feat: integrate daily challenges, codex recording, and unlock triggers

- Add DailyMode/DailyDate fields to GameSession; use daily seed for floor generation
- Add [D] Daily Challenge button in lobby for solo daily sessions
- Record codex entries for monsters and shop items during gameplay
- Trigger unlock checks (fifth_class, hard_mode, mutations) on game over
- Trigger title checks (novice, explorer, veteran, champion, gold_king) on game over
- Save daily records on game over for daily mode sessions
- Add daily leaderboard tab with Tab key cycling in leaderboard view

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

game/session.go

@@ -84,6 +84,8 @@ type GameSession struct {
 	lastActivity   map[string]time.Time // fingerprint -> last activity time
 	HardMode       bool
 	ActiveMutation *Mutation
+	DailyMode      bool
+	DailyDate      string
 }
 
 type playerActionMsg struct {
@@ -210,7 +212,12 @@ func (s *GameSession) AddPlayer(p *entity.Player) {
 func (s *GameSession) StartFloor() {
 	s.mu.Lock()
 	defer s.mu.Unlock()
-	s.state.Floor = dungeon.GenerateFloor(s.state.FloorNum, rand.New(rand.NewSource(time.Now().UnixNano())))
+	if s.DailyMode {
+		seed := DailySeed(s.DailyDate) + int64(s.state.FloorNum)
+		s.state.Floor = dungeon.GenerateFloor(s.state.FloorNum, rand.New(rand.NewSource(seed)))
+	} else {
+		s.state.Floor = dungeon.GenerateFloor(s.state.FloorNum, rand.New(rand.NewSource(time.Now().UnixNano())))
+	}
 	s.state.Phase = PhaseExploring
 	s.state.TurnNum = 0
 

game/turn.go

@@ -373,7 +373,12 @@ func (s *GameSession) advanceFloor() {
 		p.Skills.Points++
 	}
 	s.state.FloorNum++
-	s.state.Floor = dungeon.GenerateFloor(s.state.FloorNum, rand.New(rand.NewSource(time.Now().UnixNano())))
+	if s.DailyMode {
+		seed := DailySeed(s.DailyDate) + int64(s.state.FloorNum)
+		s.state.Floor = dungeon.GenerateFloor(s.state.FloorNum, rand.New(rand.NewSource(seed)))
+	} else {
+		s.state.Floor = dungeon.GenerateFloor(s.state.FloorNum, rand.New(rand.NewSource(time.Now().UnixNano())))
+	}
 	s.state.Phase = PhaseExploring
 	s.state.CombatTurn = 0
 	s.addLog(fmt.Sprintf("Descending to B%d...", s.state.FloorNum))

ui/game_view.go

@@ -10,20 +10,25 @@ import (
 	"github.com/tolelom/catacombs/dungeon"
 	"github.com/tolelom/catacombs/entity"
 	"github.com/tolelom/catacombs/game"
+	"github.com/tolelom/catacombs/store"
 )
 
 // GameScreen handles the main gameplay: exploration, combat, and chat.
 type GameScreen struct {
-	gameState    game.GameState
-	targetCursor int
-	moveCursor   int
-	chatting     bool
-	chatInput    string
-	rankingSaved bool
+	gameState     game.GameState
+	targetCursor  int
+	moveCursor    int
+	chatting      bool
+	chatInput     string
+	rankingSaved  bool
+	codexRecorded map[string]bool
+	prevPhase     game.GamePhase
 }
 
 func NewGameScreen() *GameScreen {
-	return &GameScreen{}
+	return &GameScreen{
+		codexRecorded: make(map[string]bool),
+	}
 }
 
 func (s *GameScreen) pollState() tea.Cmd {
@@ -58,6 +63,30 @@ func (s *GameScreen) Update(msg tea.Msg, ctx *Context) (Screen, tea.Cmd) {
 		} else {
 			s.targetCursor = 0
 		}
+
+		// Record codex entries for monsters when entering combat
+		if ctx.Store != nil && s.gameState.Phase == game.PhaseCombat {
+			for _, m := range s.gameState.Monsters {
+				key := "monster:" + m.Name
+				if !s.codexRecorded[key] {
+					ctx.Store.RecordCodexEntry(ctx.Fingerprint, "monster", m.Name)
+					s.codexRecorded[key] = true
+				}
+			}
+		}
+
+		// Record codex entries for shop items when entering shop
+		if ctx.Store != nil && s.gameState.Phase == game.PhaseShop && s.prevPhase != game.PhaseShop {
+			for _, item := range s.gameState.ShopItems {
+				key := "item:" + item.Name
+				if !s.codexRecorded[key] {
+					ctx.Store.RecordCodexEntry(ctx.Fingerprint, "item", item.Name)
+					s.codexRecorded[key] = true
+				}
+			}
+		}
+
+		s.prevPhase = s.gameState.Phase
 	}
 
 	if s.gameState.GameOver {
@@ -104,6 +133,54 @@ func (s *GameScreen) Update(msg tea.Msg, ctx *Context) (Screen, tea.Cmd) {
 			if len(s.gameState.Players) >= 4 {
 				ctx.Store.UnlockAchievement(ctx.PlayerName, "full_party")
 			}
+
+			// Unlock triggers
+			if s.gameState.FloorNum >= 10 {
+				ctx.Store.UnlockContent(ctx.Fingerprint, "fifth_class")
+			}
+			if len(s.gameState.Players) >= 3 && s.gameState.FloorNum >= 5 {
+				ctx.Store.UnlockContent(ctx.Fingerprint, "hard_mode")
+			}
+			if s.gameState.Victory {
+				ctx.Store.UnlockContent(ctx.Fingerprint, "mutations")
+			}
+
+			// Title triggers
+			ctx.Store.EarnTitle(ctx.Fingerprint, "novice")
+			if s.gameState.FloorNum >= 5 {
+				ctx.Store.EarnTitle(ctx.Fingerprint, "explorer")
+			}
+			if s.gameState.FloorNum >= 10 {
+				ctx.Store.EarnTitle(ctx.Fingerprint, "veteran")
+			}
+			if s.gameState.Victory {
+				ctx.Store.EarnTitle(ctx.Fingerprint, "champion")
+			}
+			// Check player gold for gold_king title
+			for _, p := range s.gameState.Players {
+				if p.Fingerprint == ctx.Fingerprint && p.Gold >= 500 {
+					ctx.Store.EarnTitle(ctx.Fingerprint, "gold_king")
+				}
+			}
+
+			// Save daily record if in daily mode
+			if ctx.Session != nil && ctx.Session.DailyMode {
+				playerGold := 0
+				for _, p := range s.gameState.Players {
+					if p.Fingerprint == ctx.Fingerprint {
+						playerGold = p.Gold
+						break
+					}
+				}
+				ctx.Store.SaveDaily(store.DailyRecord{
+					Date:         ctx.Session.DailyDate,
+					Player:       ctx.Fingerprint,
+					PlayerName:   ctx.PlayerName,
+					FloorReached: s.gameState.FloorNum,
+					GoldEarned:   playerGold,
+				})
+			}
+
 			s.rankingSaved = true
 		}
 		return NewResultScreen(s.gameState, s.rankingSaved), nil

ui/leaderboard_view.go

@@ -2,6 +2,7 @@ package ui
 
 import (
 	"fmt"
+	"time"
 
 	tea "github.com/charmbracelet/bubbletea"
 	"github.com/charmbracelet/lipgloss"
@@ -9,7 +10,9 @@ import (
 )
 
 // LeaderboardScreen shows the top runs.
-type LeaderboardScreen struct{}
+type LeaderboardScreen struct {
+	tab int // 0=all-time, 1=gold, 2=daily
+}
 
 func NewLeaderboardScreen() *LeaderboardScreen {
 	return &LeaderboardScreen{}
@@ -17,6 +20,10 @@ func NewLeaderboardScreen() *LeaderboardScreen {
 
 func (s *LeaderboardScreen) Update(msg tea.Msg, ctx *Context) (Screen, tea.Cmd) {
 	if key, ok := msg.(tea.KeyMsg); ok {
+		if isKey(key, "tab") || key.Type == tea.KeyTab {
+			s.tab = (s.tab + 1) % 3
+			return s, nil
+		}
 		if isKey(key, "l") || isEnter(key) || isQuit(key) {
 			return NewTitleScreen(), nil
 		}
@@ -26,52 +33,80 @@ func (s *LeaderboardScreen) Update(msg tea.Msg, ctx *Context) (Screen, tea.Cmd)
 
 func (s *LeaderboardScreen) View(ctx *Context) string {
 	var byFloor, byGold []store.RunRecord
+	var daily []store.DailyRecord
 	if ctx.Store != nil {
 		byFloor, _ = ctx.Store.TopRuns(10)
 		byGold, _ = ctx.Store.TopRunsByGold(10)
+		daily, _ = ctx.Store.GetDailyLeaderboard(time.Now().Format("2006-01-02"), 20)
 	}
-	return renderLeaderboard(byFloor, byGold, ctx.Width, ctx.Height)
+	return renderLeaderboard(byFloor, byGold, daily, s.tab, ctx.Width, ctx.Height)
 }
 
-func renderLeaderboard(byFloor, byGold []store.RunRecord, width, height int) string {
+func renderLeaderboard(byFloor, byGold []store.RunRecord, daily []store.DailyRecord, tab, width, height int) string {
 	title := styleHeader.Render("── Leaderboard ──")
 
-	// By Floor
-	var floorSection string
-	floorSection += styleCoop.Render("  Top by Floor") + "\n"
-	for i, r := range byFloor {
-		if i >= 5 {
-			break
+	// Tab header
+	tabs := []string{"Floor", "Gold", "Daily"}
+	var tabLine string
+	for i, t := range tabs {
+		if i == tab {
+			tabLine += styleHeader.Render(fmt.Sprintf(" [%s] ", t))
+		} else {
+			tabLine += styleSystem.Render(fmt.Sprintf("  %s  ", t))
 		}
-		medal := fmt.Sprintf("  %d.", i+1)
-		cls := ""
-		if r.Class != "" {
-			cls = fmt.Sprintf(" [%s]", r.Class)
-		}
-		floorSection += fmt.Sprintf("  %s %s%s  B%d  %s\n",
-			medal, stylePlayer.Render(r.Player), styleSystem.Render(cls),
-			r.Floor, styleGold.Render(fmt.Sprintf("%dg", r.Score)))
 	}
 
-	// By Gold
-	var goldSection string
-	goldSection += styleCoop.Render("\n  Top by Gold") + "\n"
-	for i, r := range byGold {
-		if i >= 5 {
-			break
+	var content string
+
+	switch tab {
+	case 0: // By Floor
+		content += styleCoop.Render("  Top by Floor") + "\n"
+		for i, r := range byFloor {
+			if i >= 10 {
+				break
+			}
+			medal := fmt.Sprintf("  %d.", i+1)
+			cls := ""
+			if r.Class != "" {
+				cls = fmt.Sprintf(" [%s]", r.Class)
+			}
+			content += fmt.Sprintf("  %s %s%s  B%d  %s\n",
+				medal, stylePlayer.Render(r.Player), styleSystem.Render(cls),
+				r.Floor, styleGold.Render(fmt.Sprintf("%dg", r.Score)))
 		}
-		medal := fmt.Sprintf("  %d.", i+1)
-		cls := ""
-		if r.Class != "" {
-			cls = fmt.Sprintf(" [%s]", r.Class)
+	case 1: // By Gold
+		content += styleCoop.Render("  Top by Gold") + "\n"
+		for i, r := range byGold {
+			if i >= 10 {
+				break
+			}
+			medal := fmt.Sprintf("  %d.", i+1)
+			cls := ""
+			if r.Class != "" {
+				cls = fmt.Sprintf(" [%s]", r.Class)
+			}
+			content += fmt.Sprintf("  %s %s%s  B%d  %s\n",
+				medal, stylePlayer.Render(r.Player), styleSystem.Render(cls),
+				r.Floor, styleGold.Render(fmt.Sprintf("%dg", r.Score)))
+		}
+	case 2: // Daily
+		content += styleCoop.Render(fmt.Sprintf("  Daily Challenge — %s", time.Now().Format("2006-01-02"))) + "\n"
+		if len(daily) == 0 {
+			content += "  No daily runs yet today.\n"
+		}
+		for i, r := range daily {
+			if i >= 20 {
+				break
+			}
+			medal := fmt.Sprintf("  %d.", i+1)
+			content += fmt.Sprintf("  %s %s  B%d  %s\n",
+				medal, stylePlayer.Render(r.PlayerName),
+				r.FloorReached, styleGold.Render(fmt.Sprintf("%dg", r.GoldEarned)))
 		}
-		goldSection += fmt.Sprintf("  %s %s%s  B%d  %s\n",
-			medal, stylePlayer.Render(r.Player), styleSystem.Render(cls),
-			r.Floor, styleGold.Render(fmt.Sprintf("%dg", r.Score)))
 	}
 
-	footer := styleSystem.Render("\n[L] Back")
+	footer := styleSystem.Render("\n[Tab] Switch Tab  [L] Back")
 
 	return lipgloss.Place(width, height, lipgloss.Center, lipgloss.Center,
-		lipgloss.JoinVertical(lipgloss.Center, title, "", floorSection, goldSection, footer))
+		lipgloss.JoinVertical(lipgloss.Center, title, tabLine, "", content, footer))
 }

ui/lobby_view.go

@@ -3,6 +3,7 @@ package ui
 import (
 	"fmt"
 	"strings"
+	"time"
 
 	tea "github.com/charmbracelet/bubbletea"
 	"github.com/charmbracelet/lipgloss"
@@ -120,6 +121,22 @@ func (s *LobbyScreen) Update(msg tea.Msg, ctx *Context) (Screen, tea.Cmd) {
 					return NewClassSelectScreen(), nil
 				}
 			}
+		} else if isKey(key, "d") {
+			// Daily Challenge: create a private solo daily session
+			if ctx.Lobby != nil {
+				code := ctx.Lobby.CreateRoom(ctx.PlayerName + "'s Daily")
+				if err := ctx.Lobby.JoinRoom(code, ctx.PlayerName, ctx.Fingerprint); err == nil {
+					ctx.RoomCode = code
+					room := ctx.Lobby.GetRoom(code)
+					if room != nil {
+						room.Session = game.NewGameSession(ctx.Lobby.Cfg())
+						room.Session.DailyMode = true
+						room.Session.DailyDate = time.Now().Format("2006-01-02")
+						ctx.Session = room.Session
+					}
+					return NewClassSelectScreen(), nil
+				}
+			}
 		} else if isKey(key, "h") && s.hardUnlocked {
 			s.hardMode = !s.hardMode
 		} else if isKey(key, "q") {
@@ -171,7 +188,7 @@ func renderLobby(state lobbyState, width, height int) string {
 		Padding(0, 1)
 
 	header := headerStyle.Render(fmt.Sprintf("── Lobby ── %d online ──", state.online))
-	menu := "[C] Create Room  [J] Join by Code  [Up/Down] Select  [Enter] Join  [Q] Back"
+	menu := "[C] Create Room  [J] Join by Code  [D] Daily Challenge  [Up/Down] Select  [Enter] Join  [Q] Back"
 	if state.hardUnlocked {
 		hardStatus := "OFF"
 		if state.hardMode {