var(--text-secondary)' }}
+                            onMouseEnter={(e) => ((e.currentTarget as HTMLElement).style.color = 'var(--text-primary)')}
+                            onMouseLeave={(e) => ((e.currentTarget as HTMLElement).style.color = 'var(--text-secondary)')}
+                            aria-label={`Remove tag ${tag.name}`}
+                          >
+                            ✕
+                          </button>
+                        </span>
                       ))}
+                    </span>
+                  )
+                })}
+                {ungrouped.map((tag) => (
+                  <TagBadge key={tag.id} tag={tag} onRemove={() => toggleTag(tag)} />
+                ))}
+              </>
+            )
+          })()}
         </div>
       )}
 
       {/* Tag picker grouped by category */}
-      {hasAnyTags ? (
       <div className="flex flex-col gap-2">
         {all.categories.map((category) => {
           const categoryTags = all.tags.filter((t) => t.categoryId === category.id)
-            if (categoryTags.length === 0) return null
+          const search = categorySearches[category.id] ?? ''
+          const visibleTags = categoryTags
+            .filter((t) => !search || t.name.toLowerCase().includes(search.toLowerCase()))
+            .slice(0, 25)
+
           return (
             <div key={category.id}>
-                <p className="text-xs mb-1" style={{ color: 'var(--text-secondary)' }}>
+              {/* Category header: name + search input */}
+              <div className="flex items-center justify-between gap-2 mb-1">
+                <p className="text-xs" style={{ color: 'var(--text-secondary)' }}>
                   {category.name}
                 </p>
+                {categoryTags.length > 0 && (
+                  <input
+                    type="text"
+                    placeholder="search…"
+                    value={search}
+                    onChange={(e) =>
+                      setCategorySearches((prev) => ({ ...prev, [category.id]: e.target.value }))
+                    }
+                    className="text-xs px-1.5 py-0.5 rounded outline-none"
+                    style={{
+                      backgroundColor: 'var(--surface)',
+                      border: '1px solid var(--border)',
+                      color: 'var(--text-primary)',
+                      width: 90,
+                    }}
+                  />
+                )}
+              </div>
+
+              {/* Tag pills + add button */}
               <div className="flex flex-wrap gap-1.5">
-                  {categoryTags.map((tag) => {
+                {visibleTags.map((tag) => {
                   const active = isAssigned(tag.id)
                   const isBusy = busy === tag.id
                   return (
@@ -144,19 +285,165 @@ export default function TagSelector({ mediaKey }: Props) {
                     </button>
                   )
                 })}
+
+                {/* Inline add-tag form or + button */}
+                {addingTagTo === category.id ? (
+                  <span className="inline-flex items-center gap-1">
+                    <input
+                      autoFocus
+                      type="text"
+                      value={newTagName}
+                      onChange={(e) => {
+                        setNewTagName(e.target.value)
+                        setTagSaveError(null)
+                      }}
+                      onKeyDown={(e) => {
+                        if (e.key === 'Enter') submitAddTag(category.id)
+                        if (e.key === 'Escape') {
+                          setAddingTagTo(null)
+                          setNewTagName('')
+                          setTagSaveError(null)
+                        }
+                      }}
+                      placeholder="tag name"
+                      className="px-1.5 py-0.5 rounded text-xs outline-none"
+                      style={{
+                        backgroundColor: 'var(--surface)',
+                        border: '1px solid var(--border)',
+                        color: 'var(--text-primary)',
+                        width: 90,
+                      }}
+                      disabled={savingTag}
+                    />
+                    <button
+                      onClick={() => submitAddTag(category.id)}
+                      disabled={savingTag}
+                      className="px-1.5 py-0.5 rounded text-xs transition-colors"
+                      style={{ backgroundColor: 'var(--accent)', color: '#fff' }}
+                      title="Save"
+                    >
+                      {savingTag ? '…' : '✓'}
+                    </button>
+                    <button
+                      onClick={() => {
+                        setAddingTagTo(null)
+                        setNewTagName('')
+                        setTagSaveError(null)
+                      }}
+                      className="px-1.5 py-0.5 rounded text-xs transition-colors"
+                      style={{ backgroundColor: 'var(--border)', color: 'var(--text-secondary)' }}
+                      title="Cancel"
+                    >
+                      ✕
+                    </button>
+                    {tagSaveError && (
+                      <span className="text-xs" style={{ color: '#f87171' }}>
+                        {tagSaveError}
+                      </span>
+                    )}
+                  </span>
+                ) : (
+                  <button
+                    onClick={() => {
+                      setAddingTagTo(category.id)
+                      setNewTagName('')
+                      setTagSaveError(null)
+                    }}
+                    className="px-2 py-0.5 rounded-full text-xs font-medium transition-colors"
+                    style={{ backgroundColor: 'var(--border)', color: 'var(--text-secondary)' }}
+                    title={`Add tag to ${category.name}`}
+                    onMouseEnter={(e) => {
+                      const el = e.currentTarget as HTMLElement
+                      el.style.backgroundColor = 'var(--text-secondary)'
+                      el.style.color = 'var(--background)'
+                    }}
+                    onMouseLeave={(e) => {
+                      const el = e.currentTarget as HTMLElement
+                      el.style.backgroundColor = 'var(--border)'
+                      el.style.color = 'var(--text-secondary)'
+                    }}
+                  >
+                    +
+                  </button>
+                )}
               </div>
             </div>
           )
         })}
+
+        {/* Add category */}
+        <div className="mt-1">
+          {addingCategory ? (
+            <div className="flex items-center gap-1.5">
+              <input
+                autoFocus
+                type="text"
+                value={newCategoryName}
+                onChange={(e) => {
+                  setNewCategoryName(e.target.value)
+                  setCategorySaveError(null)
+                }}
+                onKeyDown={(e) => {
+                  if (e.key === 'Enter') submitAddCategory()
+                  if (e.key === 'Escape') {
+                    setAddingCategory(false)
+                    setNewCategoryName('')
+                    setCategorySaveError(null)
+                  }
+                }}
+                placeholder="category name"
+                className="flex-1 text-xs px-2 py-1 rounded outline-none"
+                style={{
+                  backgroundColor: 'var(--surface)',
+                  border: '1px solid var(--border)',
+                  color: 'var(--text-primary)',
+                }}
+                disabled={savingCategory}
+              />
+              <button
+                onClick={submitAddCategory}
+                disabled={savingCategory}
+                className="px-1.5 py-0.5 rounded text-xs transition-colors"
+                style={{ backgroundColor: 'var(--accent)', color: '#fff' }}
+                title="Save"
+              >
+                {savingCategory ? '…' : '✓'}
+              </button>
+              <button
+                onClick={() => {
+                  setAddingCategory(false)
+                  setNewCategoryName('')
+                  setCategorySaveError(null)
+                }}
+                className="px-1.5 py-0.5 rounded text-xs transition-colors"
+                style={{ backgroundColor: 'var(--border)', color: 'var(--text-secondary)' }}
+                title="Cancel"
+              >
+                ✕
+              </button>
+              {categorySaveError && (
+                <span className="text-xs" style={{ color: '#f87171' }}>
+                  {categorySaveError}
+                </span>
+              )}
             </div>
           ) : (
-        <p className="text-xs" style={{ color: 'var(--text-secondary)' }}>
-          No tags defined yet.{' '}
-          <a href="/manage/tags" style={{ color: 'var(--accent)' }}>
-            Manage tags →
-          </a>
-        </p>
+            <button
+              onClick={() => {
+                setAddingCategory(true)
+                setNewCategoryName('')
+                setCategorySaveError(null)
+              }}
+              className="text-xs transition-colors"
+              style={{ color: 'var(--text-secondary)' }}
+              onMouseEnter={(e) => ((e.currentTarget as HTMLElement).style.color = 'var(--text-primary)')}
+              onMouseLeave={(e) => ((e.currentTarget as HTMLElement).style.color = 'var(--text-secondary)')}
+            >
+              + Add category
+            </button>
           )}
         </div>
+      </div>
+    </div>
   )
 }

src/lib/tags.ts

@@ -130,6 +130,23 @@ export function getTags(categoryId?: string): Tag[] {
     .all() as Tag[]
 }
 
+export function getTagsSortedByUsage(categoryId?: string): Tag[] {
+  const db = getDb()
+  const where = categoryId ? 'WHERE t.category_id = ?' : ''
+  const params = categoryId ? [categoryId] : []
+  return db
+    .prepare(
+      `SELECT t.id, t.name, t.category_id as categoryId,
+              COUNT(mt.tag_id) as use_count
+       FROM tags t
+       LEFT JOIN media_tags mt ON mt.tag_id = t.id
+       ${where}
+       GROUP BY t.id
+       ORDER BY use_count DESC, t.name ASC`
+    )
+    .all(...params) as Tag[]
+}
+
 export function addTag(name: string, categoryId: string): Tag {
   const trimmed = name.trim()
   if (!trimmed) throw new Error('Tag name is required.')
@@ -223,6 +240,18 @@ export function getResolvedTagsForItem(mediaKey: string): { tags: Tag[]; categor
   return { tags, categories }
 }
 
+export function getTagAssignmentsForLibrary(libraryId: string): Record<string, string[]> {
+  const db = getDb()
+  const rows = db
+    .prepare('SELECT media_key, tag_id FROM media_tags WHERE media_key LIKE ?')
+    .all(`${libraryId}:%`) as { media_key: string; tag_id: string }[]
+  const result: Record<string, string[]> = {}
+  for (const row of rows) {
+    ;(result[row.media_key] ??= []).push(row.tag_id)
+  }
+  return result
+}
+
 export function removeAllAssignmentsForLibrary(libraryId: string): void {
   const db = getDb()
   db.prepare("DELETE FROM media_tags WHERE media_key LIKE ?").run(`${libraryId}:%`)