diff --git a/__tests__/dashboard.test.ts b/__tests__/dashboard.test.ts
new file mode 100644
index 0000000..bcf69e4
--- /dev/null
+++ b/__tests__/dashboard.test.ts
@@ -0,0 +1,293 @@
+import { getDashboardData, hasVisibleBlocks, DashboardNote, DashboardData } from '@/lib/dashboard'
+
+// Mock prisma and usage before importing dashboard module
+jest.mock('@/lib/prisma', () => ({
+  prisma: {
+    note: {
+      findMany: jest.fn(),
+    },
+  },
+}))
+
+jest.mock('@/lib/usage', () => ({
+  getRecentlyUsedNotes: jest.fn(),
+}))
+
+import { prisma } from '@/lib/prisma'
+import { getRecentlyUsedNotes } from '@/lib/usage'
+
+describe('dashboard.ts', () => {
+  const mockNotes = [
+    {
+      id: 'note-1',
+      title: 'Docker Commands',
+      content: 'docker build, docker run',
+      type: 'command',
+      isFavorite: true,
+      isPinned: false,
+      createdAt: new Date('2024-01-01'),
+      updatedAt: new Date('2024-01-15'),
+      tags: [{ tag: { id: 'tag-1', name: 'docker' } }],
+    },
+    {
+      id: 'note-2',
+      title: 'React Snippet',
+      content: 'useState usage',
+      type: 'snippet',
+      isFavorite: false,
+      isPinned: true,
+      createdAt: new Date('2024-01-02'),
+      updatedAt: new Date('2024-01-14'),
+      tags: [{ tag: { id: 'tag-2', name: 'react' } }],
+    },
+    {
+      id: 'note-3',
+      title: 'Git Commands',
+      content: 'git commit, git push',
+      type: 'command',
+      isFavorite: false,
+      isPinned: false,
+      createdAt: new Date('2024-01-03'),
+      updatedAt: new Date('2024-01-13'),
+      tags: [{ tag: { id: 'tag-3', name: 'git' } }],
+    },
+    {
+      id: 'note-4',
+      title: 'SQL Queries',
+      content: 'SELECT * FROM',
+      type: 'snippet',
+      isFavorite: true,
+      isPinned: true,
+      createdAt: new Date('2024-01-04'),
+      updatedAt: new Date('2024-01-12'),
+      tags: [{ tag: { id: 'tag-4', name: 'sql' } }],
+    },
+  ]
+
+  beforeEach(() => {
+    jest.clearAllMocks()
+  })
+
+  describe('getDashboardData', () => {
+    it('should return dashboard data with all sections', async () => {
+      ;(prisma.note.findMany as jest.Mock).mockResolvedValue(mockNotes)
+      ;(getRecentlyUsedNotes as jest.Mock).mockResolvedValue([
+        { noteId: 'note-1', count: 5, lastUsed: new Date() },
+        { noteId: 'note-2', count: 3, lastUsed: new Date() },
+      ])
+
+      const result = await getDashboardData(3)
+
+      expect(result).toHaveProperty('recentNotes')
+      expect(result).toHaveProperty('mostUsedNotes')
+      expect(result).toHaveProperty('recentCommands')
+      expect(result).toHaveProperty('recentSnippets')
+      expect(result).toHaveProperty('activityBasedNotes')
+      expect(result).toHaveProperty('hasActivity')
+    })
+
+    it('should return recent notes ordered by updatedAt', async () => {
+      ;(prisma.note.findMany as jest.Mock).mockResolvedValue(mockNotes)
+      ;(getRecentlyUsedNotes as jest.Mock).mockResolvedValue([])
+
+      const result = await getDashboardData(2)
+
+      expect(result.recentNotes).toHaveLength(2)
+      expect(result.recentNotes[0].id).toBe('note-1') // most recent
+      expect(result.recentNotes[1].id).toBe('note-2')
+    })
+
+    it('should return most used notes by usage count', async () => {
+      ;(prisma.note.findMany as jest.Mock).mockResolvedValue(mockNotes)
+      ;(getRecentlyUsedNotes as jest.Mock).mockResolvedValue([
+        { noteId: 'note-2', count: 10, lastUsed: new Date() },
+        { noteId: 'note-1', count: 5, lastUsed: new Date() },
+      ])
+
+      const result = await getDashboardData(3)
+
+      expect(result.mostUsedNotes).toHaveLength(2)
+      expect(result.mostUsedNotes[0].id).toBe('note-2') // highest usage
+      expect(result.mostUsedNotes[0].usageCount).toBe(10)
+    })
+
+    it('should return only command type notes for recentCommands', async () => {
+      ;(prisma.note.findMany as jest.Mock).mockResolvedValue(mockNotes)
+      ;(getRecentlyUsedNotes as jest.Mock).mockResolvedValue([])
+
+      const result = await getDashboardData(5)
+
+      expect(result.recentCommands).toHaveLength(2)
+      expect(result.recentCommands.every((n: DashboardNote) => n.type === 'command')).toBe(true)
+      expect(result.recentCommands[0].id).toBe('note-1')
+    })
+
+    it('should return only snippet type notes for recentSnippets', async () => {
+      ;(prisma.note.findMany as jest.Mock).mockResolvedValue(mockNotes)
+      ;(getRecentlyUsedNotes as jest.Mock).mockResolvedValue([])
+
+      const result = await getDashboardData(5)
+
+      expect(result.recentSnippets).toHaveLength(2)
+      expect(result.recentSnippets.every((n: DashboardNote) => n.type === 'snippet')).toBe(true)
+    })
+
+    it('should return activity based notes excluding recent notes', async () => {
+      // mockNotes are sorted by updatedAt desc: note-1, note-2, note-3, note-4
+      ;(prisma.note.findMany as jest.Mock).mockResolvedValue(mockNotes)
+      // note-4 is in recently used but will be filtered out since recentNotes has first 3
+      ;(getRecentlyUsedNotes as jest.Mock).mockResolvedValue([
+        { noteId: 'note-4', count: 5, lastUsed: new Date() },
+      ])
+
+      const result = await getDashboardData(3)
+
+      // note-4 is used but not in recentNotes (which contains note-1, note-2, note-3)
+      expect(result.activityBasedNotes).toHaveLength(1)
+      expect(result.activityBasedNotes[0].id).toBe('note-4')
+    })
+
+    it('should set hasActivity based on recently used notes', async () => {
+      ;(prisma.note.findMany as jest.Mock).mockResolvedValue(mockNotes)
+
+      ;(getRecentlyUsedNotes as jest.Mock).mockResolvedValue([
+        { noteId: 'note-1', count: 5, lastUsed: new Date() },
+      ])
+
+      const resultWithActivity = await getDashboardData(3)
+      expect(resultWithActivity.hasActivity).toBe(true)
+
+      ;(getRecentlyUsedNotes as jest.Mock).mockResolvedValue([])
+      const resultWithoutActivity = await getDashboardData(3)
+      expect(resultWithoutActivity.hasActivity).toBe(false)
+    })
+
+    it('should respect the limit parameter', async () => {
+      ;(prisma.note.findMany as jest.Mock).mockResolvedValue(mockNotes)
+      ;(getRecentlyUsedNotes as jest.Mock).mockResolvedValue([
+        { noteId: 'note-1', count: 10, lastUsed: new Date() },
+        { noteId: 'note-2', count: 8, lastUsed: new Date() },
+        { noteId: 'note-3', count: 6, lastUsed: new Date() },
+        { noteId: 'note-4', count: 4, lastUsed: new Date() },
+      ])
+
+      const result = await getDashboardData(2)
+
+      expect(result.recentNotes).toHaveLength(2)
+      expect(result.mostUsedNotes).toHaveLength(2)
+    })
+
+    it('should add usageCount to notes from usage map', async () => {
+      ;(prisma.note.findMany as jest.Mock).mockResolvedValue(mockNotes)
+      ;(getRecentlyUsedNotes as jest.Mock).mockResolvedValue([
+        { noteId: 'note-1', count: 10, lastUsed: new Date() },
+        { noteId: 'note-2', count: 5, lastUsed: new Date() },
+      ])
+
+      const result = await getDashboardData(3)
+
+      const note1 = result.mostUsedNotes.find((n: DashboardNote) => n.id === 'note-1')
+      const note2 = result.mostUsedNotes.find((n: DashboardNote) => n.id === 'note-2')
+      expect(note1?.usageCount).toBe(10)
+      expect(note2?.usageCount).toBe(5)
+    })
+
+    it('should return empty arrays when no notes exist', async () => {
+      ;(prisma.note.findMany as jest.Mock).mockResolvedValue([])
+      ;(getRecentlyUsedNotes as jest.Mock).mockResolvedValue([])
+
+      const result = await getDashboardData()
+
+      expect(result.recentNotes).toEqual([])
+      expect(result.mostUsedNotes).toEqual([])
+      expect(result.recentCommands).toEqual([])
+      expect(result.recentSnippets).toEqual([])
+      expect(result.activityBasedNotes).toEqual([])
+      expect(result.hasActivity).toBe(false)
+    })
+
+    it('should convert dates to ISO strings', async () => {
+      ;(prisma.note.findMany as jest.Mock).mockResolvedValue(mockNotes)
+      ;(getRecentlyUsedNotes as jest.Mock).mockResolvedValue([])
+
+      const result = await getDashboardData(1)
+
+      expect(result.recentNotes[0].createdAt).toBe('2024-01-01T00:00:00.000Z')
+      expect(result.recentNotes[0].updatedAt).toBe('2024-01-15T00:00:00.000Z')
+    })
+  })
+
+  describe('hasVisibleBlocks', () => {
+    it('should return true when recentNotes has items', () => {
+      const data: DashboardData = {
+        recentNotes: [{ id: '1', title: 'Test', content: '', type: 'note' as const, isFavorite: false, isPinned: false, createdAt: '', updatedAt: '', tags: [] }],
+        mostUsedNotes: [],
+        recentCommands: [],
+        recentSnippets: [],
+        activityBasedNotes: [],
+        hasActivity: false,
+      }
+      expect(hasVisibleBlocks(data)).toBe(true)
+    })
+
+    it('should return true when mostUsedNotes has items', () => {
+      const data: DashboardData = {
+        recentNotes: [],
+        mostUsedNotes: [{ id: '1', title: 'Test', content: '', type: 'note' as const, isFavorite: false, isPinned: false, createdAt: '', updatedAt: '', tags: [], usageCount: 5 }],
+        recentCommands: [],
+        recentSnippets: [],
+        activityBasedNotes: [],
+        hasActivity: false,
+      }
+      expect(hasVisibleBlocks(data)).toBe(true)
+    })
+
+    it('should return true when recentCommands has items', () => {
+      const data: DashboardData = {
+        recentNotes: [],
+        mostUsedNotes: [],
+        recentCommands: [{ id: '1', title: 'Test', content: '', type: 'command' as const, isFavorite: false, isPinned: false, createdAt: '', updatedAt: '', tags: [] }],
+        recentSnippets: [],
+        activityBasedNotes: [],
+        hasActivity: false,
+      }
+      expect(hasVisibleBlocks(data)).toBe(true)
+    })
+
+    it('should return true when recentSnippets has items', () => {
+      const data: DashboardData = {
+        recentNotes: [],
+        mostUsedNotes: [],
+        recentCommands: [],
+        recentSnippets: [{ id: '1', title: 'Test', content: '', type: 'snippet' as const, isFavorite: false, isPinned: false, createdAt: '', updatedAt: '', tags: [] }],
+        activityBasedNotes: [],
+        hasActivity: false,
+      }
+      expect(hasVisibleBlocks(data)).toBe(true)
+    })
+
+    it('should return true when activityBasedNotes has items', () => {
+      const data: DashboardData = {
+        recentNotes: [],
+        mostUsedNotes: [],
+        recentCommands: [],
+        recentSnippets: [],
+        activityBasedNotes: [{ id: '1', title: 'Test', content: '', type: 'note' as const, isFavorite: false, isPinned: false, createdAt: '', updatedAt: '', tags: [] }],
+        hasActivity: true,
+      }
+      expect(hasVisibleBlocks(data)).toBe(true)
+    })
+
+    it('should return false when all arrays are empty', () => {
+      const data: DashboardData = {
+        recentNotes: [],
+        mostUsedNotes: [],
+        recentCommands: [],
+        recentSnippets: [],
+        activityBasedNotes: [],
+        hasActivity: false,
+      }
+      expect(hasVisibleBlocks(data)).toBe(false)
+    })
+  })
+})
diff --git a/__tests__/related.test.ts b/__tests__/related.test.ts
new file mode 100644
index 0000000..fb1bbdd
--- /dev/null
+++ b/__tests__/related.test.ts
@@ -0,0 +1,246 @@
+import { getRelatedNotes } from '@/lib/related'
+
+// Mock prisma and usage before importing related module
+jest.mock('@/lib/prisma', () => ({
+  prisma: {
+    note: {
+      findUnique: jest.fn(),
+      findMany: jest.fn(),
+    },
+  },
+}))
+
+jest.mock('@/lib/usage', () => ({
+  getUsageStats: jest.fn(),
+}))
+
+import { prisma } from '@/lib/prisma'
+import { getUsageStats } from '@/lib/usage'
+
+describe('related.ts', () => {
+  const createMockNote = (overrides = {}) => ({
+    id: 'note-1',
+    title: 'Docker Commands',
+    content: 'docker build and docker run commands',
+    type: 'command',
+    isFavorite: false,
+    isPinned: false,
+    createdAt: new Date('2024-01-01'),
+    updatedAt: new Date('2024-01-15'),
+    tags: [
+      { tag: { id: 'tag-1', name: 'docker' } },
+      { tag: { id: 'tag-2', name: 'containers' } },
+    ],
+    ...overrides,
+  })
+
+  const createMockOtherNote = (overrides = {}) => ({
+    id: 'note-other',
+    title: 'Other Note Title',
+    content: 'other content xyz123',
+    type: 'snippet',
+    tags: [] as { tag: { id: string; name: string } }[],
+    ...overrides,
+  })
+
+  beforeEach(() => {
+    jest.clearAllMocks()
+    // Default usage stats - no usage
+    ;(getUsageStats as jest.Mock).mockResolvedValue({ views: 0, clicks: 0, relatedClicks: 0 })
+  })
+
+  describe('getRelatedNotes', () => {
+    it('should return empty array when note not found', async () => {
+      ;(prisma.note.findUnique as jest.Mock).mockResolvedValue(null)
+
+      const result = await getRelatedNotes('non-existent')
+
+      expect(result).toEqual([])
+    })
+
+    it('should return empty array when no related notes found', async () => {
+      ;(prisma.note.findUnique as jest.Mock).mockResolvedValue(createMockNote())
+      ;(prisma.note.findMany as jest.Mock).mockResolvedValue([
+        createMockOtherNote({ id: 'note-x', title: 'Completely Different', content: 'xyz abc def' }),
+      ])
+
+      const result = await getRelatedNotes('note-1')
+
+      expect(result).toEqual([])
+    })
+
+    it('should return related notes sorted by score', async () => {
+      const mockNote = createMockNote()
+      ;(prisma.note.findUnique as jest.Mock).mockResolvedValue(mockNote)
+      ;(prisma.note.findMany as jest.Mock).mockResolvedValue([
+        createMockOtherNote({ id: 'note-2', type: 'command', title: 'Docker Compose', tags: [{ tag: { id: 't1', name: 'docker' } }] }),
+        createMockOtherNote({ id: 'note-3', title: 'React Hooks', content: 'react hooks' }),
+      ])
+
+      const result = await getRelatedNotes('note-1')
+
+      expect(result.length).toBeGreaterThan(0)
+      // First result should have highest score
+      for (let i = 0; i < result.length - 1; i++) {
+        expect(result[i].score).toBeGreaterThanOrEqual(result[i + 1].score)
+      }
+    })
+
+    it('should give +3 for same type', async () => {
+      ;(prisma.note.findUnique as jest.Mock).mockResolvedValue(createMockNote())
+      ;(prisma.note.findMany as jest.Mock).mockResolvedValue([
+        createMockOtherNote({ id: 'note-2', type: 'command', title: 'XYZ', content: 'different' }),
+      ])
+
+      const result = await getRelatedNotes('note-1')
+
+      const note2 = result.find((n) => n.id === 'note-2')
+      expect(note2).toBeDefined()
+      expect(note2!.score).toBe(3) // only type match
+      expect(note2!.reason).toContain('Same type')
+    })
+
+    it('should give +3 per shared tag', async () => {
+      ;(prisma.note.findUnique as jest.Mock).mockResolvedValue(createMockNote())
+      ;(prisma.note.findMany as jest.Mock).mockResolvedValue([
+        createMockOtherNote({
+          id: 'note-2',
+          type: 'snippet', // different type to isolate tag scoring
+          title: 'XYZ Title',
+          content: 'different content',
+          tags: [
+            { tag: { id: 'tag-1', name: 'docker' } },
+            { tag: { id: 'tag-2', name: 'containers' } },
+          ],
+        }),
+      ])
+
+      const result = await getRelatedNotes('note-1')
+
+      const note2 = result.find((n) => n.id === 'note-2')
+      expect(note2).toBeDefined()
+      expect(note2!.score).toBe(6) // 2 tags * 3 = 6
+      expect(note2!.reason).toContain('Tags: docker, containers')
+    })
+
+    it('should cap title keyword boost at +3', async () => {
+      ;(prisma.note.findUnique as jest.Mock).mockResolvedValue(createMockNote({ title: 'Docker Kubernetes', content: 'different' }))
+      ;(prisma.note.findMany as jest.Mock).mockResolvedValue([
+        createMockOtherNote({
+          id: 'note-2',
+          type: 'snippet',
+          title: 'Docker Kubernetes Python Ruby', // 4 shared keywords but capped at 3
+          content: 'different',
+          tags: [],
+        }),
+      ])
+
+      const result = await getRelatedNotes('note-1')
+
+      const note2 = result.find((n) => n.id === 'note-2')
+      expect(note2).toBeDefined()
+      // Type mismatch = 0, Tags = 0, Title keywords capped at +3
+      expect(note2!.score).toBeLessThanOrEqual(3)
+    })
+
+    it('should cap content keyword boost at +2', async () => {
+      ;(prisma.note.findUnique as jest.Mock).mockResolvedValue(createMockNote({ title: 'Different', content: 'docker kubernetes python ruby' }))
+      ;(prisma.note.findMany as jest.Mock).mockResolvedValue([
+        createMockOtherNote({
+          id: 'note-2',
+          type: 'snippet',
+          title: 'Title',
+          content: 'docker kubernetes python', // 3 shared but capped at 2
+          tags: [],
+        }),
+      ])
+
+      const result = await getRelatedNotes('note-1')
+
+      const note2 = result.find((n) => n.id === 'note-2')
+      expect(note2).toBeDefined()
+    })
+
+    it('should add usage-based boost with view count', async () => {
+      ;(prisma.note.findUnique as jest.Mock).mockResolvedValue(createMockNote())
+      ;(prisma.note.findMany as jest.Mock).mockResolvedValue([
+        createMockOtherNote({ id: 'note-2', type: 'command', title: 'XYZ', content: 'different', tags: [] }),
+      ])
+      ;(getUsageStats as jest.Mock).mockResolvedValue({ views: 15, clicks: 0, relatedClicks: 0 })
+
+      const result = await getRelatedNotes('note-1')
+
+      const note2 = result.find((n) => n.id === 'note-2')
+      // Base: 3 (type) + floor(15/5)=3 + 2 (recency) = 8
+      expect(note2!.score).toBe(8)
+    })
+
+    it('should cap usage view boost at +3', async () => {
+      ;(prisma.note.findUnique as jest.Mock).mockResolvedValue(createMockNote())
+      ;(prisma.note.findMany as jest.Mock).mockResolvedValue([
+        createMockOtherNote({ id: 'note-2', type: 'command', title: 'XYZ', content: 'different', tags: [] }),
+      ])
+      ;(getUsageStats as jest.Mock).mockResolvedValue({ views: 50, clicks: 0, relatedClicks: 0 })
+
+      const result = await getRelatedNotes('note-1')
+
+      const note2 = result.find((n) => n.id === 'note-2')
+      // Base: 3 (type) + min(floor(50/5),3)=3 + 2 (recency) = 8
+      expect(note2!.score).toBe(8)
+    })
+
+    it('should add +2 recency boost when note has any views', async () => {
+      ;(prisma.note.findUnique as jest.Mock).mockResolvedValue(createMockNote())
+      ;(prisma.note.findMany as jest.Mock).mockResolvedValue([
+        createMockOtherNote({ id: 'note-2', type: 'command', title: 'XYZ', content: 'different', tags: [] }),
+      ])
+      ;(getUsageStats as jest.Mock).mockResolvedValue({ views: 5, clicks: 0, relatedClicks: 0 })
+
+      const result = await getRelatedNotes('note-1')
+
+      const note2 = result.find((n) => n.id === 'note-2')
+      // Base: 3 (type) + floor(5/5)=1 + 2 (recency) = 6
+      expect(note2!.score).toBe(6)
+    })
+
+    it('should use relatedClicks for recency boost', async () => {
+      ;(prisma.note.findUnique as jest.Mock).mockResolvedValue(createMockNote())
+      ;(prisma.note.findMany as jest.Mock).mockResolvedValue([
+        createMockOtherNote({ id: 'note-2', type: 'command', title: 'XYZ', content: 'different', tags: [] }),
+      ])
+      ;(getUsageStats as jest.Mock).mockResolvedValue({ views: 0, clicks: 0, relatedClicks: 3 })
+
+      const result = await getRelatedNotes('note-1')
+
+      const note2 = result.find((n) => n.id === 'note-2')
+      // Base: 3 (type) + 0 (views) + 2 (related clicks recency) = 5
+      expect(note2!.score).toBe(5)
+    })
+
+    it('should respect limit parameter', async () => {
+      ;(prisma.note.findUnique as jest.Mock).mockResolvedValue(createMockNote())
+      ;(prisma.note.findMany as jest.Mock).mockResolvedValue([
+        createMockOtherNote({ id: 'note-2', type: 'command', title: 'Docker', tags: [{ tag: { id: 't1', name: 'docker' } }] }),
+        createMockOtherNote({ id: 'note-3', type: 'command', title: 'Kubernetes', tags: [{ tag: { id: 't2', name: 'kubernetes' } }] }),
+        createMockOtherNote({ id: 'note-4', type: 'command', title: 'Git', tags: [{ tag: { id: 't3', name: 'git' } }] }),
+      ])
+
+      const result = await getRelatedNotes('note-1', 2)
+
+      expect(result).toHaveLength(2)
+    })
+
+    it('should include reason field', async () => {
+      ;(prisma.note.findUnique as jest.Mock).mockResolvedValue(createMockNote())
+      ;(prisma.note.findMany as jest.Mock).mockResolvedValue([
+        createMockOtherNote({ id: 'note-2', type: 'command', title: 'Docker', tags: [{ tag: { id: 't1', name: 'docker' } }] }),
+      ])
+
+      const result = await getRelatedNotes('note-1')
+
+      expect(result[0].reason).toBeDefined()
+      expect(typeof result[0].reason).toBe('string')
+      expect(result[0].reason.length).toBeGreaterThan(0)
+    })
+  })
+})
diff --git a/__tests__/search.test.ts b/__tests__/search.test.ts
index 9082cf4..df6bfef 100644
--- a/__tests__/search.test.ts
+++ b/__tests__/search.test.ts
@@ -1,15 +1,64 @@
-import { highlightMatches } from '@/lib/search'
+import { highlightMatches, noteQuery, searchNotes, ScoredNote } from '@/lib/search'
 
-// Mock prisma before importing search module
+// Mock prisma and usage before importing search module
 jest.mock('@/lib/prisma', () => ({
   prisma: {
     note: {
-      findMany: jest.fn().mockResolvedValue([]),
+      findMany: jest.fn(),
     },
   },
 }))
 
+jest.mock('@/lib/usage', () => ({
+  getUsageStats: jest.fn(),
+}))
+
+import { prisma } from '@/lib/prisma'
+import { getUsageStats } from '@/lib/usage'
+
 describe('search.ts', () => {
+  const mockNotes = [
+    {
+      id: 'note-1',
+      title: 'Docker Commands',
+      content: 'docker build and docker run',
+      type: 'command',
+      isFavorite: true,
+      isPinned: false,
+      createdAt: new Date('2024-01-01'),
+      updatedAt: new Date('2024-01-15'),
+      tags: [{ tag: { id: 'tag-1', name: 'docker' } }],
+    },
+    {
+      id: 'note-2',
+      title: 'React Hooks',
+      content: 'useState and useEffect hooks',
+      type: 'snippet',
+      isFavorite: false,
+      isPinned: true,
+      createdAt: new Date('2024-01-02'),
+      updatedAt: new Date('2024-01-10'),
+      tags: [{ tag: { id: 'tag-2', name: 'react' } }],
+    },
+    {
+      id: 'note-3',
+      title: 'Git Commands',
+      content: 'git commit and git push',
+      type: 'command',
+      isFavorite: false,
+      isPinned: false,
+      createdAt: new Date('2024-01-03'),
+      updatedAt: new Date('2024-01-05'),
+      tags: [{ tag: { id: 'tag-3', name: 'git' } }],
+    },
+  ]
+
+  beforeEach(() => {
+    jest.clearAllMocks()
+    // Default: no usage
+    ;(getUsageStats as jest.Mock).mockResolvedValue({ views: 0, clicks: 0, relatedClicks: 0 })
+  })
+
   describe('highlightMatches', () => {
     it('returns first 150 characters when query is empty', () => {
       const text = 'This is a long text that should be truncated to 150 characters. ' +
@@ -40,7 +89,6 @@ describe('search.ts', () => {
     it('adds ellipsis when match is not at start', () => {
       const text = 'Lorem ipsum dolor sit amet, consectetur adipiscing elit. JavaScript is great.'
       const result = highlightMatches(text, 'JavaScript')
-      // JavaScript is at position 61, start is max(0, 61-75) = 0, so no ellipsis needed
       expect(result).toContain('<mark>JavaScript</mark>')
     })
 
@@ -56,8 +104,197 @@ describe('search.ts', () => {
       // Single char words (A, B, C) are filtered, returns 150 chars
       expect(result.length).toBeLessThanOrEqual(150)
     })
+
+    it('adds ellipsis when match is far from start', () => {
+      // JavaScript is at position ~26, start = max(0, 26-75) = 0, so no ellipsis needed
+      // We need a longer text where match is more than 75 chars from start
+      const text = 'Lorem ipsum dolor sit amet. '.repeat(10) + 'JavaScript programming language.'
+      const result = highlightMatches(text, 'JavaScript')
+      expect(result).toContain('...')
+    })
   })
 
-  // Integration tests would go here but require database setup
-  // These would test noteQuery and searchNotes with actual data
+  describe('noteQuery', () => {
+    it('returns empty array when no notes exist', async () => {
+      ;(prisma.note.findMany as jest.Mock).mockResolvedValue([])
+
+      const result = await noteQuery('docker')
+
+      expect(result).toEqual([])
+    })
+
+    it('returns notes with exact title match scored highest', async () => {
+      ;(prisma.note.findMany as jest.Mock).mockResolvedValue(mockNotes)
+
+      const result = await noteQuery('docker')
+
+      expect(result[0].id).toBe('note-1') // exact title match
+      expect(result[0].matchType).toBe('exact')
+    })
+
+    it('returns notes with content match', async () => {
+      ;(prisma.note.findMany as jest.Mock).mockResolvedValue(mockNotes)
+
+      const result = await noteQuery('hooks')
+
+      expect(result.length).toBeGreaterThan(0)
+      expect(result.some((n: ScoredNote) => n.id === 'note-2')).toBe(true)
+    })
+
+    it('returns fuzzy matches when no exact match', async () => {
+      ;(prisma.note.findMany as jest.Mock).mockResolvedValue(mockNotes)
+
+      const result = await noteQuery('docer') // typo
+
+      expect(result.length).toBeGreaterThan(0)
+      expect(result[0].matchType).toBe('fuzzy')
+    })
+
+    it('excludes notes with no match (low similarity)', async () => {
+      ;(prisma.note.findMany as jest.Mock).mockResolvedValue(mockNotes)
+
+      const result = await noteQuery('xyz123nonexistent')
+
+      expect(result.length).toBe(0)
+    })
+
+    it('adds +2 for favorite notes', async () => {
+      ;(prisma.note.findMany as jest.Mock).mockResolvedValue(mockNotes)
+
+      const result = await noteQuery('docker')
+
+      // note-1 is favorite, should have higher score
+      const dockerNote = result.find((n: ScoredNote) => n.id === 'note-1')
+      expect(dockerNote?.isFavorite).toBe(true)
+    })
+
+    it('adds +1 for pinned notes', async () => {
+      ;(prisma.note.findMany as jest.Mock).mockResolvedValue(mockNotes)
+
+      const result = await noteQuery('hooks')
+
+      // note-2 is pinned
+      const hooksNote = result.find((n: ScoredNote) => n.id === 'note-2')
+      expect(hooksNote?.isPinned).toBe(true)
+    })
+
+    it('adds +1 for recently updated notes (within 7 days)', async () => {
+      const recentNote = {
+        ...mockNotes[0],
+        updatedAt: new Date(Date.now() - 1000), // just now
+      }
+      ;(prisma.note.findMany as jest.Mock).mockResolvedValue([recentNote])
+
+      const result = await noteQuery('docker')
+
+      expect(result[0].score).toBeGreaterThan(0)
+    })
+
+    it('filters by type when specified', async () => {
+      ;(prisma.note.findMany as jest.Mock).mockResolvedValue(mockNotes)
+
+      const result = await noteQuery('', { type: 'command' })
+
+      expect(result.every((n: ScoredNote) => n.type === 'command')).toBe(true)
+    })
+
+    it('filters by tag when specified', async () => {
+      ;(prisma.note.findMany as jest.Mock).mockResolvedValue(mockNotes)
+
+      const result = await noteQuery('', { tag: 'docker' })
+
+      expect(result.length).toBe(1)
+      expect(result[0].id).toBe('note-1')
+    })
+
+    it('returns notes sorted by score descending', async () => {
+      ;(prisma.note.findMany as jest.Mock).mockResolvedValue(mockNotes)
+
+      const result = await noteQuery('')
+
+      for (let i = 0; i < result.length - 1; i++) {
+        expect(result[i].score).toBeGreaterThanOrEqual(result[i + 1].score)
+      }
+    })
+
+    it('returns highlight excerpt for matched notes', async () => {
+      ;(prisma.note.findMany as jest.Mock).mockResolvedValue(mockNotes)
+
+      const result = await noteQuery('docker')
+
+      expect(result[0].highlight).toBeDefined()
+      expect(typeof result[0].highlight).toBe('string')
+    })
+  })
+
+  describe('searchNotes', () => {
+    it('should be an alias for noteQuery', async () => {
+      ;(prisma.note.findMany as jest.Mock).mockResolvedValue(mockNotes)
+
+      const result = await searchNotes('docker')
+
+      expect(result).toEqual(await noteQuery('docker'))
+    })
+
+    it('passes filters to noteQuery', async () => {
+      ;(prisma.note.findMany as jest.Mock).mockResolvedValue(mockNotes)
+
+      const result = await searchNotes('', { type: 'snippet' })
+
+      expect(result.every((n: ScoredNote) => n.type === 'snippet')).toBe(true)
+    })
+  })
+
+  describe('usage-based scoring boost', () => {
+    it('calls getUsageStats for each note', async () => {
+      ;(prisma.note.findMany as jest.Mock).mockResolvedValue([mockNotes[0]])
+      ;(getUsageStats as jest.Mock).mockResolvedValue({ views: 0, clicks: 0, relatedClicks: 0 })
+
+      await noteQuery('docker')
+
+      expect(getUsageStats).toHaveBeenCalledWith('note-1', 7)
+    })
+
+    it('handles getUsageStats returning zero values', async () => {
+      ;(prisma.note.findMany as jest.Mock).mockResolvedValue([mockNotes[0]])
+      ;(getUsageStats as jest.Mock).mockResolvedValue({ views: 0, clicks: 0, relatedClicks: 0 })
+
+      const result = await noteQuery('docker')
+
+      // Should return results without error
+      expect(result).toBeDefined()
+      expect(result.length).toBeGreaterThan(0)
+    })
+  })
+
+  describe('ScoredNote interface', () => {
+    it('returns correct structure for scored notes', async () => {
+      ;(prisma.note.findMany as jest.Mock).mockResolvedValue([mockNotes[0]])
+
+      const result = await noteQuery('docker')
+
+      expect(result[0]).toHaveProperty('id')
+      expect(result[0]).toHaveProperty('title')
+      expect(result[0]).toHaveProperty('content')
+      expect(result[0]).toHaveProperty('type')
+      expect(result[0]).toHaveProperty('isFavorite')
+      expect(result[0]).toHaveProperty('isPinned')
+      expect(result[0]).toHaveProperty('createdAt')
+      expect(result[0]).toHaveProperty('updatedAt')
+      expect(result[0]).toHaveProperty('tags')
+      expect(result[0]).toHaveProperty('score')
+      expect(result[0]).toHaveProperty('highlight')
+      expect(result[0]).toHaveProperty('matchType')
+      expect(['exact', 'fuzzy']).toContain(result[0].matchType)
+    })
+
+    it('converts Date objects to ISO strings', async () => {
+      ;(prisma.note.findMany as jest.Mock).mockResolvedValue([mockNotes[0]])
+
+      const result = await noteQuery('docker')
+
+      expect(result[0].createdAt).toBe('2024-01-01T00:00:00.000Z')
+      expect(result[0].updatedAt).toBe('2024-01-15T00:00:00.000Z')
+    })
+  })
 })
diff --git a/__tests__/usage.test.ts b/__tests__/usage.test.ts
new file mode 100644
index 0000000..8ae2baa
--- /dev/null
+++ b/__tests__/usage.test.ts
@@ -0,0 +1,223 @@
+import { trackNoteUsage, getNoteUsageCount, getRecentlyUsedNotes, getUsageStats, UsageEventType } from '@/lib/usage'
+
+// Mock prisma before importing usage module
+jest.mock('@/lib/prisma', () => ({
+  prisma: {
+    noteUsage: {
+      create: jest.fn(),
+      count: jest.fn(),
+      groupBy: jest.fn(),
+    },
+    note: {
+      findMany: jest.fn(),
+    },
+  },
+}))
+
+import { prisma } from '@/lib/prisma'
+
+describe('usage.ts', () => {
+  beforeEach(() => {
+    jest.clearAllMocks()
+  })
+
+  describe('trackNoteUsage', () => {
+    it('should create a usage event with all fields', async () => {
+      ;(prisma.noteUsage.create as jest.Mock).mockResolvedValue({ id: '1' })
+
+      await trackNoteUsage({
+        noteId: 'note-1',
+        eventType: 'view',
+        query: 'docker commands',
+        metadata: { source: 'search' },
+      })
+
+      expect(prisma.noteUsage.create).toHaveBeenCalledWith({
+        data: {
+          noteId: 'note-1',
+          eventType: 'view',
+          query: 'docker commands',
+          metadata: JSON.stringify({ source: 'search' }),
+        },
+      })
+    })
+
+    it('should create a usage event without optional fields', async () => {
+      ;(prisma.noteUsage.create as jest.Mock).mockResolvedValue({ id: '1' })
+
+      await trackNoteUsage({
+        noteId: 'note-1',
+        eventType: 'view',
+      })
+
+      expect(prisma.noteUsage.create).toHaveBeenCalledWith({
+        data: {
+          noteId: 'note-1',
+          eventType: 'view',
+          query: null,
+          metadata: null,
+        },
+      })
+    })
+
+    it('should silently fail on database error', async () => {
+      ;(prisma.noteUsage.create as jest.Mock).mockRejectedValue(new Error('DB error'))
+
+      // Should not throw
+      await expect(
+        trackNoteUsage({ noteId: 'note-1', eventType: 'view' })
+      ).resolves.not.toThrow()
+    })
+  })
+
+  describe('getNoteUsageCount', () => {
+    it('should return count for a specific note', async () => {
+      ;(prisma.noteUsage.count as jest.Mock).mockResolvedValue(5)
+
+      const result = await getNoteUsageCount('note-1')
+
+      expect(result).toBe(5)
+      expect(prisma.noteUsage.count).toHaveBeenCalledWith({
+        where: expect.objectContaining({ noteId: 'note-1' }),
+      })
+    })
+
+    it('should filter by event type when specified', async () => {
+      ;(prisma.noteUsage.count as jest.Mock).mockResolvedValue(3)
+
+      const result = await getNoteUsageCount('note-1', 'search_click')
+
+      expect(result).toBe(3)
+      expect(prisma.noteUsage.count).toHaveBeenCalledWith({
+        where: expect.objectContaining({
+          noteId: 'note-1',
+          eventType: 'search_click',
+        }),
+      })
+    })
+
+    it('should apply default 30 days filter', async () => {
+      ;(prisma.noteUsage.count as jest.Mock).mockResolvedValue(0)
+
+      await getNoteUsageCount('note-1')
+
+      const call = (prisma.noteUsage.count as jest.Mock).mock.calls[0][0]
+      expect(call.where.createdAt.gte).toBeInstanceOf(Date)
+    })
+
+    it('should return 0 on database error', async () => {
+      ;(prisma.noteUsage.count as jest.Mock).mockRejectedValue(new Error('DB error'))
+
+      const result = await getNoteUsageCount('note-1')
+
+      expect(result).toBe(0)
+    })
+  })
+
+  describe('getRecentlyUsedNotes', () => {
+    it('should return recently used notes with counts', async () => {
+      const mockGroupBy = [
+        { noteId: 'note-1', _count: { id: 10 } },
+        { noteId: 'note-2', _count: { id: 5 } },
+      ]
+      ;(prisma.noteUsage.groupBy as jest.Mock).mockResolvedValue(mockGroupBy)
+      ;(prisma.note.findMany as jest.Mock).mockResolvedValue([
+        { id: 'note-1', updatedAt: new Date('2024-01-15') },
+        { id: 'note-2', updatedAt: new Date('2024-01-14') },
+      ])
+
+      const result = await getRecentlyUsedNotes('user-1', 10, 30)
+
+      expect(result).toHaveLength(2)
+      expect(result[0]).toEqual({
+        noteId: 'note-1',
+        count: 10,
+        lastUsed: expect.any(Date),
+      })
+    })
+
+    it('should return empty array on database error', async () => {
+      ;(prisma.noteUsage.groupBy as jest.Mock).mockRejectedValue(new Error('DB error'))
+
+      const result = await getRecentlyUsedNotes('user-1')
+
+      expect(result).toEqual([])
+    })
+
+    it('should respect limit parameter', async () => {
+      ;(prisma.noteUsage.groupBy as jest.Mock).mockResolvedValue([])
+      ;(prisma.note.findMany as jest.Mock).mockResolvedValue([])
+
+      await getRecentlyUsedNotes('user-1', 5)
+
+      expect(prisma.noteUsage.groupBy).toHaveBeenCalledWith(
+        expect.objectContaining({ take: 5 })
+      )
+    })
+  })
+
+  describe('getUsageStats', () => {
+    it('should return usage stats for a note', async () => {
+      ;(prisma.noteUsage.count as jest.Mock)
+        .mockResolvedValueOnce(15) // views
+        .mockResolvedValueOnce(8) // clicks
+        .mockResolvedValueOnce(3) // relatedClicks
+
+      const result = await getUsageStats('note-1', 30)
+
+      expect(result).toEqual({
+        views: 15,
+        clicks: 8,
+        relatedClicks: 3,
+      })
+    })
+
+    it('should return zeros on database error', async () => {
+      ;(prisma.noteUsage.count as jest.Mock).mockRejectedValue(new Error('DB error'))
+
+      const result = await getUsageStats('note-1')
+
+      expect(result).toEqual({
+        views: 0,
+        clicks: 0,
+        relatedClicks: 0,
+      })
+    })
+
+    it('should query with correct date filter', async () => {
+      ;(prisma.noteUsage.count as jest.Mock).mockResolvedValue(0)
+
+      await getUsageStats('note-1', 7)
+
+      // All three counts should use the same date filter
+      for (const call of (prisma.noteUsage.count as jest.Mock).mock.calls) {
+        expect(call[0].where.createdAt.gte).toBeInstanceOf(Date)
+      }
+    })
+
+    it('should return zeros when any count fails', async () => {
+      // Promise.all will reject on first failure, so we can't get partial results
+      ;(prisma.noteUsage.count as jest.Mock)
+        .mockResolvedValueOnce(10) // views
+        .mockRejectedValueOnce(new Error('DB error')) // clicks fails
+        .mockResolvedValueOnce(5) // relatedClicks never called
+
+      const result = await getUsageStats('note-1')
+
+      // All zeros because the whole operation fails
+      expect(result.views).toBe(0)
+      expect(result.clicks).toBe(0)
+      expect(result.relatedClicks).toBe(0)
+    })
+  })
+
+  describe('UsageEventType', () => {
+    it('should accept all valid event types', () => {
+      const eventTypes: UsageEventType[] = ['view', 'search_click', 'related_click', 'link_click']
+
+      eventTypes.forEach((eventType) => {
+        expect(['view', 'search_click', 'related_click', 'link_click']).toContain(eventType)
+      })
+    })
+  })
+})
diff --git a/backlog/recall-mvp3-tickets-claude-code.md b/backlog/recall-mvp3-tickets-claude-code.md
new file mode 100644
index 0000000..fc1f2a3
--- /dev/null
+++ b/backlog/recall-mvp3-tickets-claude-code.md
@@ -0,0 +1,581 @@
+# Recall — Tickets técnicos MVP-3 para Claude Code
+
+## Objetivo general
+Convertir Recall en una herramienta indispensable de uso diario, enfocada en:
+- recuperación pasiva
+- ranking basado en uso real
+- sugerencias automáticas
+- mapa de conocimiento simple
+- reducción adicional de fricción en captura
+
+---
+
+# EPIC 1 — Dashboard y uso diario
+
+## [P1] Ticket 01 — Rediseñar dashboard para valor inmediato
+
+**Objetivo**  
+Hacer que la pantalla inicial devuelva valor sin necesidad de buscar.
+
+**Contexto**  
+Recall ya soporta búsqueda avanzada, quick add, backlinks, notas relacionadas, tags y UX especializada por tipo. El siguiente paso es que el home priorice descubrimiento y reutilización.
+
+**Alcance**
+- Reemplazar dashboard actual por bloques orientados a uso:
+  - notas recientes
+  - notas más usadas
+  - comandos recientes
+  - snippets recientes
+  - sugerencias relacionadas a la actividad reciente
+- Crear endpoint o función de agregación para dashboard
+- Ordenar visualmente por relevancia, no solo por fecha
+
+**No incluye**
+- métricas históricas avanzadas
+- personalización por usuario
+
+**Criterios de aceptación**
+- Al abrir `/`, se ven al menos 4 bloques útiles
+- “Más usadas” no depende solo de `updatedAt`
+- Los bloques no rompen con base vacía
+- El dashboard responde correctamente con 0, pocas o muchas notas
+
+**Archivos sugeridos**
+- `src/app/page.tsx`
+- `src/components/dashboard.tsx`
+- `src/lib/dashboard.ts`
+- `src/app/api/dashboard/route.ts` (opcional)
+
+**Notas técnicas**
+- Reutilizar scoring y modelos existentes
+- Mantener SSR o server components donde tenga sentido
+
+---
+
+## [P1] Ticket 02 — Registrar eventos de uso de notas
+
+**Objetivo**  
+Capturar señales reales de uso para mejorar ranking y sugerencias.
+
+**Alcance**
+- Crear modelo de uso o contador agregado
+- Registrar eventos mínimos:
+  - apertura de nota
+  - copia de comando
+  - copia de snippet
+  - uso desde quick add relacionado
+- Exponer utilidades para incrementar métricas
+
+**No incluye**
+- tracking externo
+- analytics de terceros
+
+**Criterios de aceptación**
+- Abrir una nota incrementa su contador de uso
+- Copiar contenido especializado suma señal adicional
+- La captura falla de forma segura sin romper la UI
+- Se puede consultar el uso agregado por nota
+
+**Archivos sugeridos**
+- `prisma/schema.prisma`
+- `src/lib/usage.ts`
+- `src/app/api/notes/[id]/usage/route.ts`
+- `src/components/note-card.tsx`
+- `src/components/markdown-content.tsx`
+
+**Notas técnicas**
+- Preferir modelo simple:
+  - `NoteUsage` por evento o
+  - campos agregados en `Note`
+- Si eliges eventos, agregar tarea/helper de agregación futura
+
+---
+
+## [P1] Ticket 03 — Mostrar “según tu actividad reciente”
+
+**Objetivo**  
+Crear recuperación pasiva basada en uso reciente.
+
+**Alcance**
+- Detectar últimas notas abiertas/usadas
+- Sugerir notas relacionadas en dashboard
+- Crear bloque “Según tu actividad reciente”
+
+**Criterios de aceptación**
+- Si hay actividad reciente, aparecen sugerencias relevantes
+- Si no hay actividad, el bloque se oculta o usa fallback
+- El bloque muestra por qué se recomienda una nota
+
+**Archivos sugeridos**
+- `src/lib/dashboard.ts`
+- `src/components/dashboard.tsx`
+- `src/lib/related.ts`
+- `src/lib/usage.ts`
+
+---
+
+# EPIC 2 — Ranking inteligente y recuperación pasiva
+
+## [P1] Ticket 04 — Extender scoring con señales de uso real
+
+**Objetivo**  
+Mejorar la relevancia de búsqueda y recomendaciones con comportamiento real.
+
+**Alcance**
+- Extender `search.ts` y/o `related.ts` para incluir:
+  - cantidad de aperturas
+  - copias
+  - recencia de uso
+  - frecuencia de uso
+- Ajustar pesos de scoring
+
+**No incluye**
+- machine learning
+- embeddings
+
+**Criterios de aceptación**
+- Una nota muy usada sube en empates razonables
+- El ranking sigue priorizando match textual fuerte
+- El score es explicable y testeable
+
+**Archivos sugeridos**
+- `src/lib/search.ts`
+- `src/lib/related.ts`
+- `src/lib/usage.ts`
+- `__tests__/search.test.ts`
+- `__tests__/related.test.ts`
+
+**Notas técnicas**
+- No permitir que uso alto eclipse resultados textualmente irrelevantes
+- Mantener scoring determinístico
+
+---
+
+## [P1] Ticket 05 — Crear recomendaciones pasivas en detalle de nota
+
+**Objetivo**  
+Que una nota devuelva otras útiles sin necesidad de nueva búsqueda.
+
+**Alcance**
+- En vista de detalle agregar bloque:
+  - “También podrías necesitar”
+- Basar sugerencias en:
+  - backlinks
+  - related score
+  - uso conjunto
+  - tags compartidos
+
+**Criterios de aceptación**
+- El bloque aparece en detalle de nota
+- Muestra entre 3 y 6 sugerencias
+- Muestra razón resumida de recomendación
+- Excluye nota actual y duplicados
+
+**Archivos sugeridos**
+- `src/app/notes/[id]/page.tsx`
+- `src/components/related-notes.tsx`
+- `src/lib/recommendations.ts`
+
+---
+
+## [P2] Ticket 06 — Registrar co-uso entre notas
+
+**Objetivo**  
+Detectar notas que suelen usarse juntas.
+
+**Alcance**
+- Al abrir una nota, registrar relación con notas abiertas recientemente
+- Generar señal de co-uso
+- Exponer helper para recomendar “suelen usarse juntas”
+
+**Criterios de aceptación**
+- El sistema puede devolver notas co-usadas
+- No hay duplicados ni relaciones simétricas inconsistentes
+- La implementación escala razonablemente para dataset pequeño/medio
+
+**Archivos sugeridos**
+- `prisma/schema.prisma`
+- `src/lib/co-usage.ts`
+- `src/lib/recommendations.ts`
+
+---
+
+# EPIC 3 — Sugerencias automáticas y enriquecimiento
+
+## [P1] Ticket 07 — Sugerir tags automáticamente al escribir
+
+**Objetivo**  
+Reducir esfuerzo manual en clasificación.
+
+**Alcance**
+- Analizar título y contenido del formulario
+- Sugerir tags existentes según:
+  - coincidencias de términos
+  - frecuencia histórica
+  - tipo de nota
+- Mostrar sugerencias no invasivas
+
+**Criterios de aceptación**
+- Al escribir contenido aparecen sugerencias útiles
+- El usuario puede aceptar o ignorar sugerencias
+- No se agregan tags automáticamente sin acción del usuario
+- Funciona con debounce
+
+**Archivos sugeridos**
+- `src/app/api/tags/suggest/route.ts`
+- `src/lib/tags.ts`
+- `src/components/note-form.tsx`
+
+**Notas técnicas**
+- Priorizar tags existentes para evitar proliferación innecesaria
+
+---
+
+## [P2] Ticket 08 — Sugerir tipo de nota automáticamente
+
+**Objetivo**  
+Acelerar creación cuando el usuario pega contenido ambiguo.
+
+**Alcance**
+- Detectar patrones de contenido para sugerir tipo:
+  - bloque de código → `snippet`
+  - comando shell → `command`
+  - lista de pasos → `procedure`
+  - ingredientes/pasos → `recipe`
+  - contexto/decisión → `decision`
+- Mostrar recomendación editable
+
+**Criterios de aceptación**
+- El formulario propone un tipo probable
+- El usuario puede mantener o cambiar el tipo
+- No sobrescribe tipo si el usuario ya eligió uno manualmente
+
+**Archivos sugeridos**
+- `src/lib/type-inference.ts`
+- `src/components/note-form.tsx`
+- `__tests__/type-inference.test.ts`
+
+---
+
+## [P2] Ticket 09 — Sugerir links internos mientras se escribe
+
+**Objetivo**  
+Fortalecer la red de conocimiento sin depender de memoria del usuario.
+
+**Alcance**
+- Analizar contenido y detectar posibles referencias a notas existentes
+- Sugerir convertir términos en `[[nota]]`
+- Permitir inserción con un click
+
+**Criterios de aceptación**
+- El sistema detecta coincidencias plausibles con títulos existentes
+- El usuario puede insertar el link sugerido
+- No genera links automáticos sin confirmación
+
+**Archivos sugeridos**
+- `src/lib/backlinks.ts`
+- `src/lib/link-suggestions.ts`
+- `src/components/note-form.tsx`
+
+---
+
+# EPIC 4 — Mapa de conocimiento simple
+
+## [P1] Ticket 10 — Crear panel “Conectado con”
+
+**Objetivo**  
+Dar una vista de contexto inmediata sin construir un grafo complejo.
+
+**Alcance**
+- En detalle de nota, agregar panel lateral o bloque:
+  - backlinks
+  - links salientes
+  - relacionadas
+  - co-usadas
+- Agrupar visualmente cada tipo de relación
+
+**Criterios de aceptación**
+- La nota muestra claramente su red local
+- Se distinguen tipos de conexión
+- Los enlaces navegan correctamente
+- Con 0 conexiones el bloque no se rompe
+
+**Archivos sugeridos**
+- `src/app/notes/[id]/page.tsx`
+- `src/components/note-connections.tsx`
+- `src/lib/backlinks.ts`
+- `src/lib/related.ts`
+- `src/lib/recommendations.ts`
+
+---
+
+## [P2] Ticket 11 — Identificar notas centrales
+
+**Objetivo**  
+Detectar nodos importantes del conocimiento personal.
+
+**Alcance**
+- Calcular una métrica simple de centralidad usando:
+  - backlinks
+  - links salientes
+  - uso
+  - co-uso
+- Mostrar bloque “Notas centrales” en dashboard
+
+**Criterios de aceptación**
+- El dashboard muestra las notas más centrales
+- La métrica está documentada y es reproducible
+- Los resultados cambian al aumentar conexiones reales
+
+**Archivos sugeridos**
+- `src/lib/centrality.ts`
+- `src/lib/dashboard.ts`
+- `src/components/dashboard.tsx`
+- `__tests__/centrality.test.ts`
+
+---
+
+# EPIC 5 — Captura aún más rápida
+
+## [P1] Ticket 12 — Mejorar Quick Add para texto multilinea
+
+**Objetivo**  
+Permitir capturar cosas más complejas sin abrir el formulario completo.
+
+**Alcance**
+- Soportar textarea o modo expandido en `quick-add`
+- Mantener parseo de prefijos y tags
+- Permitir pegar bloques de texto/código/listas
+
+**Criterios de aceptación**
+- Se puede guardar una nota multilinea desde quick add
+- El parser mantiene tags y tipo correctamente
+- No rompe el flujo actual de una sola línea
+
+**Archivos sugeridos**
+- `src/components/quick-add.tsx`
+- `src/lib/quick-add.ts`
+- `src/app/api/notes/quick/route.ts`
+
+---
+
+## [P2] Ticket 13 — Pegado inteligente en Quick Add y formulario
+
+**Objetivo**  
+Inferir estructura útil cuando el usuario pega contenido.
+
+**Alcance**
+- Detectar si el pegado parece:
+  - comando
+  - snippet
+  - checklist
+  - markdown
+- Preformatear el contenido para mejor guardado
+- Ofrecer sugerencia de tipo o plantilla
+
+**Criterios de aceptación**
+- Pegar código sugiere `snippet`
+- Pegar checklist preserva formato
+- Pegar comando corto no destruye el flujo rápido
+
+**Archivos sugeridos**
+- `src/lib/paste-analysis.ts`
+- `src/components/quick-add.tsx`
+- `src/components/note-form.tsx`
+
+---
+
+# EPIC 6 — Métricas y observabilidad de producto
+
+## [P2] Ticket 14 — Crear métricas internas simples
+
+**Objetivo**  
+Medir qué partes del producto generan valor real.
+
+**Alcance**
+- Crear panel o función para obtener:
+  - notas más abiertas
+  - tipos más usados
+  - tags más usados
+  - quick add vs formulario
+- Exponer datos al dashboard o settings
+
+**Criterios de aceptación**
+- Las métricas se calculan sin servicios externos
+- Se pueden consultar desde UI
+- No impactan negativamente el rendimiento percibido
+
+**Archivos sugeridos**
+- `src/lib/metrics.ts`
+- `src/app/settings/page.tsx` o `src/app/page.tsx`
+- `src/app/api/metrics/route.ts`
+
+---
+
+## [P2] Ticket 15 — Instrumentar origen de creación de nota
+
+**Objetivo**  
+Saber qué flujo usan más los usuarios.
+
+**Alcance**
+- Registrar si la nota se creó desde:
+  - quick add
+  - formulario completo
+  - importación
+- Guardar origen de creación
+- Exponerlo en métricas
+
+**Criterios de aceptación**
+- Cada nota nueva guarda su origen
+- Las métricas muestran distribución por origen
+- No rompe notas existentes
+
+**Archivos sugeridos**
+- `prisma/schema.prisma`
+- `src/app/api/notes/route.ts`
+- `src/app/api/notes/quick/route.ts`
+- `src/app/api/export-import/route.ts`
+- `src/lib/metrics.ts`
+
+---
+
+# EPIC 7 — Calidad y estabilidad
+
+## [P1] Ticket 16 — Tests unitarios para ranking y recomendaciones MVP-3
+
+**Objetivo**  
+Proteger la lógica nueva antes de seguir iterando.
+
+**Alcance**
+- Tests para:
+  - `usage.ts`
+  - `dashboard.ts`
+  - `recommendations.ts`
+  - `type-inference.ts`
+  - `centrality.ts`
+
+**Criterios de aceptación**
+- Casos felices y bordes cubiertos
+- Tests reproducibles con datos determinísticos
+- Los pesos de scoring quedan documentados por test
+
+---
+
+## [P1] Ticket 17 — Tests de integración para dashboard y usage tracking
+
+**Objetivo**  
+Validar flujos reales del MVP-3.
+
+**Alcance**
+- Probar:
+  - apertura/uso de nota
+  - dashboard enriquecido
+  - recomendaciones
+  - métricas base
+
+**Criterios de aceptación**
+- Existen seeds o fixtures simples
+- Los endpoints responden con estructura consistente
+- No hay regresiones en APIs existentes
+
+---
+
+## [P2] Ticket 18 — Feature flags internas para MVP-3
+
+**Objetivo**  
+Introducir features progresivamente sin romper experiencia principal.
+
+**Alcance**
+- Crear configuración simple para activar/desactivar:
+  - centralidad
+  - recomendaciones pasivas
+  - sugerencias de tipo
+  - sugerencias de links
+- Leer flags desde config local o env
+
+**Criterios de aceptación**
+- Cada feature nueva puede apagarse sin romper la app
+- Los componentes respetan flags en servidor y cliente
+
+**Archivos sugeridos**
+- `src/lib/features.ts`
+- `src/app/layout.tsx`
+- componentes afectados
+
+---
+
+# Orden recomendado de implementación
+
+## Sprint 1
+- Ticket 02 — Registrar eventos de uso de notas
+- Ticket 04 — Extender scoring con señales de uso real
+- Ticket 01 — Rediseñar dashboard para valor inmediato
+- Ticket 03 — Mostrar “según tu actividad reciente”
+- Ticket 16 — Tests unitarios MVP-3 base
+
+## Sprint 2
+- Ticket 05 — Recomendaciones pasivas en detalle
+- Ticket 07 — Sugerir tags automáticamente
+- Ticket 10 — Panel “Conectado con”
+- Ticket 17 — Tests de integración
+
+## Sprint 3
+- Ticket 12 — Quick Add multilinea
+- Ticket 13 — Pegado inteligente
+- Ticket 08 — Sugerir tipo automáticamente
+- Ticket 09 — Sugerir links internos
+
+## Sprint 4
+- Ticket 06 — Registrar co-uso
+- Ticket 11 — Identificar notas centrales
+- Ticket 14 — Métricas internas simples
+- Ticket 15 — Origen de creación
+- Ticket 18 — Feature flags internas
+
+---
+
+# Plantilla sugerida para cada issue en Claude Code
+
+## Título
+`[P1] Registrar eventos de uso de notas`
+
+## Contexto
+Recall ya cuenta con CRUD, búsqueda con scoring, quick add, backlinks, relaciones y tests. Ahora se necesita capturar señales reales de uso para mejorar ranking y recomendaciones.
+
+## Objetivo
+Registrar aperturas y acciones clave sobre notas para alimentar el dashboard, la recuperación pasiva y el ranking inteligente.
+
+## Alcance
+- modelo o estructura de persistencia
+- utilidades de registro
+- integración mínima con UI y/o endpoints
+- tests asociados
+
+## No incluye
+- analytics de terceros
+- tracking publicitario
+- panel complejo de observabilidad
+
+## Criterios de aceptación
+- ...
+- ...
+- ...
+
+## Archivos a tocar
+- ...
+- ...
+
+## Notas técnicas
+- mantener compatibilidad con Prisma + SQLite
+- implementación segura ante fallos
+- no romper experiencia actual
+
+---
+
+# Definición de Done
+
+- Código implementado y tipado
+- Tests pasando
+- Sin regresiones en CRUD/búsqueda/quick add
+- UI usable en estados vacío, normal y borde
+- Lógica desacoplada en `lib/`
diff --git a/prisma/schema.prisma b/prisma/schema.prisma
index bbc27a1..73bde07 100644
--- a/prisma/schema.prisma
+++ b/prisma/schema.prisma
@@ -19,6 +19,7 @@ model Note {
   tags       NoteTag[]
   backlinks  Backlink[] @relation("BacklinkTarget")
   outbound   Backlink[] @relation("BacklinkSource")
+  usageEvents NoteUsage[]
 }
 
 model Tag {
@@ -46,3 +47,16 @@ model Backlink {
 
   @@unique([sourceNoteId, targetNoteId])
 }
+
+model NoteUsage {
+  id        String   @id @default(cuid())
+  noteId    String
+  note      Note     @relation(fields: [noteId], references: [id], onDelete: Cascade)
+  eventType String   // 'view' | 'search_click' | 'related_click' | 'link_click'
+  query     String?
+  metadata  String?
+  createdAt DateTime @default(now())
+
+  @@index([noteId, createdAt])
+  @@index([eventType, createdAt])
+}
diff --git a/src/app/api/usage/route.ts b/src/app/api/usage/route.ts
new file mode 100644
index 0000000..99e8631
--- /dev/null
+++ b/src/app/api/usage/route.ts
@@ -0,0 +1,30 @@
+import { NextRequest } from 'next/server'
+import { createErrorResponse, createSuccessResponse } from '@/lib/errors'
+import { trackNoteUsage, type UsageEventType } from '@/lib/usage'
+
+export async function POST(req: NextRequest) {
+  try {
+    const body = await req.json()
+    const { noteId, eventType, query, metadata } = body
+
+    if (!noteId || !eventType) {
+      return createErrorResponse(new Error('noteId and eventType are required'))
+    }
+
+    const validEventTypes: UsageEventType[] = ['view', 'search_click', 'related_click', 'link_click']
+    if (!validEventTypes.includes(eventType)) {
+      return createErrorResponse(new Error('Invalid eventType'))
+    }
+
+    await trackNoteUsage({
+      noteId,
+      eventType,
+      query,
+      metadata,
+    })
+
+    return createSuccessResponse({ success: true })
+  } catch (error) {
+    return createErrorResponse(error)
+  }
+}
diff --git a/src/app/notes/[id]/page.tsx b/src/app/notes/[id]/page.tsx
index 4137274..1e404c7 100644
--- a/src/app/notes/[id]/page.tsx
+++ b/src/app/notes/[id]/page.tsx
@@ -4,6 +4,7 @@ import { RelatedNotes } from '@/components/related-notes'
 import { getRelatedNotes } from '@/lib/related'
 import { MarkdownContent } from '@/components/markdown-content'
 import { DeleteNoteButton } from '@/components/delete-note-button'
+import { TrackNoteView } from '@/components/track-note-view'
 import Link from 'next/link'
 import { Button } from '@/components/ui/button'
 import { Badge } from '@/components/ui/badge'
@@ -35,6 +36,8 @@ export default async function NoteDetailPage({ params }: { params: Promise<{ id:
   const noteType = note.type as NoteType
 
   return (
+    <>
+      <TrackNoteView noteId={note.id} />
     <main className="container mx-auto py-8 px-4 max-w-4xl">
       <div className="mb-6">
         <Link href="/notes">
@@ -82,12 +85,17 @@ export default async function NoteDetailPage({ params }: { params: Promise<{ id:
       )}
 
       <div className="mb-8">
-        <MarkdownContent content={note.content} className="bg-gray-50 p-4 rounded-lg border" />
+        <MarkdownContent
+          content={note.content}
+          noteType={noteType}
+          className="bg-gray-50 p-4 rounded-lg border"
+        />
       </div>
 
       {related.length > 0 && (
         <RelatedNotes notes={related} />
       )}
     </main>
+    </>
   )
 }
\ No newline at end of file
diff --git a/src/app/page.tsx b/src/app/page.tsx
index 6900476..a9b0719 100644
--- a/src/app/page.tsx
+++ b/src/app/page.tsx
@@ -1,37 +1,19 @@
-import { prisma } from '@/lib/prisma'
 import { Dashboard } from '@/components/dashboard'
-import { NoteType } from '@/types/note'
-
-async function getNotes() {
-  const notes = await prisma.note.findMany({
-    include: { tags: { include: { tag: true } } },
-    orderBy: { updatedAt: 'desc' },
-  })
-  return notes
-}
+import { getDashboardData } from '@/lib/dashboard'
 
 export default async function HomePage() {
-  const allNotes = await getNotes()
-
-  const notesWithTags = allNotes.map(note => ({
-    ...note,
-    createdAt: note.createdAt.toISOString(),
-    updatedAt: note.updatedAt.toISOString(),
-    type: note.type as NoteType,
-    tags: note.tags.map(nt => ({ tag: nt.tag })),
-  }))
-
-  const recentNotes = notesWithTags.slice(0, 6)
-  const favoriteNotes = notesWithTags.filter(n => n.isFavorite)
-  const pinnedNotes = notesWithTags.filter(n => n.isPinned)
+  const data = await getDashboardData(6)
 
   return (
     <main className="container mx-auto pt-8 px-4">
       <Dashboard
-        recentNotes={recentNotes}
-        favoriteNotes={favoriteNotes}
-        pinnedNotes={pinnedNotes}
+        recentNotes={data.recentNotes}
+        mostUsedNotes={data.mostUsedNotes}
+        recentCommands={data.recentCommands}
+        recentSnippets={data.recentSnippets}
+        activityBasedNotes={data.activityBasedNotes}
+        hasActivity={data.hasActivity}
       />
     </main>
   )
-}
\ No newline at end of file
+}
diff --git a/src/components/dashboard.tsx b/src/components/dashboard.tsx
index 6bba4b1..6d7ba30 100644
--- a/src/components/dashboard.tsx
+++ b/src/components/dashboard.tsx
@@ -5,13 +5,25 @@ import { Note } from '@/types/note'
 import { NoteList } from './note-list'
 import { Button } from '@/components/ui/button'
 import { SearchBar } from './search-bar'
-import { ArrowRight } from 'lucide-react'
+import { ArrowRight, TrendingUp, Terminal, Code, Zap } from 'lucide-react'
 
-export function Dashboard({ recentNotes, favoriteNotes, pinnedNotes }: {
+interface DashboardProps {
   recentNotes: Note[]
-  favoriteNotes: Note[]
-  pinnedNotes: Note[]
-}) {
+  mostUsedNotes: Note[]
+  recentCommands: Note[]
+  recentSnippets: Note[]
+  activityBasedNotes: Note[]
+  hasActivity: boolean
+}
+
+export function Dashboard({
+  recentNotes,
+  mostUsedNotes,
+  recentCommands,
+  recentSnippets,
+  activityBasedNotes,
+  hasActivity,
+}: DashboardProps) {
   return (
     <>
       <div className="flex justify-end mb-3">
@@ -19,27 +31,12 @@ export function Dashboard({ recentNotes, favoriteNotes, pinnedNotes }: {
       </div>
       <div className="space-y-8">
 
-      {pinnedNotes.length > 0 && (
-        <section>
-          <h2 className="text-xl font-semibold mb-3 flex items-center gap-2">
-            📌 Pineadas
-          </h2>
-          <NoteList notes={pinnedNotes} />
-        </section>
-      )}
-
-      {favoriteNotes.length > 0 && (
-        <section>
-          <h2 className="text-xl font-semibold mb-3 flex items-center gap-2">
-            ❤️ Favoritas
-          </h2>
-          <NoteList notes={favoriteNotes} />
-        </section>
-      )}
-
+      {/* Recientes */}
       <section>
         <div className="flex items-center justify-between mb-3">
-          <h2 className="text-xl font-semibold">Recientes</h2>
+          <h2 className="text-xl font-semibold flex items-center gap-2">
+            <span>Recientes</span>
+          </h2>
           <Link href="/notes">
             <Button variant="ghost" size="sm" className="gap-1">
               Ver todas <ArrowRight className="h-4 w-4" />
@@ -49,15 +46,89 @@ export function Dashboard({ recentNotes, favoriteNotes, pinnedNotes }: {
         {recentNotes.length > 0 ? (
           <NoteList notes={recentNotes} />
         ) : (
-          <div className="text-center py-8 text-gray-500">
-            <p>No hay notas todavía.</p>
-            <Link href="/new">
-              <Button className="mt-4">Crea tu primera nota</Button>
-            </Link>
-          </div>
+          <EmptyState />
         )}
       </section>
+
+      {/* Más usadas */}
+      {mostUsedNotes.length > 0 && (
+        <section>
+          <div className="flex items-center justify-between mb-3">
+            <h2 className="text-xl font-semibold flex items-center gap-2">
+              <TrendingUp className="h-5 w-5 text-orange-500" />
+              <span>Más usadas</span>
+            </h2>
+            <Link href="/notes">
+              <Button variant="ghost" size="sm" className="gap-1">
+                Ver todas <ArrowRight className="h-4 w-4" />
+              </Button>
+            </Link>
+          </div>
+          <NoteList notes={mostUsedNotes} />
+        </section>
+      )}
+
+      {/* Comandos recientes */}
+      {recentCommands.length > 0 && (
+        <section>
+          <div className="flex items-center justify-between mb-3">
+            <h2 className="text-xl font-semibold flex items-center gap-2">
+              <Terminal className="h-5 w-5 text-green-500" />
+              <span>Comandos recientes</span>
+            </h2>
+            <Link href="/notes?type=command">
+              <Button variant="ghost" size="sm" className="gap-1">
+                Ver todas <ArrowRight className="h-4 w-4" />
+              </Button>
+            </Link>
+          </div>
+          <NoteList notes={recentCommands} />
+        </section>
+      )}
+
+      {/* Snippets recientes */}
+      {recentSnippets.length > 0 && (
+        <section>
+          <div className="flex items-center justify-between mb-3">
+            <h2 className="text-xl font-semibold flex items-center gap-2">
+              <Code className="h-5 w-5 text-blue-500" />
+              <span>Snippets recientes</span>
+            </h2>
+            <Link href="/notes?type=snippet">
+              <Button variant="ghost" size="sm" className="gap-1">
+                Ver todas <ArrowRight className="h-4 w-4" />
+              </Button>
+            </Link>
+          </div>
+          <NoteList notes={recentSnippets} />
+        </section>
+      )}
+
+      {/* Según tu actividad */}
+      {hasActivity && activityBasedNotes.length > 0 && (
+        <section>
+          <div className="flex items-center justify-between mb-3">
+            <h2 className="text-xl font-semibold flex items-center gap-2">
+              <Zap className="h-5 w-5 text-purple-500" />
+              <span>Según tu actividad</span>
+            </h2>
+          </div>
+          <NoteList notes={activityBasedNotes} />
+        </section>
+      )}
+
     </div>
     </>
   )
-}
\ No newline at end of file
+}
+
+function EmptyState() {
+  return (
+    <div className="text-center py-8 text-gray-500">
+      <p>No hay notas todavía.</p>
+      <Link href="/new">
+        <Button className="mt-4">Crea tu primera nota</Button>
+      </Link>
+    </div>
+  )
+}
diff --git a/src/components/markdown-content.tsx b/src/components/markdown-content.tsx
index 3ff4b3f..0124efd 100644
--- a/src/components/markdown-content.tsx
+++ b/src/components/markdown-content.tsx
@@ -8,19 +8,24 @@ import { NoteType } from '@/types/note'
 import { Copy, Check } from 'lucide-react'
 import { useState } from 'react'
 import { cn } from '@/lib/utils'
+import { trackNoteUsage } from '@/lib/usage'
 
 interface MarkdownContentProps {
   content: string
   className?: string
   noteType?: NoteType
+  noteId?: string
 }
 
-function CopyButton({ text }: { text: string }) {
+function CopyButton({ text, noteId, eventType }: { text: string; noteId?: string; eventType?: 'copy_command' | 'copy_snippet' }) {
   const [copied, setCopied] = useState(false)
 
   const handleCopy = async () => {
     await navigator.clipboard.writeText(text)
     setCopied(true)
+    if (noteId && eventType) {
+      trackNoteUsage({ noteId, eventType })
+    }
     setTimeout(() => setCopied(false), 2000)
   }
 
@@ -88,7 +93,7 @@ function ProcedureCheckboxes({ content }: { content: string }) {
   )
 }
 
-export function MarkdownContent({ content, className = '', noteType }: MarkdownContentProps) {
+export function MarkdownContent({ content, className = '', noteType, noteId }: MarkdownContentProps) {
   if (noteType === 'procedure') {
     return (
       <div className={cn("prose max-w-none", className)}>
@@ -118,7 +123,7 @@ export function MarkdownContent({ content, className = '', noteType }: MarkdownC
                   >
                     {codeString}
                   </SyntaxHighlighter>
-                  <CopyButton text={codeString} />
+                  <CopyButton text={codeString} noteId={noteId} eventType="copy_snippet" />
                 </div>
               )
             }
@@ -134,7 +139,7 @@ export function MarkdownContent({ content, className = '', noteType }: MarkdownC
                   >
                     {codeString}
                   </SyntaxHighlighter>
-                  <CopyButton text={codeString} />
+                  <CopyButton text={codeString} noteId={noteId} eventType="copy_command" />
                 </div>
               )
             }
@@ -157,7 +162,7 @@ export function MarkdownContent({ content, className = '', noteType }: MarkdownC
                 >
                   {codeString}
                 </SyntaxHighlighter>
-                <CopyButton text={codeString} />
+                <CopyButton text={codeString} noteId={noteId} eventType="copy_snippet" />
               </div>
             )
           },
diff --git a/src/components/track-note-view.tsx b/src/components/track-note-view.tsx
new file mode 100644
index 0000000..cc4f739
--- /dev/null
+++ b/src/components/track-note-view.tsx
@@ -0,0 +1,12 @@
+'use client'
+
+import { useEffect } from 'react'
+import { addToRecentlyViewed } from '@/lib/usage'
+
+export function TrackNoteView({ noteId }: { noteId: string }) {
+  useEffect(() => {
+    addToRecentlyViewed(noteId)
+  }, [noteId])
+
+  return null
+}
diff --git a/src/lib/dashboard.ts b/src/lib/dashboard.ts
new file mode 100644
index 0000000..9b71b77
--- /dev/null
+++ b/src/lib/dashboard.ts
@@ -0,0 +1,103 @@
+import { prisma } from '@/lib/prisma'
+import { getRecentlyUsedNotes } from '@/lib/usage'
+import { NoteType } from '@/types/note'
+
+export interface DashboardNote {
+  id: string
+  title: string
+  content: string
+  type: NoteType
+  isFavorite: boolean
+  isPinned: boolean
+  createdAt: string
+  updatedAt: string
+  tags: { tag: { id: string; name: string } }[]
+  usageCount?: number
+}
+
+export interface DashboardData {
+  recentNotes: DashboardNote[]
+  mostUsedNotes: DashboardNote[]
+  recentCommands: DashboardNote[]
+  recentSnippets: DashboardNote[]
+  activityBasedNotes: DashboardNote[]
+  hasActivity: boolean
+}
+
+export async function getDashboardData(limit = 6): Promise<DashboardData> {
+  // Get all notes with tags
+  const allNotes = await prisma.note.findMany({
+    include: { tags: { include: { tag: true } } },
+    orderBy: { updatedAt: 'desc' },
+  })
+
+  const notesWithTags: DashboardNote[] = allNotes.map((note) => ({
+    id: note.id,
+    title: note.title,
+    content: note.content,
+    type: note.type as NoteType,
+    isFavorite: note.isFavorite,
+    isPinned: note.isPinned,
+    createdAt: note.createdAt.toISOString(),
+    updatedAt: note.updatedAt.toISOString(),
+    tags: note.tags.map((nt) => ({ tag: nt.tag })),
+  }))
+
+  // Get usage data
+  const recentlyUsed = await getRecentlyUsedNotes('default', limit * 2, 30)
+  const usageMap = new Map(recentlyUsed.map((u) => [u.noteId, u.count]))
+
+  // Add usage count to notes
+  const notesWithUsage = notesWithTags.map((note) => ({
+    ...note,
+    usageCount: usageMap.get(note.id) ?? 0,
+  }))
+
+  // Recent notes (by updatedAt)
+  const recentNotes = notesWithTags.slice(0, limit)
+
+  // Most used notes (by usage count, not just updatedAt)
+  const mostUsedNotes = [...notesWithUsage]
+    .filter((n) => n.usageCount > 0)
+    .sort((a, b) => b.usageCount - a.usageCount)
+    .slice(0, limit)
+
+  // Recent commands (type = command)
+  const recentCommands = notesWithTags
+    .filter((n) => n.type === 'command')
+    .slice(0, limit)
+
+  // Recent snippets (type = snippet)
+  const recentSnippets = notesWithTags
+    .filter((n) => n.type === 'snippet')
+    .slice(0, limit)
+
+  // Activity-based recommendations (recently used, excluding already viewed recently)
+  const recentNoteIds = new Set(recentNotes.map((n) => n.id))
+  const activityBasedNotes = recentlyUsed
+    .filter((u) => !recentNoteIds.has(u.noteId))
+    .slice(0, limit)
+    .map((u) => notesWithTags.find((n) => n.id === u.noteId))
+    .filter((n): n is DashboardNote => n !== undefined)
+
+  const hasActivity = recentlyUsed.length > 0
+
+  return {
+    recentNotes,
+    mostUsedNotes,
+    recentCommands,
+    recentSnippets,
+    activityBasedNotes,
+    hasActivity,
+  }
+}
+
+export function hasVisibleBlocks(data: DashboardData): boolean {
+  return (
+    data.recentNotes.length > 0 ||
+    data.mostUsedNotes.length > 0 ||
+    data.recentCommands.length > 0 ||
+    data.recentSnippets.length > 0 ||
+    data.activityBasedNotes.length > 0
+  )
+}
diff --git a/src/lib/related.ts b/src/lib/related.ts
index 9ab2c4d..3323ce6 100644
--- a/src/lib/related.ts
+++ b/src/lib/related.ts
@@ -1,4 +1,5 @@
 import { prisma } from '@/lib/prisma'
+import { getUsageStats } from '@/lib/usage'
 
 // Stop words to filter out from content matching (English + Spanish)
 const STOP_WORDS = new Set([
@@ -141,6 +142,16 @@ export async function getRelatedNotes(noteId: string, limit = 5): Promise<Scored
       reasons.push(`Content: ${sharedContentWords.slice(0, 2).join(', ')}`)
     }
 
+    // Usage-based boost (small, does not eclipse content matching)
+    // +1 per 5 views (max +3), +2 if used recently (recency)
+    const usageStats = await getUsageStats(other.id, 7) // last 7 days for recency
+    const viewBoost = Math.min(Math.floor(usageStats.views / 5), 3)
+    score += viewBoost
+    // Recency: if used in last 7 days, add +2
+    if (usageStats.views >= 1 || usageStats.relatedClicks >= 1) {
+      score += 2
+    }
+
     // Solo incluir si tiene score > 0 Y al menos una razón válida
     if (score > 0 && reasons.length > 0) {
       scored.push({
diff --git a/src/lib/search.ts b/src/lib/search.ts
index 255cf8d..ce063a4 100644
--- a/src/lib/search.ts
+++ b/src/lib/search.ts
@@ -1,5 +1,6 @@
 import { prisma } from '@/lib/prisma'
 import stringSimilarity from 'string-similarity'
+import { getUsageStats } from '@/lib/usage'
 
 export interface SearchFilters {
   type?: string
@@ -65,7 +66,7 @@ function escapeRegex(str: string): string {
   return str.replace(/[.*+?^${}()|[\]\\]/g, '\\$&')
 }
 
-function scoreNote(
+async function scoreNote(
   note: {
     id: string
     title: string
@@ -79,7 +80,7 @@ function scoreNote(
   },
   query: string,
   exactTitleMatch: boolean
-): { score: number; matchType: 'exact' | 'fuzzy' } {
+): Promise<{ score: number; matchType: 'exact' | 'fuzzy' }> {
   let score = 0
   let matchType: 'exact' | 'fuzzy' = 'exact'
   const queryLower = query.toLowerCase()
@@ -118,6 +119,16 @@ function scoreNote(
     score += 1
   }
 
+  // Usage-based boost (small, does not eclipse text match)
+  // +1 per 5 views (max +3), +2 if used recently (recency)
+  const usageStats = await getUsageStats(note.id, 7) // last 7 days for recency
+  const viewBoost = Math.min(Math.floor(usageStats.views / 5), 3)
+  score += viewBoost
+  // Recency: if used in last 2 days, add +2
+  if (usageStats.views >= 1 || usageStats.clicks >= 1) {
+    score += 2
+  }
+
   return { score, matchType }
 }
 
@@ -166,7 +177,7 @@ export async function noteQuery(
       }
     }
 
-    const { score, matchType } = scoreNote(note, queryLower, exactTitleMatch || exactContentMatch)
+    const { score, matchType } = await scoreNote(note, queryLower, exactTitleMatch || exactContentMatch)
 
     const highlight = highlightMatches(
       exactTitleMatch ? note.title + ' ' + note.content : note.content,
diff --git a/src/lib/usage.ts b/src/lib/usage.ts
new file mode 100644
index 0000000..c1cb073
--- /dev/null
+++ b/src/lib/usage.ts
@@ -0,0 +1,138 @@
+import { prisma } from '@/lib/prisma'
+
+export type UsageEventType = 'view' | 'search_click' | 'related_click' | 'link_click' | 'copy_command' | 'copy_snippet'
+
+interface UsageEvent {
+  noteId: string
+  eventType: UsageEventType
+  query?: string
+  metadata?: Record<string, unknown>
+}
+
+export async function trackNoteUsage(event: UsageEvent): Promise<void> {
+  try {
+    await prisma.noteUsage.create({
+      data: {
+        noteId: event.noteId,
+        eventType: event.eventType,
+        query: event.query ?? null,
+        metadata: event.metadata ? JSON.stringify(event.metadata) : null,
+      },
+    })
+  } catch {
+    // Silently fail - do not break UI
+  }
+}
+
+export async function getNoteUsageCount(
+  noteId: string,
+  eventType?: UsageEventType,
+  days = 30
+): Promise<number> {
+  try {
+    const where: { noteId: string; createdAt: { gte: Date }; eventType?: string } = {
+      noteId,
+      createdAt: {
+        gte: new Date(Date.now() - days * 24 * 60 * 60 * 1000),
+      },
+    }
+    if (eventType) {
+      where.eventType = eventType
+    }
+    return await prisma.noteUsage.count({ where })
+  } catch {
+    return 0
+  }
+}
+
+export async function getRecentlyUsedNotes(
+  userId: string,
+  limit = 10,
+  days = 30
+): Promise<{ noteId: string; count: number; lastUsed: Date }[]> {
+  try {
+    const since = new Date(Date.now() - days * 24 * 60 * 60 * 1000)
+    const results = await prisma.noteUsage.groupBy({
+      by: ['noteId'],
+      where: {
+        createdAt: { gte: since },
+      },
+      _count: { id: true },
+      orderBy: { _count: { id: 'desc' } },
+      take: limit,
+    })
+
+    const noteIds = results.map((r) => r.noteId)
+    const notes = await prisma.note.findMany({
+      where: { id: { in: noteIds } },
+      select: { id: true, updatedAt: true },
+    })
+    const noteMap = new Map(notes.map((n) => [n.id, n]))
+
+    return results.map((r) => ({
+      noteId: r.noteId,
+      count: r._count.id,
+      lastUsed: noteMap.get(r.noteId)?.updatedAt ?? new Date(),
+    }))
+  } catch {
+    return []
+  }
+}
+
+export async function getUsageStats(
+  noteId: string,
+  days = 30
+): Promise<{ views: number; clicks: number; relatedClicks: number }> {
+  try {
+    const since = new Date(Date.now() - days * 24 * 60 * 60 * 1000)
+    const [views, clicks, relatedClicks] = await Promise.all([
+      prisma.noteUsage.count({
+        where: { noteId, eventType: 'view', createdAt: { gte: since } },
+      }),
+      prisma.noteUsage.count({
+        where: { noteId, eventType: 'search_click', createdAt: { gte: since } },
+      }),
+      prisma.noteUsage.count({
+        where: { noteId, eventType: 'related_click', createdAt: { gte: since } },
+      }),
+    ])
+    return { views, clicks, relatedClicks }
+  } catch {
+    return { views: 0, clicks: 0, relatedClicks: 0 }
+  }
+}
+
+// localStorage recentlyViewed (last 10 notes)
+const RECENTLY_VIEWED_KEY = 'recall_recently_viewed'
+const MAX_RECENTLY_VIEWED = 10
+
+export function getRecentlyViewedIds(): string[] {
+  if (typeof window === 'undefined') return []
+  try {
+    const stored = localStorage.getItem(RECENTLY_VIEWED_KEY)
+    return stored ? JSON.parse(stored) : []
+  } catch {
+    return []
+  }
+}
+
+export function addToRecentlyViewed(noteId: string): void {
+  if (typeof window === 'undefined') return
+  try {
+    const recent = getRecentlyViewedIds()
+    const filtered = recent.filter(id => id !== noteId)
+    const updated = [noteId, ...filtered].slice(0, MAX_RECENTLY_VIEWED)
+    localStorage.setItem(RECENTLY_VIEWED_KEY, JSON.stringify(updated))
+  } catch {
+    // Silently fail
+  }
+}
+
+export function clearRecentlyViewed(): void {
+  if (typeof window === 'undefined') return
+  try {
+    localStorage.removeItem(RECENTLY_VIEWED_KEY)
+  } catch {
+    // Silently fail
+  }
+}